EPS-HEP 2017
Report of Contributions
https://indico.cern.ch/e/epshep2017 EPS-HEP 2017 / Report of Contributions Theory overview on FCNC B-decays
Contribution ID: 10 Type: Parallel Talk
Theory overview on FCNC B-decays Thursday, 6 July 2017 09:00 (30 minutes)
LHCb experiment at CERN has recently reported a set of measurements on lepton flavour univer- sality in b to s transitions showing a departure from the Standard Model predictions. I will review the main ideas recently put forward to make sense out of these intriguing hints. Focusing on the new physics explanation, I will discuss the correlated signals expected in other low- and high- energy observables, that could help clarify the mysterious signal.
Experimental Collaboration
Primary author: GRELJO, Admir (University of Zurich) Presenter: GRELJO, Admir (University of Zurich) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 1 EPS-HEP 2017 / Report of Contributions Charm Quark Mass with Calibrate …
Contribution ID: 11 Type: Parallel Talk
Charm Quark Mass with Calibrated Uncertainty Friday, 7 July 2017 12:35 (13 minutes)
We determine the charm quark mass mc(mc) from QCD sum rules of moments of the vector cur- rent correlator calculated in perturbative QCD. Only experimental data for the charm resonances below the continuum threshold are needed in our approach, while the continuum contribution is determined by requiring self-consistency between various sum rules, including the one for the ze- roth moment. Existing data from the continuum region can then be used to bound the theoretical error. Our result is mc(mc) = 1272 ± 8 MeV for αs(MZ ) = 0.1182. Special attention is given to the question how to quantify and justify the uncertainty.
Experimental Collaboration
Primary author: Prof. ERLER, Jens (IF-UNAM) Co-authors: Prof. SPIESBERGER, Hubert (JGU Mainz); Dr MASJUAN, Pere (IFAE-UAB) Presenter: Prof. ERLER, Jens (IF-UNAM) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 2 EPS-HEP 2017 / Report of Contributions The MoEDAL Experiment at the L…
Contribution ID: 12 Type: Parallel Talk
The MoEDAL Experiment at the LHC - a New Light on the High Energy Frontier Friday, 7 July 2017 17:00 (15 minutes)
MoEDAL is a pioneering experiment designed to search for highly ionising messengers of new physics such as magnetic monopoles or massive (pseudo-)stable charged particles, that are pre- dicted to existing a plethora of models beyond the Standard Model. It started data taking at the LHC at a centre-of-mass energy of 13 TeV, in 2015. Its ground breaking physics program defines a number of scenarios that yield potentially revolutionary insights into such foundational questions as: are there extra dimensions or new symmetries; what is the mechanism for the generation of mass; does magnetic charge exist; and what is the nature of dark matter. MoEDAL purpose is to meet such far-reaching challenges at the frontier of the field. We will present the first results from the MoEDAL detector on Magnetic Monopole production that are the world’s best for Monopoles with multiple magnetic charge. In conclusion, plans to install a new MoEDAL sub-detector de- signed to search for very long-lived neutral particles as well as mini-charged particles will be very briefly discussed.
Experimental Collaboration MoEDAL
Primary author: PINFOLD, James (University of Alberta (CA)) Presenter: PINFOLD, James (University of Alberta (CA)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 3 EPS-HEP 2017 / Report of Contributions Results from Mice Step IV
Contribution ID: 20 Type: Parallel Talk
Results from Mice Step IV Saturday, 8 July 2017 12:00 (25 minutes)
Muon beams of low emittance provide the basis for the intense, well characterised neutrino beams of the Neutrino Factory and for leptonantilepton collisions at energies of up to several TeV at a Muon Collider. The international Muon Ionization Cooling Experiment (MICE) will demonstrate ionization cooling the technique by which it is proposed to reduce the phasespace volume occupied by the muon beam. MICE is being constructed in a series of Steps. The configuration currently in operation at the Rutherford Appleton Laboratory is optimised for the study the properties of liquid hydrogen and lithium hydride that affect cooling. The data taken in the present configuration have been partially ana- lyzed and the available results will be described in detail.
Experimental Collaboration MICE (Muon Ionization Cooling Experiment)
Primary author: PALLADINO, Vittorio (Universita e INFN, Napoli (IT)) Presenters: DRIELSMA, François (Universite de Geneve (CH)); PALLADINO, Vittorio (Universita e INFN, Napoli (IT)) Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 4 EPS-HEP 2017 / Report of Contributions Layout of the MICE Demonstratio …
Contribution ID: 22 Type: Poster Presentation
Layout of the MICE Demonstration of Muon Ionization Cooling
Muon beams of low emittance provide the basis for the intense, wellcharacterised neutrino beams necessary to elucidate the physics of flavour at the Neutrino Factory and to provide leptonantilepton collisions up to several TeV at the Muon Collider. The international Muon Ionization Cooling Ex- periment (MICE) will demonstrate muon ionization cooling, the technique proposed to reduce the phases- pace volume occupied by the muon beam at such facilities. In an ionizationcooling channel, the muon beam traverses a material (the absorber) loosing energy, which is replaced us- ing RF cavities. The combined effect is to reduce the transverse emittance of the beam (transverse cooling). The configuration of MICE required to deliver the demonstration of ionization cooling is presently being prepared in parallel to the execution of a programme designed to mea- sure the cooling properties of liquidhydrogen and lithium hydride (Step IV). The design of this final cooling demonstration will be presented together with a summary of the performance of each of its components and the cooling performance of the experiment.
Experimental Collaboration
Presenter: WHYTE, colin (University of Strathclyde) Session Classification: Poster session
Track Classification: Accelerators for HEP
October 6, 2021 Page 5 EPS-HEP 2017 / Report of Contributions ANALYSIS OF THE PARTICLE M …
Contribution ID: 23 Type: Poster Presentation
ANALYSIS OF THE PARTICLE MASS SPECTRUM PDG-2016
Lattice-QCD recent results and calculations of Daison-Schwinger equation by C.Roberts et al. allowed to estimate the constituent quark mass Mq about 400~MeV. This is in agreement with the value 0f 441~MeV inthe modern constituent quark model (NRCQM, by L.Glozman et al.) where it is determined as 1/3 of the mass of Ξ-octet hyperon. Earlier the discreteness in mass values of nucleons, the muon, the pion and other particles with the period of 16 electron masses (the period of δ=16me and numbers n=13, 17 etc. for the muon, the pion and the other particles) was found out from the analysis of exactly known relation between nucleon masses and the electron mass (CODATA relation) [1]. For an independent check of the empirical relations (found earlier by Y.Nambu, A.Hautot, G.Mac-Gregor and others) particle masses from recent Particle Data Group (PDG) 2016 compilation was performed. On the distribution of all differences between 140 particles known with accuracy better than 5 MeV the grouping effect of masses of the pion, themuon and the constituent quark (445-460 MeV) was confirmed. The stability of mass-intervals in the region of the bottom-quark mass is discussed.\\
1. S.I.Sukhoruchkin, Nucl. Part. Phys. Proc. 270-272 (2016) 211.
Experimental Collaboration
Primary author: Dr SUKHORUCHKIN, Sergey (Petersburg Nuclear Physics Institute) Presenter: Dr SUKHORUCHKIN, Sergey (Petersburg Nuclear Physics Institute) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 6 EPS-HEP 2017 / Report of Contributions Sensitivity to scalar contributions …
Contribution ID: 24 Type: Parallel Talk
Sensitivity to scalar contributions in b to c (u) tau nu decays Thursday, 6 July 2017 17:30 (15 minutes)
I present results of an analysis of scalar contributions in b→cτν transitions including the latest measurements of R(D(∗)), the q2 differential distributions in B→D(∗)τν, the τ polarization asymme- try for B→D∗τν, and the bound derived from the total width of the Bc meson. Scalar contributions with the simultaneous presence of both left- and right-handed couplings to quarks can explain the available data, specifically R(D(∗)) together with the measured differential distributions. However, the constraints from the total Bc width present a slight tension with the current data on B→D∗τν in this scenario, preferring smaller values for R(D∗). I discuss possibilities to disentangle scalar new physics from other new-physics scenarios like the presence of only a left-handed vector cur- rent, via additional observables in B→D(∗)τν decays or additional decay modes like the baryonic Λb→Λcτν and the inclusive B→Xcτν decays. We also analyze scalar contributions in b→uτν transitions, including the latest measurements of B→τν, providing predictions for Λb→pτν and B→πτν decays. The potential complementarity between the b→u and b→c sectors is finally in- vestigated once assumptions about the flavour structure of the underlying theory are made.
Experimental Collaboration
Primary authors: CELIS, Alejandro (Ludwig Maximilian University); JUNG, Martin (TUM IAS / Excellence Cluster Universe); PICH, Antonio; LI, Xin-Qiang Presenter: CELIS, Alejandro (Ludwig Maximilian University) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 7 EPS-HEP 2017 / Report of Contributions Standard Model Extended by a He …
Contribution ID: 25 Type: Parallel Talk
Standard Model Extended by a Heavy Singlet: Linear vs. Nonlinear EFT Thursday, 6 July 2017 15:00 (15 minutes)
I consider the Standard Model extended by a heavy scalar singlet and derive the low-energy effec- tive theory resulting from integrating out the heavy state. This exercise in effective field theory serves to illustrate with a simple example the systematics of the linear and nonlinear electroweak effective Lagrangians and to clarify the relation between them. I discuss power-counting aspects and the transition between both effective theories on the basis of the model.
Experimental Collaboration
Primary authors: CELIS, Alejandro (Ludwig Maximilian University); CATA, Oscar; Dr KRAUSE, Claudius (IFIC Valencia); BUCHALLA, Gerhard (LMU Munich) Presenter: CELIS, Alejandro (Ludwig Maximilian University) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 8 EPS-HEP 2017 / Report of Contributions Recent results from the SND detector
Contribution ID: 28 Type: Parallel Talk
Recent results from the SND detector Saturday, 8 July 2017 09:00 (15 minutes)
Recent results on study of exclusive processes of e+e− annihilation into hadrons below 2 GeV obtained at the SND detector are presented. The analyses are based on data collected at the VEPP- 2M and VEPP-2000 colliders. In particular, we present the precise measurements of the e+e− → π0γ and e+e− → K+K− cross sections, and the first measurments of the e+e− → ωπ0η and e+e− → π+π−π0η reactions.
Experimental Collaboration The SND Collaboration
Primary author: Prof. DRUZHININ, Vladimir (NSU/BINP, Novosibirsk) Presenter: Prof. DRUZHININ, Vladimir (NSU/BINP, Novosibirsk) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 9 EPS-HEP 2017 / Report of Contributions The invariant and helicity amplitu …
Contribution ID: 32 Type: Parallel Talk
The invariant and helicity amplitudes in the → ∗ 1± 3± transitions Λb Λ (2 , 2 ) + J/ψ. Thursday, 6 July 2017 14:30 (15 minutes)
I present results for the invariant and helicity amplitudes in the transitions ∗ P Λb → Λ (J ) + J/ψ where Λ∗(J P ) are sud-resonances with ± ± P 1 3 J = 2 , 2 . The calculations are performed in the framework of our covariant confined quark model. We find that the values ∗ 3 − of the helicity amplitudes for the Λ (1520, 2 ) ∗ 3 + and Λ (1890, 2 ) are suppressed compared with those for the 1 + ∗ 1 − ground state Λ(1116, 2 ) and Λ (1405, 2 ). This analysis is important for the identification of + the charmed pentaquark Pc since the cascade decay → ∗ 3 ± → − Λb Λ ( 2 )( pK ) + J/ψ. involves the same final states as the decay 0 → + → − Λb Pc ( p K ) + J/ψ. I also discuss polarization effects in the cascade decay − + − Λb → Λ(1116)(→ pπ ) + J/ψ(→ ℓ ℓ ). This analysis was published in [1].
[1] T.~Gutsche, M.~A.~Ivanov, J.~G.~K\”orner, V.~E.~Lyubovitskij and P.~Santorelli, Phys.\ Rev.\ D {\bf 88}, no. 11, 114018 (2013)
Experimental Collaboration
Primary author: Prof. IVANOV, Mikhail (Joint Institute for Nuclear Research) Presenters: Prof. IVANOV, Mikhail (Joint Institute for Nuclear Research); IVANOV, Mikhail; IVANOV, Mikhail (Ecole Polytechnique Federale de Lausanne (CH)); IVANOV, Mikhail (Moscow State Univer- sity) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 10 EPS-HEP 2017 / Report of Contributions Isospin Breaking in the Decay Con …
Contribution ID: 33 Type: Poster Presentation
Isospin Breaking in the Decay Constants of Heavy-Light D and B Mesons
We propose a new method for calculating the dependences of the decay constants of heavy-light mesons on the light-quark mass m based on QCD sum rules at infinitely large Borel mass parameter. For an appropriate choice of the correlation functions, all condensate contributions vanish and the m-dependence of the decay constants is shown to be mainly determined by the known analytic m-dependence of the diagrams of perturbative QCD. The results for strong isospin breaking in the decay constants of heavy pseudoscalar and vector mesons are reported.
Experimental Collaboration
Primary authors: MELIKHOV, Dmitri (HEPHY); SIMULA, Silvano (INFN); LUCHA, Wolfgang (Austrian Academy of Sciences)
Presenter: LUCHA, Wolfgang (Austrian Academy of Sciences) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 11 EPS-HEP 2017 / Report of Contributions Exotic states and their properties f …
Contribution ID: 34 Type: Parallel Talk
Exotic states and their properties from QCD sum rules Saturday, 8 July 2017 12:45 (15 minutes)
We show that the correlation functions involving exotic tetra- and penta-quark currents in QCD have fundamentally different properties compared with the correlation functions of the bilinear quark current, the interpolating currents for the normal hadrons. Taking into account the fact, that the exotic currents of different structures may be used as the interpolating currents for oneand the same exotic hadron, we derive a number of rigorous self-consistency conditions which lead to the selection of the appropriate diagrams for constructing QCD sum rules for the exotic states. We demonstrate that the calculation of the radiative corrections is mandatory for a consistent sum-rule analysis of the exotic states.
Experimental Collaboration
Primary authors: MELIKHOV, Dmitri (HEPHY); LUCHA, Wolfgang (Austrian Academy of Sci- ences); SAZDJIAN, Hagop (University Paris-Sud) Presenter: MELIKHOV, Dmitri (HEPHY) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 12 EPS-HEP 2017 / Report of Contributions The Italian Summer Students Prog …
Contribution ID: 35 Type: Poster Presentation
The Italian Summer Students Program at Fermi National Accelerator Laboratory
Since 1984 the INFN groups collaborating with Fermilab have been running a 2-month long sum- mer training program for Italian university students. In 1984 the program involved only a few Pisa physics students, but it was later extended to engineering students. Since 2004 the program has been supported in part by DOE in the frame of an exchange agreement with INFN. In 2007 the Sant’Anna School (Pisa) agreed with Fermilab to share the cost of 4 engineering students each year. In 2010-2015 a few students have been supported by the ISSNAF Foundation. Over the 30 years of its history, the program has involved ~450 Italian students. In 2010 - 2016 Fer- milab hosted 180 students in physics and engineering from ~20 Italian universities. With the sup- port of INFN, INAF, ASI, and the Cultural Association of Italians at Fermilab (CAIF), 20 additional students were hosted in several other US institutions: NASA Goddard Space Flight Center and Jet Propulsion Laboratory, HST in Baltimore, SLAC, and the universities of Harvard, Columbia, Prince- ton, Arizona, Colorado Boulder, Purdue, Caltech and Stanford. The training programs spanned from the analysis of collider data (CDF and CMS), to construction of particle detectors and acceler- ator components, R/D on superconductive elements, theory of accelerators, analysis of astrophys- ical data, and study of future space missions. In 2015 the University of Pisa created an ad-hoc Summer School. Fermilab interns are enrolled for the duration of the internship and have to write summary reports published in the Fermilab and University of Pisa web pages. Upon positive evaluation, students are acknowledged 6 ECTS credits. The program will grow under CAIF management. INFN has granted his sponsorship, andASI granted support for 3 fellowships in US space science laboratories organised by CAIF. The pro- gram is part of the outreach of the EU Project “Muse” (GA 690835). We report on recruiting methods, training programs, and on final students’ evaluation.
Experimental Collaboration
Primary authors: Prof. DONATI, Simone (University of Pisa); Prof. BARZI, Emanuela (Fermi- lab); Prof. BELLETTINI, Giorgio (Fermilab) Presenter: Prof. DONATI, Simone (University of Pisa) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 13 EPS-HEP 2017 / Report of Contributions Status of the Advanced LIGO and …
Contribution ID: 36 Type: Parallel Talk
Status of the Advanced LIGO and Advanced Virgo Detectors Friday, 7 July 2017 15:30 (15 minutes)
This talk will present the status of the Advanced LIGO and Advanced Virgo detectors, ayearafter the first detections of gravitational waves emitted by two binary black hole coalescences. Aftera 10-month break due to upgrades, maintenance and commissioning, the Advanced LIGO detectors started their second ?Observation Run? (O2) on November 30th 2016. This data taking period is expected to last until about mid-2017, before another long shutdown to further improve the sensitivity of the instruments. In the meantime, the Advanced Virgo commissioning started mid- 2016 and substantial progress have been made since then towards controlling the detector in its nominal configuration. The goal of the Virgo collaboration is to join the Advanced LIGO detectors for a common data taking period before O2 ends.
Experimental Collaboration Virgo experiment and LIGO-Virgo collaboration
Primary author: ARNAUD, Nicolas (LAL (CNRS-IN2P3)) Presenter: ARNAUD, Nicolas (LAL (CNRS-IN2P3)) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 14 EPS-HEP 2017 / Report of Contributions Welcome and prize ceremony
Contribution ID: 37 Type: not specified
Welcome and prize ceremony Monday, 10 July 2017 09:00 (1h 30m)
Experimental Collaboration
Session Classification: Plenary session
October 6, 2021 Page 15 EPS-HEP 2017 / Report of Contributions LHC Collider Status
Contribution ID: 38 Type: Plenary Talk
LHC Collider Status Monday, 10 July 2017 10:30 (30 minutes)
Experimental Collaboration
Presenter: BORDRY, Frederick (CERN) Session Classification: Plenary session
October 6, 2021 Page 16 EPS-HEP 2017 / Report of Contributions Highlights from the ATLAS Exper …
Contribution ID: 39 Type: Plenary Talk
Highlights from the ATLAS Experiment Monday, 10 July 2017 11:30 (30 minutes)
Experimental Collaboration
Presenter: TOVEY, Daniel (University of Sheffield (GB)) Session Classification: Plenary session
October 6, 2021 Page 17 EPS-HEP 2017 / Report of Contributions Highlights from the CMS Experiment
Contribution ID: 40 Type: Plenary Talk
Highlights from the CMS Experiment Monday, 10 July 2017 12:00 (30 minutes)
Experimental Collaboration
Presenter: Dr ALCARAZ MAESTRE, Juan (CIEMAT-Madrid) Session Classification: Plenary session
October 6, 2021 Page 18 EPS-HEP 2017 / Report of Contributions Measurements of the H Scalar Boson
Contribution ID: 41 Type: Plenary Talk
Measurements of the H Scalar Boson Monday, 10 July 2017 12:30 (30 minutes)
Experimental Collaboration
Presenter: MERIDIANI, Paolo (Universita e INFN, Roma I (IT)) Session Classification: Plenary session
October 6, 2021 Page 19 EPS-HEP 2017 / Report of Contributions Registration
Contribution ID: 42 Type: not specified
Registration
October 6, 2021 Page 20 EPS-HEP 2017 / Report of Contributions Creating QCD plasma droplets in p …
Contribution ID: 43 Type: Parallel Talk
Creating QCD plasma droplets in p+p collisions at the LHC Friday, 7 July 2017 09:00 (30 minutes)
ATLAS, CMS and ALICE experiments have measured flow-like signatures in p+p collisions at 5.02 and 13 TeV that are reminiscent of those found in heavy-ion collisions. These signatures can natu- rally be explained as originating from tiny droplets of QCD plasma expanding hydrodynamically. I will review the applicability of hydrodynamics to plasma droplets below the femtometer scale and discuss possible implications for precision beyond-the-standard-model physics searches in p+p experiments.
Experimental Collaboration
Primary authors: ROMATSCHKE, Paul; ROMATSCHKE, Paul (University of Colorado, Boul- der)
Presenter: ROMATSCHKE, Paul Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 21 EPS-HEP 2017 / Report of Contributions CUPID-0: a cryogenic calorimeter …
Contribution ID: 44 Type: Parallel Talk
CUPID-0: a cryogenic calorimeter with particle identification for double beta decay search Friday, 7 July 2017 17:00 (15 minutes)
With their excellent energy resolution, efficiency, and intrinsic radio-purity, cryogenic calorime- ters are primed for the search of neutrino-less double beta decay (0nDBD). The sensitivity of these devices could be further increased by discriminating the dominant alpha background from the ex- pected beta like signal. The CUPID-0 collaboration aims at demonstrating that the measurement of the scintillation light produced by the absorber crystals allows for particle identification and, thus, for a complete rejection of the alpha background. The CUPID-0 detector, assembled in 2016 and now in commissioning, consists of 26 Zn82Se scintillating calorimeters for about 2x1025 0nDBD emitters. In this contribution we present the preliminary results obtained with the detector and the perspectives for a next generation project.
Experimental Collaboration CUPID-0
Primary author: BELLINI, Fabio (University of Rome) Presenter: BELLINI, Fabio (University of Rome) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 22 EPS-HEP 2017 / Report of Contributions Gravitational Wave observations: …
Contribution ID: 45 Type: Plenary Talk
Gravitational Wave observations: status and perspectives Monday, 10 July 2017 14:30 (30 minutes)
Experimental Collaboration
Presenter: PUNTURO, Michele (INFN Perugia (IT)) Session Classification: Plenary session
October 6, 2021 Page 23 EPS-HEP 2017 / Report of Contributions Interplay Between the Higgs and C …
Contribution ID: 46 Type: Plenary Talk
Interplay Between the Higgs and Cosmology Monday, 10 July 2017 15:00 (30 minutes)
Presenter: LEBEDEV, Oleg (University of Helsinki) Session Classification: Plenary session
October 6, 2021 Page 24 EPS-HEP 2017 / Report of Contributions Standard Model Measurements (E …
Contribution ID: 47 Type: Plenary Talk
Standard Model Measurements (EWK and Top physics) Monday, 10 July 2017 15:30 (30 minutes)
Presenter: SHAPIRO, Marjorie (Lawrence Berkeley National Lab. (US)) Session Classification: Plenary session
October 6, 2021 Page 25 EPS-HEP 2017 / Report of Contributions The Standard Model Theory
Contribution ID: 48 Type: Plenary Talk
The Standard Model Theory Monday, 10 July 2017 16:30 (30 minutes)
Experimental Collaboration
Presenters: DITTMAIER, Stefan (MPI fuer Physik); DITTMAIER, Stefan (Albert-Ludwigs-Univer- sitaet Freiburg (DE)) Session Classification: Plenary session
October 6, 2021 Page 26 EPS-HEP 2017 / Report of Contributions Top Quark Physics
Contribution ID: 49 Type: Plenary Talk
Top Quark Physics Monday, 10 July 2017 17:00 (30 minutes)
Experimental Collaboration
Presenters: CZAKON, Michal (University of Wuerzburg); CZAKON, Michal Wiktor (Rheinisch-West- faelische Tech. Hoch. (DE)) Session Classification: Plenary session
October 6, 2021 Page 27 EPS-HEP 2017 / Report of Contributions The Information Paradox: QM and…
Contribution ID: 50 Type: Plenary Talk
The Information Paradox: QM and Black Holes Monday, 10 July 2017 17:30 (30 minutes)
Experimental Collaboration
Presenters: PAPADODIMAS, Kyriakos (University of Amsterdam); PAPADODIMAS, Kyriakos (CERN) Session Classification: Plenary session
October 6, 2021 Page 28 EPS-HEP 2017 / Report of Contributions Highlights from the LHCb Experi …
Contribution ID: 51 Type: Plenary Talk
Highlights from the LHCb Experiment Tuesday, 11 July 2017 09:00 (30 minutes)
Presenter: EGEDE, Ulrik (Imperial College (GB)) Session Classification: Plenary session
October 6, 2021 Page 29 EPS-HEP 2017 / Report of Contributions Rare Decays and Exotic States in Q …
Contribution ID: 52 Type: Plenary Talk
Rare Decays and Exotic States in Quark Flavour Physics Tuesday, 11 July 2017 09:30 (30 minutes)
Presenter: SERRANO, Justine (CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France)
Session Classification: Plenary session
October 6, 2021 Page 30 EPS-HEP 2017 / Report of Contributions CP Violation and CKM Physics
Contribution ID: 53 Type: Plenary Talk
CP Violation and CKM Physics Tuesday, 11 July 2017 10:00 (30 minutes)
Presenter: SCHWANDA, Christoph (Austrian Academy of Sciences (AT)) Session Classification: Plenary session
October 6, 2021 Page 31 EPS-HEP 2017 / Report of Contributions Flavour Physics Theory
Contribution ID: 54 Type: Plenary Talk
Flavour Physics Theory Tuesday, 11 July 2017 10:30 (30 minutes)
Experimental Collaboration
Presenters: GORI, Stefania (University of Cincinnati (US)); GORI, Stefania (Perimeter Institute/Cincinnati University); GORI, Stefania; GORI, Stefania (University of Chicago); GORI, stefania (sns) Session Classification: Plenary session
October 6, 2021 Page 32 EPS-HEP 2017 / Report of Contributions Searches for Supersymmetry and E …
Contribution ID: 55 Type: Plenary Talk
Searches for Supersymmetry and Exotica Tuesday, 11 July 2017 11:30 (30 minutes)
Experimental Collaboration
Presenter: D’ONOFRIO, Monica (University of Liverpool (GB)) Session Classification: Plenary session
October 6, 2021 Page 33 EPS-HEP 2017 / Report of Contributions Direct High-energy Cosmic Ray M …
Contribution ID: 56 Type: Plenary Talk
Direct High-energy Cosmic Ray Measurements Tuesday, 11 July 2017 12:00 (30 minutes)
Presenter: BERTUCCI, Bruna (Universita e INFN, Perugia (IT)) Session Classification: Plenary session
October 6, 2021 Page 34 EPS-HEP 2017 / Report of Contributions Neutrino Astrophysics
Contribution ID: 57 Type: Plenary Talk
Neutrino Astrophysics Tuesday, 11 July 2017 14:30 (30 minutes)
Presenter: DE JONG, Maarten (Nikhef National institute for subatomic physics (NL)) Session Classification: Plenary session
October 6, 2021 Page 35 EPS-HEP 2017 / Report of Contributions Neutrino Physics from Natural and …
Contribution ID: 58 Type: Plenary Talk
Neutrino Physics from Natural and Reactor Beams Tuesday, 11 July 2017 15:00 (30 minutes)
Experimental Collaboration
Presenters: LASSERRE, Thierry; LASSERRE, Thierry (CEA) Session Classification: Plenary session
October 6, 2021 Page 36 EPS-HEP 2017 / Report of Contributions Neutrino Physics from Particle Be …
Contribution ID: 59 Type: Plenary Talk
Neutrino Physics from Particle Beam and Decay Experiments Tuesday, 11 July 2017 15:30 (30 minutes)
Presenter: NAKAYA, Tsuyoshi (Kyoto University) Session Classification: Plenary session
October 6, 2021 Page 37 EPS-HEP 2017 / Report of Contributions Neutrinos: Theory and Phenomen …
Contribution ID: 60 Type: Plenary Talk
Neutrinos: Theory and Phenomenology Tuesday, 11 July 2017 16:30 (30 minutes)
Presenter: KOPP, Joachim (Johannes-Gutenberg-Universitaet Mainz (DE)) Session Classification: Plenary session
October 6, 2021 Page 38 EPS-HEP 2017 / Report of Contributions Direct Searches for Dark Matter
Contribution ID: 61 Type: Plenary Talk
Direct Searches for Dark Matter Tuesday, 11 July 2017 17:00 (30 minutes)
Experimental Collaboration
Presenter: LINDNER, Manfred (Max Planck Institut fuer Kernphysik, Heidelberg, Germany) Session Classification: Plenary session
October 6, 2021 Page 39 EPS-HEP 2017 / Report of Contributions Dark Matter: A Theoretical Overv …
Contribution ID: 62 Type: Plenary Talk
Dark Matter: A Theoretical Overview Tuesday, 11 July 2017 17:30 (30 minutes)
Presenter: HOCHBERG, Yonit (Weizmann Institute of Science) Session Classification: Plenary session
October 6, 2021 Page 40 EPS-HEP 2017 / Report of Contributions Axions: from QCD to the Dark Un …
Contribution ID: 63 Type: Plenary Talk
Axions: from QCD to the Dark Universe Tuesday, 11 July 2017 18:00 (30 minutes)
Presenter: REDONDO, Javier (LMU/MPP Munich) Session Classification: Plenary session
October 6, 2021 Page 41 EPS-HEP 2017 / Report of Contributions Highlights from the ALICE Experi …
Contribution ID: 64 Type: Plenary Talk
Highlights from the ALICE Experiment Wednesday, 12 July 2017 09:00 (30 minutes)
Presenter: FLORIS, Michele (CERN) Session Classification: Plenary session
October 6, 2021 Page 42 EPS-HEP 2017 / Report of Contributions Flavour Production and the QGP i …
Contribution ID: 65 Type: Plenary Talk
Flavour Production and the QGP in Heavy Ion Collisions Wednesday, 12 July 2017 09:30 (30 minutes)
Presenter: ARNALDI, Roberta (Universita e INFN Torino (IT)) Session Classification: Plenary session
October 6, 2021 Page 43 EPS-HEP 2017 / Report of Contributions Jets and Particle Correlations in H …
Contribution ID: 66 Type: Plenary Talk
Jets and Particle Correlations in Heavy Ion Collisions Wednesday, 12 July 2017 10:00 (30 minutes)
Presenter: NGUYEN, Matthew (Centre National de la Recherche Scientifique (FR)) Session Classification: Plenary session
October 6, 2021 Page 44 EPS-HEP 2017 / Report of Contributions 30 Years of Heavy Ions and Outlook
Contribution ID: 67 Type: Plenary Talk
30 Years of Heavy Ions and Outlook Wednesday, 12 July 2017 10:30 (30 minutes)
Presenter: STACHEL, Johanna (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Plenary session
October 6, 2021 Page 45 EPS-HEP 2017 / Report of Contributions Cosmic Microwave Background
Contribution ID: 68 Type: Plenary Talk
Cosmic Microwave Background Wednesday, 12 July 2017 11:30 (30 minutes)
Presenter: BOUCHET, François (IAP Paris, France) Session Classification: Plenary session
October 6, 2021 Page 46 EPS-HEP 2017 / Report of Contributions Dark Energy Surveys
Contribution ID: 69 Type: Plenary Talk
Dark Energy Surveys Wednesday, 12 July 2017 12:00 (30 minutes)
Presenter: KRAUSE, Elisabeth (KALVI Inst. SLAC, Stanford) Session Classification: Plenary session
October 6, 2021 Page 47 EPS-HEP 2017 / Report of Contributions The Cosmological Standard Model
Contribution ID: 70 Type: Plenary Talk
The Cosmological Standard Model Wednesday, 12 July 2017 12:30 (30 minutes)
Presenter: RIOTTO, Antonio Walter (Universite de Geneve (CH)) Session Classification: Plenary session
October 6, 2021 Page 48 EPS-HEP 2017 / Report of Contributions SUSY and BSM Theory After LHC …
Contribution ID: 71 Type: Plenary Talk
SUSY and BSM Theory After LHC 2016 Wednesday, 12 July 2017 14:30 (30 minutes)
Presenter: CRAIG, Nathaniel (UC Santa Barbara) Session Classification: Plenary session
October 6, 2021 Page 49 EPS-HEP 2017 / Report of Contributions Detector R&D for Collider and Un …
Contribution ID: 72 Type: Plenary Talk
Detector R&D for Collider and Underground Experiments Wednesday, 12 July 2017 15:00 (30 minutes)
Presenter: ALLPORT, Philip Patrick (University of Birmingham (UK)) Session Classification: Plenary session
October 6, 2021 Page 50 EPS-HEP 2017 / Report of Contributions Future Accelerator Machines and R …
Contribution ID: 73 Type: Plenary Talk
Future Accelerator Machines and R&D Wednesday, 12 July 2017 15:30 (30 minutes)
Presenter: SCHULTE, Daniel (CERN) Session Classification: Plenary session
October 6, 2021 Page 51 EPS-HEP 2017 / Report of Contributions Highlights from this EPS-HEP 201 …
Contribution ID: 74 Type: Plenary Talk
Highlights from this EPS-HEP 2017 Conference Wednesday, 12 July 2017 16:30 (30 minutes)
Presenter: SPHICAS, Paris (CERN/Athens) Session Classification: Plenary session
October 6, 2021 Page 52 EPS-HEP 2017 / Report of Contributions Outlook
Contribution ID: 75 Type: Plenary Talk
Outlook Wednesday, 12 July 2017 17:00 (30 minutes)
Presenter: ZWIRNER, Fabio (University and INFN, Padova (IT)) Session Classification: Plenary session
October 6, 2021 Page 53 EPS-HEP 2017 / Report of Contributions Announcement of EPS-HEP 2019 a …
Contribution ID: 76 Type: Plenary Talk
Announcement of EPS-HEP 2019 and Closing Wednesday, 12 July 2017 17:30 (5 minutes)
Session Classification: Plenary session
October 6, 2021 Page 54 EPS-HEP 2017 / Report of Contributions Search for new physics with the S …
Contribution ID: 77 Type: Parallel Talk
Search for new physics with the SHiP experiment at CERN Friday, 7 July 2017 18:15 (15 minutes)
SHiP is a new general purpose fixed target facility, whose Technical Proposal has been recently reviewed by the CERN SPS Committee and by the CERN Research Board. The two boards recom- mended that the experiment proceeds further to a Comprehensive Design phase in the context of the new CERN Working group “Physics Beyond Colliders”, aiming at presenting a CERN strategy for the European Strategy meeting of 2019. In its initial phase, the 400GeV proton beam extracted from the SPS will be dumped on a heavy target with the aim of integrating 2×10^20 pot in 5 years. A dedicated detector, based on a long vacuum tank followed by a spectrometer and particle identi- fication detectors, will allow probing a variety of models with light long-lived exotic particles and masses below O(10) GeV /c2. The main focus will be the physics of the so-called Hidden Portals, i.e. search for Dark Photons, Light scalars and pseudo-scalars, and Heavy Neutrinos. The sensitivity to Heavy Neutrinos will allow for the first time to probe, in the mass range between the kaon and the charm meson mass, a coupling range for which Baryogenesis and active neutrino masses could also be explained. Another dedicated emulsion-based detector will allow detection of light dark matter from dark photon decay in an unexplored parameter range
Experimental Collaboration SHiP
Primary author: SHIP, Collaboration (CERN) Presenter: LANTWIN, Oliver (Imperial College (GB)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 55 EPS-HEP 2017 / Report of Contributions Sterile neutrino search with the S …
Contribution ID: 78 Type: Parallel Talk
Sterile neutrino search with the SOX project Friday, 7 July 2017 10:30 (15 minutes)
The SOX project aims at searching eV scale sterile neutrinos by means of a powerful anti-neutrino source located very close to the Borexino detector at the Gran Sasso Laboratory in Italy The source will be made with a sample of Ce-144 completely shielded by a thick tungsten container and will be located at 8.25 m from the center of the Borexino detector. The total activity will be around 150 KCi and it will be precisely determined by calorimetric measurements. The talk will describe the details of the experiment and the expected sensitivity.
Experimental Collaboration SOX
Primary author: PALLAVICINI, Marco (University of Genova and INFN) Presenter: PALLAVICINI, Marco (University of Genova and INFN) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 56 EPS-HEP 2017 / Report of Contributions Neutrino physics with the SHiP ex …
Contribution ID: 79 Type: Parallel Talk
Neutrino physics with the SHiP experiment at CERN Friday, 7 July 2017 18:00 (15 minutes)
SHIP is a new general purpose fixed target facility, whose Technical Proposal has been recently reviewed by the CERN SPS Committee and by the CERN Research Board. The two boards recom- mended that the experiment proceeds further to a Comprehensive Design phase in the context of the new CERN Working group “Physics Beyond Colliders”, aiming at presenting a CERN strategy for the European Strategy meeting of 2019. In its initial phase, the 400GeV proton beam extracted from the SPS will be dumped on a heavy target with the aim of integrating 2×10^20 pot in 5 years. A dedicated detector will allow the study of neutrino cross-sections and angular distributions. ντ deep inelastic scattering cross sections will be measured with a statistics 1000 times larger than currently available, with the extraction of the F4 and F5 structure functions, never measured so far and allow for new tests of lepton non-universality with sensitivity to BSM physics.
Experimental Collaboration SHiP
Primary author: DE SERIO, Marilisa (Universita e INFN, Bari (IT)) Presenter: DE SERIO, Marilisa (Universita e INFN, Bari (IT)) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 57 EPS-HEP 2017 / Report of Contributions Rare FCNF radiative leptonic deca …
Contribution ID: 80 Type: Parallel Talk
Rare FCNF radiative leptonic decays B → γl+l− Thursday, 6 July 2017 12:00 (15 minutes)
We report our recent results on rare radiative leptonic decays B → γl+l− (l = µ, e) in the Standard Model. All necessary B → γ transition form factors induced by the flavour-changing axial, vector, tensor, and pseudo-tensor b → s, d transitions are calculated within the relativistic dispersion approach based on the constituent quark picture. Making use of the updated predictions for the form factors, we provide branching ratios and various differential asymmetries in these decays.
Experimental Collaboration
Primary authors: KOZACHUK, Anastasiia (M.V. Lomonosov Moscow State University (RU)); ME- LIKHOV, Dmitri (HEPHY); NIKITIN, Nikolai (M.V. Lomonosov Moscow State University (RU)) Presenter: MELIKHOV, Dmitri (HEPHY) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 58 EPS-HEP 2017 / Report of Contributions Hairs of discrete symmetries
Contribution ID: 81 Type: Parallel Talk
Hairs of discrete symmetries Friday, 7 July 2017 09:00 (15 minutes)
Gauge symmetries are known to be respected by gravity because gauge charges carry flux lines, but global charges do not carry flux lines and are not conserved by gravitational interaction. For discrete symmetries, they are spontaneously broken in the Universe, forming domain walls. Since the realization of discrete symmetries in the Universe must involve the vacuum expectation values of Higgs fields, a string-like configuration (hair) at the intersection of domain walls intheHiggs vacua can be realized. Therefore, we argue that discrete charges are also respected by gravity.
Experimental Collaboration
Primary author: Prof. KIM, Jihn E. (Kyung Hee University) Presenter: Prof. KIM, Jihn E. (Kyung Hee University) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 59 EPS-HEP 2017 / Report of Contributions Compressed SUSY searches with t …
Contribution ID: 82 Type: Parallel Talk
Compressed SUSY searches with the Recursive Jigsaw Reconstruction Thursday, 6 July 2017 16:30 (15 minutes)
The Recursive Jigsaw reconstruction technique provides a powerful way to tackle challenging SUSY final states with multiple missing particles. By altering the input “decay tree” wedemon- strate a new approach to considering compressed SUSY signatures from a variety of different sources. The imposition of this decay tree provides a clear way to define which objects areas- sociated with an ISR system and those which are candidate decay products of the SUSY system. From this choice a set of variables emerge, providing a method to distinguish compressed cases from the pernicious standard model backgrounds present.
We introduce this new approach, comparing it briefly to other methods used to probe this phase- space and demonstrate it’s power through application to several compressed final states. We will further touch on the applicability of this same method to other physics processes where the use of conventional kinematic handles breaks down.
Experimental Collaboration
Primary author: JACKSON, Paul Douglas (University of Adelaide) Presenter: JACKSON, Paul Douglas (University of Adelaide) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 60 EPS-HEP 2017 / Report of Contributions Hadroproduction in high energy c …
Contribution ID: 83 Type: Poster Presentation
Hadroproduction in high energy collisions
2 2 The transverse momentum spectra, d σ/(dηdpT ), of charged hadrons produced in various high energy interactions (pp, p, , heavy-ion collisions) and measured in different experiments from ISR to LHC are considered simultaneously within several phenomenological models. As a result, the recently introduced “two component model” is shown to provide a much better description of the available experimental data than other widely used parameterizations (eg. Tsallis or Hagedorn). Moreover, the relative contributions of the two components of this model to the spectra: the ex- ponential (”thermal”) and the power-law (”hard”) - are found to vary with the type and the energy of the collisions, the type of the produced hadron, the charged multiplicity and the measured pseudorapididty region. The possible mechanism of this effect is discussed: while the thermal component is produced in the fragmentation of the color string due to the effective event horizon introduced by confinement, the power-law term resembles the Regge theory with the perturbative QCD pomeron. The observed dependences are used to make predictions on the mean transverse momenta
Experimental Collaboration
Primary authors: BYLINKIN, Aleksandr (Moscow Institute of Physics and Technology State Uni- versity (RU); ROSTOVTSEV, Andrei (ITEP Institute for Theoretical and Experimental Physics (ITEP))
Co-authors: RYSKIN, Mikhail (Petersburg Nuclear Physics Institute); KHARZEEV, Dmitri; CHERNYAVSKAYA, Nadezda (Eidgenoessische Tech. Hochschule Zuerich (CH))
Presenter: BYLINKIN, Aleksandr (Moscow Institute of Physics and Technology State University (RU) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 61 EPS-HEP 2017 / Report of Contributions Unmasking the ultrahigh-energy c …
Contribution ID: 84 Type: Parallel Talk
Unmasking the ultrahigh-energy cosmic ray origin Saturday, 8 July 2017 10:30 (15 minutes)
The sharp change in slope of the ultrahigh-energy cosmic ray (UHECR) spectrum around 10^9.6 GeV (the ankle), combined with evidence of a light but extragalactic component near and below the ankle which evolves to intermediate composition above, has proved exceedingly challenging to understand theoretically. Recently, we introduced a very general model, in which for a range of source conditions, photo-disintegration of ultrahigh-energy nuclei in the region surrounding the UHECR accelerator naturally accounts for the observed spectrum and composition of the entire extragalactic component, which dominates above about 10^8.5 GeV. In this talk I will review the generalities of the model and show that starburst galaxies provide a compelling source example.
Experimental Collaboration
Primary author: Prof. ANCHORDOQUI, Luis (Lehman College, City University of New York)
Presenter: Prof. ANCHORDOQUI, Luis (Lehman College, City University of New York) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 62 EPS-HEP 2017 / Report of Contributions GERDA Phase II: recent results in …
Contribution ID: 89 Type: Parallel Talk
GERDA Phase II: recent results in the search for neutrinoless double beta decay Friday, 7 July 2017 15:30 (15 minutes)
The GERDA (GErmanium Detector Array) experiment, located at the Laboratori Nazionali delGran Sasso, is searching for neutrinoless double beta (0νββ) decay of 76Ge. Since the end of 2015, in Phase II of the experiment, 35 kg of enriched high-purity germanium detectors are operated in liquid argon, that serves as cooling for the detectors as well as active shield against external radiation. The aim is a sensitivity on the 0νββ decay half-life larger than 1026 yr with about 100 kg·yr exposure and the lowest background level in the field of about 10−3 cts/(keV·kg·yr). In this talk, an overview of the analysis of the data collected so far will be presented with an emphasis on the background rejection techniques and their performance together with the half-life limit.
Experimental Collaboration GERDA
Primary author: ZSIGMOND, Anna Julia (Max Planck Institute for Physics) Presenter: ZSIGMOND, Anna Julia (Max Planck Institute for Physics) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 63 EPS-HEP 2017 / Report of Contributions New long-lived particles at the LHC
Contribution ID: 90 Type: Parallel Talk
New long-lived particles at the LHC Friday, 7 July 2017 16:30 (30 minutes)
In this talk I will give the theory overview for new long-lived particles at the LHC. I will describe some of the motivations including neutral naturalness and dark matter. I will also discuss some particularly spectacular signatures where current searches have limited sensitivity and where a joint experimental and theoretical effort to design new search strategies could result in discovery.
Experimental Collaboration
Primary author: STOLARSKI, Daniel (Carleton University (CA)) Presenter: STOLARSKI, Daniel (Carleton University (CA)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 64 EPS-HEP 2017 / Report of Contributions XMaS Scientist Experience and Sci …
Contribution ID: 91 Type: Parallel Talk
XMaS Scientist Experience and Science Gala Friday, 7 July 2017 17:30 (15 minutes)
The XMaS Scientist Experience was conceived as an impact project aimed at promoting career aspirations for 17-18 year old female school students. It was centred around the XMaS Beamline which is located at the European Synchrotron Radiation facility in Grenoble, France. The competi- tion asks entrants to research a famous female role model and describe her impact to science and 14 successful winners are then taken to visit the facility and the city of Grenoble. It is currently in its third cohort and the programme has since been broadened to include complimentary events including the XMaS Science Gala and other events.
The Science Gala has now ran for two years, the second event taking place on the afternoonof 25th January when the University of Warwick welcomed 600 visitors of all ages to campus. The Gala included a total of 35 exhibition stands highlighting research and projects from across the Physics, Engineering, WMG, Chemistry and Life Science departments as well as outside organi- sations promoting careers in STEM. We also had tours of different research and teaching labs as well as the ability to view the cosmos in an inflatable planetarium. In addition, there were two talks programmes including an outreach talk for younger audience and a virtual visit to ATLAS at CERN for ages 12 and over. The visitors reported fantastic feedback of the event; of the46 questionnaires returned 100% would recommend the event and would attend again. 28% saw an increase in scientific interest as result of the science gala (most were already ‘very interested’ and remained ‘very interested’). We report the long term results from the first cohort of students who participated in the Scientist Experience programme who have now moved on from post 16 education. From the first cohort of 14 students, 9 have gone on to study science based degree at university. We also report on the feedback and evaluation of the Science Gala as well as plans for the future of the XMaS outreach project.
Experimental Collaboration
Primary author: Mrs LAMPARD, Kayleigh (University of Warwick) Presenter: Mrs LAMPARD, Kayleigh (University of Warwick) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 65 EPS-HEP 2017 / Report of Contributions First Physics Results of AWAKE, a …
Contribution ID: 93 Type: Parallel Talk
First Physics Results of AWAKE, a Plasma Wakefield Acceleration Experiment at CERN Saturday, 8 July 2017 11:35 (25 minutes)
AWAKE is a plasma wakefield acceleration experiment using the 12cm-long, 400GeV proton bunch of the CERN SPS. In order to reach an acceleration gradient in the GeV/m range, the plasma electron density is 7 × 1014cm−3. The transverse self-modulation instability (SMI), strongly seeded byan laser ionization front, turns the long bunch into a train of micro-bunches at the plasma wavelength scale (∼1mm) that resonantly drives the wakefields to large amplitude. Low energy electrons (∼15MeV) can then be externally injected and accelerated to GeV energies. The plasma source is a laser-ionized rubidium vapor source. The vapor density is measured with < 0.5% accuracy at both ends of the source. The detection of the SMI is based on diagnostics aimed at measuring the proton bunch modulation: fluorescent screens for detection of the defocused protons at two locations, optical transition radi- ation (OTR) and streak camera for direct observation of the modulation, and coherent transition radiation (CTR) for modulation frequency measurements. The first experiments focus of the study of the SMI. Experimental results obtained inlate2016 show signs of self-modulation on all diagnostics. Further SMI experiments will be conducted in 2017, together with the installation of the RF-gun and of the electron spectrometer. Injection and acceleration experiments will be conducted in 2018.
After a general introduction to AWAKE and to its physics, the experimental apparatus willbe briefly described and the most recent experimental results will be presented. Mid- and long-term plans, including future experiments, the development of scalable plasma sources and possible ap- plications to HEP will be discussed.
Experimental Collaboration AWAKE Collaboration
Primary author: MUGGLI, Patric (Max Planck Institute for Physics) Presenter: MUGGLI, Patric (Max Planck Institute for Physics) Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 66 EPS-HEP 2017 / Report of Contributions Supersymmetry signals in Z’ decays
Contribution ID: 94 Type: Parallel Talk
Supersymmetry signals in Z’ decays Thursday, 6 July 2017 17:15 (15 minutes)
I discuss the feasibility to search for supersymmetry in the decays of heavy Z’ bosons, predicted by GUT-inspired U(1)’ models, by investigating final states with charged leptons and missing energy in pp collisions at the LHC. I also investigate decays into pairs of the lightest MSSM neutralinos, which are Dark Matter candidates, and update the exclusion limits on the Z’ mass, accounting for the inclusion of BSM decay modes.
Experimental Collaboration
Primary author: CORCELLA, Gennaro (INFN - LNF) Presenter: CORCELLA, Gennaro (INFN - LNF) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 67 EPS-HEP 2017 / Report of Contributions Extraction of alpha_s at NNLO and …
Contribution ID: 95 Type: Parallel Talk
Extraction of alpha_s at NNLO and measurement of jet cross sections in Deep-inelastic Scattering at HERA Friday, 7 July 2017 09:30 (15 minutes)
A precision measurement of jet cross sections in neutral current deep-inelastic scattering for pho- ton virtualities 5.5 < Q2 < 80 GeV2 and inelasticities 0.2 < y < 0.6 is presented, using data taken with the H1 detector at HERA, corresponding to an integrated luminosity of 290 pb−1. Double- differential inclusive jet, dijet and trijet cross sections are measured simultaneously andarepre- sented as a function of jet transverse momentum observables and as a function of Q2. Jet cross sections normalised to the inclusive neutral current DIS cross section in the respective Q2-interval are also determined. Previous results of inclusive jet cross sections in the range 150 < Q2 < 15000 GeV2 are extended to low transverse jet momenta 5 < PT < 7 GeV. The data are compared to predictions from perturbative QCD in next-to-leading order in the strong coupling, in approximate next-to-next-to-leading order and in full next-to-next- to-leading order. Using also the recently published H1 jet data at high values of Q2, the strong coupling constant αs(MZ ) is determined in next-to-leading order. [arxiv:1611.03421, accepted by EPJC] A first determination of the strong coupling αs in next-to-next-to leading order (NNLO) from inclu- sive jet and dijet production in deep-inelastic scattering at HERA is presented. The strong coupling is determined in a fit of jet data collected by the H1 experiment in the range of momentum transfer 5.5
Experimental Collaboration H1
Presenters: BRITZGER, Daniel (Deutsches Elektronen-Synchrotron (DE)); BRITZGER, Daniel (Deutsches Elektronen-Synchrotron (DE)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 68 EPS-HEP 2017 / Report of Contributions Fit of electroweak parameters in p …
Contribution ID: 99 Type: Parallel Talk
Fit of electroweak parameters in polarized deep-inelastic scattering using data from the H1 experiment Thursday, 6 July 2017 12:45 (15 minutes)
Using inclusive DIS cross sections measured with the H1 experiment at HERA, electroweak param- eters of the Standard Model are probed. The cross sections were determined using longitudinally polarized lepton beams, which enhances the sensitivity to the vector couplings of the light quarks. The quark couplings and the electroweak mixing angle are probed through the γ/Z interference. This gives access to electroweak parameters in t-channel exchange at virtualities up to 10000 GeV2.
Experimental Collaboration H1
Primary author: ZHANG, Zhiqing Philippe (LAL, Orsay (FR)) Presenter: ZHANG, Zhiqing Philippe (LAL, Orsay (FR)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 69 EPS-HEP 2017 / Report of Contributions The muon to electron conversion p…
Contribution ID: 102 Type: Parallel Talk
The muon to electron conversion process and the Mu2e experiment at Fermilab Saturday, 8 July 2017 12:30 (15 minutes)
The Mu2e experiment aims to measure the charged-lepton flavour violating (CLFV) neutrino-less conversion of a negative muon into an electron in the field of a nucleus. The conversion process results in a monochromatic electron with an energy slightly below the muon rest mass (104.97 MeV). Goal of the experiment is to improve of four orders of magnitude the previous measurement and reach a single event sensitivity of 2.5 x 10^{-17} on the conversion rate with respect to the muon capture rate. In many of Beyond the Standard Model (BSM) scenarios, rates for CLFV processes are within the reach of the next generation of experiments and their searches have a sensitivity to new physics that exceeds the LHC reach bringing the reach of new mass scale up to 10^4 TeV. In this contest indirected measurements of CLFV will be crucial evidence of new physics. The experiment goal is obtained with a very intense pulsed negative muon beam sent toanAlu- minium target for a total number of 10^{18} stopped muons. Production and transport of the muons is done with a complicated and sophisticated magnetic systems composed by a production, a transport and a detector solenoid.
The improvement with respect to previous conversion experiments is based on four elements: the muon intensity, the beam structure layout, the extinction of out of time particles and the precise electron identification in the detector solenoid. The conversion electron will be reconstructed and separated by the Decay in Orbit (DIO) background by a very high resolution (120 keV) tracking system based on straw technology. The crystal calorimeter system will confirm that the candidates are indeed electrons by performing a powerful mu/e rejection while granting a tracking indepen- dent HLT filter. A Cosmic Ray Veto system surrounds the detector solenoid and contributes to make the cosmic based background negligible.
Experimental Collaboration mu2e
Primary author: Dr MISCETTI, Stefano (LNF -INFN) Presenter: Dr MISCETTI, Stefano (LNF -INFN) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 70 EPS-HEP 2017 / Report of Contributions The Mu2e tracker and calorimeter …
Contribution ID: 103 Type: Parallel Talk
The Mu2e tracker and calorimeter systems Saturday, 8 July 2017 09:00 (15 minutes)
The Mu2e experiment at Fermilab will measure the charged-lepton flavor violating (CLFV) neutrino- less conversion of a negative muon into an electron in the field of a nucleus. This process results in a mono-energetic electron with an energy slightly below the muon rest mass (104.967 MeV). Mu2e will improve the previous measurement by four orders of magnitude using a new technique, reaching a SES (single event sensitivity) of 2.5 x 10−17 on the conversion rate. The experiment will reach mass scales of nearly 104 TeV, far beyond the direct reach of colliders. The experiment is sensitivity to a wide range of new physics, complementing and extending other CLFV searches.
A very intense pulsed muon beam (∼ 1010µ/ sec) is stopped on a target inside a very long solenoid where the detector is located. The Mu2e detector is composed of a tracker and an electromagnetic calorimeter and an external veto for cosmic rays surrounding the solenoid. The Mu2e tracker is the primary divide to measure the momentum of the electron and separate it from background. The crystal calorimeter plays an important role in providing particle identification capabilities, a fast online trigger filter while aiding the track reconstruction capabilities. This presentation will cover the details of the tracker and of the calorimeter providing asummary of the experimental status for the two detectors.
Experimental Collaboration Mu2e
Primary author: GIOVANNELLA, Simona (INFN) Presenter: GIOVANNELLA, Simona (INFN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 71 EPS-HEP 2017 / Report of Contributions Gamma Factory proposal
Contribution ID: 104 Type: Parallel Talk
Gamma Factory proposal Saturday, 8 July 2017 12:25 (25 minutes)
Atomic physics, dismissed prematurely by many to the role of introductory chemistry, had a re- markable renaissance in recent decades thanks to the new ideas and progress in laser technologies. Could this path be followed in other research domains which address femtometer length scales? The key challenge is to create high intensity and brilliance photon beams in the gamma-ray, MeV region, which is inaccessible for the FEL based technologies. The aim of the Gamma Factory project, presented in this talk, is to extend the intensity frontier of the presently operating gamma beam sources by, at least, 6-7 orders of magnitude, for tuneable-energy, quasi-monochromatic gamma- rays, within the photon energy range of 100KeV - 400 MeV. The underlying idea is to use the CERNs high energy beams of partially stripped atoms as “converters” of the laser photons into the MeV gamma rays. High intensity gamma-ray beams could be used in a very broad spectrum of research domains such as: fundamental QED measurements, dark matter searches, investigation of basic symmetries of the Universe, studies of the QCD-confinement phenomena and studies of nuclear structure. They could generate high intensity, polarised electron, positron and muon beamsfor the future high energy physics projects, such as the TeV-range lepton collider and neutrino factory. They could also be used to produce intense neutron and radioactive beams for the nuclear physics applications.
Experimental Collaboration The Gamma Factory study group
Primary author: KRASNY, Mieczyslaw (LPNHE, Uviversity Paris) Presenters: KRASNY, Mieczyslaw (LPNHE, Uviversity Paris); KRASNY, Mieczyslaw (Centre Na- tional de la Recherche Scientifique (FR)); KRASNY, Mieczyslaw (Centre National de la Recherche Sci- entifique (FR)) Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 72 EPS-HEP 2017 / Report of Contributions Directional detection of Dark Matt …
Contribution ID: 105 Type: Parallel Talk
Directional detection of Dark Matter with nuclear emulsion based detector Friday, 7 July 2017 10:45 (15 minutes)
Direct dark matter searches are promising techniques to identify the nature of dark matter parti- cles. A variety of experiments have been developed over the past decades, aiming to detect Weakly Interactive Massive Particles (WIMPs) via their scattering in a detector medium. Exploiting direc- tionality would also give a proof of the galactic origin of dark matter making it possible to have a clear and unambiguous signal to background separation. The directional detection of Dark Matter requires very sensitive experiment combined with highly performant technology. The NEWSdm experiment, based on nuclear emulsions, is proposed to measure the direction of WIMP-induced nuclear recoils. We discuss the potentiality, both in terms of exclusion limits and potential dis- covery, of a directional experiment based on the use of a solid target made by newly developed nuclear emulsions and read-out systems reaching sub-micrometric resolution.
Experimental Collaboration NEWSdm Collaboration
Primary author: NEWSDM, Collaboration (NEWSdm) Presenters: D’AMBROSIO, Nicola (Laboratori Nazionali del Gran Sasso (IT)); D’AMBROSIO, Nicola (INFN) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 73 EPS-HEP 2017 / Report of Contributions Machine Detector Interface for the …
Contribution ID: 106 Type: Parallel Talk
Machine Detector Interface for the e+e- Future Circular Collider Saturday, 8 July 2017 09:50 (25 minutes)
The design of the interaction region (IR) of the positron-electron future circular collider mustcom- ply with various important constraints, imposed by high beam currents, short bunches, high beam energy, high luminosity need for polarization, and crossing scheme. The innovative IR layout of the FCC-ee is based on the crab-waist collision scheme and it will be compatible for all beam en- ergies foreseen, from 175 to 45.6 GeV. It will be shown how the latest layout for the interaction region fulfills all requirements and physical constraints, as confirmed by numerical simulations performed on critical topics such as synchrotron radiation, trapped modes, collective effects, etc. The present magnet layout including solenoid compensation scheme will be discussed, together with the design of the luminosity calorimeter and the designs for the first IR quadrupole design. A refined Geant4 model for the MDI will be described, which allows studying the impact oflumi- nosity and beam backgrounds on the detector occupancy.
Experimental Collaboration
Primary author: BOSCOLO, Manuela (Istituto Nazionale Fisica Nucleare Frascati (IT)) Presenter: BOSCOLO, Manuela (Istituto Nazionale Fisica Nucleare Frascati (IT)) Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 74 EPS-HEP 2017 / Report of Contributions Electroweak resonances in HEFT
Contribution ID: 110 Type: Parallel Talk
Electroweak resonances in HEFT Friday, 7 July 2017 12:00 (15 minutes)
Due to the gap between the known 100 GeV scale and new physics if any, it is natural to employ an effective one-loop Lagrangian (HEFT) for the particles of the Electroweak Symmetry Breaking Sector (WL,ZL and h). To describe any new particles and resonances that may be found at the LHC we employ its unitarized amplitudes, valid even in the presence of new strong interactions. We have assessed the systematics by comparing several such methods, and find that they give qualitatively similar results and succesfully produce unitary amplitudes in the nonperturbative regime. We are thus in a position to describe new physics in the 0.5 TeV-3 TeV (region of validity of our approximations: the effective theory and the equivalence theorem to substitute WL,ZLby the Goldstone bosons of electroweak symmetry breaking). We have also computed the coupling of the EWSBS to the top-antitop and two-photon channels to describe resonances that decay through them or to study their photon-photon production, for example. The approach is universal and useful for many BSM theories at low energy.
Experimental Collaboration
Primary authors: DOBADO, Antonio; Prof. LLANES-ESTRADA, Felipe J. (Universidad Com- plutense de Madrid)
Presenter: DOBADO, Antonio Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 75 EPS-HEP 2017 / Report of Contributions Collider phenomenology of HEFT
Contribution ID: 111 Type: Poster Presentation
Collider phenomenology of HEFT
We report computations of the production cross-section of longitudinal electroweak boson pairs within Effective Field Theory for the Electroweak sector (including the Higgs). Particularly, we focuse on photon-photon production (in e-e+ as well as pp machines), as this is a very clean process allowing access to scalar and tensor resonances. We also employ LEP results on the oblique S,T parameters to constrain the HEFT parameter space.
Experimental Collaboration
Primary authors: DOBADO, Antonio; Prof. LLANES-ESTRADA, Felipe J. (Univ. Complutense de Madrid); SANZ-CILLERO, Juan José (Universidad Complutense de Madrid) Presenter: DOBADO, Antonio Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 76 EPS-HEP 2017 / Report of Contributions TeamScience - a new approach to …
Contribution ID: 113 Type: Parallel Talk
TeamScience - a new approach to engaging 8-13 year olds Friday, 7 July 2017 17:45 (15 minutes)
Science opens new windows on the world, but we must open new windows on science if we are to engage hard-to-reach audiences and improve diversity. Based on the detailed findings of the ASPIRE report from Kings College London, STFC’s new Public Engagement Strategy recognises the need to engage young people earlier and more effectively to deliver the message that science is for everyone. ASPIRES and other research has identified factors contributing to low STEM career aspiration in key groups despite a high level of STEM interest. This session will present the interim findings of January-June 2017 pilot projects in mass communication - TeamScience - designed and developed by STFC’s Strategic Communications team and run as pilot projects in low science capital regions of the UK. The goal is to demonstrate with local examples and inlocal accents that “science” has a role in multiple careers. Its key aim will be to break the “not for me” barrier with regard to STEM career aspirations and take our science to traditionally hard to reach audiences. In this session we will announce initial findings, show how the campaign objectives and target audience were developed using readily available research and insight, and discuss some of the ways we are utilising existing channels and opportunities to roll out the campaign.
Experimental Collaboration
Presenter: STONE, Lucy (STFC) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 77 EPS-HEP 2017 / Report of Contributions The “Beamline for Schools” compe …
Contribution ID: 114 Type: Parallel Talk
The “Beamline for Schools” competition at CERN Saturday, 8 July 2017 10:00 (15 minutes)
In 2014 CERN has started to organize “Beamline for Schools” (BL4S), an annual physics competi- tion for high school students aged 16 and up. In the competition, teams of students from all around the world are invited to propose an experiment to CERN that makes use of a secondary beam of particles with momenta of up to 10 GeV/c from CERN’s Proton Synchrotron (PS). The students have to describe their experiment in a document of up to 1000 words and to complement their application with a 1-minute video. CERN provides a number of various detectors, magnets and other components to the students and allows them to bring their own equipment. In the first three years of the competition, more than 5500 students from all around the world have participated and in total six winning teams have been selected and have been invited to CERN for 12 days each. Every year two CERN scientists, together with the students prepare and operate the winner’s ex- periments. We will describe the challenges linked to the Beamline for Schools competition, focussing on the communication with all teams in the preparatory phase of the competition, the technical imple- mentation of the winning experiments, the operation of the experiments as well as on the support for the teams analysing the data and preparing publications of the results. We will also report on the impact of the competition onto the students, the outside world but also onto the CERN labora- tory. BL4S receives mayor support from private donators with the help of the CERN and Society Foundation. Experience with the funding scheme will also be reported. Finally, we will present an outlook for the future of the BL4S competition, taking into account the shutdown of the accelerators at CERN in 2019 and 2020.
Experimental Collaboration
Primary authors: JOOS, Markus (CERN); REMBSER, Christoph (CERN); YILDIZ, Cenk (Uni- versity of California Irvine (US)); DOZEN, Candan (Cukurova University (TR)); WYSZYNSKI, Oskar (CERN); VAFEIADIS,Theodoros (CERN); RISTIC, Branislav (CERN/Universite de Geneve (CH)); CARLI, Ina (Charles University (CZ)); ARETZ, Sarah (CERN & Universität Potsdam) Presenter: JOOS, Markus (CERN) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 78 EPS-HEP 2017 / Report of Contributions Detectors for the “Beamline for Sc …
Contribution ID: 115 Type: Poster Presentation
Detectors for the “Beamline for Schools” competition at CERN
In 2014 CERN has started to organize “Beamline for Schools” (BL4S), an annual, worldwide physics competition for high school students. The students are invited to propose a particle physics exper- iment to CERN using a secondary beam of particles (electrons, protons, pions, kaons, muons) with momenta of up to 10 GeV/c. CERN also provides a number of different detectors that the students may use for their experiment. For the first edition of BL4S in 2014, that pool of detectors was limited to Cherenkov counters, delay wire chambers, scintillation counters and lead glass calorimeters.
In order to allow the students to propose a wider range of experiments, the small BL4S team at CERN follows modern detector trends and keeps adding detectors to that pool of equipment. We will describe the design of delay wire chambers, MRPCs and MicroMegas as well as their production and testing in collaboration with experts from the CERN detector groups. In addition, we will provide details about the software developed to read out these detectors. Finally, results obtained with the MRPCs in 2016 will be presented.
Experimental Collaboration
Primary authors: JOOS, Markus (CERN); YILDIZ, Cenk (University of California Irvine (US)); DOZEN, Candan (Cukurova University (TR)); WYSZYNSKI, Oskar (CERN); VAFEIADIS,Theodoros (CERN); RIS- TIC, Branislav (CERN/Universite de Geneve (CH)); CARLI, Ina (Charles University (CZ)) Presenter: JOOS, Markus (CERN) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 79 EPS-HEP 2017 / Report of Contributions Status and Prospects of e+e- Facto …
Contribution ID: 116 Type: Parallel Talk
Status and Prospects of e+e- Factories Saturday, 8 July 2017 09:25 (25 minutes)
A review of the state of the art of presently working e+e- colliders, from low to high energy, will be presented, with a brief summary of performances. A review of proposed e+e- colliders will also be presented with highlights on the technical challenges.
Experimental Collaboration
Primary author: Dr BIAGINI, Maria Enrica (INFN-LNF) Presenter: Dr BIAGINI, Maria Enrica (INFN-LNF) Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 80 EPS-HEP 2017 / Report of Contributions The muon g-2 and dark matter in…
Contribution ID: 117 Type: Parallel Talk
The muon g-2 and dark matter in the MSSM at 100 TeV Friday, 7 July 2017 17:45 (15 minutes)
We study the muon g-2 and neutralino dark matter as explained by the MSSM where the squarks and 3rd generation sleptons are decoupled. Particularly, we focus on constraints from current and future dark matter experiments such as PandaX-II and LUX-2016 as well as current bounds from collider searches. Using the constraints on the MSSM from the muon g-2 and DM searches, we study constraints from multilepton + MET searches at 8 TeV LHC, and the prospects for searches at 100 TeV proton-proton collision energies.
Experimental Collaboration
Primary authors: TALIA, Matthew (University of Sydney); KOBAKHIDZE, Archil (The University of Sydney); WU, Lei Presenter: TALIA, Matthew (University of Sydney) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 81 EPS-HEP 2017 / Report of Contributions Accelerator designs and R&D for t …
Contribution ID: 119 Type: Parallel Talk
Accelerator designs and R&D for the Electron-Ion Collider Saturday, 8 July 2017 09:00 (25 minutes)
An Electron Ion-Collider (EIC) has been highlighted as the highest priority for new construction in the DoE Office of Nuclear Physics. This is a very challenging accelerator that aims atachieving high luminosity and polarization collisions of electrons with multiple ions species and variable center of mass. Alternative designs are pursued at Jefferson Laboratory (JLEIC) and Brookhaven National Labo- ratory (eRHIC) each capitalizing on the existing CEBAF and RHIC facilities respectively. I will overview the design options at JLAB and BNL, the accelerator R&D necessary to validate the de- signs and will explore areas of potential synergy and collaboration.
Experimental Collaboration
Primary author: PILAT, Fulvia (Jefferson Laboratory) Presenter: PILAT, Fulvia (Jefferson Laboratory) Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 82 EPS-HEP 2017 / Report of Contributions The photon PDF from high-mass D…
Contribution ID: 120 Type: Parallel Talk
The photon PDF from high-mass Drell Yan data at the LHC using xFitter Thursday, 6 July 2017 18:15 (15 minutes)
We present the xFitter project (former HERAFitter) which provides a unique open-source software framework for the determination of the proton’s PDFs and for the interpretation of the physics analyses in the context of Quantum Chromodynamics. We highlight the new xFitter software release which includes state-of-the-art theoretical developments. We present a novel determination of the photon PDF from fits to the recent ATLAS measurements of high-mass Drell-Yan production at 8 TeV. This analysis is based on the new xFitter framework which has required improvements bothin the APFEL program, to account for NLO QED effects for the first time, and in the aMCfast in- terface to account for the photon-initiated contributions in the EW calculations within Mad- Graph5_aMC@NLO. The results are compared with other recent QED fits and determinations of the photon PDF,where consistent results are found.
Experimental Collaboration
Primary authors: RADESCU, Voica Ana Maria (University of Oxford (GB)); PLACAKYTE, Ringaile; GLAZOV, Alexander (Deutsches Elektronen-Synchrotron (DE))
Presenter: Mr GIULI, Francesco (University of Oxford (GB)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 83 EPS-HEP 2017 / Report of Contributions Prompt photon production and …
Contribution ID: 121 Type: Parallel Talk
Prompt photon production and photon-jet correlations with POWHEG Thursday, 6 July 2017 17:45 (15 minutes)
Photon production, also in association with jets, is an important probe of the quark gluon plasma. For many decades, theoretical predictions of prompt photon production have been based on next- to-leading order (NLO) calculations. We present a recalculation of this process at NLO and combine it with parton showers (PS) in the POWHEG framework. This allows for the first time full NLO+PS simulations, including also hadronisation and detector effects. Of particular phenomenological importance are the induced modifactions of the transverse-momentum balance and azimuthal angle asymmetry between the photon and recoiling jet, present now already in pp and not only in AA collisions.
Experimental Collaboration
Primary author: KLASEN, Michael Presenter: KLASEN, Michael Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 84 EPS-HEP 2017 / Report of Contributions Direct detection of neutralino dark …
Contribution ID: 122 Type: Parallel Talk
Direct detection of neutralino dark matter with DM@NLO Thursday, 6 July 2017 17:00 (15 minutes)
We present a full NLO QCD calculation of neutralino scattering on protons or neutrons in the Minimal Supersymmetric Standard Model. We match the results of the NLO QCD calculation to the scalar and axial-vector operators in the effective field theory approach. These govern the spin-independent and spin-dependent detection rates, respectively. The calculations have been performed for general bino, wino and higgsino decompositions of neutralino dark matter and re- quired a novel tensor reduction method of loop integrals with vanishing relative velocities and Gram determinants. Numerically, the NLO QCD effects are shown to be of at least of similar size and sometimes larger than the currently estimated nuclear uncertainties. We also demonstrate the interplay of the direct detection rate with the relic density when consistently analyzed with the program DM@NLO.
Experimental Collaboration
Primary author: KLASEN, Michael Presenter: KLASEN, Michael Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 85 EPS-HEP 2017 / Report of Contributions Soft gluon resummation for associ …
Contribution ID: 123 Type: Parallel Talk
Soft gluon resummation for associated gluino-gaugino production at the LHC Thursday, 6 July 2017 18:15 (15 minutes)
We present a threshold resummation calculation for the associated production of gluinos and gaug- inos at the LHC to the next-to-leading logarithmic accuracy. Analytical results are presented for the process-dependent soft anomalous dimension and the hard function. The resummed results are matched to a full next-to-leading order calculation, for which we have generalised the previously known results to the case of supersymmetric scenarios featuring non-universal squark masses. Numerically, the next-to-leading logarithmic contributions increase the total next-to-leading or- der cross section by 7 to 20% for central scale choices and gluino masses of 3 to 6 TeV, respectively, and reduce its scale dependence typically from up to ±12% to below ±3%.
Experimental Collaboration
Primary author: KLASEN, Michael Presenter: KLASEN, Michael Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 86 EPS-HEP 2017 / Report of Contributions Prospects for experiments based o …
Contribution ID: 124 Type: Poster Presentation
Prospects for experiments based on proton-driven electron beams
The prospects for particle-physics experiments based on an AWAKE-like electron acceleration scheme will be reviewed. These include high energy electron test beams, searches for very weakly interacting particles in fixed target experiments as well as electron-proton and electron-ion collid- ers covering a wide range of energies up to a very high energy electron-proton (VHEeP) collider with nominal centre-of-mass energy of 9 TeV, a factor of 30 higher than HERA. First estimates of achievable beam energy, repetition rates and luminosities will be presented. The physics prospects allowed by these parameters will then be discussed.
Experimental Collaboration AWAKE
Primary author: Mr CALDWELL, Allen Christopher (Max-Planck-Institut fur Physik (DE)) Presenter: Mr CALDWELL, Allen Christopher (Max-Planck-Institut fur Physik (DE)) Session Classification: Poster session
Track Classification: Accelerators for HEP
October 6, 2021 Page 87 EPS-HEP 2017 / Report of Contributions Implications of strict gauge invari …
Contribution ID: 125 Type: Parallel Talk
Implications of strict gauge invariance for particle spectra and precision observables Thursday, 6 July 2017 12:00 (15 minutes)
The discovery of the Higgs physics together with the excellent performance of the LHCallowto make precision tests of Brout-Englert-Higgs Physics. At this level, it becomes important to fully understand the theory behind this physics. As was already pointed out more than 35 years ago, there is a paradox in the standard model: The elemen- tary fields should not be the particles we observe, as they are unphysical, since they aregauge- dependent. Nonetheless, it appears that we see them. The resolution of this paradox shows that the standard model is a very special theory, where the description in both languages is (almost) identical. However, this can drastically change beyond the standard model, even altering usual predictions of particle spectra. It could also subtly alter precision measurements within the standard model. This yields testable predictions, which can (mostly) be derived with little more effort than in standard phenomenology.
After sketching the underlying theory ideas, these predictions for experimental signatures willbe presented.
Experimental Collaboration
Primary author: MAAS, Axel Torsten (University of Graz) Presenter: MAAS, Axel Torsten (University of Graz) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 88 EPS-HEP 2017 / Report of Contributions AugerPrime: the upgrade program …
Contribution ID: 126 Type: Parallel Talk
AugerPrime: the upgrade program of the Pierre Auger Observatory. Saturday, 8 July 2017 09:15 (15 minutes)
The highest-energy cosmic rays measured with the Pierre Auger Observatory over the pastdecade provide us with unprecedented glimpses into their origin and properties. Improvements to this un- derstanding will come from a major upgrade stage of the Observatory denominated AugerPrime. The upgrade program will include new plastic scintillator detectors on top of all water-Cherenkov detectors, a faster and more powerful electronics, and the extension of the dynamic range. Complementing the water-Cherenkov detectors of the surface array with scintillator detectors, we will be able to evaluate the muonic component of the showers and thus to estimate the primary mass of the ultra high energy cosmic rays on an event by event basis, reaching the region of the flux suppression. The enhanced information on composition will allow us to perform anisotropy studies on selections of mass groups and to explore the hadronic interactions in an unexplored energy and kinematic region. After introducing the physics motivation for upgrading the Auger Observatory, the plannedde- tector upgrade and the technical realization will be presented, with an emphasis on the expected performance and the improved physics sensitivity.
Experimental Collaboration Pierre Auger Collaboration
Primary author: CATALDI, Gabriella Presenter: CATALDI, Gabriella Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 89 EPS-HEP 2017 / Report of Contributions Measurements of the underlying e …
Contribution ID: 127 Type: Parallel Talk
Measurements of the underlying event activity and double parton scattering processes using the CMS detector Friday, 7 July 2017 18:25 (15 minutes)
Recent results on the double parton scattering studies and measurement of the underlying event activity, performed using proton-proton collisions data collected using the CMS detector are presented. Comparisons to previous results at different center of mass energies are also reported. Latest tests of double parton scattering, underlying event tunes, minimum bias, and diffraction are made by comparing the CMS Run I and RunII data with the latest theoretical predictions. Studies used to derive and test the new CMS underlying event tune, obtained through the jet kinematic and global event variables in top quark-antiquark events, are also described.
Experimental Collaboration
Presenter: Ms MEHTA, Ankita (Panjab University (IN)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 90 EPS-HEP 2017 / Report of Contributions The CMS Tracker upgrade for HL-…
Contribution ID: 129 Type: Parallel Talk
The CMS Tracker upgrade for HL-LHC Saturday, 8 July 2017 09:15 (15 minutes)
The LHC machine is planning an upgrade program which will smoothly bring the luminosityat about 5*10^34cm-2s-1 in 2028, to possibly reach an integrated luminosity of 3000fb-1 by the end of 2037. This High Luminosity LHC scenario, HL-LHC, will require a preparation program of the LHC detectors known as Phase-2 upgrade. The current CMS Outer Tracker, already running beyond design specifications, and CMS Phase1 Pixel Detector will not be able to survive HL-LHC radiation conditions and CMS will need completely new devices, in order to fully exploit the high- demanding operating conditions and the delivered luminosity. The new Outer Tracker should have also trigger capabilities. To achieve such goals, R&D activities are ongoing to explore options either for the Outer Tracker, either for the pixel Inner Tracker. Solutions are being developed that would allow including tracking information at Level-1. The design choices for the Tracker upgrades are discussed along with some highlights of the R&D activities.
Experimental Collaboration CMS
Primary author: AHUJA, Sudha (UNESP - Universidade Estadual Paulista (BR)) Presenter: AHUJA, Sudha (UNESP - Universidade Estadual Paulista (BR)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 91 EPS-HEP 2017 / Report of Contributions Search for vector-like quarks and e …
Contribution ID: 131 Type: Parallel Talk
Search for vector-like quarks and excited quarks at CMS Saturday, 8 July 2017 11:45 (15 minutes)
We present results of searches for massive top and bottom quark partners using proton-proton col- lision data collected with the CMS detector at the CERN LHC at a center-of-mass energy of 8 and 13 TeV. These fourth-generation vector-like quarks are postulated to solve the Hierarchy problem and stabilize the Higgs mass, while escaping constraints on the Higgs cross section measurement. The vector-like quark can be produced singly or in pair and their decays result in avarietyoffinal states, containing top and bottom quarks, gauge and Higgs bosons. We search using several cate- gories of reconstructed objects, from multi-leptonic to fully hadronic final states. We set exclusion limits on both the vector-like quark mass and cross sections, for combinations of the vector-like quark branching ratios.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: RAUCO, Giorgia (Universitaet Zuerich (CH)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 92 EPS-HEP 2017 / Report of Contributions Search for diboson resonances dec …
Contribution ID: 132 Type: Parallel Talk
Search for diboson resonances decaying into W, Z and H bosons at CMS Saturday, 8 July 2017 09:45 (15 minutes)
Beyond the standard model theories like Extra-Dimensions and Composite Higgs scenarios predict the existence of very heavy resonances compatible with a spin 0 (Radion),spin 1 (W’, Z’) and spin 2 (Graviton) particle with large branching fractions in pairs of standard model bosons and negli- gible branching fractions to light fermions. We present an overview of searches for new physics containing W, Z or H bosons in the final state, using proton-proton collision data collected with the CMS detector at the CERN LHC. Many results use novel analysis techniques to identify and re- construct highly boosted final states that are created in these topologies. These techniques provide increased sensitivity to new high-mass particles over traditional search methods.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: LANGE, Clemens (CERN) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 93 EPS-HEP 2017 / Report of Contributions Search for new resonances couplin …
Contribution ID: 133 Type: Parallel Talk
Search for new resonances coupling to third generation quarks at CMS Saturday, 8 July 2017 12:15 (15 minutes)
We present a search for new massive particles decaying to heavy-flavour quarks with the CMS detector at the LHC. The prominent signature is the resonant production of top quark pairs. Decay channels to vector-like top partner quarks, such as T’, are also considered for the first time. We use proton-proton collision data recorded at a centre-of-mass energy of 13 TeV. The search is performed in both hadronic and semileptonic decay channels of the top quark or of the top-partners. Due to the high momentum range in which these objects are produced, specific reconstruction algorithm and selections are employed to address the identification of these boosted signatures.The results are presented in terms of upper limits on the model cross section.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: HALLER, Johannes (Hamburg University (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 94 EPS-HEP 2017 / Report of Contributions Searches for Dark Matter via …
Contribution ID: 134 Type: Poster Presentation
Searches for Dark Matter via Mono-Higgs signatures with the CMS experiment
This poster presents the results from the Mono-Higgs analyses performed with the CMS experi- ment at the LHC using the full 2016 data set. The results are interpret in canonical Dark Matter models.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: MINIELLO, Giorgia (Universita e INFN, Bari (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 95 EPS-HEP 2017 / Report of Contributions Performance and track-based align …
Contribution ID: 135 Type: Parallel Talk
Performance and track-based alignment of the upgraded CMS pixel detector Thursday, 6 July 2017 09:30 (15 minutes)
The Compact Muon Solenoid (CMS) is a multi-purpose detector constructed in order to studyhigh- energy particle collisions in the Large Hadron Collider (LHC) at CERN. The all-silicon design of the tracking system of the CMS experiment provided excellent resolution for charged tracks and an efficient tagging of jets during Run1 and Run2 ofLHC. As CMS upgraded and installed the pixel detector during the shutdown in the beginning of 2017, the position and orientation of tracker needed to be determined with a precision of several mi- crometers. The alignment also needs to be quickly recalculated each time the state oftheCMS magnet is changed between 0T and 3.8T. We present latest results of the CMS tracker performance in the 2017 run, with a special focus on alignment and resolution performance using several million reconstructed tracks from collisions and cosmic rays data.
Experimental Collaboration CMS
Primary author: BOTTA, Valeria (Deutsches Elektronen-Synchrotron (DE)) Presenter: BOTTA, Valeria (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 96 EPS-HEP 2017 / Report of Contributions Measurement of high-mass dilepto …
Contribution ID: 136 Type: Parallel Talk
Measurement of high-mass dilepton and diphoton production with the CMS-TOTEM Precision Proton Spectrometer Thursday, 6 July 2017 09:15 (15 minutes)
The measurements of dilepton and diphoton production in photon-photon fusion with theCMS- TOTEM Precision Proton Spectrometer (CT-PPS) are presented. For the first time, exclusive dilep- ton production at high masses have been observed in the CMS detector while one or two outgo- − ing protons are measured in CT-PPS using around 10~fb 1 of data accumulated in 2016 during high-luminosity LHC operation. These first results show a good understanding, calibration and alignment of the new CT-PPS detectors installed in 2016. Preliminary results and expectations concerning the search for high-mass exclusive diphoton production are discussed.
Experimental Collaboration
Presenter: SHCHELINA, Ksenia (Universita e INFN Torino (IT)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 97 EPS-HEP 2017 / Report of Contributions Reconstruction and identification …
Contribution ID: 137 Type: Parallel Talk
Reconstruction and identification of hadronic objects with CMS Thursday, 6 July 2017 16:30 (15 minutes)
Performance & validation of new developments of reconstruction algorithms of several hadronic objects using data collected by the CMS experiment in 2016 at a centre-of-mass energy of 13 TeV are presented. The jet energy and missing transverse momentum scales are measured in MC and data. Alike- lihood based discriminator is used to distinguish jets originating from quarks and gluons, and multivariate techniques are employed to distinguish pile up jets. Algorithms are used to identify large radius jets reconstructed from the decay products of highly Lorentz boosted W bosons and top quarks, and the efficiency and background rejection rates of these algorithms are measured. Recent cutting edge developments of heavy flavor identification algorithms are discussed, which exploit the power of deep neural networks. The expected performance of these algorithms in 2017, when CMS will start to collect data with an upgraded pixel detector, will be also shown. The CMS Collaboration is pushing the heavy flavor identification beyond the traditional identification ofb jets. The talk will also discuss the implementation of algorithms specialized to the boosted topolo- gies, and the identification of jets originated from charm quarks. Tau leptons decaying via hadronic modes are reconstructed and identified using Hadron plus Strips (HPS) algorithm. The electromagnetic strip reconstruction used by this algorithm is improved to better model signal of pi0 from tau decays by allowing the strip size to dynamically changebased on the strip energy. This improves the energy response and removes the tau footprint from isola- tion area. In addition to this, improvement to discriminators combining isolation and tau life time variables, and anti-electron in multivariate analysis technique are also developed.
Experimental Collaboration CMS
Primary author: VERZETTI, Mauro (University of Rochester (US)) Presenter: VERZETTI, Mauro (University of Rochester (US)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 98 EPS-HEP 2017 / Report of Contributions Searches for supersymmetry via st …
Contribution ID: 138 Type: Parallel Talk
Searches for supersymmetry via strong production in fully hadronic final states at CMS Thursday, 6 July 2017 15:00 (15 minutes)
We report on searches for new physics in events with one or more jets and missing transverse energy. The searches use proton-proton collision data recorded in 2016 by the CMS experiment at the LHC. The results are interpreted in terms of several simplified models of supersymmetry.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: SCHOENENBERGER, Myriam (Eidgenoessische Technische Hochschule Zuerich (CH))
Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 99 EPS-HEP 2017 / Report of Contributions Searches for supersymmetry via st …
Contribution ID: 139 Type: Parallel Talk
Searches for supersymmetry via strong production in events with one or more leptons at CMS Thursday, 6 July 2017 15:30 (15 minutes)
We report on searches for new physics in events with one or more charged leptons, jets and missing transverse momentum. The searches use proton-proton collision data recorded in 2016 by theCMS experiment at the LHC. The results are interpreted in terms of several simplified models ofpair production of supersymmetric partners of gluons or quarks.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: SCHOMAKERS, Christian (Rheinisch-Westfaelische Tech. Hoch. (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 100 EPS-HEP 2017 / Report of Contributions Search for SUSY with a customized …
Contribution ID: 140 Type: Poster Presentation
Search for SUSY with a customized top tagger with the CMS experiment
We present searches for supersymmetry in the all-hadronic final state using a customized top tagger. The focus of the studies is on the direct pair production of third-generation squarks. The analysis is performed using the data set recorded by the CMS experiment at the LHC in pp collisions at a center-of-mass energies of 13 TeV, with an integrated luminosity of 35.9 1/fb. The results are interpreted in several simplified models with top quark jets in the final state.
Experimental Collaboration
Presenter: WEI, Hua (University of California Riverside (US)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 101 EPS-HEP 2017 / Report of Contributions Searches for production of third g …
Contribution ID: 141 Type: Parallel Talk
Searches for production of third generation squarks at CMS Thursday, 6 July 2017 17:30 (15 minutes)
We report on searches for supersymmetric partners of top and bottom quarks. The searches use proton-proton collision data recorded in 2016 by the CMS experiment at the LHC. The results are interpreted under several assumptions for the decay of these particles.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: SUAREZ, Indara (Univ. of California Santa Barbara (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 102 EPS-HEP 2017 / Report of Contributions Search for supersymmetry in even …
Contribution ID: 142 Type: Parallel Talk
Search for supersymmetry in events with photons at CMS Friday, 7 July 2017 15:00 (15 minutes)
We report on searches for new physics in events with at least one photon, jets and missing trans- verse energy. The searches use proton-proton collision data recorded in 2016 by the CMS experi- ment at the LHC. The results are interpreted in terms of several simplified models of supersymme- try.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: WEINBERG, Marc Gabriel (Carnegie-Mellon University (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 103 EPS-HEP 2017 / Report of Contributions Search for electroweak production …
Contribution ID: 143 Type: Parallel Talk
Search for electroweak production of supersymmetry at CMS Friday, 7 July 2017 14:45 (15 minutes)
We report on searches for supersymmetry via pair production of partners of electroweak gauge and Higgs bosons. The searches use proton-proton collision data recorded in 2016 by theCMS experiment at the LHC. The results are interpreted in terms of several simplified models ofsuper- symmetry.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: LIU, Miaoyuan (Fermi National Accelerator Lab. (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 104 EPS-HEP 2017 / Report of Contributions Search for supersymmetry with co …
Contribution ID: 144 Type: Parallel Talk
Search for supersymmetry with compressed mass spectra or decays via Higgs bosons at CMS Thursday, 6 July 2017 17:00 (15 minutes)
We report on searches for supersymmetry in scenarios where the mass differences between the lightest supersymmetric particles are small, or where their decay chains involve a Higgs boson. The searches use proton-proton collision data recorded in 2016 by the CMS experiment atthe LHC. The results are interpreted in terms of several simplified models of supersymmetry.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: HEIDEGGER, Constantin (Eidgenoessische Technische Hochschule Zuerich (CH)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 105 EPS-HEP 2017 / Report of Contributions Searches for new heavy resonance …
Contribution ID: 145 Type: Parallel Talk
Searches for new heavy resonances in final states with leptons and photons Friday, 7 July 2017 10:45 (15 minutes)
Numerous new physics models, e.g., theories with extra dimensions and various gauge-group ex- tensions of the standard model, predict the existence of new particles decaying to leptons and photons. This talk presents CMS searches for new resonances in the dilepton, lepton+MET, dipho- ton, and other final states that include leptons and photons, focusing on the recent results obtained using data collected during the 2016 run.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: RADBURN-SMITH, Benjamin (Seoul National University (KR)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 106 EPS-HEP 2017 / Report of Contributions Searches for non-resonant new ph …
Contribution ID: 146 Type: Parallel Talk
Searches for non-resonant new phenomena in final states with leptons and photons Friday, 7 July 2017 10:15 (15 minutes)
Many new physics models, e.g., compositeness, see-saw, and extra dimensions models, are ex- pected to manifest themselves in the final states with leptons and photons. This talk presents searches for new non-resonant phenomena in the final states that include leptons and photons, focusing on the recent results obtained using data collected during the 2016 run.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: GONZALEZ LOPEZ, Oscar (Centro de Investigaciones Energéti cas Medioambientales y Tecno) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 107 EPS-HEP 2017 / Report of Contributions Searches for new physics in dijet a …
Contribution ID: 147 Type: Parallel Talk
Searches for new physics in dijet and multijet final states Friday, 7 July 2017 09:30 (15 minutes)
Results of searches for new physics in the dijet and multijet final states are presented. These include model-independent and model-specific searches using the dijet invariant mass spectrum andthe dijet angular distributions, searches for black holes, quantum and microscopic, in multijet events, as well as searches for RPV SUSY in events with paired dijets. This talk focuses on the recent results obtained using data collected during the 2016 run.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: PREIATO, Federico (Sapienza Universita e INFN, Roma I (IT)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 108 EPS-HEP 2017 / Report of Contributions Searches for new physics in lepton …
Contribution ID: 148 Type: Parallel Talk
Searches for new physics in lepton+jet final states Saturday, 8 July 2017 12:30 (15 minutes)
Results of searches for new particles such as leptoquarks, heavy neutrinos, and W bosons with right-handed couplings in final states with leptons (charged or neutral) and jets are presented. The emphasis is given to the recent results obtained using data collected in the 2016 runofthe LHC.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: STOVER, Marc (Hamburg University (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 109 EPS-HEP 2017 / Report of Contributions Searches for dark matter in hadron …
Contribution ID: 149 Type: Parallel Talk
Searches for dark matter in hadronic final states Thursday, 6 July 2017 15:00 (15 minutes)
Searches in CMS for dark matter in final states with invisible particles recoiling against hadronic final states are presented. Various topologies and kinematic variables are explored, as wellas jet substructure as a means of tagging heavy bosons. The focus of the talk is the recent results obtained using data collected in 2016 run of the LHC.
Experimental Collaboration CMS
Primary author: PINNA, Deborah Presenter: PINNA, Deborah Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 110 EPS-HEP 2017 / Report of Contributions Searches for dark matter in non- …
Contribution ID: 150 Type: Poster Presentation
Searches for dark matter in non-hadronic final states
Searches in CMS for dark matter in final states with invisible particles recoiling against leptons and photons are presented. Various topologies are explored, covering several specific dark-matter production modes. The talk focuses on the recent results obtained using data collected in the2016 run of the LHC.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenters: CMS COLLABORATION; BUCHANAN, James Joseph (University of Wisconsin-Madi- son (US)) Session Classification: Poster session
Track Classification: Dark Matter
October 6, 2021 Page 111 EPS-HEP 2017 / Report of Contributions Searches for long-lived particles a …
Contribution ID: 151 Type: Parallel Talk
Searches for long-lived particles and other non-conventional signatures Friday, 7 July 2017 17:30 (15 minutes)
Many extensions of the standard model including SUSY predict new particles with long lifetimes, such that the position of their decay is measurably displaced from their production vertex, and particles giving rise to other non-conventional signatures. We present recent results of searches for long-lived particles and other non-conventional signatures obtained using data recorded by the CMS experiment at Run-II of the LHC.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: ADAMS, Todd (Florida State University (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 112 EPS-HEP 2017 / Report of Contributions Global fits of the scalar singlet mo…
Contribution ID: 153 Type: Parallel Talk
Global fits of the scalar singlet model using GAMBIT Thursday, 6 July 2017 17:30 (15 minutes)
I will present the latest results for global fits to the Higgs portal scalar singlet extended standard model using complementary probes of dark matter. In doing so I will introduce the new global and modular beyond the standard model inference tool (GAMBIT), which we use to achieve these results in a statistically consistent and modular way.
Experimental Collaboration GAMBIT Collaboration
Primary author: Mr MCKAY, James (Imperial College London) Presenter: Mr MCKAY, James (Imperial College London) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 113 EPS-HEP 2017 / Report of Contributions Measurements of event properties …
Contribution ID: 154 Type: Parallel Talk
Measurements of event properties with jets in CMS Friday, 7 July 2017 10:15 (15 minutes)
We present results on measurements of characteristics of events with jets, from jet-charge over investigations of shapes to jet mass distributions. The measurements are compared to theoretical prediction including those matched to parton shower and hadronization.
Experimental Collaboration CMS
Presenter: PASTRONE, Nadia (Universita e INFN Torino (IT)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 114 EPS-HEP 2017 / Report of Contributions Multi-differential jet cross sections …
Contribution ID: 155 Type: Parallel Talk
Multi-differential jet cross sections in CMS Friday, 7 July 2017 09:45 (15 minutes)
We present measurements of multi-differential Jet cross sections over a wide range in transverse momenta from inclusive jets to multi-jet final states. We present studies on the impact these measurements have on the determination of the strong coupling alphas as well as on parton density functions. We also show angular correlations in multi-jet events at highest center-of-mass energies and compare the measurements to theoretical predictions including higher order parton radiation and coherence effects.
Experimental Collaboration CMS
Presenter: KOKKAS, Panos (University of Ioannina (GR)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 115 EPS-HEP 2017 / Report of Contributions CMS measurements of top quark p …
Contribution ID: 156 Type: Parallel Talk
CMS measurements of top quark pair production Friday, 7 July 2017 12:00 (15 minutes)
Measurements of the inclusive and differential top quark pair production cross section in proton- proton collisions at 5.02 TeV, 7 TeV, 8 TeV and 13 TeV are presented using the CMS detector. The total cross section is measured using the lepton+jets, dilepton and fully hadronic channels, includ- ing the tau-dilepton and tau+jets modes. Indirect constraints on both the top quark mass and ɑS are obtained through their relation to the inclusive cross section. Measurements of top quark pair production in addition with jets, including heavy-flavoured jets are also presented. In addition, differential cross sections are measured and are given as functions of various kinematic observ- ables, including the transverse momentum and rapidity of the (anti)top quark and the top-antitop system and the jets and leptons of the event final state. The measurements are extended tothe TeV range using jet substructure techniques to exploit the boosted regime. The multiplicity and kinematic distributions of the jets produced in addition to the top pair are also investigated. The results are combined and confronted with precise theory calculations.
Experimental Collaboration CMS
Presenter: ARNDT, Till Michael (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 116 EPS-HEP 2017 / Report of Contributions Measurement of single top quark p …
Contribution ID: 157 Type: Parallel Talk
Measurement of single top quark production with CMS Friday, 7 July 2017 12:45 (15 minutes)
Several measurements of single top quark production in proton-proton collisions at the LHC at centre-of-mass energies of 7, 8 and 13 TeV, using data collected with the CMS experiment, are presented. The analyses investigate separately the productions of top via t-channel exchange, in association with a W boson (tW) or via the s-channel. Final states with at least one charged lepton and one b-jet are explored to measure inclusive production cross sections. Fiducial and differential cross section measurements in the t-channel are also reported. The measurements can be used to constrain directly the Vtb CKM matrix element by comparing with the most precise standard model theory predictions. Measurements of rare processes involving a top quark and a neutral EWK boson (Z or photon) are also discussed.
Experimental Collaboration CMS
Presenter: ANDREA, Jeremy (Institut Pluridisciplinaire Hubert Curien (FR)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 117 EPS-HEP 2017 / Report of Contributions Top quark event modelling and ge …
Contribution ID: 158 Type: Parallel Talk
Top quark event modelling and generators in CMS Saturday, 8 July 2017 09:45 (15 minutes)
State-of-the-art theoretical predictions accurate to next-to-leading order QCD interfaced with Pythia8 and Herwig++ event generators are tested by comparing the unfolded ttbar differential data col- lected with the CMS detector at 8 and 13 TeV. These predictions are also compared with the un- derlying event activity distributions in ttbar events using CMS proton-proton data collected ata center of mass energy of 13 TeV.
Experimental Collaboration CMS
Presenter: YAZGAN, Efe (Chinese Academy of Sciences (CN)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 118 EPS-HEP 2017 / Report of Contributions CMS Measurements of the top qua …
Contribution ID: 159 Type: Parallel Talk
CMS Measurements of the top quark mass and width Friday, 7 July 2017 15:15 (15 minutes)
Measurements of the top quark mass and width using proton-proton collisions at the LHC at centre- of-mass energies of 7, 8 and 13 TeV are presented. The analyses used different decay channels and production modes of the top quark. Several techniques are investigated based on the reconstruc- tion of the top kinematics from final state products, using leptonic decays with a J/psi, the shapes of top quark decay distributions, or comparing the production rates to the theory expectations, among others. The results are employed to determine the top quark mass and the results further- more combined and compared to the world average. The dependence of the mass measurement on the kinematic phase space is furthermore investigated, including measuring the difference be- tween the masses of top and antitop quarks.
Experimental Collaboration CMS
Presenter: PALENCIA CORTEZON, Jose Enrique (Universidad de Oviedo (ES)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 119 EPS-HEP 2017 / Report of Contributions Measurements of the top quark pr …
Contribution ID: 160 Type: Parallel Talk
Measurements of the top quark properties at decay with CMS Friday, 7 July 2017 17:00 (15 minutes)
Several measurements of top quark properties are presented using data collected by the CMS ex- periment at different centre-of-mass-energies. The properties are mostly probed in the decayof the top quarks. The Wtb couplings are probed by measuring the helicity fractions in single topand ttbar topologies or by inspecting a V-A vertex structure of the coupling. Furthermore, searches for flavor-changing neutral currents involving top quarks are discussed including tZq, tɣq,tgq and tHq couplings. Limits are set on anomalous top couplings and the results are furthermore re- interpreted as searches for new physics inducing deviations from the standard model predictions.
Experimental Collaboration CMS
Presenter: CASTRO, Andrea (Universita e INFN, Bologna (IT)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 120 EPS-HEP 2017 / Report of Contributions Measurements of the associated pr …
Contribution ID: 161 Type: Parallel Talk
Measurements of the associated production of top quark pairs with bosons or other top quarks Saturday, 8 July 2017 09:15 (15 minutes)
A comprehensive set of measurements of top quark pair production in association with EWK bosons (W, Z or ɣ) is presented at different centre-of-mass energies. The results are compared to the theory predictions and re-interpreted as searches for new physics inducing deviations from the standard model predictions using an effective field theory approach. The status of the search for double-ttbar pair production combining different final states is also reported.
Experimental Collaboration CMS
Presenter: CUEVAS MAESTRO, Javier (Universidad de Oviedo) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 121 EPS-HEP 2017 / Report of Contributions Measurements of the top quark pr …
Contribution ID: 162 Type: Parallel Talk
Measurements of the top quark properties at production with CMS Friday, 7 July 2017 17:15 (15 minutes)
Several measurements of top quark properties are presented using data collected by the CMS ex- periment at different centre-of-mass-energies. The properties are mostly probed in production of the top quarks. The charge asymmetry is measured inclusively and differentially probing anoma- lous couplings to the gluons at production mode. These measurements are extended searching for asymmetries in CP-odd operators in production and decay. The measurement of the spin density matrix in different final states (lepton+jets and dileptons) is discussed as well as the measurement of the top quark polarization in single top and ttbar events. The results are compared to the state- of-the-art predictions, when available, and re-interpreted as searches for new physics inducing deviations from the standard model predictions.
Experimental Collaboration CMS
Presenter: SAVITSKYI, Mykola (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 122 EPS-HEP 2017 / Report of Contributions Recent developments in the comp …
Contribution ID: 163 Type: Parallel Talk
Recent developments in the computation of scattering amplitudes beyond one loop Friday, 7 July 2017 11:30 (13 minutes)
In this presentation, we review the general features of integrand-reduction techniques with a par- ticular focus on their generalization beyond one loop. We briefly summarize the ongoing efforts in the field, whose ultimate goal is the development of efficient alternative computational techniques for the evaluation of Feynman integrals beyond one loop. Finally, we describe some recent appli- cations of the GoSam 2.0 automated framework, originally designed for one-loop calculations, to processes beyond one loop. In particular, a customized version of GoSam have been recently em- ployed to study the production of a top-antitop pair in association with a vector boson or with the Higgs boson at next-to-next-to-leading logarithmic accuracy. In the context of these calculations, the modified version of GoSam was used to evaluate the NLO hard functions which are neededto carry out the resummation of soft gluon emission effects.
Experimental Collaboration
Primary author: OSSOLA, Giovanni (City University of New York (US)) Presenter: OSSOLA, Giovanni (City University of New York (US)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 123 EPS-HEP 2017 / Report of Contributions An introduction to the Higgs mech …
Contribution ID: 164 Type: Parallel Talk
An introduction to the Higgs mechanism based on classical physics secondary school curriculum Saturday, 8 July 2017 10:30 (15 minutes)
The Higgs mechanism is introduced in a completely classical framework in which the conceptof energy is reviewed. After a brief review of the classical energy of a particle in a gravitational or electromagnetic fields, we show that postulating the existence of a new field (the Higgs field)one can easily introduce a new term in the energy that is consistent with the relativistic energy at rest of a particle, making the mass of a particle the result of a dynamic effect of the interaction with a scalar field. Our model also gives rise to interaction terms between particles and the new field,as well as to the mass of such a field (i.e. to the Higgs boson).
Our approach allows a formal introduction of the Higgs field dynamics, much similar to other topics of classical textbooks, that does not require any knowledge of quantum field theory.
Experimental Collaboration CMS
Primary author: ORGANTINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)) Presenter: ORGANTINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 124 EPS-HEP 2017 / Report of Contributions Towards a demystification of quan …
Contribution ID: 165 Type: Poster Presentation
Towards a demystification of quantum mechanics
Quantum Mechanics is being included in numerous school programmes as part of the curriculum. Most modern textbooks introduce it emphasising its strange or at least uncommon, somewhat para- doxical character. We argue that such an approach is wrong because rather than attracting the interest of students toward the topic, it makes it almost unbelievable and artificial. The resulting perception is that quantum mechanics is in fact not understood at all and that we need a new theory that eventually will supersede it. In contrast, we propose a new approach on classical physics that, stressing the role of the measure- ments in physics, introduces the concept of state very early in the curriculum. Such a concept is reviewed on each classical physics topic and the concept of force as a vector is almost abandoned for the concept of interaction defined as something that change the state.
In this way it is possible to introduce quantum mechanics without violating any conviction the students acquired learning classical physics. In other words quantum mechanics appears to be as natural as classical physics, at least from the point of view of the results of the experiments.
Experimental Collaboration CMS
Primary author: ORGANTINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)) Presenter: ORGANTINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 125 EPS-HEP 2017 / Report of Contributions Search for neutrinoless double- …
Contribution ID: 166 Type: Parallel Talk
Search for neutrinoless double-beta decay with the SuperNEMO demonstrator Friday, 7 July 2017 17:15 (15 minutes)
Neutrinoless double-beta decay can provide evidence of lepton number violating processes and its observation can give information on the nature and the absolute mass scale of neutrinos. The Su- perNEMO demonstrator searches for such decay through a tracking calorimeter technique which allows to disentangle different mechanisms for neutrinoless double beta decay with powerful back- ground rejection capability. In this talk I will review the status of the experiment, being currently in its commissioning phase, and discuss its future perspectives.
Experimental Collaboration SuperNEMO collaboration
Primary author: Dr MACOLINO, Carla (LAL Orsay France) Presenter: Dr MACOLINO, Carla (LAL Orsay France) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 126 EPS-HEP 2017 / Report of Contributions EW boson production at LHCb
Contribution ID: 168 Type: Parallel Talk
EW boson production at LHCb Thursday, 6 July 2017 18:00 (15 minutes)
LHCb, while purpose built for b-physics, also functions as a general purpose forward detector, covering the pseudo-rapidity range 2.0 to 5.0. We present the latest measurements of W and Z boson production. These benchmark measurements are used to constrain the parton distribution functions that describe the inner structure of the proton, and to test the modelling of Standard Model processes. These measurements can also be used to validate reconstruction techniques.
Experimental Collaboration LHCb
Presenter: SESTINI, Lorenzo (Universita e INFN, Padova (IT)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 127 EPS-HEP 2017 / Report of Contributions Top physics measurements at LHCb
Contribution ID: 169 Type: Parallel Talk
Top physics measurements at LHCb Friday, 7 July 2017 11:30 (15 minutes)
LHCb, while purpose built for b-physics, also functions as a general purpose forward detector, covering the pseudo-rapidity range 2.0 to 5.0. LHCb has measured forward top production using final states accessible from both single top and top pair production processes. Measurements inthe LHCb acceptance have particular sensitivity to high and low values of Bjorken-x when compared to other LHC measurements, and consequently offer complementary constraints on Bjorken-x. A selection of LHCb results in this area will be presented.
Experimental Collaboration LHCb
Presenter: FARRY, Stephen (University of Liverpool (GB)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 128 EPS-HEP 2017 / Report of Contributions The CMS HGCAL detector for HL-…
Contribution ID: 171 Type: Parallel Talk
The CMS HGCAL detector for HL-LHC upgrade Friday, 7 July 2017 09:00 (17 minutes)
The High Luminosity LHC (HL-LHC) will integrate 10 times more luminosity than the LHC,posing significant challenges for radiation tolerance and event pileup on detectors, especially for forward calorimetry, and hallmarks the issue for future colliders. As part of its HL-LHC upgrade program, the CMS collaboration is designing a High Granularity Calorimeter to replace the existing endcap calorimeters. It features unprecedented transverse and longitudinal segmentation for both electro- magnetic (ECAL) and hadronic (HCAL) compartments. This will facilitate particle-flow calorime- try, where the fine structure of showers can be measured and used to enhance pileup rejection and particle identification, whilst still achieving good energy resolution. The ECAL and alarge fraction of HCAL will be based on hexagonal silicon sensors of 0.5 - 1 cm^2 cell size, with the remainder of the HCAL based on highly-segmented scintillators with SiPM readout. The intrin- sic high-precision timing capabilities of the silicon sensors will add an extra dimension to event reconstruction, especially in terms of pileup rejection. An overview of the HGCAL project is pre- sented, covering motivation, engineering design, readout and trigger concepts, and performance (simulated and from beam tests).
Experimental Collaboration CMS
Primary author: STEEN, Arnaud (National Taiwan University (TW)) Presenter: STEEN, Arnaud (National Taiwan University (TW)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 129 EPS-HEP 2017 / Report of Contributions Challenges of front-end and trigge …
Contribution ID: 172 Type: Parallel Talk
Challenges of front-end and triggering electronics for High Granularity Calorimetry Thursday, 6 July 2017 17:45 (15 minutes)
A High Granularity Calorimeter (HGCAL) is presently being designed by the CMS collaboration to replace the existing end cap detectors. The HGCAL must be able to cope with the very highcol- lision rates, imposing the development of novel filtering and triggering strategies, as well aswith the harsh radiation environment of the High Luminosity LHC. In this talk we present an overview of the full electronics architecture and the performance of prototype components and algorithms. The requirements for the front-end electronics are extremely challenging, including high dynamic range (0-10 pC), low noise (~2000e-) and low power consumption (~10mW/channel), as well as the need to select and transmit trigger information with high granularity. Exploiting the intrin- sic precision-timing capabilities of silicon sensors also requires careful design of the front-end electronics and the clock distribution. A new generation of highly performant ”SKIROC” Front- End chips in 130 nm CMOS technology, including both ADC and TDC blocks and a Time-over- threshold architecture, is being developed to meet the requirements of the HGCAL. The HGCAL incorporates around six million readout channels and so presents a significant challenge in terms of data manipulation and processing for the trigger; the trigger data volumes will be an order of magnitude above those currently handled by CMS. In addition, the high luminosity will result in an average of 140 interactions per bunch crossing that give a huge background rate in the forward region, and these will need to be efficiently rejected by the trigger algorithms. Furthermore, re- construction of the particle clusters to be used for particle flow in events with high occupancy is a complex computational problem for the trigger. The status of the front-end and trigger architec- tures and designs, as well as the concepts for the algorithms needed in order to tackle these major issues, will be presented.
Experimental Collaboration CMS
Primary author: PULJAK, Ivica (Technical University of Split FESB) Presenters: PULJAK, Ivica (Technical University of Split FESB); PULJAK, Ivica (University of Split. Fac.of Elect. Eng., Mech. Eng. and Nav.Arc) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 130 EPS-HEP 2017 / Report of Contributions Electroweak and QCD aspects in V …
Contribution ID: 174 Type: Parallel Talk
Electroweak and QCD aspects in V+jets with CMS Thursday, 6 July 2017 15:30 (15 minutes)
The study of the associated production of vector bosons and jets constitutes an excellent test- bench to check numerous QCD predictions. Total and differential cross sections of vector bosons produced in association with jets has been studied at both 8 and 13 TeV center-of-mass energies. Differential distributions as function of a broad range of kinematical observables are measured and compared with theoretical predictions. Final states with a vector boson and jets can be also used to study electroweak initiated processes, such as the vector boson fusion production of a Z boson accompanied by a pair of energetic jets having large invariant mass.
Experimental Collaboration CMS
Presenter: CHERNYAVSKAYA, Nadezda (Eidgenoessische Tech. Hochschule Zuerich (CH)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 131 EPS-HEP 2017 / Report of Contributions V+heavy flavor jets and constraint …
Contribution ID: 175 Type: Parallel Talk
V+heavy flavor jets and constraints to PDFs with CMS Thursday, 6 July 2017 15:45 (15 minutes)
The associated production of vector bosons, W or Z, and jets originating from heavy-flavour quarks is a large background source in measurements of several standard model processes, Higgs boson studies, and many searches for physics beyond the SM. The study of events with one or two well- identified and isolated leptons accompanied by heavy-flavour jets is crucial to refine the theoretical calculations in perturbative QCD, as well as to validate associated Monte Carlo techniques. Using the LHC proton-proton collision data at centre-of-mass energies of 7 and 8 TeV collected by the CMS detector, Wbb, Zb(b), W+c, and Z+c cross sections are measured. Fiducial differential cross sections are measured as a function of several kinematic observables. The study of the associ- ated production of a vector boson with jets from a c-quark is specially interesting to improve the treatment of heavy quarks in PDF-related studies. The production of a W boson associated with a c-quark allows probing and constraining the strange quark content of the proton. The associated production of a Z boson and c-quark jets may give insight into the existence of an intrinsic charm quark component inside the proton.
Experimental Collaboration CMS
Presenter: PFLITSCH, Svenja Karen (Deutsches Elektronen-Synchrotron (DE)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 132 EPS-HEP 2017 / Report of Contributions Multiboson production VV(V) wit …
Contribution ID: 176 Type: Parallel Talk
Multiboson production VV(V) with the CMS detector Friday, 7 July 2017 09:00 (15 minutes)
We present the most recent inclusive and differential measurements of multiboson production (VV, VVV) with data collected by the CMS during Run I & II.
Experimental Collaboration CMS
Presenter: WOODS, Nate (University of Wisconsin-Madison (US)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 133 EPS-HEP 2017 / Report of Contributions VV+jets (VBS) with the CMS detector
Contribution ID: 177 Type: Parallel Talk
VV+jets (VBS) with the CMS detector Friday, 7 July 2017 09:45 (15 minutes)
The production of massive vector boson pairs is a key process for the understanding ofthenon- abelian gauge structure of the standard model and for the comprehension of the electroweak sym- metry breaking mechanism. The study of the production of vector boson pairs with the presence of two jets in the event allows to measure the electroweak production of vector bosons in asso- ciation with jets, in particular made up through vector boson scattering (VBS) processes. In this presentation, we will report the recent results of the production of diboson in association with two jets at \sqrt{s} = 8 and 13 TeV.
Experimental Collaboration CMS
Presenter: BELLAN, Riccardo (Universita e INFN Torino (IT)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 134 EPS-HEP 2017 / Report of Contributions Electroweak precision measureme …
Contribution ID: 178 Type: Parallel Talk
Electroweak precision measurements with the CMS detector Thursday, 6 July 2017 10:30 (15 minutes)
We report on the status of the precision measurements of electroweak parameters with W and Z bosons with the CMS detector. The effective electroweak mixing angle sin^{2}_{\theta} is extracted by measuring the forward-backward asymmetry in dilepton events near the Z boson mass region. Experimental and theoretical challenges needed for a high-precision W boson mass measurement are reported using a sample of Z->mumu events.
Experimental Collaboration CMS
Presenter: BODEK, Arie (University of Rochester (US)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 135 EPS-HEP 2017 / Report of Contributions Inclusive and differential W and Z…
Contribution ID: 179 Type: Parallel Talk
Inclusive and differential W and Z boson cross sections with the CMS detector Thursday, 6 July 2017 09:00 (15 minutes)
Measurements of single W and Z boson inclusive and differential production cross sections and their ratios with the CMS detector are presented. The results are compared to predictions from different Monte Carlo generators. A comparison of the results to predictions using different pardon distribution functions (PDF) tests the performance of PDFs.
Experimental Collaboration CMS
Presenter: MAZUMDAR, Kajari (Tata Inst. of Fundamental Research (IN)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 136 EPS-HEP 2017 / Report of Contributions Cosmology of self-gravitating media
Contribution ID: 180 Type: Parallel Talk
Cosmology of self-gravitating media Friday, 7 July 2017 10:00 (15 minutes)
The low-energy dynamics of a generic self-gravitating media can be studied by using effective field theory in terms four derivatively coupled scalar fields. Imposing SO(3) internal spatial invariance, the theory describes fluids, superfluids, solid and supersolids. Dynamical and thermodynamical properties of the medium are dictated by internal symmetries of the effective theory. From the analysis of cosmological perturbations it emerges that in the scalar sector, besides the gravita- tional potential, a non-adiabatic mode corresponding to the perturbations of entropy per particle σ. Perfect fluids and solids are adiabatic with constant in time σ while for superfluids andsuper- solids σ has non-trivial dynamics. Tensor perturbations are massive for solid and supersolid. Such an effective approach can be used to give a very general modelling of the dark sector basedon symmetries.
Based on Phys.Rev. D94 (2016) 124023 (arXiv:1603.02956), Phys.Rev. D94 (2016) 025034 (arXiv:1605.05304) and a forthcoming additional paper.
Experimental Collaboration
Primary authors: PILO, Luigi (Dept. of Physical and Chemical Sciences, Univ. of L’Aquila and INFN, Laboratori Nazionali del Gran Sasso, Italy ); CELORIA, Marco (Gran Sasso Science Institute (INFN)); COMELLI, Denis (INFN, Sezione di Ferrara, ) Presenter: PILO, Luigi (Dept. of Physical and Chemical Sciences, Univ. of L’Aquila and INFN, Laboratori Nazionali del Gran Sasso, Italy ) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 137 EPS-HEP 2017 / Report of Contributions Charmonium production in pPb a …
Contribution ID: 183 Type: Parallel Talk
Charmonium production in pPb and PbPb collisions at 5.02 TeV with CMS Thursday, 6 July 2017 10:00 (15 minutes)
Charmonium states, such as the J/ψ and ψ(2S) mesons, are excellent probes of the deconfined state of matter, the Quark-Gluon Plasma (QGP). The understanding of charmonia production in PbPb collisions requires the inclusion of many phenomena, such as dissociation in the QGP and statistical recombination, on top of cold nuclear matter effects (modifications of nPDFs, initial- state energy loss, nuclear break-up). Measurements of charmonia production in pPb collisions are crucial in order to disentangle the QGP-related effects from cold nuclear matter effects. In ψ ψ this talk, final results√ on the relative J/ and (2S) modification, based on the pp and PbPb data collected at \mbox{ sNN} = 5.02 TeV by CMS in 2015, will be reported. In addition, new prompt and nonprompt J/ψ results in PbPb collisions at the same center-of-mass energy, including the nuclear modification factor RAA, will be presented over a wide kinematic and centrality range 3 < < 50 c |y| < 2.4 ( \ensuremath{p_{\mathrm T}} GeV/ , √ , and fine event-centrality intervals). The s = 2.76 results are compared to those obtained at \mbox{√ NN} TeV over a similar kinematic range. Also new prompt ψ(2S) RAA results at \mbox{ sNN} = 5.02 TeV will be presented. Final prompt and nonprompt J/ψ results in pPb collisions at 5.02 TeV will also be discussed, using the 2015 pp ψ data taken at the same energy. At last, final√ results will be reported regarding prompt (2S) meson production in pPb collisions at \mbox{ sNN} = 5.02 TeV, as a function of transverse momentum and rapidity and down to \ensuremath{p_{\mathrm T}} = 4 GeV/c.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: STAHL LEITON, Andre Govinda (Centre National de la Recherche Scientifique (FR))
Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 138 EPS-HEP 2017 / Report of Contributions Naturalness and Dark Matter in th …
Contribution ID: 184 Type: Parallel Talk
Naturalness and Dark Matter in the BLSSM Thursday, 6 July 2017 12:45 (15 minutes)
We study the naturalness properties of the B − L Supersymmetric Standard Model (BLSSM) and compare them to those of the Minimal Supersymmetric Standard Model (MSSM) at both low (i.e., Large Hadron Collider) energies and high (i.e., unification) scales. By adopting standard measures of naturalness, we assess that, in presence of full unification of the additional gauge couplings and scalar/fermionic masses of the BLSSM, such a scenario reveals a somewhat higher degree of Fine- Tuning (FT) than the MSSM, when the latter is computed at the unification scale and all available theoretical and experimental constraints, but the Dark Matter (DM) ones, are taken into account. Yet, such a difference, driven primarily by the collider limits requiring a high mass for thegauge boson associated to the breaking of the additional U(1)B−L gauge group of the BLSSM in addition to the SU(3)C × SU(2)L × U(1)Y of the MSSM, should be regarded as a modest price to pay for the former in relation to the latter, if one notices that the non-minimal scenario offers a significant volume of parameter space where numerous DM solutions of different compositions can be found to the relic density constraints, unlike the case of the minimal structure, wherein only one type of solution is accessible over an ever diminishing parameter space. In fact, this different level of tension within the two SUSY models in complying with current data is well revealed when the FT measure is recomputed in terms of the low energy spectra of the two models, over their allowed regions of parameter space now in presence of all DM bounds, as it is shown that the tendency is now opposite, the BLSSM appearing more natural than the MSSM.
Experimental Collaboration
Primary authors: Dr MARZO, Carlo (National Institute of Chemical Physics and Biophysics); Dr UN, Cem (Uludag University); DELLE ROSE, Luigi (Rutherford Appleton Lab and University of Southamp- ton); KHALIL, Shaaban (Center for Theoretical Physics); KING, Simon (University of Southampton); MORETTI, Stefano (STFC - Rutherford Appleton Lab. (GB))
Presenter: KING, Simon (University of Southampton) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 139 EPS-HEP 2017 / Report of Contributions KM3NeT Experience: a virtual rea …
Contribution ID: 185 Type: Poster Presentation
KM3NeT Experience: a virtual reality adventure.
KM3NeT is the next generation neutrino telescope. Cherenkov light from neutrino-induced sec- ondary charged particles will be detected by an array of digital optical modules (DOM). A group of 18 DOMs, distributed in space along two thin ropes, constitutes the essential part of a 750 meters tall detection unit (DU). It is very hard to visualize in mind such a structure, despite many graphical representations were done in the past. However, being two-dimensional, they do not provide the real perception of a complete deployed DU. For this reason we decided to create a virtual reality experience with the aim to provide a better awareness of our detector. Such an experience isalso a formidable way to promote astroparticle physics to young students. KM3NeT Experience is a virtual reality adventure developed using Unreal Engine 4. It is an im- mersive experience built to be played using virtual reality head mounted displays (HMDs) such as Oculus Rift, HTC vive, etc. The player will experience the descent in the abyss in firstperson seeing realistic marine creatures and being able to take a look to a KM3NeT detector unit at 3500 meters under the sea level.
Experimental Collaboration KM3NeT
Primary author: MOLLO, Carlos Maximiliano (INFN) Presenter: MOLLO, Carlos Maximiliano (INFN) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 140 EPS-HEP 2017 / Report of Contributions Studies of a scheme for low emitta …
Contribution ID: 186 Type: Parallel Talk
Studies of a scheme for low emittance muon beam production from positrons on target Saturday, 8 July 2017 12:50 (10 minutes)
A new scheme to produce muon beams characterized by very low emittance, in such a way to avoid the need for cooling, using a positron beam of about 45 GeV interacting on electrons on target is being studied by our group. This scheme is challenging and innovative, and needs a full design study to be developed. In particular, one of the novel topics to be investigated is the interaction between the positron beam stored in a low emittance ring with a thin target, to be inserted directly in the ring chamber to produce muons. Produced muons will then be immediately collected at the exit of the target and transported to two + and - accumulator rings. In this work, we discuss the simulation of the e+ beam interacting with the target, its degradation in the 6-D phase space and the optimization of the e+ ring design mainly to maximize the energy acceptance. To this aim, two different approaches has been fol- lowed using different codes, in order to compare their results regarding the performances ofthis scheme.
Experimental Collaboration
Primary authors: COLLAMATI, Francesco; BOSCOLO, Manuela (Istituto Nazionale Fisica Nucle- are Frascati (IT)); ANTONELLI, Mario (INFN e Laboratori Nazionali di Frascati (IT)); BIAGINI, Maria Enrica; GUIDUCCI, Susanna (INFN-LNF); BLANCO GARCIA, Oscar Roberto (Instituto de Fisica Cor- puscular (ES)); LIUZZO, Simone Maria (ESRF); DI NARDO, Roberto (CERN); Dr RAIMONDI, Pantaleo (ESRF)
Presenter: COLLAMATI, Francesco Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 141 EPS-HEP 2017 / Report of Contributions Latest results of the Pierre Auger O …
Contribution ID: 187 Type: Parallel Talk
Latest results of the Pierre Auger Observatory Thursday, 6 July 2017 12:24 (18 minutes)
The Pierre Auger Observatory, located in Argentina, has been detecting ultra-high energy cosmic rays for more than ten years. The combination of a large surface detector array and fluorescence telescopes provides a substantial improvement in energy calibration and extensive air shower mea- surements, resulting in data of unprecedented quality in the energy range from 0.1 EeV up to 100 EeV. A review of main results from the Pierre Auger Observatory is presented with a particular focus on the energy spectrum measurements , mass composition studies and the arrival directions analyses.
Experimental Collaboration Pierre Auger Collaboration
Primary author: Mrs LHENRY-YVON, Isabelle (IPN Orsay, CNRS IN2P3) Presenter: Mrs LHENRY-YVON, Isabelle (IPN Orsay, CNRS IN2P3) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 142 EPS-HEP 2017 / Report of Contributions The ANITA and HiCal experiment …
Contribution ID: 188 Type: Parallel Talk
The ANITA and HiCal experiments in Antarctica. Thursday, 6 July 2017 12:42 (13 minutes)
The balloon-borne ANITA experiment is designed to detect the radio-frequency Cherenkov ra- diation resulting from collisions of either ultra-high energy (UHE) neutrinos colliding with ice molecules, or cosmic rays interacting with air molecules in the atmosphere. Thus far, four flights over the last decade have yielded world’s-best sensitivity in the E>1 EeV regime. The HiCal ex- periment, consisting of a transmitter hung off a smaller balloon, was designed to provide anin-air calibration of ANITA, and has also allowed calibration of the Antarctic ice- surface. We discuss re- cent science results from ANITA and HiCal, which produced pinger signals observed at distances of almost 1000 km from ANITA, as well as complementary studies of radio frequency ice proper- ties, which have been derived from studies of data from similar neutrino-detection experiments (RICE, ARA, and ARIANNA) within the last several months, and how these most recent results impact estimates of cosmic ray (both charged and neutral) sensitivity.
Experimental Collaboration HiCal/ANITA/RICE
Primary author: PROHIRA, Steven (University of Kansas) Co-author: BESSON, DaveZ Presenter: PROHIRA, Steven (University of Kansas) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 143 EPS-HEP 2017 / Report of Contributions ALICE forward rapidity upgrades
Contribution ID: 189 Type: Parallel Talk
ALICE forward rapidity upgrades Thursday, 6 July 2017 15:15 (15 minutes)
The upcoming upgrade of the CERN LHC injectors during 2019-20 will boost the luminosityand the collision rate beyond the design parameters of several of the key ALICE detectors including the forward trigger detectors. The nominal Pb-Pb interaction and readout rate for ALICE afterLS2 will reach 50 kHz. To face this challenge the Fast Interaction Trigger (FIT) is being designed and constructed. FIT will be the main forward trigger, luminometer, and collision time detector. It will also determine multiplicity, centrality, and reaction plane of heavy ion collisions. The detector will consist of two arrays of Cherenkov radiators with MCP-PMT sensors andof a single scintillator ring. The arrays will surround the beam pipe on the opposite sides ofthe interaction point: at ~820 mm on the hadron absorber side and at ~3200 mm on the other side, where also the scintillator ring of a diameter of 1489 mm will be located. The resolution of the interaction time extracted from the Cherenkov arrays will be equal or better than 40 ps for low multiplicity events and better than 30 ps at higher multiplicities. The centrality and event plane resolution will be similar to those of the present ALICE apparatus. The first prototype of the Cherenkov module together with the frontend electronics are already installed and in operation at ALICE in parallel with the other forward detectors.
The presentation will contain a short introduction to FIT, followed by the latest refinements ofthe FIT geometry together with performance of the prototype, new modifications to the MCP-PMT sensor, electronics scheme with digital trigger and continuous readout, as well as the results of the FIT performance simulations.
Experimental Collaboration ALICE Collaboration
Primary authors: ALICE COLLABORATION; SLUPECKI, Maciej (University of Jyvaskyla (FI))
Presenter: SLUPECKI, Maciej (University of Jyvaskyla (FI)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 144 EPS-HEP 2017 / Report of Contributions Fully-differential predictions for to …
Contribution ID: 190 Type: Parallel Talk
Fully-differential predictions for top pair-production and decay at high precision Friday, 7 July 2017 12:15 (15 minutes)
We present state-of-the-art, high-precision predictions for top-quark pair production in the di- lepton channel at the LHC. Our results are based on the narrow-width approximation and include approximate NNLO correc- tions in the production subprocess, exact NNLO corrections in the decay sub-process as well as exact NLO-production/NLO-decay interferences. We will briefly outline the structure of this new calculation and discuss the importance ofthecor- rections beyond NLO. A comparison of these improved predictions to ATLAS and CMS fiducial-region measurements will also be shown.
Experimental Collaboration
Primary author: PAPANASTASIOU, Andrew (University of Cambridge) Presenter: PAPANASTASIOU, Andrew (University of Cambridge) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 145 EPS-HEP 2017 / Report of Contributions Latest oscillation results from the …
Contribution ID: 193 Type: Parallel Talk
Latest oscillation results from the NOvA experiment Thursday, 6 July 2017 09:45 (15 minutes)
The NuMI Off-axis νe Appearance (NOvA) experiment is a two-detector, long-baseline neutrino oscillation experiment which addresses some of the main open questions in the neutrino sector through precision measurements of neutrino and antineutrino oscillations. NOvA uses the up- graded NuMI neutrino beam at the Fermi National Accelerator Laboratory and a highly active, finely segmented 14-kton far detector at Ash River, Minnesota. This highly granular designpro- vides an outstanding event identification capacity, which allows for precision measurements ofthe oscillation parameters in both the appearance and disappearance of neutrinos and antineutrinos. | 2 | In particular, NOvA will produce leading constraints on θ13, θ23, ∆matm , the neutrino mass hi- erarchy and the CP-violation phase. In this talk, I will report on the latest oscillation results from NOvA, including muon neutrino disappearance, electron neutrino appearance as well as searches for sterile neutrinos using the neutral current spectrum.
Experimental Collaboration NOvA
Primary author: Dr ZAMORANO, Bruno (University of Sussex) Presenter: Dr ZAMORANO, Bruno (University of Sussex) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 146 EPS-HEP 2017 / Report of Contributions Medipix: Pixel Detectors for Medi …
Contribution ID: 194 Type: Plenary Talk
Medipix: Pixel Detectors for Medical Imaging and Other Applications Saturday, 8 July 2017 14:30 (30 minutes)
Presenter: CAMPBELL, Michael (CERN) Session Classification: ECFA-EPS Special Session: Particle Physics and Society Extending our Vision and Reach
October 6, 2021 Page 147 EPS-HEP 2017 / Report of Contributions Selected decays of heavy mesons i …
Contribution ID: 195 Type: Poster Presentation
Selected decays of heavy mesons in covariant confined quark model
Weak heavy mesons decays are candidate processes for new physics manifestation. Their theo- retical description requires an appropriate treatment of hadronic effects. Because of their non- perturbative nature, they are usually treated in some model-dependent way. Focusing on several weak heavy mesons decays, we will present the confined covariant quark model and demonstrate its features. Our results represent an important cross-check of consistency of existing theoretical evaluations with respect to hadronic effects.
Experimental Collaboration No
Primary authors: LIPTAJ, Andrej (Slovak Academy of Sciences (SK)); Prof. IVANOV, Mikhail (Joint Institute for Nuclear Research)
Co-authors: DUBNICKOVA, Anna Zuzana (Comenius University (SK)); DUBNICKA, Stanislav (Slo- vak Academy of Sciences (SK))
Presenter: LIPTAJ, Andrej (Slovak Academy of Sciences (SK)) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 148 EPS-HEP 2017 / Report of Contributions Progress in Application of Hadron …
Contribution ID: 196 Type: Plenary Talk
Progress in Application of Hadron Therapy Saturday, 8 July 2017 15:00 (30 minutes)
Presenter: SCHIPPERS, Jacobus Maarten Session Classification: ECFA-EPS Special Session: Particle Physics and Society Extending our Vision and Reach
October 6, 2021 Page 149 EPS-HEP 2017 / Report of Contributions The Challenges of Big Data
Contribution ID: 197 Type: not specified
The Challenges of Big Data Saturday, 8 July 2017 15:30 (30 minutes)
Presenter: BIRD, Ian (CERN) Session Classification: ECFA-EPS Special Session: Particle Physics and Society Extending our Vision and Reach
October 6, 2021 Page 150 EPS-HEP 2017 / Report of Contributions Parallel Processing in HEP
Contribution ID: 198 Type: Plenary Talk
Parallel Processing in HEP Saturday, 8 July 2017 16:00 (30 minutes)
Presenter: STEWART, Graeme (University of Glasgow (GB)) Session Classification: ECFA-EPS Special Session: Particle Physics and Society Extending our Vision and Reach
October 6, 2021 Page 151 EPS-HEP 2017 / Report of Contributions Progress in the Development and …
Contribution ID: 199 Type: Plenary Talk
Progress in the Development and Research with Light Sources
Presenter: SAYERS, Zehra (Sabanci University) Session Classification: ECFA-EPS Special Session: Particle Physics and Society Extending our Vision and Reach
October 6, 2021 Page 152 EPS-HEP 2017 / Report of Contributions Progress in Muon Tomography
Contribution ID: 200 Type: Plenary Talk
Progress in Muon Tomography Saturday, 8 July 2017 17:00 (30 minutes)
Presenter: BONOMI, Germano (Universita di Brescia (IT)) Session Classification: ECFA-EPS Special Session: Particle Physics and Society Extending our Vision and Reach
October 6, 2021 Page 153 EPS-HEP 2017 / Report of Contributions Impact of Particle Physics on Educ …
Contribution ID: 201 Type: Plenary Talk
Impact of Particle Physics on Education Saturday, 8 July 2017 17:30 (30 minutes)
Presenter: DI NEZZA, Pasquale (INFN e Laboratori Nazionali di Frascati (IT)) Session Classification: ECFA-EPS Special Session: Particle Physics and Society Extending our Vision and Reach
October 6, 2021 Page 154 EPS-HEP 2017 / Report of Contributions Theory overview of the tree-level …
Contribution ID: 202 Type: Parallel Talk
Theory overview of the tree-level b-decays Thursday, 6 July 2017 14:45 (30 minutes)
I review theoretical progress in the study of semileptonic tree-level B decays and its interplay with recent experimental results. In particular, I focus on two anomalies: the ratios R(D), R(D∗): (∗) (∗) BR(B−>D τν¯τ ) R(D ) = (∗) BR(B−>D ℓν¯ℓ) and the inclusive vs exclusive determination of |Vcb|. I review several explanations for such anomalies and discuss further tests to clarify their origin.
Experimental Collaboration
Primary author: DE FAZIO, Fulvia (INFN Bari) Presenters: DE FAZIO, Fulvia (INFN Bari); DE FAZIO, Fulvia (Universita e INFN, Bari (IT)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 155 EPS-HEP 2017 / Report of Contributions Lessons from CTF3
Contribution ID: 203 Type: Parallel Talk
Lessons from CTF3 Saturday, 8 July 2017 10:15 (25 minutes)
The CLIC Test Facility (CTF3) was built to demonstrate the feasibility of the CLIC twobeamac- celeration scheme. The main issues to be verified were the high current drive beam generation using a fully loaded highly efficient linac and a beam combination scheme, based on transverse RF deflectors, to increase beam current and bunch repetition frequency. The drive beam has been used for GW level RF power production and two beam acceleration ex- periments. CTF3 was also a test ground for development of many accelerator technologies. Its operation was concluded in 2016 and in this contribution the results relevant for the CLIC design as well as for the whole accelerator physics community will be presented.
Experimental Collaboration CTF3 Collaboration
Primary authors: SKOWRONSKI, Piotr Krzysztof (CERN); CORSINI, Roberto (CERN) Presenter: SKOWRONSKI, Piotr Krzysztof (CERN) Session Classification: Accelerators for HEP
Track Classification: Accelerators for HEP
October 6, 2021 Page 156 EPS-HEP 2017 / Report of Contributions Large scale separation and hadron …
Contribution ID: 204 Type: Parallel Talk
Large scale separation and hadronic resonances from a new strongly interacting sector Saturday, 8 July 2017 10:45 (15 minutes)
Many theories describing physics beyond the Standard Model rely on a large separation of scales. Large scale separation arises in models with mass-split flavors if the system is conformal inthe ultraviolet but chirally broken in the infrared. Because of the conformal fixed point, these systems exhibit hyperscaling and a highly constrained resonance spectrum. We derive hyperscaling rela- tions and investigate the realization of one such system with four light and eight heavy flavors. Our numerical simulations confirm that both light-light and heavy-heavy resonance masses show hyperscaling and depend only on the ratio of the light and heavy flavor masses. The heavy-heavy spectrum is qualitatively different from QCD and exhibits quarkonia with masses not proportional to the constituent quark mass. These resonances are only a few times heavier than the light-light ones, which would put them within reach of the LHC.
Experimental Collaboration
Primary author: WITZEL, Oliver (University of Edinburgh) Co-authors: Prof. HASENFRATZ, Anna (University of Colorado, Boulder); Prof. REBBI, Claudio (Boston University)
Presenter: WITZEL, Oliver (University of Edinburgh) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 157 EPS-HEP 2017 / Report of Contributions Saving the Higgs Portal for Singlet …
Contribution ID: 205 Type: Parallel Talk
Saving the Higgs Portal for Singlet Scalar Dark Matter. Thursday, 6 July 2017 12:30 (15 minutes)
The Higgs-portal model with a singlet scalar Dark Matter particle is one of the simplest exten- sions to the Standard Model that can reproduce the relic density. But unfortunately this model is strongly constrained by direct and indirect DM detection, as well as by collider physics. Most of the parameter space is already ruled-out and the rest will be explored in the next future. We show that a simple extension of the DM sector with a second scalar singlet enables a substantial opening of the allowed window in the parameter space.
Experimental Collaboration
Primary author: QUILIS, Javier (IFT) Co-authors: CASAS, alberto (Spanish Research Council (CSIC)); CERDENO, David G. (University of Durham); MORENO, Jesus M. (CSIC) Presenter: QUILIS, Javier (IFT) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 158 EPS-HEP 2017 / Report of Contributions Precision Measurement of 3He-to- …
Contribution ID: 208 Type: Parallel Talk
Precision Measurement of 3He-to-4He ratio in Cosmic Rays with the AMS Detector on the Space Station Thursday, 6 July 2017 12:06 (18 minutes)
The knowledge of the energy dependence ofthe 3He-to-4He flux ratio (3He/4He) is one of the most important sources for studying and testing cosmic ray propagation models. Similar to the B/C measurement, where B is assumed to originate from interactions of primary Carbon and Oxygen in Cosmic Rays, in the 3He/4He measurement 3He is assumed to be produced by interactions of 4He and heavier nuclei with the interstellar matter. The 3He/4He ratio is a powerful tool for determining the amount of interstellar material traversed by cosmic rays and, and since 4He has smaller cross section compared to C and O, this provides testing of the propagation models over larger travelled distances.
The AMS results are unique and distinct from all the previous data and they are presented here for the first time. The AMS 3He/4He flux ratio is based on 9 million 3He events and 56 million 4He events and it extends from 0.7 GeV/n to 10 GeV/n in a region where previous measurements have large errors and are not consistent with each other. This prevents accurate comparison with models. We will present comparison of our results with theoretical models.
Experimental Collaboration AMS collaboration
Primary author: Prof. ZUCCON, Paolo (Massachusetts Inst. of Technology (US)) Co-author: Dr GIOVACCHINI, Francesca (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Presenter: Prof. ZUCCON, Paolo (Massachusetts Inst. of Technology (US)) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 159 EPS-HEP 2017 / Report of Contributions Precision Measurement of the posi …
Contribution ID: 210 Type: Parallel Talk
Precision Measurement of the positron fraction in Primary Cosmic Rays with AMS on the Space Station Saturday, 8 July 2017 09:00 (15 minutes)
Measurements of the individual electron and positron fluxes and of the positron fraction have different systematic errors. The flux measurements depend on the acceptance while thefraction measurement depends more on statistics. The latest AMS results on the precision measurement of the positron fraction in primary cosmic rays in the energy range from 0.5 to 700 GeV based on ~20 million positron and electron events are presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show that at ∼260 GeV the positron fraction reaches its maximum. Comparison of the measured positron fraction with the Dark Matter and other models will be presented.
Experimental Collaboration AMS-02 Collaboration
Primary author: VAGELLI, Valerio (Universita e INFN, Perugia (IT)) Co-author: BASEGMEZ DU PREE, Suzan (Institute of High Energy Physics (CN)) Presenter: VAGELLI, Valerio (Universita e INFN, Perugia (IT)) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 160 EPS-HEP 2017 / Report of Contributions The CMS trigger in Run2
Contribution ID: 211 Type: Parallel Talk
The CMS trigger in Run 2 Thursday, 6 July 2017 09:00 (15 minutes)
During its second run of operation (Run 2) which started in 2015, the LHC will deliver a peak in- stantaneous luminosity that may reach 2 · 1034cm−2s−1 with an average pile-up of about 55, far larger than the design value. Under these conditions, the online event selection is a very challeng- ing task. In CMS, it is realized by a two-level trigger system: the Level-1 (L1) Trigger, implemented in custom-designed electronics, and the High Level Trigger (HLT), a streamlined version of the of- fline reconstruction software running on a computer farm. In order to face this challenge, the L1 trigger has been through a major upgrade compared to Run 1, whereby all electronic boards of the system have been replaced, allowing more sophisticated algorithms to be run online. Its last stage, the global trigger, is now able to perform complex se- lections and to compute high-level quantities, like invariant masses. Likewise, the algorithms that run in the HLT go through big improvements; in particular, new approaches for the online track reconstruction lead to a drastic reduction of the computing time, and to much improved perfor- mances. This presentation will describe the performance of the upgraded trigger system inRun2.
Experimental Collaboration CMS
Primary author: TOSI, Mia (CERN) Presenter: TOSI, Mia (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 161 EPS-HEP 2017 / Report of Contributions Dark Matter signal from e+ / e- / p-…
Contribution ID: 213 Type: Parallel Talk
Dark Matter signal from e+ / e- / p- with the AMS Detector on the International Space Station Friday, 7 July 2017 09:45 (15 minutes)
The excess of the antiproton flux and the antiproton-to-proton flux ratio beyond the predictionof the collision of ordinary cosmic rays is a unique signal from the Dark Matter model of neutralino annihilation. This excess can not come from pulsars. We present precision measurements byAMS of the antiproton flux and the antiproton-to-proton flux ratio in the absolute rigidity rangefrom 1 to 450 GV based on 3.49 x 105 antiproton events and 2.42 x 109 proton events. Comparison of our results with neutralino annihilation model shows good agreement. Comparison with other astrophysics models will also be presented.
We also present the latest results on 20 million electron and positron events measured by the Alpha Magnetic Spectrometer on the International Space Station. The measurement covers the energy range up to 1000 GeV. The measured positron flux and the positron fraction are in agreement with the Dark Matter Model with a neutralino mass of ~1 TeV. Comparison of the measurement with other astrophysics models will also be presented. In addition the precision measurement of the combined electron and positron flux exhibit no structures and positron arrival directions are consistent with isotropy, in agreement with the Dark Matter models.
Experimental Collaboration AMS
Primary author: ZIMMERMANN, Nikolas (Rheinisch-Westfaelische Tech. Hoch. (DE)) Presenter: ZIMMERMANN, Nikolas (Rheinisch-Westfaelische Tech. Hoch. (DE)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 162 EPS-HEP 2017 / Report of Contributions Antiproton Flux and Antiproton- …
Contribution ID: 214 Type: Poster Presentation
Antiproton Flux and Antiproton-to-Proton Flux Ratio in Primary Cosmic Rays Measured with AMS on the Space Station
Precision measurements by AMS of the antiproton flux and the antiproton-to-proton flux ratio in primary cosmic rays in the absolute rigidity range from 1 to 450 GV are presented based on 3.49× 105 antiproton events and 2.42×109 proton events. At ~20 GV the antiproton-to-proton flux ratio reaches a maximum. Unexpectedly, above 60 GV the antiproton spectral index is consistent with the proton spectral index and the antiproton-to-proton flux ratio shows no rigidity dependence in the rigidity range from ~60 to ~500 GV. This unexpected observation requires new explanation of the origin of cosmic ray antiprotons.
Experimental Collaboration AMS
Primary author: BACHLECHNER, Andreas (Rheinisch-Westfaelische Tech. Hoch. (DE)) Presenter: BACHLECHNER, Andreas (Rheinisch-Westfaelische Tech. Hoch. (DE)) Session Classification: Poster session
Track Classification: Astroparticle Physics
October 6, 2021 Page 163 EPS-HEP 2017 / Report of Contributions Quarkonium measurements in pPb …
Contribution ID: 215 Type: Parallel Talk
Quarkonium measurements in pPb and PbPb collisions at LHCb Thursday, 6 July 2017 10:15 (15 minutes)
The LHCb experiment has the unique property to study heavy-ion interactions in the forward region (2 < η < 5), in a kinematic region complementary to the general purpose detectors. The detector has excellent capabilities for reconstructing quarkonia down to zero pT. Notably, it can separate the prompt and displaced components. In pPb collisions, both forward and backward rapidities are covered thanks to the possibility of beam reversal. Results include measurements of the nuclear modification factors and forward-backward ratios for charmonium states. These quantities are sensitive probes to study cold nuclear matter effects on quarkonium production. In 2015, LHCb also participated successfully for the first time in the Pb-Pb data-taking. The status of the forward prompt J/ψ nuclear modification factor measurement for up to semi-central lead-lead collisions will be shown.
Experimental Collaboration LHCb
Primary author: GERSABECK, Marco (University of Manchester (GB)) Presenter: BOSSU, Francesco (Universite de Paris-Sud 11 (FR)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 164 EPS-HEP 2017 / Report of Contributions Open heavy flavour measurements …
Contribution ID: 216 Type: Parallel Talk
Open heavy flavour measurements in pPb collisions at LHCb Thursday, 6 July 2017 10:45 (15 minutes)
Open heavy flavour hadron production is studied in pPb collisions at sqrt{s_{NN}}= 5and8TeV with the LHCb experiment. The detector has excellent capabilities for particle identification and for the reconstruction of charm and beauty hadrons down to zero pT. Both forward and backward rapidities are covered thanks to the possibility of beam reversal. Results include measurements of the nuclear modification factors and forward-backward ratios for open heavy flavour hadrons. These measurements can provide important constraints to models for heavy quark production in heavy-ion collisions as well as the baseline for understanding quarkonium productions.
Experimental Collaboration LHCb
Primary author: GERSABECK, Marco (University of Manchester (GB)) Presenter: ROBBE, Patrick (Universite de Paris-Sud 11 (FR)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 165 EPS-HEP 2017 / Report of Contributions Physics with fixed target collisions …
Contribution ID: 217 Type: Parallel Talk
Physics with fixed target collisions in LHCb Thursday, 6 July 2017 12:00 (15 minutes)
The LHCb experiment, thanks to its System for Measuring Overlap with Gas (SMOG), hasthe unique capability to operate in a fixed target mode with the LHC beams. Reactions of incident LHC proton beams on noble gas targets have been recorded by the LHCb experiment at a center-of-mass energy of 110 GeV and within the center-of-mass rapidity range -2.3 < y* < 0.2. Results on anti-proton production as well as open and hidden heavy flavour hadrons production will be presented. These measurements can provide crucial constrain on particle pro- duction models of key interest for cosmic ray physics as well as for cold nuclear matter effects.
Experimental Collaboration LHCb
Primary author: GERSABECK, Marco (University of Manchester (GB)) Presenter: ANDERLINI, Lucio (Universita e INFN, Firenze (IT)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 166 EPS-HEP 2017 / Report of Contributions HEP outreach in Australia - in and …
Contribution ID: 218 Type: Poster Presentation
HEP outreach in Australia - in and out of the classroom
Australia has a rapidly growing high energy physics community members of which contribute broadly to outreach within the country and internationally. This talk will cover activities such as the Masterclass initiative which is being trialled by the government of New South Wales. With ongoing support from researchers who “meet” with the students via teleconference we are testing providing the masterclass experience to students in high schools over the course of a semester. Other national outreach initiatives at festivals (such as preparations for WOMAdelaide 2017), in exhibitions (’Hadron Collider’ in Brisbane and ‘Supersymmetry’ in Hobart) and in competitions (such as ‘Collision’) will be covered.
Experimental Collaboration
Primary author: JACKSON, Paul Douglas (University of Adelaide) Presenter: JACKSON, Paul Douglas (University of Adelaide) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 167 EPS-HEP 2017 / Report of Contributions Prospects for the study of heavy- …
Contribution ID: 219 Type: Parallel Talk
Prospects for the study of heavy-ion collisions at the NICA collider at JINR Friday, 7 July 2017 18:15 (15 minutes)
The main scientific goal of the NICA heavy-ion physics program at JINR will be an experimental investigation of the properties of nuclear matter under extreme conditions. A comprehensive scan of the QCD phase diagram in the region of maximum baryon density will be performed at NICA with ion beam species ranging from protons to gold nuclei. Systematic measurements of the production of leptons, hadrons, and light (hyper)nuclei will be conducted covering a wide range of the event phase-space with the MPD and BM@N experiments in the collider and fixed-target mode, respectively. In my talk, an overview of the current status of the NICA project realization will be given. I’ll discuss the main physics cases at NICA and briefly describe the elements of the detectors. A theoretical motivation will be accompanied by results of realistic Monte-Carlo simulation of the proposed experimental setups
Experimental Collaboration
Primary author: Dr KOLESNIKOV, Vadim (Joint Institute for Nuclear Research (RU)) Presenter: Dr KOLESNIKOV, Vadim (Joint Institute for Nuclear Research (RU)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 168 EPS-HEP 2017 / Report of Contributions MultiPurpose Detector (MPD) at t …
Contribution ID: 220 Type: Poster Presentation
MultiPurpose Detector (MPD) at the Collider NICA: design and main parameters
The major goals of the NICA/MPD Project is the study of the in-medium properties ofhadrons and the nuclear matter equation of state, including a search for possible signals of decofinement and/or chiral symmetry restoration phase transitions and the QCD critical endpoint in the region of the collider energy √sNN = 4 - 11 GeV. The basic strategy is to measure a large variety of signals systematically changing collision parameters (energy, centrality and system size). Reference data (i.e. pp and pA collisions) will be taken in the same experimental conditions. A tentative list of experimental observables includes: total particle yields and ratios, event-by-event fluctuations and correlations, collective flow of identified hadron species, strangeness production, femtoscopy, and electromagnetic probes (electrons and gammas). The hadrons containing heavy strange quarks and anti-baryons are of particular interest. The detector will comprise a precise 3-D tracking system based on TPC and a particle identifica- tion (PID) system based on the time-of-flight measurements and shashlyk type Electromagnetic Calorimeter. The energy of the projectile spectator nucleons will be measured by the Forward Hadron Calorime- ter (FHCal) which is located at distances of 2.9 m from the center of the interaction region. The Fast Forward Detectors (FFD) will provide the TOF with the start signal. FFD consists of two identical arrays of granulated Cherenkov counters situated symmetrically around the interaction point. At the design luminosity, the event rate in the MPD interaction region is about 6 kHz; the total charged particle multiplicity exceeds 1000 in the most central Au+Au collisions at √sNN = 11 GeV. As the average transverse momentum of the particles produced in a collision at NICA energies is below 500 MeV/c, the detector design requires a very low material budget. The first stage of the MPD includes TPC, TOF, ECal, FFD and FHCal will start operation in2020.
Experimental Collaboration MPD/NICA Collaboration
Primary author: GOLOVATYUK, Viacheslav (Joint Institute for Nuclear Research (RU)) Presenter: GOLOVATYUK, Viacheslav (Joint Institute for Nuclear Research (RU)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 169 EPS-HEP 2017 / Report of Contributions Outreach initiatives in Colombia i …
Contribution ID: 222 Type: Parallel Talk
Outreach initiatives in Colombia in the LHC era Saturday, 8 July 2017 09:00 (15 minutes)
The High Energy physics community in Colombia and in Latin America in general issteadily growing with stronger Physics programs and a larger participation in worldwide international collaborations and experiments. Along with these developments, great effort is being put into ed- ucation and outreach activities that inspire the public and motivate the next generation of students to pursue a career in science. The ATLAS Latin American masterclasses have been running for two years now, and Physics without Frontiers projects in Colombia and Venezuela are paving the way for more outreach initiatives in the region. All these activities are gathering more momentum every year, boosting the development of physics programs in the region.
Experimental Collaboration ATLAS
Primary author: SANDOVAL USME, Carlos (Universidad Antonio Narino (CO)) Presenter: SANDOVAL USME, Carlos (Universidad Antonio Narino (CO)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 170 EPS-HEP 2017 / Report of Contributions Dark Matter searches with the AT …
Contribution ID: 223 Type: Parallel Talk
Dark Matter searches with the ATLAS Detector Thursday, 6 July 2017 15:15 (15 minutes)
The presence of a non-baryonic dark matter component in the Universe is inferred fromtheob- servation of its gravitational interaction. If dark matter interacts weakly with the Standard Model it would be produced at the LHC, escaping the detector and leaving a large missing transverse momentum as their signature. The ATLAS detector has developed a broad and systematic search program for dark matter production in LHC collisions. The results of these searches on thefirst 13 TeV data, their interpretation, and the design and possible evolution of the search program will be presented.
Experimental Collaboration ATLAS
Presenter: Dr IPPOLITO, Valerio (Harvard University (US)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 171 EPS-HEP 2017 / Report of Contributions Search for New Phenomena in Dij …
Contribution ID: 226 Type: Parallel Talk
Search for New Phenomena in Dijet Events with the ATLAS Detector at √s = 13 TeV Friday, 7 July 2017 09:15 (15 minutes)
During the last two years the LHC produced pp collisions at the record center-of-mass energy of 13 TeV. The sensitivity of searches for new phenomena with a high mass scale greatly benefited from the energy increase with respect to the LHC run-1 data. Events with two hadronic jets in the final state are of particular interest: new phenomena produced in parton collisions arelikely to produce final states with (at least) two partons. In this talk several searches performed bythe ATLAS collaboration are presented. The very high mass and the low mass regions have both been investigated, by exploiting dedicated signatures and, in case of the latter, new techniques to overcome trigger limitations. Results and perspectives for these searches will be presented.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: PICAZIO, Attilio (University of Massachusetts) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 172 EPS-HEP 2017 / Report of Contributions Search for heavy resonances decay …
Contribution ID: 227 Type: Parallel Talk
Search for heavy resonances decaying to top quarks Saturday, 8 July 2017 12:00 (15 minutes)
Searches for new resonances that decay either to pairs of top quarks or a top and a b-quark will be presented. The searches are performed with the ATLAS experiment at the LHC using proton- proton collision data collected in 2015 and 2016 with a centre-of-mass energy of 13 TeV. The in- variant mass spectrum of hypothetical resonances are examined for local excesses or deficits that are inconsistent with the Standard Model prediction.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: D’AURIA, Saverio (University of Glasgow (GB)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 173 EPS-HEP 2017 / Report of Contributions Search for vector-like quarks
Contribution ID: 228 Type: Parallel Talk
Search for vector-like quarks Saturday, 8 July 2017 11:30 (15 minutes)
Vector like quarks appear in many theories beyond the Standard Model as a way to cancel the mass divergence for the Higgs boson. The current status of the ATLAS searches for the production of vector like quarks will be reviewed for proton-proton collisions at 13 TeV. This presentation will address the analysis techniques, in particular the selection criteria, the background modeling and the related experimental uncertainties. The phenomenological implications of the obtained results will also be discussed.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: NACKENHORST, Olaf (Universite de Geneve (CH)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 174 EPS-HEP 2017 / Report of Contributions Searches for new phenomena in le …
Contribution ID: 229 Type: Parallel Talk
Searches for new phenomena in leptonic final states using the ATLAS detector Friday, 7 July 2017 10:30 (15 minutes)
Many theories beyond the Standard Model predict new phenomena which decay to well isolated, high-pt leptons. Searches for new physics models with these signatures are performed using the ATLAS experiment at the LHC. The results reported here use the pp collision data sample collected in 2015 and 2016 by the ATLAS detector at the LHC with a centre-of-mass energy of 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: ARTONI, Giacomo (University of Oxford (GB)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 175 EPS-HEP 2017 / Report of Contributions Searches for new phenomena in fi …
Contribution ID: 230 Type: Parallel Talk
Searches for new phenomena in final states involving leptons and jets using the ATLAS detector Saturday, 8 July 2017 12:45 (15 minutes)
Many theories beyond the standard model predict new phenomena which decay to leptons and jets. Searches for new physics models with these signatures are performed using the ATLAS experiment at the LHC. The results reported here use the pp collision data sample collected in 2015 and2016 by the ATLAS detector at the LHC with a centre-of-mass energy of 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: MASTRANDREA, Paolo (Centre National de la Recherche Scientifique (FR)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 176 EPS-HEP 2017 / Report of Contributions ATLAS Searches for VV/V+gamma …
Contribution ID: 231 Type: Parallel Talk
ATLAS Searches for VV/V+gamma Resonances Saturday, 8 July 2017 10:15 (30 minutes)
Many extensions to the Standard Model predicts new particles decaying into two bosons (WW, WZ, ZZ, Zgamma) making these important signatures in the search for new physics. Searches for such diboson resonances have been performed in final states with different numbers of leptons, photons and jets where new jet substructure techniques to disentangle the hadronic decay products in highly boosted configuration are being used. This talk summarizes ATLAS searches for diboson resonances with LHC Run 2 data collected in 2015 and 2016.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: IORDANIDOU, Kalliopi (Columbia University (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 177 EPS-HEP 2017 / Report of Contributions ATLAS Searches for VH and HH R …
Contribution ID: 232 Type: Parallel Talk
ATLAS Searches for VH and HH Resonances Saturday, 8 July 2017 09:30 (15 minutes)
The discovery of a Higgs boson at the Large Hadron Collider (LHC) motivates searches forphysics beyond the Standard Model (SM) in channels involving coupling to the Higgs boson. A search for a massive resonance decaying into a standard model Higgs boson (h) and a W or Z boson or two a standard model Higgs bosons is performed. Final states with different number of leptons and where the Higgs decays into a b-quark pair are studied using different jet reconstruction techniques which are complementary in their acceptance for low and high mass transverse momentum. This talk summarizes ATLAS searches for diboson resonances including at least one H bosons in the final state with LHC Run 2 data.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: FISHER, Wade Cameron (Michigan State University (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 178 EPS-HEP 2017 / Report of Contributions Search for New Physics through th …
Contribution ID: 233 Type: Parallel Talk
Search for New Physics through the Reconstruction of Challenging and Long-Lived Signatures with the ATLAS detector √s = 13 TeV Friday, 7 July 2017 17:45 (15 minutes)
Many theories of beyond the Standard Model (BSM) physics predict unique signatures which are difficult to reconstruct and the background rates are also a challenge. Signatures from displaced vertices anywhere from the inner detector to the muon spectrometer as well as those of new par- ticles with fractional or multiple value of the charge of the electron or high mass stable charged particles are experimentally demanding signatures. The results of searches using data collected by the ATLAS detector of √s = 13 TeV pp collision is presented.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: PETTERSSON, Nora Emilia (University of Massachusetts (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 179 EPS-HEP 2017 / Report of Contributions Inclusive searches for squarks and …
Contribution ID: 234 Type: Parallel Talk
Inclusive searches for squarks and gluinos in final states with no leptons with the ATLAS detector Thursday, 6 July 2017 15:15 (15 minutes)
Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarises recent ATLAS results on inclusive searches for supersymmetric squarks and gluinos, including third generation squarks produced in the decay of gluinos. The searches involve final states containing jets, missing trans- verse momentum and no light leptons, taus or photons, and were performed with pp collisions at a centre-of-mass energy of 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: DUCU, Otilia Anamaria (Universite de Montreal (CA)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 180 EPS-HEP 2017 / Report of Contributions Inclusive searches for squarks and …
Contribution ID: 235 Type: Parallel Talk
Inclusive searches for squarks and gluinos in final states with leptons with the ATLAS detector Thursday, 6 July 2017 15:45 (15 minutes)
Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarises recent ATLAS results on inclusive searches for supersymmetric squarks and gluinos, including third generation squarks pro- duced in the decay of gluinos. The searches involve final states containing jets, missing transverse momentum and one or more leptons, and were performed with pp collisions at a centre-of-mass energy of 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: POVEDA TORRES, Ximo (CERN) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 181 EPS-HEP 2017 / Report of Contributions Searches for direct pair production …
Contribution ID: 236 Type: Parallel Talk
Searches for direct pair production of third generation squarks in final states with no leptons with the ATLAS detector Thursday, 6 July 2017 17:45 (15 minutes)
Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Top or bottom squarks with masses less than or around one TeV can also give rise to direct pairpro- duction rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk presents recent ATLAS results from searches for direct stop and sbottom pair production in final states containing no leptons, using the data collected during the LHCRun2.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: LARI, Tommaso (University and INFN, Milano) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 182 EPS-HEP 2017 / Report of Contributions Searches for direct pair production …
Contribution ID: 237 Type: Parallel Talk
Searches for direct pair production of third generation squarks in final states with leptons with the ATLAS detector Thursday, 6 July 2017 18:00 (15 minutes)
Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Top or bottom squarks with masses less than or around one TeV can also give rise to direct pairpro- duction rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk presents recent ATLAS results from searches for direct stop and sbottom pair production in final states with leptons, using the data collected during the LHCRun2.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: PANI, Priscilla (CERN) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 183 EPS-HEP 2017 / Report of Contributions Searches for electroweak producti …
Contribution ID: 238 Type: Parallel Talk
Searches for electroweak production of supersymmetric gauginos and sleptons with the ATLAS detector Friday, 7 July 2017 14:30 (15 minutes)
Many supersymmetry models feature gauginos and also sleptons with masses less than a few hun- dred GeV. These can give rise to direct pair production rates at the LHC that can be observed inthe data sample recorded by the ATLAS detector. The talk presents results from searches for gaugino and slepton pair production in final states with leptons, and were performed with pp collisions at a centre-of-mass energy of 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: ZINONOS, Zinonas (Max-Planck-Institut fur Physik, München (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 184 EPS-HEP 2017 / Report of Contributions Search for R-parity violating super …
Contribution ID: 239 Type: Parallel Talk
Search for R-parity violating supersymmetry with the ATLAS detector Friday, 7 July 2017 15:15 (15 minutes)
R-parity violation introduces new signatures to be considered in the search for supersymmetry at the LHC. Strongly interacting resonances may decay to jets, sleptons may decay via lepton-flavour violating processes and lightest supersymmetric particles may decay into many particles with or without missing transverse momentum. The talk presents recent results from searches of super- symmetry in resonance production and R-parity violating signatures with the ATLAS detector.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: MEHLHASE, Sascha (Ludwig-Maximilians-Univ. Muenchen (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 185 EPS-HEP 2017 / Report of Contributions Search for Long-lived particles wit …
Contribution ID: 240 Type: Poster Presentation
Search for Long-lived particles with the ATLAS detector
Several supersymmetric models predict the production of massive long-lived supersymmetric par- ticles. Such particles, if charged, may be detected through abnormal specific energy loss or long time-of-flight to the calorimeters. The poster presents recent results from searches of long-lived supersymmetric charged particles using proton-proton collisions at a centre of mass energy of 13 TeV with the ATLAS detector.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: SAITO, Masahiko (University of Tokyo (JP)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 186 EPS-HEP 2017 / Report of Contributions Search for compressed SUSY scena …
Contribution ID: 241 Type: Parallel Talk
Search for compressed SUSY scenarios with the ATLAS detector Thursday, 6 July 2017 16:45 (15 minutes)
Scenarios where multiple SUSY states are nearly degenerate in mass produce soft decay products, and they represent an experimental challenge for ATLAS. This talk presents recent results of anal- yses explicitly targeting such “compressed” scenarios with a variety of experimental techniques. All results make use of proton-proton collisions collected at a centre of mass of 13 TeV with the ATLAS detector.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: MAURER, Julien (IFIN-HH (RO)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 187 EPS-HEP 2017 / Report of Contributions CMB bounds on primordial black h …
Contribution ID: 244 Type: Parallel Talk
CMB bounds on primordial black holes Friday, 7 July 2017 10:30 (15 minutes)
I will describe the physical mechanisms and the actual bounds that CMB anisotropy studies put on primordial black holes, notably if they constitute a sizable fraction of dark matter. Both mass- independent gravitational effects (linked to mergers) and mass-dependent ones (due to electro- magnetic energy injection) will be covered. I will also briefly comment on the complementarity of other cosmological bounds (primordial nucleosynthesis, large scale structures, CMB spectral distortions) and on some future prospects.
Experimental Collaboration
Primary author: SERPICO, Pasquale Dario (LAPTh - CNRS & Univ. de Savoie (France)) Presenters: SERPICO, Pasquale Dario (LAPTh - CNRS & Univ. de Savoie (France)); SERPICO, Pasquale (LAPTh - CNRS & Univ. Savoie (FR)); SERPICO, Pasquale (LAPTH, Annecy-le-vieux) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 188 EPS-HEP 2017 / Report of Contributions Search for the gauge boson of a se …
Contribution ID: 245 Type: Parallel Talk
Search for the gauge boson of a secluded sector with the PADME experiment at LNF Thursday, 6 July 2017 18:15 (15 minutes)
Massive photon-like particles are predicted in many extensions of the Standard Model with a hid- den sector where dark matter is secluded. They are vector bosons mediating the interaction be- tween dark matter particles and can be produced in scattering of ordinary particles through afaint mixing to the photon. Most of the present experimental constraints on this “dark photon” (A’) rely on the hypothesis of dominant decays to lepton pairs. The PADME experiment will search for the e+e−→γA’ process in a positron-on-target experiment, assuming a decay of the A’ into invisible particles of the hidden sector. The positron beam of the DAΦNE Beam-Test Facility, at Laboratori Nazionali di Frascati of INFN, will be used. A fine-grained, high-resolution calorimeter will mea- sure the momentum of the photon in events with no other activity in the detector, thus allowing to measure the A’ mass as the missing mass in the final state. In about one year of data taking, a sensitivity on the interaction strength (ε parameter) down to 0.001 is achievable in the mass region M(A’)<23.7 MeV.
The experiment is currently under construction and it is planned to take data in 2018. Thestatus of PADME and its physics potential will be reviewed.
Experimental Collaboration PADME
Primary author: COLLABORATION, PADME (INFN) Presenter: GIANOTTI, Paola (INFN e Laboratori Nazionali di Frascati (IT)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 189 EPS-HEP 2017 / Report of Contributions Jet measurements in heavy-ion col …
Contribution ID: 246 Type: Parallel Talk
Jet measurements in heavy-ion collisions with the ATLAS detector Friday, 7 July 2017 15:15 (15 minutes)
In relativistic heavy-ion collisions, a hot medium with a high density of unscreened colour charges is produced. Jets are produced at the early stages of this collision and are known to become atten- uated as they propagate through the hot matter. One manifestation of this energy loss is alower yield of jets emerging from the medium than expected in the absence of medium effects. Another manifestation of the energy loss is the modification of the dijet balance and the modification of fragmentation functions. In this talk, the latest ATLAS results on single jet suppression, dijet sup- pression, photon-jet correlations, and modification of the jet internal structure in Pb+Pb collisions will be presented.
Experimental Collaboration ATLAS Collaboration
Primary author: ATLAS, Collaboration Presenter: SPOUSTA, Martin (Charles University) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 190 EPS-HEP 2017 / Report of Contributions Measurement of quarkonia produc …
Contribution ID: 247 Type: Parallel Talk
Measurement of quarkonia production in heavy-ion collisions with the ATLAS detector Thursday, 6 July 2017 09:45 (15 minutes)
The suppression of heavy quarkonia states in heavy-ion collisions is a phenomenon understood as a consequence of QGP formation in the hot, dense system formed in heavy-ion collisions at the LHC. In addition to hot matter effects in heavy-ion collisions , cold nuclear effects may alsoaffect quarkonia production . Therefore, a full assessment requires detailed studies on the effects present in both A-A and p+A collisions. Based on p+Pb data collected in 2013 and pp and Pb+Pb data collected in 2015 at the LHC, the ATLAS experiment has studied prompt and non-prompt J/psi and psi(2S) productions as well as Upsilon production via the di-muon decay final states. The results are of the various measurements are discussed.
Experimental Collaboration ATLAS Collaboration
Primary author: ATLAS, Collaboration Presenter: KREMER, Jakub Andrzej (AGH University of Science and Technology (PL)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 191 EPS-HEP 2017 / Report of Contributions Electroweak bosons in heavy-ion c …
Contribution ID: 248 Type: Parallel Talk
Electroweak bosons in heavy-ion collisions measured with the ATLAS detector Friday, 7 July 2017 12:30 (15 minutes)
Electroweak bosons do not interact strongly with the dense and hot medium formed in nuclear col- lisions, and thus are sensitive to the nuclear modification of parton distribution functions (nPDFs). The ATLAS detector, optimised to search for new physics in proton-proton interactions, iswell equipped to measure photons, W and Z bosons in the high occupancy environment produced in heavy-ion collisions. Results from the ATLAS experiment on photons, W, and Z boson yields in lead-lead and proton-lead collisions are presented. These results have particular importance in the context of understanding the collision geometry and nuclear initial state.
Experimental Collaboration ATLAS Collaboration
Primary author: ATLAS, Collaboration Presenter: PEREPELITSA, Dennis (University of Colorado Boulder) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 192 EPS-HEP 2017 / Report of Contributions Measurements of multi-particle co …
Contribution ID: 249 Type: Parallel Talk
Measurements of multi-particle correlations and collective flow with the ATLAS detector Friday, 7 July 2017 09:30 (15 minutes)
The measurement of flow harmonics of charged particles from v_2 to v_7 in Pb+Pb collisions in the wide range of transverse momentum and pseudorapidity provides not only a way to study the initial state of the nuclear collisions and soft particle collective dynamics, but also provides insight into jet quenching via the measurement of flow harmonics at high transverse momenta. The longi- tudinal fluctuations of the v_n and event-plane angles Psi_n are also presented. The longitudinal flow decorrelations have contributions from v_n-magnitude fluctuations and event plane twist.A four-particle correlator is used to separate these two effects. Results show both effects have alin- ear dependence on pseudorapidity separation from v_2 to v_5, and show a small but measurable variation with collision energy. While collectivity is well established in collisions involving heavy nuclei, its evidence in pp collisions is less clear. In order to assess the collective nature of multi- particle production, the correlation measurements are extended to include azimuthal correlations measured using multi-particle cumulants. The measurements of multi-particle cumulants c_2{2–8} confirm the evidence for collective phenomena in p+Pb and low-multiplicity Pb+Pb collisions. For pp collisions, the measurements of cumulants do not yet provide clear evidence for collectivity as they are susceptible to event-by-event multiplicity fluctuations. A new modified cumulant method, which suppresses both the contribution of multiplicity fluctuations and non-flow effects, isused to address this issue.
Experimental Collaboration ATLAS Collaboration
Primary author: ATLAS, Collaboration Presenter: BOLD, Tomasz (AGH Univ. of Science and Technology, Krakow) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 193 EPS-HEP 2017 / Report of Contributions Electromagnetic processes in ultra …
Contribution ID: 251 Type: Parallel Talk
Electromagnetic processes in ultra peripheral lead-lead collisions with ATLAS Friday, 7 July 2017 10:30 (15 minutes)
The large equivalent-photon fluxes accompanying Pb ion beams at the LHC initiate photon-photon and photo-nuclear interactions which dominate when the colliding nuclei have large impact pa- rameter (ultra-peripheral collisions). These electromagnetically-induced processes are sensitive to the nuclear wave-function and in particular the nuclear modifications of the nucleon parton distri- bution functions (nPDFs). As such, they are complementary to the ongoing p+A program at RHIC and the LHC, as well as the upcoming electron-ion collider (EIC) program in the US. The absolute rates of single and multiple neutron emission into one or both zero-degree calorimeters (ZDCs) will be presented, to test theoretical predictions for the photon fluxes as well as the photonuclear absorption. High-mass dilepton pair continuum rates have been measured and compared with theoretical predictions to test expectations for two-photon interactions, and good agreement with model calculations is obtained. Finally, evidence for the elastic scattering of photons (”light-by- light” scattering) will be presented, a previously unobserved process made possible by thehigh photon flux and low event pileup provided by the LHC. While of intrinsic interest as a heretofore- unobserved standard model process, it has also been proposed as a clean channel for searches for beyond the standard model (BSM) physics.
Experimental Collaboration ATLAS Collaboration
Presenter: SCHOTT, Matthias (Johannes-Gutenberg-Universitaet Mainz (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 194 EPS-HEP 2017 / Report of Contributions Measurements of multi-jet produc …
Contribution ID: 252 Type: Parallel Talk
Measurements of multi-jet production in ultra-peripheral lead-lead collisions with the ATLAS detector Friday, 7 July 2017 12:45 (15 minutes)
Beams of relativistic heavy ions accompanied by a large flux of equivalent photons, and photon- induced reactions are the dominant interaction mechanism in heavy-ion collisions when the col- liding nuclei have transverse separation larger that the nuclear diameter. In these ultra-peripheral collisions (UPC) the photon can provide a clean probe of the partonic structure of the nucleus analogous with deep inelastic scattering. This talk presents measurements of dijet production in ultra-peripheral Pb+Pb collisions performed with the ATLAS detector. Events are selected using requirements on rapidity gaps and forward neutron production to identify the photo-nuclear pro- cesses. The relatively clean environment of these events allows for measurements in a regionofx and Q2 where significant nuclear PDF modifications are expected to be present and notstrongly constrained by previous measurements.
Experimental Collaboration ATLAS Collaboration
Primary author: ATLAS, Collaboration Presenter: COLE, Brian (Columbia University (US)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 195 EPS-HEP 2017 / Report of Contributions The challenge of explaining new p…
Contribution ID: 253 Type: Parallel Talk
The challenge of explaining new physics concepts and phenomena Saturday, 8 July 2017 10:45 (15 minutes)
With the advent of higher energies and higher collision rates the LHC continues the exciting voy- age towards new physics, allowing physicists all over the world to explore a previously unknown territory full of promise. So far the IPPOG international masterclass developers, with the help of physicists and in close contact with teachers, have been successful in designing educational material and in engaging high school students to work, with real LHC data, on current hot topics, such as the discovery of the Higgs boson. One of the current challenges is to convey advanced physics concepts and to introduce new ideas beyond today’s theoretical framework describing the content of the Universe and its evolution. How can we influence the teaching at schools in order to provide a better basis for attending masterclass-like events, and in general for understanding experimental results and new theoretical ideas? An IPPOG initiative deals with effective ways of explaining new physics. Moreover, physicists, in close contact with high school teachers and university departments of education, are investigating a more professional and research-based view on methods and ideas for introducing and explain- ing new physics concepts. A program plan together with relevant material must be created and incorporated to suit the high school curriculum and even replace the ordinary text book on the subject.
This talk will suggest how educational material could be improved and extended to cover cru- cial topics and concepts and to better accommodate real learning at the Masterclasses and similar events, and to facilitate the understanding of new results as they keep streaming from the LHC and other current and future research instruments. This is crucial in explaining new physics concepts and related enigmas such as dark matter, the role of gravity at the quantum scale, the possible unification of all fundamental forces and the physics of the early Universe.
Experimental Collaboration IPPOG
Primary authors: OULD-SAADA, Farid (University of Oslo (NO)); GRAMSTAD, Eirik (University of Oslo (NO)); BUGGE, Magnar Kopangen (University of Oslo (NO)) Presenter: GRAMSTAD, Eirik (University of Oslo (NO)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 196 EPS-HEP 2017 / Report of Contributions The Potential of the ILC for Discov …
Contribution ID: 256 Type: Parallel Talk
The Potential of the ILC for Discovering New Particles Friday, 7 July 2017 14:30 (15 minutes)
The LHC did not discover new particles beyond the Standard Model Higgs boson at 7and8TeV, or in the first data samples at 13 TeV. However, the complementary nature of physics with e+e- collisions still offers many interesting scenarios in which new particles can be discovered atthe ILC. These scenarios take advantage of the capability of e+e- collisions to observe particles with missing energy and small mass differences, to observe mono-photon events with precisely con- trolled backgrounds, and to observe the full range of exotic decay modes of the Higgs boson. The searches that an e+e- collider makes possible are particularly important for models of dark matter involving a dark sector with particles above the modest energy reach of fixed-target experiments. In this talk, we will review the opportunities that the ILC offers for new particle discovery.
Experimental Collaboration ILC, LCC Physics working group
Primary authors: PESKIN, Michael; GROJEAN, Christophe (DESY (Hamburg) and Humboldt University (Berlin)); FUJII, Keisuke (High Energy Accelerator Research Organization (JP)) Presenter: LIST, Jenny (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 197 EPS-HEP 2017 / Report of Contributions Precision Higgs Measurements at t …
Contribution ID: 257 Type: Parallel Talk
Precision Higgs Measurements at the 250 GeV ILC Friday, 7 July 2017 15:15 (15 minutes)
The plan for the International Linear Collider is now being prepared as a staged design, withthe first stage at 250 GeV and later stages achieving the full project specifications with 4 ab-1at500 GeV. This talk will present the capabilities for precision Higgs boson measurements at250GeV and their relation to the full ILC program. It will show that the 250 GeV stage of ILC will already provide many compelling results in Higgs physics, with new measurements not available at LHC, model-independent determinations of key parameters, and tests for and possible discrimination of a variety of scenarios for new physics.
Experimental Collaboration ILC, LCC Physics working group
Primary authors: PESKIN, Michael; GROJEAN, Christophe (DESY (Hamburg) and Humboldt University (Berlin)); FUJII, Keisuke (High Energy Accelerator Research Organization (JP)) Presenter: BARKLOW, Tim (SLAC National Accelerator Laboratory (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 198 EPS-HEP 2017 / Report of Contributions Study of the e+e- -> hadrons react …
Contribution ID: 258 Type: Parallel Talk
Study of the e+e- -> hadrons reactions with CMD-3 detector at VEPP-2000 collider Saturday, 8 July 2017 09:15 (15 minutes)
The CMD-3 detector is taking data at the VEPP-2000 e+e collider (BINP, Novosibirsk, Russia). The CMD-3 is the general purpose particle magnetic (1.3 T) detector, equipped with the tracking system, two crystal (CSI and BGO) calorimeters, liquid Xe calorimeter, TOF and muon systems. The main goal of experiments with CMD-3 is the measurement of the cross-sections and dynamics of the exclusive modes of e+e–>hadrons reactions. In particular, these results provide important input for the calculation of the hadronic contribution to the muons anomalous magnetic moment. First round of data taking with the CMD-3 detector at the VEPP-2000 e+e collider was performed in 2011-2013 with about 60 1/pb integrated luminosity in the energy range from 0.32 to 2.0 GeV in c.m. Amount of collected data exceeds all previous experiments. The beam energy was continuously measured concurrently with the data taking using a Compton backscattering system. Here we present the survey of new and published analysis results, including precise measurement of e+e–>pi+pi- reaction, as well as other hadron final states with up to six pions or states include twokaons.
At the end of 2016 the VEPP-2000 collider resumed operations after upgrade of the injection system, and a performance close to the project luminosity of 10^32 cm-2s-1 at 2 GeV has been demonstrated. First preliminary results of new 2017 run are also presented.
Experimental Collaboration CMD3-Collaboration
Primary author: Prof. SOLODOV, Evgeny (BudkerINP, Novosibirsk State University) Co-author: CMD3-COLLABORATION Presenter: Prof. SOLODOV, Evgeny (BudkerINP, Novosibirsk State University) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 199 EPS-HEP 2017 / Report of Contributions Precise and Systematic Long- …
Contribution ID: 259 Type: Poster Presentation
Precise and Systematic Long-duration Study of Solar Modulation on Elementary Particles and Nuclei with AMS on the Space Station
We present the precise monthly time variation of the e+, e-, p and He fluxes by the Alpha Magnetic Spectrometer on the International Space Station. The data were collected during the ascending phase of solar cycle #24 through its maximum and toward its minimum. This covers one half solar cycle. For the first time, the time evolution of cosmic rays of opposite charges and different mass and charge are simultaneously measured during the reversal of the Sun’s magnetic field polarity. These measurements are crucial for solar modulation modelling during periods of high-level solar activity. They also provide constraints for modelling astrophysical backgrounds for dark matter searches.
Experimental Collaboration AMS Collaboration
Primary author: GRAZIANI, Maura (KIT - Karlsruhe Institute of Technology (DE)) Co-authors: TOMASSETTI, Nicola (Perugia University & INFN- Perugia); DELLA TORRE, Stefano (Universita & INFN, Milano-Bicocca (IT))
Presenter: GRAZIANI, Maura (KIT - Karlsruhe Institute of Technology (DE)) Session Classification: Poster session
Track Classification: Astroparticle Physics
October 6, 2021 Page 200 EPS-HEP 2017 / Report of Contributions Latest results on searches for MSS …
Contribution ID: 260 Type: Parallel Talk
Latest results on searches for MSSM Higgs Search and Beyond at CMS Thursday, 6 July 2017 12:45 (15 minutes)
A summary of recent progress of MSSM Higgs searches in CMS experiment. And also including Higgs like resonance searches with other BSM models, for example 2HDM, Gravitons, etc.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: ASAWATANGTRAKULDEE, Chayanit (Deutsches Elektronen-Synchrotron (DESY)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 201 EPS-HEP 2017 / Report of Contributions Latest CMS results on Higgs boson …
Contribution ID: 261 Type: Parallel Talk
Latest CMS results on Higgs boson production in association with top quarks Friday, 7 July 2017 11:45 (15 minutes)
Latest 13 TeV results of CMS searches regarding the Higgs boson production in association with top quarks will be presented. This talk will cover the different CMS analyses covering themain Higgs boson decay modes (gamma gamma, ZZ, WW, and tautau).
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: GHOSH, Saranya Samik (CEA/IRFU,Centre d’etude de Saclay Gif-sur-Yvette (FR)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 202 EPS-HEP 2017 / Report of Contributions Search for a new spin-zero resona …
Contribution ID: 262 Type: Parallel Talk
Search for a new spin-zero resonance in diboson channels at 13 TeV Thursday, 6 July 2017 15:15 (15 minutes)
The talk aims to present the most recent results on heavy scalar search in diboson finalstates (WW,ZZ) combining different final states using full 2016 data collected by CMS detector.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: MAGITTERI, Alessio (Universite Catholique de Louvain (UCL) (BE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 203 EPS-HEP 2017 / Report of Contributions Search for rare and exotic Higgs b …
Contribution ID: 263 Type: Parallel Talk
Search for rare and exotic Higgs boson decays at CMS Thursday, 6 July 2017 11:45 (30 minutes)
Recent results on CMS searches for exotic decays of the Higgs boson H(125) will be presented in this talk including searches for invisible and quasi invisible decays, lepton flavour violating (eµ, eτ, µτ) decays, and decays to light scalars. The current status of searches for rare decays of standard model Higgs boson will also be summarized.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: DEV, Nabarun (University of Notre Dame (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 204 EPS-HEP 2017 / Report of Contributions Measurement of the Higgs boson d …
Contribution ID: 264 Type: Parallel Talk
Measurement of the Higgs boson differential and fiducial cross sections at CMS Friday, 7 July 2017 09:30 (15 minutes)
After the discovery of a Higgs boson, it is of great importance to study its properties underamin- imal set of assumptions. The definition of a fiducial phase-space for the measurement ofcross sections allows to minimise uncertainties due to extrapolations and to model dependence. A mea- surement of the Higgs boson differential fiducial cross sections is performed in several final states, including diphoton and ZZ channels, using 36/fb of pp collisions at a center-of-mass energy of13 TeV collected by the CMS experiment at the LHC. The fiducial cross sections are measured asa function of kinematic observables characterising the production mechanism of the Higgs boson. A review of the analysis strategy and event categorisation will be provided and the most recent results will be shown.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: TAVOLARO, Vittorio Raoul (Eidgenoessische Technische Hochschule Zuerich (CH))
Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 205 EPS-HEP 2017 / Report of Contributions Latest CMS results on ttH(bb) pro …
Contribution ID: 265 Type: Parallel Talk
Latest CMS results on ttH(bb) production Friday, 7 July 2017 12:15 (15 minutes)
Latest 13 TeV results of CMS searches for the Higgs boson produced in association with top quarks and decaying to b quarks will be presented. This talk will include the first CMS results for thefully hadronic channel with the matrix element method as well as the semi-leptonic and di-leptonic channels with the matrix element method and BDT discriminant.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: SALERNO, Daniel (Universitaet Zuerich (CH)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 206 EPS-HEP 2017 / Report of Contributions Searches for associated production …
Contribution ID: 266 Type: Parallel Talk
Searches for associated production of the Higgs boson with a single top at 13 TeV at CMS Friday, 7 July 2017 12:30 (15 minutes)
The latest results of searches for the Standard Model Higgs boson produced in association witha single top quark (tHq, tHW) are presented. The analyses have been performed using the 13TeV pp collisions data recorded by the CMS experiment in 2015 and 2016.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: DAS, Pallabi (Tata Inst. of Fundamental Research (IN)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 207 EPS-HEP 2017 / Report of Contributions Searches for HH production at 13 …
Contribution ID: 267 Type: Parallel Talk
Searches for HH production at 13 TeV with the CMS detector Friday, 7 July 2017 10:15 (15 minutes)
The production of a pair of Higgs bosons provides a direct handle on the structure oftheHiggs field potential. While the HH production within the SM is very small and essentially outofthe experimental reach within the LHC Run II, several beyond SM theories foresee an enhancement that can be already probed with the available data. The latest searches for resonant and non- resonant Higgs pair production made using CMS Run II data are presented considering different decay modes of the Higgs boson.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: DALL’OSSO, Martino (Universita e INFN, Padova (IT)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 208 EPS-HEP 2017 / Report of Contributions Measurement of properties of Hig …
Contribution ID: 268 Type: Parallel Talk
Measurement of properties of Higgs boson decaying to pairs of W and Z bosons at 13 TeV with the CMS experiment Thursday, 6 July 2017 09:15 (15 minutes)
The studies on the properties of Higgs boson in H->ZZ->4l (l = e, μ) and H->WW->eνμν decay channels based on the data collected with the CMS experiment in Run2 are presented. The reported results include studies of the Higgs boson production modes using H->ZZ and H->WW decay channels, as well as measurements of the Higgs boson mass, signal strength, fiducial differential cross sections for its production in pp collisions, and anomalous HZZ couplings in H->ZZ decay channel.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: KIANI, Muhammad Bilal (Universita e INFN Torino (IT)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 209 EPS-HEP 2017 / Report of Contributions Measurement of properties of Hig …
Contribution ID: 269 Type: Poster Presentation
Measurement of properties of Higgs boson decaying to pairs of W and Z bosons at 13 TeV with the CMS experiment
The studies on the properties of Higgs boson in H->ZZ->4l (l = e, μ) and H->WW->eνμν decay channels based on the data collected with the CMS experiment in Run2 are presented. The reported results include studies of the Higgs boson production modes using H->ZZ and H->WW decay channels, as well as measurements of the Higgs boson mass, signal strength, fiducial differential cross sections for its production in pp collisions, and anomalous HZZ couplings in H->ZZ decay channel.
Experimental Collaboration
Presenter: KIANI, Muhammad Bilal (Universita e INFN Torino (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 210 EPS-HEP 2017 / Report of Contributions Results for SM Higgs decaying to …
Contribution ID: 270 Type: Parallel Talk
Results for SM Higgs decaying to bottom quarks or tau pairs Thursday, 6 July 2017 10:30 (15 minutes)
The latest results from CMS on the study of SM Higgs decaying to tau pair and searchforSM Higgs decaying to bottom quarks will be discussed. These results are based on the analysis ofp-p collisions at 13 TeV, collected from CMS in the year 2016.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: DE GRUTTOLA, Michele (CERN) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 211 EPS-HEP 2017 / Report of Contributions Search for a new Higgs boson-like …
Contribution ID: 271 Type: Parallel Talk
Search for a new Higgs boson-like low-mass resonance in the diphoton final state in pp collisions in CMS Friday, 7 July 2017 12:45 (15 minutes)
We present the results of a CMS search for a new Higgs boson-like resonance decaying into two photons in proton-proton collisions. We search for an excess of events over the standard model background prediction in the diphoton invariant mass spectrum.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: FINCO, Linda (Universite Claude Bernard-Lyon I (FR)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 212 EPS-HEP 2017 / Report of Contributions Inclusive search for boosted Higgs …
Contribution ID: 272 Type: Parallel Talk
Inclusive search for boosted Higgs bosons using H → bb decays with the CMS experiment Thursday, 6 July 2017 10:00 (15 minutes)
We present an inclusive search for a Higgs boson with high transverse momentum decaying to a bottom-antibottom quark pair in pp collisions using the 2016 data sample corresponding to 35.9fb−1collected by the CMS experiment at LHC. High pT Higgs bosons candidates are recon- structed in a single jet with opening angle corresponding to R = 0.8 (AK8 jet). Jet substructure and dedicated b-tagging techniques are then used to identify boosted Higgs boson to bb.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: VERNIERI, Caterina (Fermi National Accelerator Lab. (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 213 EPS-HEP 2017 / Report of Contributions The Latest CMS results on Higgs b…
Contribution ID: 273 Type: Parallel Talk
The Latest CMS results on Higgs boson decaying to two photons with 13 TeV data Thursday, 6 July 2017 09:30 (15 minutes)
The latest results of the measurement of the Higgs boson decaying into two photons withthefull 2016 data will be presented. The analysis is performed using the dataset recorded by theCMS experiment at the LHC from pp collisions at centre-of-mass energies of 13 TeV corresponding to an integrated luminosity of 35.9 1/fb.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: PLANER, Michael (University of Notre Dame (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 214 EPS-HEP 2017 / Report of Contributions Searches for exotic Higgs boson de …
Contribution ID: 274 Type: Poster Presentation
Searches for exotic Higgs boson decays at CMS
Recent results on searches for exotic production and decays of the Higgs boson H(125) are pre- sented. The current status of the searches for invisible and quasi invisible decays, lepton flavour violation (emu, etau, mutau) decays, decays to light scalars will be reviewed.
Experimental Collaboration
Presenter: DEV, Nabarun (University of Notre Dame (US)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 215 EPS-HEP 2017 / Report of Contributions Study of the Standard Model Higgs …
Contribution ID: 275 Type: Poster Presentation
Study of the Standard Model Higgs bosons decaying to taus at CMS
The most recent results from CMS on the study of the SM Higgs boson decaying into ataupair will be presented. The search, which makes use of full 2016 dataset, is performed.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: BOTTA, Valeria (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 216 EPS-HEP 2017 / Report of Contributions Vector-like quark production at th …
Contribution ID: 276 Type: Poster Presentation
Vector-like quark production at the LHC, beyond the Narrow Width Approximation
This paper explores effects of both finite width and interference (with background) inthepro- duction and decay of extra heavy quarks at the Large Hadron Collider (LHC). This dynamics is normally ignored in the standard experimental searcher and we assess herein the regions of valid- ity of current approaches. Further, we discuss the configuration of masses, widths and couplings where the latter breaks down.
Experimental Collaboration
Primary authors: Prof. MORETTI, Stefano (University of Southampton); Mr O’BRIEN, Dermot (University of Southampton); Dr PANIZZI, Luca (University of Genova); Mr PRAGER, Hugo (University Of Southampton)
Presenters: Mr O’BRIEN, Dermot (University of Southampton); OBRIEN, dermot (University of Southampton) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 217 EPS-HEP 2017 / Report of Contributions Top quark production cross- …
Contribution ID: 278 Type: Parallel Talk
Top quark production cross-section measurements with the ATLAS detector Friday, 7 July 2017 11:45 (15 minutes)
Measurements of the inclusive and differential top-quark pair and single-top production cross sec- tions in proton-proton collisions with the ATLAS detector at the Large Hadron Collider at center- of-mass energies of 8 TeV and 13 TeV are presented. The inclusive measurements reach high pre- cision and are compared to the best available theoretical calculations. Differential measurements of the kinematic properties of the top-quark production are also discussed. These measurements, including results using boosted tops, probe our understanding of top-quark pair production in the TeV regime.
Experimental Collaboration ATLAS
Primary authors: POLLARD, Chris (University of Glasgow (GB)); POLLARD, Christopher Samuel (Duke University)
Presenters: POLLARD, Chris (University of Glasgow (GB)); POLLARD, Christopher Samuel (Duke University) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 218 EPS-HEP 2017 / Report of Contributions Top quark properties measuremen …
Contribution ID: 279 Type: Parallel Talk
Top quark properties measurements with the ATLAS detector Friday, 7 July 2017 17:30 (15 minutes)
Precise measurements of the properties of the top quark test the Standard Model (SM) and can be used to constrain new physics models. As it may be significantly enhanced by the presence of new physics, the ttbar production charge asymmetry is measured inclusively and differentially using the 8 TeV ATLAS dataset using both the lepton+jets and dilepton channels, including a dedicated measurement for highly boosted top-quarks. In the SM the top-quark is predicted to decay almost exclusively into a W boson and a b-quark. Measurements of the W-helicity and spin correlations in ttbar production are presented as well as new measurements of CP asymmetries in b-hadron decays using top-quark events.
Experimental Collaboration ATLAS
Presenter: SPANO, Francesco (Royal Holloway, University of London (GB)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 219 EPS-HEP 2017 / Report of Contributions Measurements of ttbar+X using th …
Contribution ID: 280 Type: Parallel Talk
Measurements of ttbar+X using the ATLAS detector Saturday, 8 July 2017 09:00 (15 minutes)
The large centre-of-mass energy available at the proton-proton collider LHC allows for the copious production of top quark pairs in association with other final state particles at high transverse momenta. The ATLAS experiment has measured several final state observables that are sensitive to additional radiation in top anti-top quark final states. Results on the top production in association with W and Z bosons are presented as well as top pair production with a photon or with b quarks. Analyses probing the top pair production with additional QCD radiation include the multiplicity of jets for various transverse momentum thresholds in the 13 TeV data. These measurements are compared to modern Monte Carlo generators based on NLO QCD matrix element or LO multi-leg matrix elements.
Experimental Collaboration ATLAS
Presenter: KAWADE, Kentaro (Kobe University (JP)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 220 EPS-HEP 2017 / Report of Contributions Measurements of the top quark m …
Contribution ID: 281 Type: Parallel Talk
Measurements of the top quark mass with the ATLAS detector Friday, 7 July 2017 15:30 (15 minutes)
The top quark mass is one of the fundamental parameters of the Standard Model. ThelatestAT- LAS measurements of the top quark mass in top quark pair and single top final states are presented. A measurement using lepton+jets top-quark pair events is presented, where a multi-dimensional template fit is used to constrain the uncertainties on the energy measurements of jets. Themeasure- ment is combined with a measurement using dilepton events. A measurement in the all-hadronic channel is also reported. In addition an extraction of the top quark mass using leptonic kinematic variables compared with QCD calculations is discussed. Measurements that use precision theoret- ical QCD calculations for both inclusive ttbar production and ttbar production with an additional jet are also presented to extract the top quark mass in the pole-mass scheme.
Experimental Collaboration ATLAS
Presenter: NISIUS, Richard (Max-Planck-Institut fur Physik (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 221 EPS-HEP 2017 / Report of Contributions Single Top quark production cross …
Contribution ID: 282 Type: Parallel Talk
Single Top quark production cross section measurements using the ATLAS detector Friday, 7 July 2017 12:30 (15 minutes)
Measurements of single top-quark production in proton-proton collisions are presented based on the 8 TeV and 13 TeV ATLAS datasets. For the production of single top-quarks and single anti-top- quarks in the t-channel, the total production cross sections, their ratio, as well as measurements of inclusive and differential cross-sections are presented. Measurements of the inclusive and differen- tial production cross section of a single top quark in association with a W boson, the second largest single-top production mode, are also presented. Smaller single top quark measurements in the s- channel and in association with a Z boson are also presented. All measurements are compared to state-of-the-art theoretical calculations.
Experimental Collaboration ATLAS
Presenter: ALHROOB, Muhammad (University of Oklahoma (US)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 222 EPS-HEP 2017 / Report of Contributions Anomalous couplings in single top …
Contribution ID: 283 Type: Parallel Talk
Anomalous couplings in single top and searches for rare top quark couplings with the ATLAS detector Friday, 7 July 2017 18:15 (15 minutes)
The top quark is the heaviest known fundamental particle and probing its couplings withthe other fundamental particle may open a window to physics beyond the Standard Model. Single top-quark production provides a unique window to study the coupling between the top quark, the W boson and the b quark, since it involves the Wtb vertex in both production and decay. Measurements of angular correlations in single top quark events in the t-channel exchange of a W boson are presented based on the 8 TeV ATLAS dataset. Differential cross-sections are measured as a function of angular variables that are sensitive to anomalous contributions to the Wtb vertex and the top quark polarization. Searches for flavour-changing neutral current top-quark interactions are also discussed based on the 8 TeV and 13 TeV ATLAS dataset. Searches for rare top quark decays to Higgs and Z bosons are presented in top quark production, and searches for rare top quark interactions with gluons and Z bosons are presented in single top quark production.
Experimental Collaboration ATLAS
Presenter: CABRERA URBAN, Susana (Univ. of Valencia and CSIC (ES)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 223 EPS-HEP 2017 / Report of Contributions Measurement of the W boson mass …
Contribution ID: 284 Type: Parallel Talk
Measurement of the W boson mass with the ATLAS detector Thursday, 6 July 2017 10:45 (15 minutes)
A precise measurement of the mass of the W boson represents an important milestone to test the overall consistency of the Standard Model. Since the discovery of a Higgs Boson, the the W boson mass is predicted to 7 MeV precision, while the world average of all measurements is 15 MeV, making the improved measurement an important goal.
The ATLAS experiment at the LHC represents an ideal laboratory for such a precise measurement. Large samples of many millions of leptonic decays of W and Z bosons were collected with efficient single lepton triggers in the 7 TeV data set corresponding to an integrated luminosity of 4.6/fb. With these samples the detector and physics modelling has been studied in great detail to enable a systematic uncertainty on the measurement that approaches the statistical power of the data of 7 MeV per decay channel as far as possible.
Experimental Collaboration ATLAS
Presenter: CAMARDA, Stefano (CERN) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 224 EPS-HEP 2017 / Report of Contributions Measurement of the diboson prod …
Contribution ID: 285 Type: Parallel Talk
Measurement of the diboson production cross section at 8TeV and 13TeV and limits on anomalous triple gauge couplings with the ATLAS detector Friday, 7 July 2017 09:15 (15 minutes)
Measurements of the cross sections of the production of pairs of electroweak gauge bosons at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has performed new measurements of integrated and differential cross sections of the production of heavy di-boson pairs in fully-leptonic and semi-leptonic final states at centre-of-mass energies of 8 and 13 TeV. We present in particular new measurements of WW, WZ and Z+photon cross sections in semi-leptonic or hadronic decays using standard or boosted technologies and new measurements of the inclusive and differential ZZ cross section at 13 TeV in various decay modes. In addition, the invariant mass of four leptons is measured at 13 TeV over a larger range, covering several production modes.
The results are compared to predictions at NLO (and NNLO) in pQCD and provide constraints on new physics, by setting limits on anomalous triple gauge couplings.
Experimental Collaboration ATLAS
Presenter: BUTTINGER, Will (Brookhaven National Laboratory (US)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 225 EPS-HEP 2017 / Report of Contributions Measurements of Vector boson fus …
Contribution ID: 286 Type: Parallel Talk
Measurements of Vector boson fusion with the ATLAS detector Thursday, 6 July 2017 15:15 (15 minutes)
The most recent results on the production of single W and Z bosons with two jets at highinvariant mass at centre-of-mass energies of 7, 8 and 13 TeV are presented. Integrated and differential cross sections are measured in different phase space regions with varying degree of sensitivity tothe electroweak production in vector boson fusion. The cross section for the electroweak W boson production has been extracted for both integrated and for the first time differential distributions. In addition, the cross-section for the electroweak production of two jets in association with a Z boson is measured for the first time at a centre-of-mass energy of 13 TeV. The results are compared to state-of-the-art theory predictions and are used to constrain anomalous gauge couplings.
Experimental Collaboration ATLAS
Presenter: BRENDLINGER, Kurt (Deutsches Elektronen-Synchrotron (DE)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 226 EPS-HEP 2017 / Report of Contributions Vector boson scattering, triple …
Contribution ID: 287 Type: Parallel Talk
Vector boson scattering, triple gauge-boson final states and limits on anomalous quartic gauge couplings with the ATLAS detector Friday, 7 July 2017 09:30 (15 minutes)
Measurements of the cross sections of the production of three electroweak gauge bosons and of vector-boson scattering processes at the LHC constitute stringent tests of the electroweak sector of the Standard Model and provide a model-independent means to search for new physics at the TeV scale. The ATLAS collaboration has recently searched for the production of three W bosons or of a W boson and a photon together with a Z or W boson at a center of mass energy of 8 TeV. We also present searches for the electroweak production of a Z boson and a photon together with two jets. The results are compared to state-of-the art theory predictions and have been usedto constrain anomalous quartic gauge couplings.
Experimental Collaboration ATLAS
Presenter: LI, Bing (University of Michigan (US) & Univ. of Science & Tech. of China (CN)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 227 EPS-HEP 2017 / Report of Contributions Differential measurements of the …
Contribution ID: 289 Type: Parallel Talk
Differential measurements of the Drell-Yan cross-sections at 8 TeV withthe ATLAS detector Thursday, 6 July 2017 09:45 (15 minutes)
Precision measurements of the Drell-Yan production of W and Z bosons at the LHC provide a benchmark of our understanding of perturbative QCD and electroweak processes and probe the proton structure in a unique way.
The ATLAS collaboration has performed a new precise triple differential cross-section measure- ment as a function of M(ll), dilepton rapidity and cosθ∗ defined in the Collins-Soper frame. This measurement provides sensitivity to the PDFs and the Z forward-backward asymmetry, AFB, which is derived and will be presented. This builds the foundation for a possible future extrac- tion of the weak-mixing angle.
Experimental Collaboration ATLAS
Presenter: GLAZOV, Alexander (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 228 EPS-HEP 2017 / Report of Contributions High Precision Measurement of th …
Contribution ID: 290 Type: Parallel Talk
High Precision Measurement of the differential vector boson cross-sections with the ATLAS detector Thursday, 6 July 2017 09:15 (15 minutes)
Measurements of the Drell-Yan production of W and Z/gammabosons at the LHC provide a bench- mark of our understanding of perturbative QCD and probe the proton structure in a unique way. The ATLAS collaboration has performed new high precision measurements at center-of-mass energies of 7. The measurements are performed for W+, W- and Z/gamma bosons integrated and as a function of the boson or lepton rapidity and the Z/gamma* mass. Unprecedented precision is reached and strong constraints on Parton Distribution functions, in particular the strange density are found. Z cross sections are also measured at center-of-mass energies of 8 eV and 13TeV, and cross-section ratios to the top-quark pair production have been derived. This ratio measurement leads to acan- cellation of systematic effects and allows for a high precision comparison to the theory predictions.
The cross section of single W events has also been measured precisely at center-of-mass energies of 8TeV and 13TeV and the W charge asymmetry has been determined.
Experimental Collaboration ATLAS
Presenter: ARMBRUSTER, Aaron James (CERN) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 229 EPS-HEP 2017 / Report of Contributions Studying WWγ and WZγ producti …
Contribution ID: 291 Type: Poster Presentation
Studying WWγ and WZγ production in proton-proton collisions at √s = 8 TeV with the ATLAS experiment
Measuring triboson final states at the Large Hadron Collider provides a test of the non-Abelian structure of the Standard Model of particle physics. This structure gives rise to self-interactions of the electroweak gauge bosons and the SM predicts the exact strength of these couplings of the gauge bosons. Any observed deviation from the SM expectations would imply the existence of physics beyond the SM.
This poster presents a study of triboson production using WWγ and WZγ events producedin proton–proton collisions corresponding to an integrated luminosity of 20.2 fb−1 at a centre-of- mass energy of √s = 8 TeV and recorded with the ATLAS detector. The WWγ production cross section is measured using the fully-leptonic final state containing an electron, a muon and a photon. Furthermore, upper limits on the production cross section of the fully-leptonic final state and semi- leptonic final states containing an electron or a muon, two jets and a photon are derived. The results are compared to the cross sections predicted by the Standard Model of particle physics at next-to-leading order precision. In addition, upper limits on the production cross section are derived in a phase space optimised for the search of physics beyond the Standard Model. The limits are computed for all final states individually and for the combination of the electron and muon channel of the semi-leptonic final states. The results obtained in this phase space are combined and interpreted in the context of anomalous quartic gauge couplings using an effective field theory.
Experimental Collaboration ATLAS
Presenter: DJUVSLAND, Julia Isabell (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 230 EPS-HEP 2017 / Report of Contributions Measurement of tau polarization i …
Contribution ID: 292 Type: Poster Presentation
Measurement of tau polarization in Z->tautau decays with the ATLAS detector
Decays of the Z boson in the Standard Model violate parity, leading to a net polarization of the decay products. Z boson decays to pairs of tau leptons provide a unique opportunity to measure the tau polarization by using the kinematics of the subsequent tau decays, hence testing the Standard Model predictions. They also provide a unique opportunity to pioneer experimental techniques that assess the tau helicity and may be used in searches for new particles and to study the Higgs boson.
A measurement of the tau polarization in Z->tautau decays is presented. The analysis is based on the 20.3/fb of proton proton collision data collected at a center of mass energy of 8TeVbythe ATLAS experiment at the CERN Large Hadron Collider in 2012. The tau polarization is measured in events in which one tau decays leptonically and the other decays hadronically by using the kinematics of the hadronic decay.
Experimental Collaboration ATLAS
Presenter: WINTER, Benedict Tobias (University of Bonn (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 231 EPS-HEP 2017 / Report of Contributions Constraints on the Parton Density …
Contribution ID: 293 Type: Parallel Talk
Constraints on the Parton Density Functions of the Proton by Measurements with the ATLAS Detector Friday, 7 July 2017 17:00 (15 minutes)
Parton distribution functions (PDFs) are crucial ingredients for measurements at hadron colliders, since they describe the initial states and therefore critically impact the precision of cross section predictions for observables. This talk will review recent precision analyses, where the PDFsplay an important role and discuss the impact of several new ATLAS cross-section measurements on PDFs of the proton. Particular emphasis will be given to the determination of the strange and the gluon content of the proton.
Experimental Collaboration ATLAS
Presenter: SUTTON, Mark (University of Sussex (GB)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 232 EPS-HEP 2017 / Report of Contributions Measurements of the production o …
Contribution ID: 294 Type: Parallel Talk
Measurements of the production of jets in association with a W or Z boson with the ATLAS detector Thursday, 6 July 2017 15:00 (15 minutes)
The production of jets in association with vector bosons is an important process to study pertur- bative QCD in a multi-scale environment. The ATLAS collaboration has performed new measure- ments of vector boson + jets cross sections, differential in several kinematic variables, in proton- proton collision data taken at center-of-mass energies of 8 TeV and 13 TeV. The measurements are compared to state-of-the art theory predictions. They are sensitive to higher-order pQCD effects, probe flavour and mass schemes and can be used to constrain the proton structure.
In addition, we present a new measurement of the splitting scales of the kt jet-clustering algorithm for final states containing a Z-boson candidate at a centre-of-mass energy of8TeV.
Experimental Collaboration ATLAS
Presenter: SHAN, Lianyou (Chinese Academy of Sciences (CN)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 233 EPS-HEP 2017 / Report of Contributions Measurement of jet production wi …
Contribution ID: 295 Type: Parallel Talk
Measurement of jet production with the ATLAS detector and extraction of the strong coupling constant Friday, 7 July 2017 10:00 (15 minutes)
The production of jets at hadron colliders provides a stringent test of perturbative QCDatthe highest energies. The process can also be used to probe the gluon density function of theproton. Specific topologies can be used to extract the strong coupling constant. The ATLAS collaboration has recently measured the inclusive jet production cross section indata collected at a center-of-mass energy of 8TeV and 13TeV. The measurements have been performed differentially in jet rapidity and transverse momentum. The collaboration also presents afirst measurement of the di-jet cross section at a center-of-mass energy of 13TeV as a function of the di- jet mass and rapidity. The results have been compared with state-of-the-art theory predictions at NLO in pQCD, interfaced with different parton distribution functions and can be used to constrain the proton structure.
We also present new measurements of transverse energy-energy correlations (TEEC) and their associated asymmetries (ATEEC) in multi-jet events at a center-of-mass energy of 8TeV. The data is unfolded to the particle level and compared to the expectations from parton shower Monte Carlo programs as well as from next-to-leading order perturbative QCD calculations. The latter are also used to extract the strong coupling constant and test the renormalization group equations.
Experimental Collaboration ATLAS
Presenter: SAWYER, Lee (Louisiana Tech University (US)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 234 EPS-HEP 2017 / Report of Contributions Measurement of photon productio …
Contribution ID: 296 Type: Parallel Talk
Measurement of photon production cross sections with the ATLAS detector Thursday, 6 July 2017 17:30 (15 minutes)
The production of prompt isolated photons at hadron colliders provides a stringent test of perturba- tive QCD and can be used to probe the proton structure. The ATLAS collaboration has performed precise measurements of the inclusive production of isolated prompt photons at a center-of-mass energy of 13 TeV, differential in both rapidity and the photon transverse momentum. In addition, the integrated and differential cross sections for isolated photon pairs at 8 TeV have been mea- sured. The results are compared with state-of-the-art theory predictions at NLO in QCD andwith predictions of several MC generators.
The production of prompt photons in association with jets provides an additional testing ground for perturbative QCD (pQCD) with a hard colourless probe less affected by hadronisation effects than jet production. The ATLAS collaboration has studied the dynamics of isolated-photon plus jet production in pp collisions at a centre-of-mass energy of 8 and 13 TeV, which will be presented and discussed.
Experimental Collaboration ATLAS
Presenter: TURRA, Ruggero (Università degli Studi e INFN Milano (IT)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 235 EPS-HEP 2017 / Report of Contributions Measurement of the bbar dijet cro …
Contribution ID: 299 Type: Poster Presentation
Measurement of the bbar dijet cross section in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of 7 TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2/fb. The cross section is measured for events with two identified b-jets with a transverse momentum pT > 20 GeV. At least one of the jets in the event is required to have pT > 270 GeV. The cross section is measured differentially as a function of dijet invariant mass, dijet transverse momentum, boost of the dijet system and the rapidity difference, azimuthal angle and angular distance between the b-jets. The results are compared to different predictions of leading order and next-to-leading orderper- turbative quantum chromodynamics matrix elements supplemented with models for parton-showers and hadronization.
Experimental Collaboration ATLAS
Presenter: VERDUCCI, Monica (Universita e INFN, Roma Tre (IT)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 236 EPS-HEP 2017 / Report of Contributions W/Z+jets and W/Z+HF-jets produ …
Contribution ID: 300 Type: Poster Presentation
W/Z+jets and W/Z+HF-jets production at ATLAS
The production of jets in association with a W or a Z boson in proton-proton collisions isanimpor- tant process to study QCD in multi-scale environments. Moreover, measurements of W/Z boson production associated with heavy- flavor (HF) quarks provide important experimental constraints to improve the theoretical description of these processes, as the uncertainties in the current pre- dictions are larger than the ones obtained in the inclusive case. The detailed knowledge of the production of jets associated with electroweak gauge bosons is also a key element for the under- standing of Higgs initiated processes and Beyond Standard Model searches, as they represent an important background in these measurements.
Results for the differential production cross sections for W/Z+jets and W/Z+HF-jets in several kinematics variables measured by the ATLAS in proton-proton collisions at cms energies of 7 and 13 TeV are presented and compared to high-order QCD calculations and recent Monte Carlo simulations.
Experimental Collaboration ATLAS
Presenter: VITTORI, Camilla (Universita e INFN, Bologna (IT)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 237 EPS-HEP 2017 / Report of Contributions First measurement of isolated- …
Contribution ID: 301 Type: Poster Presentation
First measurement of isolated-photon plus jet production in pp collisions at sqrt(s)=13 TeV with the ATLAS detector
The dynamics of isolated-photon plus jet production in pp collisions at sqrt(s) = 13 TeV werestudied with the ATLAS detector at the LHC using a dataset with an integrated luminosity of 3.2 /fb. The photons were reconstructed for photon transverse energies larger than 125 GeV. The jets were identified using the anti-kt algorithm with radius parameter R=0.4 and selected in therapidity range |y|<2.37 for transverse momenta pT >100 GeV. Measurements of isolated-photon plus jet cross sections are presented as functions of the photon transverse energy, the jet transverse momentum, the photon-jet invariant mass and the scattering angle in the photon-jet centre-of-mass system.
The leading-logarithm parton-shower predictions from SHERPA and PYTHIA as well as next-to- leading-order QCD calculations from JETPHOX are compared to the measurements.
Experimental Collaboration ATLAS
Presenter: CALLEA, Giuseppe (Universita della Calabria (IT)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 238 EPS-HEP 2017 / Report of Contributions The very high energy gamma-ray …
Contribution ID: 303 Type: Parallel Talk
The very high energy gamma-ray (and neutrino) Galactic Center diffuse emission Thursday, 6 July 2017 14:48 (18 minutes)
We present a novel interpretation of the gamma-ray diffuse emission in the Galactic Center (GC) and the Central Molecular Zone (CMZ) regions. This is based on a scenario assuming a harder scaling of the diffusion coefficient with rigidityinthe inner Galaxy so to reproduce the radial dependence of the cosmic-ray (CR) spectral index recently inferred from Fermi-LAT. We compare our model with H.E.S.S. and (for the fist time in this context) with PASS8 Fermi-LAT data which allows to cover the entire energy range from few GeV up to ~ 50 TeV and to infer the primary CR radial distribution above 100 GeV. We find that the bulk of the Galactic ridge emission can be naturally explained by the interaction of the diffuse, steady-state Galactic CR sea interacting with the gas present in the CMZ.Asa consequence, the evidence of a GC Pevatron is significantly weakened. We will also discuss the implications of our results for high energy neutrino astronomy.
Based on arXiv:1702.01124 (submitted to PRL) and 1504.00227 (published in ApJL)
Experimental Collaboration
Primary authors: GRASSO, Dario (INFN); GAGGERO, Daniele; MARINELLI, Antonio (I.N.F.N Pisa); TAOSO, Marco; URBANO, Alfredo Leonardo (CERN) Presenter: GRASSO, Dario (INFN) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 239 EPS-HEP 2017 / Report of Contributions Higgs measurement at Future Circ …
Contribution ID: 304 Type: Parallel Talk
Higgs measurement at Future Circular Collider Friday, 7 July 2017 15:30 (15 minutes)
After the Higgs boson discovery, the precision measurements and searches for new phenomena in the Higgs sector are among the most important goals in particle physics. Experiments at the Future Circular Colliders (FCC) are ideal to study these questions. Electron-positron collisions up to an energy of 350 GeV (FCC-ee) provide the ultimate precision with studies of Higgs boson couplings, mass, total width and CP parameters, as well as searches for exotic and invisible decays. The feasibility of observation of the s-channel production e+e- → H(125) is reviewed. We conclude by noting the remarkable complementarity of the FCC-ee and FCC-hh colliders, which in combination offer the best possible overall study of the Higgs boson properties.
Experimental Collaboration FCC-ee
Primary authors: AZZI, Patrizia (INFN Padova (IT)); KLUTE, Markus (Massachusetts Inst. of Technology (US)); BLONDEL, Alain (Universite de Geneve (CH)) Presenter: BEHR, Janna Katharina (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 240 EPS-HEP 2017 / Report of Contributions Electroweak Physics at the FCC-ee
Contribution ID: 305 Type: Parallel Talk
Electroweak Physics at the FCC-ee Saturday, 8 July 2017 12:45 (15 minutes)
The Future Circular Collider with electron-positron beams (FCC-ee) should provide improvements of the electroweak precision measurement concerning Z, W, H and their masses by a large factor over the present status. The unparalleled experimental precision would open, via Electroweak loop corrections, abroad discovery potential for new, at least weakly interacting particles up to high energy scales. The Z boson mass and width, as well as the Z → bb partial width, and the forward-backward asymmetries for leptons and quarks can be measured with high precision with the run at the Z pole, where the instantaneous luminosity is expected to be five to six orders of magnitude larger than LEP. As a result, a precise determination of the effective weak mixing angle, as well as of the running electromagnetic coupling αQED(mZ2) can be extracted directly from the data. At centre-of-mass energies around 160 GeV, corresponding to the WW production threshold, the W boson mass and width can be determined precisely with high-statistics cross section measurements at several energy points. The key breakthrough for this exceptional performance is the continuous beam energy determination by resonant depolarization of the beams. Considerable improvements of the strong coupling constant determination down to a precision of Δαs(mZ) ±0.0001 will be possible with the measurements of the hadronic widths of the Z and W bosons.
Experimental Collaboration FCC-ee
Presenters: LOCCI, Elizabeth (CEA/IRFU,Centre d’etude de Saclay Gif-sur-Yvette (FR)); Dr LOCCI, E. Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 241 EPS-HEP 2017 / Report of Contributions Top quark and electroweak physic …
Contribution ID: 306 Type: Parallel Talk
Top quark and electroweak physics at the FCC-hh Saturday, 8 July 2017 12:15 (15 minutes)
The future circular hadron-hadron collider FCC-hh is expected to produce collisions attheunri- valed center of mass energy of sqrt(s) = 100 TeV and to deliver an integrated luminosity of few tens of ab-1. As a result, trillions of top quarks and electroweak gauge bosons will be produced. Having at disposal such humongous samples opens a wide range of possibilities in the realm of electroweak and standard model precision measurements. Final states involving top quarks and heavy gauge bosons can for instance be studied in highly boosted kinematical regimes where the electroweak symmetry is effectively restored. In addition, in such regimes, otherwise non-accessible high di- mension operators can be strongly constrained since their contribution can receive substantial enhancements. Large statistics offer the possibility of studying very rare decays, including those that are sensitive to CP-violation. Finally, percent level precision on the top Yukawa coupling can be reached at the FCC-hh.
Experimental Collaboration FCC-hh
Primary author: SELVAGGI, Michele (CERN) Presenter: SELVAGGI, Michele (CERN) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 242 EPS-HEP 2017 / Report of Contributions SUSY searches at √s = 13 TeV with …
Contribution ID: 309 Type: Poster Presentation
SUSY searches at √s = 13 TeV with two same-sign leptons or three leptons, jets and ETmiss at the ATLAS detector - Background estimation and latest analysis results.
Supersymmetry (SUSY) is one of the most studied theories to extend the Standard Model (SM) beyond the electroweak scale. If R-parity is conserved, SUSY particles are produced in pairs and the lightest supersymmetric particle (LSP), which is typically the lightest neutrino chi_0^1, is stable. In many models the LSP can be a suitable candidate for dark matter. This poster presents a search for supersymmetric phenomena in final states with two leptons (electrons or muons) of thesame electric charge or three leptons, jets and missing transverse energy. While the same-sign or three leptons signature is present in many SUSY scenarios, SM processes leading to such events have very small cross-sections. Therefore, this analysis benefits from a small SM background inthe signal regions leading to a good sensitivity especially in SUSY scenarios with compressed mass spectra or in which the R-parity is not conserved. Except from the prompt production of same-sign lepton pairs or three leptons, the main sources for SM processes contami- nating the signal regions are fake or non-prompt leptons and electrons with mis-identified charge. While backgrounds originating from prompt lepton sources are estimated with simulated Monte Carlo events, the contribution from other sources is evaluated with data-driven techniques. In the ongoing Run 2, the search was performed with the full dataset recorded with the ATLAS detector during the year 2015 and 2016 corresponding to a total integrated luminosity of 36.1 fb −1. This poster will show the latest results interpreted in several simplified supersymmetric models featuring R-parity conservation and R-parity violation.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: TORNAMBE, Peter (Albert-Ludwigs-Universitaet Freiburg (DE)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 243 EPS-HEP 2017 / Report of Contributions Search for direct production of ele …
Contribution ID: 310 Type: Poster Presentation
Search for direct production of electroweakinos in multileptons final states at LHC Run 2 with the ATLAS detector
Supersymmetry is one of the most motivated Standard Model extensions. Despite the meticulous search during the LHC Run I, there is no evidence supporting this theory. Starting from 2015, LHC is performing a second data taking run with a higher center of mass energy (13 TeV), providing a great occasion for the search of beyond the Standard Model physics. New results obtained with the 2015-2016 ATLAS detector data will be presented. The direct production of electroweakinos, with two or three leptons in the final state and missing transverse momentum, is considered. In particular, an analysis targetting the slepton direct production with two leptons in the final state, will be illustrated. The key kinematic variables for the signal discrimination are the leptonic strans- verse mass and the leptons invariant mass. A good sensitivity is obtained in the signal region for sleptons masses beyond the Run 1 limits.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: CARRA, Sonia (Università degli Studi e INFN Milano (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 244 EPS-HEP 2017 / Report of Contributions Search for SUSY photonic signatur …
Contribution ID: 311 Type: Poster Presentation
Search for SUSY photonic signatures in 13 TeV pp collisions with the ATLAS detector.
A search for photonic signatures of various generalised models of gauge-mediated supersymme- try breaking is presented at proton–proton collisions at a centre-of-mass energy of 13 TeV. The results are based on an integrated luminosity of 36.1 fb-1 recorded by the ATLAS detector at the LHC. Different experimental signatures incorporating one or more isolated photon and significant missing transverse momentum are explored.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: ARDUH, Francisco Anuar (National University of La Plata (AR)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 245 EPS-HEP 2017 / Report of Contributions Search for gluinos and squarks in …
Contribution ID: 312 Type: Poster Presentation
Search for gluinos and squarks in events with one isolated lepton, at least√ 2-9 jets and missing transverse momentum at s = 13 TeV with the ATLAS detector
This poster presents the results of a search for gluinos and squarks in events with exactlyone lepton in the final state in addition to multiple jets and large missing transverse momentum. The analysed ATLAS data from 2015 and 2016 corresponds to an integrated luminosity of 36.1 fb−1 at a centre-of-mass energy of 13 TeV. In addition to previous publications the latest results contain a multijet channel, requiring at least 9 jets. To estimate the background in this regime a data- driven technique, based on the invariance of the transverse mass shape in events with different jet multiplicities, was developed. No significant excess was observed. The results are interpreted in a simplified model for 2-step gluino decays and a subset of the phenomenological minimal supersymmetric standard model (pMSSM).
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: HARTMANN, Nikolai (Ludwig-Maximilians-Univ. Muenchen (DE)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 246 EPS-HEP 2017 / Report of Contributions Results on Bs,d ->mumu decays an …
Contribution ID: 314 Type: Parallel Talk
Results on Bs,d ->mumu decays and measurement of P5’ and P1 parameters in B0->K* mu mu decay Thursday, 6 July 2017 11:45 (15 minutes)
Phenomena beyond the standard model (SM) can manifest themself indirectly, by affecting the production and decay of SM particles. The decay B0->K* mu mu is a flavor-changing neutral current (FCNC) process particularly sensitive, since it is heavily suppressed in the SM. Recent results from LHCb collaboration show a tension with respect SM prediction of more than 3 sigmas. We will present results of an angular analysis done by the CMS experiment at the LHC, using p-p data collected at sqrt(s)=8 TeV, corresponding to an integrated luminosity of L=20 fb^-1. The analysis is focused to measure the angular parameter P5’, as well as P1, as a function of the di- muons invariant mass.
Experimental Collaboration CMS
Presenter: LACAPRARA, Stefano (INFN sezione di Padova) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 247 EPS-HEP 2017 / Report of Contributions Recent diffractive and exclusive re …
Contribution ID: 315 Type: Parallel Talk
Recent diffractive and exclusive results from CMS Thursday, 6 July 2017 10:00 (15 minutes)
We present recent results of diffractive and exclusive measurements with the CMS experiment.
Experimental Collaboration CMS
Presenter: BYLINKIN, Aleksandr (Moscow Institute of Physics and Technology State University (RU) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 248 EPS-HEP 2017 / Report of Contributions Quantum groups as fundamental s…
Contribution ID: 316 Type: Poster Presentation
Quantum groups as fundamental symmetries
The role of quantum groups, a particular class of Hopf algebras, as describing the fundamental symmetries of the Standard Model is investigated. Using the quantum group SUq(3) as a flavour symmetry leads to exceptionally accurate baryon mass sum rules that agree perfectly with exper- imental data and magnetic moments that agree significantly better with experimental data. The consideration of quantum groups is the result of asking that physical theories respect anatural input-output symmetry between the observables and states of the theory. The language of Hopf algebras and quantum geometry allows for the observables and states to be treated on such an equal but dual footing.
The close relationship between quantum groups and invariants of knots allows for the possible description of elementary particles and their interactions as extended objects that carry topological information. Some ideas towards the development of such a model are presented.
Experimental Collaboration
Primary authors: Dr GRESNIGT, Niels (Xi’an Jiaotong-Liverpool University); Dr GILLARD, Adam (Xi’an Jiaotong-Liverpool University)
Presenter: Dr GRESNIGT, Niels (Xi’an Jiaotong-Liverpool University) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 249 EPS-HEP 2017 / Report of Contributions Light pseudoscalar mesons: an inv …
Contribution ID: 317 Type: Poster Presentation
Light pseudoscalar mesons: an inverse instantaneous Bethe–Salpeter glimpse
The consistent simultaneous interpretation of pions and kaons both as bound states of quarkand antiquark and as the (almost) massless boson states related, according to Goldstone’s theorem, to the dynamical (and explicit) breakdown of the chiral symmetries of QCD still represents a ma- jor challenge. Applying inversion to sufficiently simplified versions of the homogeneous Bethe– Salpeter equation, governing bound states in quantum field theory, enables us to get straightfor- wardly a qualitative idea of how the underlying effective interactions might look like.
Experimental Collaboration
Primary author: LUCHA, Wolfgang (Austrian Academy of Sciences) Presenter: LUCHA, Wolfgang (Austrian Academy of Sciences) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 250 EPS-HEP 2017 / Report of Contributions Dark matter searches at colliders
Contribution ID: 318 Type: Parallel Talk
Dark matter searches at colliders Thursday, 6 July 2017 14:30 (30 minutes)
A general overview of the landscape for WIMP and non-WIMP DM at colliders is presented, high- lighting new results but also showcasing the directions of the search program of the two general purpose experiments ATLAS and CMS towards the full Run-2 dataset.
Experimental Collaboration CMS and ATLAS
Primary author: YU, Shin-Shan Presenters: YU, Shin-Shan; YU, SHIN-SHAN (FERMILAB); YU, Shin-Shan (National Central Uni- versity (TW)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 251 EPS-HEP 2017 / Report of Contributions Critical study of a Pati-Salam model.
Contribution ID: 320 Type: Poster Presentation
Critical study of a Pati-Salam model.
One of the open questions in the Standard Model is what the origin for the mass hierarchy and mixing of fermions is. The question, the so called “flavor problem”, arises because in the lagrangian of the Standard Model the masses and mixing angles are completely arbitrary, their values are explained by ad hoc Yukawa couplings to fit the experimental data without giving a theoretical motivation that make us able to understand such numbers. A possible way to solve this problem is to use flavour symmetries and/or symmetries like GUT and/or of partial unification, in order to decrease the number of free parameters in the models. I will focus on a model of partial unification, in particular a Pati-Salam model based on the gauge group SU(4)⊗SU(2)L⊗SU(2)R, developed by M. P. Worah in the 90’s and maybe abandoned too early in favor of the more exotic SUSY theories. This model differs from others because of: fermions representations, the choice of the scalar multiplets, the use of singlet fermions and the fact that there are no mass couplings at renormalizable level, so that the distinction between the fermions masses comes from finite 1-loop contributions.
Experimental Collaboration
Primary authors: BARBENSI, Alessio (Università degli Studi Roma Tre); Dr MELONI, Davide (University of Roma Tre)
Presenter: BARBENSI, Alessio (Università degli Studi Roma Tre) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 252 EPS-HEP 2017 / Report of Contributions The role of theory input for exclus …
Contribution ID: 321 Type: Parallel Talk
The role of theory input for exclusive Vcb determinations Thursday, 6 July 2017 17:00 (15 minutes)
We present recent results on the extraction of Vcb from data on B->D^* l nu decays. Using two different parameterizations of form factors, we show how theory input from Heavy Quark Effective Theory or Light Cone Sum Rules affect the value of Vcb. The results show that the inconsistency of Vcb extractions in exclusive and inclusive decays needs a reappraisal.
Experimental Collaboration
Primary authors: SCHACHT, Stefan (INFN, Sezione di Torino and Universita di Torino); GAM- BINO, paolo (università di torino); BIGI, Dante (INFN, Sezione di Torino and Universita di Torino)
Presenter: SCHACHT, Stefan (INFN, Sezione di Torino and Universita di Torino) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 253 EPS-HEP 2017 / Report of Contributions Broken boost invariance in the Gla …
Contribution ID: 323 Type: Parallel Talk
Broken boost invariance in the Glasma via finite nuclei thickness Friday, 7 July 2017 11:45 (15 minutes)
I present our work on simulating the Glasma in the early stages of heavy ion collisions in a non- boost-invariant setting. Our simulation is based on the colored particle-in-cell method, whichis used to numerically solve the Yang-Mills equations in 3+1 dimensions. This approach allows us to describe colliding nuclei with finite longitudinal width by extending the McLerran-Venugopalan model to include a parameter for the Lorentz-contracted but finite extent of the nucleus in the beam direction. We determine the rapidity profile of the Glasma energy density, which shows strong deviations from the boost-invariant result. Varying the parameters both broad and narrow profiles can be produced. We find reasonable agreement when we compare the results to rapidity profiles of measured pion multiplicities from RHIC.
Experimental Collaboration
Primary authors: MUELLER, David (Vienna University of Technology); IPP, Andreas (TU Wien)
Presenter: MUELLER, David (Vienna University of Technology) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 254 EPS-HEP 2017 / Report of Contributions Charged Higgs production with a …
Contribution ID: 324 Type: Parallel Talk
Charged Higgs production with a W boson or a top quark Thursday, 6 July 2017 14:30 (15 minutes)
I present theoretical results for charged Higgs production in association with a W boson or a top quark at the LHC. I calculate higher-order threshold corrections and show that they are very significant. I present detailed results for total cross sections as well as transverse-momentum and rapidity distributions of the Higgs boson for various LHC energies.
Experimental Collaboration
Primary author: KIDONAKIS, Nikolaos (Kennesaw State University) Presenter: KIDONAKIS, Nikolaos (Kennesaw State University) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 255 EPS-HEP 2017 / Report of Contributions Measurement of fiducial and differ …
Contribution ID: 325 Type: Parallel Talk
Measurement of fiducial and differential cross sections of the SM Higgs boson in the diphoton and 4l decay channels using the ATLAS detector Friday, 7 July 2017 09:45 (15 minutes)
The latest results on the measurement of the fiducial and differential cross sections oftheHiggs boson in the diphoton and 4l decay channels with the ATLAS detector are presented, using ap- proximately 36 fb-1 of pp collision data collected at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: GABRIELLI, Andrea (Lawrence Berkeley National Lab. (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 256 EPS-HEP 2017 / Report of Contributions Measurement of the SM Higgs bos …
Contribution ID: 326 Type: Parallel Talk
Measurement of the SM Higgs boson mass in the diphoton and 4l decay channels using the ATLAS detector Thursday, 6 July 2017 09:45 (15 minutes)
One of the fundamental properties of the Higgs boson, it’s mass, is measured by way of studying the invariant mass of the 4l and diphoton decay channels with about 36fb-1 of data collected by the ATLAS experiments. Since in this channel the final state can be reconstructed as invariant mass peak with a good experimental resolution this measurement can be done in a model independent way and used as an input to compare other measurement properties with the SM predictions.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: POTAMIANOS, Karolos (DESY) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 257 EPS-HEP 2017 / Report of Contributions Measurement of the Higgs boson c …
Contribution ID: 327 Type: Parallel Talk
Measurement of the Higgs boson couplings and properties in the diphoton, ZZ and WW decay channels using the ATLAS detector Thursday, 6 July 2017 09:00 (15 minutes)
The latest results on the measurement of the Higgs boson couplings and properties in thediphoton, ZZ and WW decay channels with the ATLAS detector are presented, using approximately 36 fb-1 of pp collision data collected at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: GUPTA, Ruchi (Southern Methodist University (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 258 EPS-HEP 2017 / Report of Contributions Measurement of fermionic couplin …
Contribution ID: 328 Type: Parallel Talk
Measurement of fermionic couplings of the SM Higgs boson using the bb, tautau and mumu decay channels with the ATLAS detector Thursday, 6 July 2017 10:45 (15 minutes)
The latest results on the measurement of the cross sections and couplings of the Higgs bosoninthe fermionic decay channels to bb, tautau and mumu with the ATLAS detector are presented, using approximately 36 fb-1 of pp collision data collected at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: WANG, Song-Ming (Academia Sinica (TW)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 259 EPS-HEP 2017 / Report of Contributions Search for the SM Higgs boson in …
Contribution ID: 329 Type: Parallel Talk
Search for the SM Higgs boson in the ttH production channel using the ATLAS detector. Friday, 7 July 2017 12:00 (15 minutes)
The associated production of the Higgs boson with top quarks should allow the direct observation of the coupling of the Higgs boson to top quarks. The channel also benefits for a large cross- section increase between 8 and 13 TeV. ATLAS results in the search for the Higgs boson in the ttH production mode based on about 36fb-1 collected data will be presented.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: KATZY, Judith (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 260 EPS-HEP 2017 / Report of Contributions Determination of the Higgs boson …
Contribution ID: 330 Type: Parallel Talk
Determination of the Higgs boson properties with the ATLAS detector. Thursday, 6 July 2017 11:30 (15 minutes)
The results obtained from the different decay channels are combined to study the properties ofthe Higgs boson production and decay, and test the SM theoretical precision with increased accuracy, using about 36 fb-1 of p-p collisions data collected at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: VAZQUEZ SCHROEDER, Tamara (McGill University (CA)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 261 EPS-HEP 2017 / Report of Contributions Search for high mass bosonic reso …
Contribution ID: 331 Type: Parallel Talk
Search for high mass bosonic resonances with the ATLAS detector Thursday, 6 July 2017 15:30 (15 minutes)
Several theories beyond the Standard Model, like the EWS or 2HDM models, predict the existence of high mass Higgs particles, which could decay into final states with Weak bosons. In this pre- sentation the latest ATLAS results on these searches will be discussed, using about 36 fb-1 of p-p collisions at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: CARMINATI, Leonardo (Università degli Studi e INFN Milano (IT)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 262 EPS-HEP 2017 / Report of Contributions Search of a high mass neutral Hig …
Contribution ID: 332 Type: Parallel Talk
Search of a high mass neutral Higgs boson in fermion final states with the ATLAS detector. Thursday, 6 July 2017 12:30 (15 minutes)
Several theories, like the Minimal Supersymmetric Standard Model, predict a high mass neutral Higgs boson with a significant decay rate into the bb, mu-mu or tau-tau final states. Thesearch for a scalar resonance in fermion decay channels is presented, using about 36 fb-1 of p-p collisions at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: BARONE, Gaetano (Brandeis University (US)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 263 EPS-HEP 2017 / Report of Contributions Charged Higgs boson searches wit …
Contribution ID: 333 Type: Parallel Talk
Charged Higgs boson searches with the ATLAS detector Thursday, 6 July 2017 14:45 (15 minutes)
Several theories beyond the Standard Model, like the 2HDM, predict the existence of high mass charged Higgs particles. Such charged Higgs, produced in association with a top quark or in VBF, are searched for in several decay channels, using about 36 fb-1 of p-p collisions at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: BERGEAAS KUUTMANN, Elin (Uppsala University (SE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 264 EPS-HEP 2017 / Report of Contributions Search for di-Higgs production wi …
Contribution ID: 334 Type: Parallel Talk
Search for di-Higgs production with the ATLAS detector Friday, 7 July 2017 10:30 (15 minutes)
An enhanced production of two Higgs bosons would be a clear sign of beyond Standard Model physics. A search is performed for resonant and non-resonant excess production, including several decay channels of the two Higgs bosons. The analysis uses about 36 fb-1 of p-p collisions at13TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: DAVEY, Will (University of Bonn (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 265 EPS-HEP 2017 / Report of Contributions Search for non-standard, rare or in …
Contribution ID: 335 Type: Parallel Talk
Search for non-standard, rare or invisible decays of the Higgs boson with the ATLAS detector. Thursday, 6 July 2017 12:15 (15 minutes)
Some theories predict Lepton Flavour Violating decays of the Higgs boson, while other predict enhanced decay rates in rare modes like Z-photon, J/Psi-photon and Phi-photon or into invisible particles. Such decays are searched for using about 36 fb-1 of p-p collisions at 13 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: THOMPSON, Paul (University of Birmingham (GB)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 266 EPS-HEP 2017 / Report of Contributions Search for the decay of the Higgs …
Contribution ID: 336 Type: Parallel Talk
Search for the decay of the Higgs boson into two nMSSM pseudo-scalar particles. Friday, 7 July 2017 16:30 (15 minutes)
The next to MSSM theory predicts the existence of a light pseudoscalar boson “a”, and thedecay of the Higgs boson into a pair of such particles. This scheme is searched for in several final states relative to different decay modes of the “a” particle, using about 10 fb-1 of p-p collisions at13TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: JANUS, Michel (Georg-August-Universitaet Goettingen (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 267 EPS-HEP 2017 / Report of Contributions ATLAS Higgs and supersymmetry …
Contribution ID: 337 Type: Parallel Talk
ATLAS Higgs and supersymmetry physics prospects at the high luminosity LHC Thursday, 6 July 2017 17:45 (15 minutes)
The Higgs physics prospects at the high-luminosity LHC are presented, assuming anenergyof sqrt(s) = 14 TeV and a data sample of 3000-4000 fb-1. In particular, the ultimate precision attainable on the couplings measurements of the 125 GeV Higgs boson with SM fermions and bosons is discussed, as well as perspectives on the search for the Standard Model di-Higgs production, which could lead to the measurement of the Higgs boson self-coupling. Scenarios of SUSY sparticle production, among others, have been used as benchmark to drive the design of the component upgrades, and to evaluate the sensitivity of the upgraded accelerator and detector. This talk will also overview the expected sensitivity that the ATLAS experiment will have to SUSY sparticle production with 3000 fb-1 pf proton-proton collisions collected at a centre of mass energy of 14 TeV.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: VENTURI, Nicola (CERN) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 268 EPS-HEP 2017 / Report of Contributions The CMS ECAL Upgrade for Preci …
Contribution ID: 338 Type: Parallel Talk
The CMS ECAL Upgrade for Precision Crystal Calorimetry at the HL-LHC Friday, 7 July 2017 09:17 (17 minutes)
The electromagnetic calorimeter (ECAL) of the Compact Muon Solenoid Experiment (CMS) isop- erating at the Large Hadron Collider (LHC) with proton-proton collisions at 13 TeV center-of-mass energy and at a bunch spacing of 25 ns. Challenging running conditions for CMS are expected af- ter the High-Luminosity upgrade of the LHC (HL-LHC). We review the design and R&D studies for the CMS ECAL crystal calorimeter upgrade and present first test beam studies. Particular chal- lenges at HL-LHC are the harsh radiation environment, the increasing data rates and the extreme level of pile-up events, with up to 200 simultaneous proton-proton collisions. Precision timing can be exploited to reduce the effect of the pile-up. We report about the timing resolution studies per- formed with test-beams. We also report on the R&D for the new readout and trigger electronics, which must be upgraded due to the increased trigger and latency requirements at the HL-LHC.
Experimental Collaboration CMS
Primary author: MARINELLI, Nancy (University of Notre Dame (US)) Presenter: MARINELLI, Nancy (University of Notre Dame (US)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 269 EPS-HEP 2017 / Report of Contributions Performance of the CMS electrom …
Contribution ID: 339 Type: Poster Presentation
Performance of the CMS electromagnetic calorimeter in Run II and its role in the measurement of the Higgs boson properties
The characterisation of the Higgs boson discovered in 2012 around 125 GeV, and confirmed with the data collected in Run II, requires the precise determination of its mass, width and couplings. The electromagnetic calorimeter (ECAL) of the Compact Muon Solenoid Experiment (CMS) iscru- cial for measurements in the highest resolution channels, H->gamma gamma and H->4 leptons. In particular the energy resolution, the scale uncertainty and the position resolution for electrons and photons are required to be as good as possible. During Run II the LHC is continuously operating with 25ns bunch spacing and increasing instantaneous luminosity. The calorimeter reconstruc- tion algorithm has been adapted to cope with increasing levels of pile-up and the calibration and monitoring strategy have been optimized to maintain the excellent performance of the CMS ECAL throughout Run II. We show first performance results from the Run II data taking periods, achieved through energy calibrations using physics events, with a special emphasis on the impact on the measurement of the properties of the Higgs boson and on searches for new physics.
Experimental Collaboration CMS
Primary author: ORGANTINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)) Presenter: ORGANTINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 270 EPS-HEP 2017 / Report of Contributions The CMS electron and photon trig …
Contribution ID: 340 Type: Poster Presentation
The CMS electron and photon trigger for the LHC Run 2
The Compact Muon Solenoid (CMS) experiment implements a sophisticated two-level triggering system composed of the Level-1, instrumented by custom-design hardware boards, and a software High-Level-Trigger. A new Level-1 trigger architecture with improved performance is now being used to maintain the thresholds used in LHC Run I for the more challenging conditions experienced during Run II. We present the performance of the upgraded CMS electron and photon trigger in the context of Higgs boson decays into final states with photons and electrons. The calorimeter trigger system plays a central role in achieving the ambitious physics program of Run II. The upgraded trigger uses the full granularity of the calorimeters to optimally reconstruct the electromagnetic trigger objects. The performance of the new trigger system will be presented, based on proton- proton collision data collected in Run II. The selection techniques used to trigger efficiently on these benchmark analyses will be presented, along with the strategies employed to guarantee efficient triggering for new resonances and other new physics signals involving electron/photon final states.
Experimental Collaboration CMS
Primary author: BESCHI, Andrea (Universita & INFN, Milano-Bicocca (IT)) Presenter: BESCHI, Andrea (Universita & INFN, Milano-Bicocca (IT)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 271 EPS-HEP 2017 / Report of Contributions Concept of a low energy electron- …
Contribution ID: 341 Type: Poster Presentation
Concept of a low energy electron-positron collider for dimuonium study
We discuss a low energy +− collider for production of the not yet discovered µ+mu− bound state (dimuonium). In our design we follow the Brodsky-Lebed proposal of the large-crossing- angle +− intersection, when the dimuonium carries non-zero momentum and decays to +− pair far apart from the beam collision region. The latter provides effective suppression of the Bhabha scattering background. We study experimental constraints and following requirements forthe collider development. A preliminary layout is considered, the main parameters are obtained. The expected peak luminosity at the µ+mu− production threshold is 8 × 1031. The same machine can be used for high statistic study of hadronic processes (e+e− → π+pi−, π+pi−π0, π0γ etc.) and search for rare processes in the center-of-mass energy range below 960 MeV.
Experimental Collaboration
Primary authors: LEVICHEV, Evgeny (Budker Institute of Nuclear Physics (RU)); DRUZHININ, Vladimir (BINP/NSU, Novosibirsk)
Presenters: LEVICHEV, Evgeny (Budker Institute of Nuclear Physics (RU)); DRUZHININ, Vladimir (BINP/NSU, Novosibirsk); Dr BOGOMYAGKOV, Anton (Budker Institute of Nuclear Physics (RU))
Session Classification: Poster session
Track Classification: Accelerators for HEP
October 6, 2021 Page 272 EPS-HEP 2017 / Report of Contributions Search for Low Mass Dark Matter …
Contribution ID: 342 Type: Parallel Talk
Search for Low Mass Dark Matter Particles with the CRESST Experiment Thursday, 6 July 2017 10:00 (15 minutes)
It has been suggested by several astronomical observations that dark matter contributes 27 % to the overall energy density of our universe but no particle candidates have been observed yet. The CRESST experiment aims to directly detect dark matter particle elastically scattering off nuclei. The CRESST-II detector modules are based on CaWO4 crystals which are operated atmKtem- peratures. The nuclear recoil energy thresholds for the CRESST-II detectors Lise and TUM40 are 0.3 keV and 0.6 keV, respectively. Such low energy thresholds make CRESST ideally suited for the detection of low-mass dark matter particles. Further increase in sensitivity is expected with CRESST-III detectors aiming at a threshold of 0.1 keV. In this talk, we will present our results on the search for the dark matter obtained with the detector modules Lise and TUM40 of CRESST-II. An analysis conducted on the search for dark photons as dark matter candidates will be presented. We will discuss the status of CRESST-III Phase 1 which started taking data last year. In addition to the low threshold, radio purity of the crystals is another important factor for the detection of dark matter particles. To acquire a detailed understanding of the backgrounds measured bythe detectors, a Geant4 simulation of the electromagnetic backgrounds was carried out for the TUM40 detector module. The simulation includes backgrounds coming both from inside the crystal and from outside. The information taken from the background simulation will be vital for thesecond phase of the CRESST-III experiment.
Experimental Collaboration CRESST
Primary author: TURKOGLU, Cenk (Austrian Academy of Sciences (AT)) Presenter: TURKOGLU, Cenk (Austrian Academy of Sciences (AT)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 273 EPS-HEP 2017 / Report of Contributions The SiD Detector for the Internati …
Contribution ID: 343 Type: Parallel Talk
The SiD Detector for the International Linear Collider Saturday, 8 July 2017 11:30 (15 minutes)
The SiD Detector is one of two validated detector designs for the future International LinearCol- lider. SiD features a compact, cost-constrained design for precision Higgs and other measurements, and sensitivity to a wide range of possible new phenomena. A robust silicon vertex and tracking system, combined with a 5 Tesla central solenoidal field, provides excellent momentum resolution. The highly granular calorimeter system is optimized for Particle Flow application to achieve very good jet energy resolution over a wide range of energies. Details of the proposed implementation of the SiD subsystems, as driven by the physics requirements, will be given. Integration with the accelerator, the push-pull mechanism, and the detector assembly procedures at the Kitakami site will be described, together with the estimated timeline for construction in relation to the overall ILC Project.
Experimental Collaboration SiD Detector Consortium
Primary author: BARKLOW, Tim (SLAC National Accelerator Laboratory (US)) Presenter: BARKLOW, Tim (SLAC National Accelerator Laboratory (US)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 274 EPS-HEP 2017 / Report of Contributions Naturalness and light Higgsinos: …
Contribution ID: 344 Type: Parallel Talk
Naturalness and light Higgsinos: why ILC is the right machine for SUSY discovery Friday, 7 July 2017 17:15 (15 minutes)
Radiatively-driven natural Supersymmetry, a theoretically and experimentally well-motivated frame- work, centers around the predicted existence of four light, nearly mass-degenerate Higgsinos with mass ∼ 100 − 200 GeV (not too far above mZ ). Their small mass splittings of at most 20GeV implies very little visible energy of accompanying Standard Model particles decayed from heavier Higgsinos. Given that other SUSY particles are considerably heavy, this makes detection challeng- ing at√ hadron colliders. On the other hand, the clean environment of an electron-positron collider with s > 2mHiggsino would enable a decisive search of these required Higgsinos, and thus either the discovery or exclusion of natural SUSY. We present a detailed√ simulation study of precision measurements of Higgsino masses and production cross sections at s = 500 GeV of the proposed International Linear Collider currently under consideration for construction in Japan. The study is based on a Geant4 simulation of the International Large Detector concept. We examine several benchmark points just beyond the HL-LHC reach, with a mass spectrum containing four light Hig- gsinos directly accessible by the ILC, and the mass differences between the lightest SUSY particle and the heavier states ranging from about 4 to 20 GeV. It can be shown that their masses and pro- duction cross sections are able to be precisely measured to approximately 1% precision or better. These precise measurements allow for extracting the underlying weak scale SUSY parameters. The fitted parameters give predictions for the masses of heavier SUSY states, which provide motivation for future high-energy colliders. Additionally, dark matter properties may be derived. Evolution of the measured gaugino masses to high energies should allow one to distinguish the hypothesis of gaugino mass unification from other compelling possibilities such as mirage mediation.
Experimental Collaboration
Primary authors: Dr YAN, Jacqueline (KEK); Prof. LIST, Jenny (DESY); Dr BERGGREN, Mikael (DESY); Prof. BAER, Howard (Univ of Oklahoma); Dr TANABE, Tomohiko (Univ of Tokyo); Prof. FUJII, Keisuke (KEK)
Presenters: Ms LEHTINEN, Suvi-Leena (DESY); LEHTINEN, Suvi-Leena (DESY) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 275 EPS-HEP 2017 / Report of Contributions Heavy flavour in high-energy nucl …
Contribution ID: 346 Type: Parallel Talk
Heavy flavour in high-energy nuclear collisions: results of transport calculations Thursday, 6 July 2017 14:30 (30 minutes)
I will show how transport calculations, interfaced with a realistic hydrodynamic modeling of the background medium, allow one to provide predictions for momentum and angular distributions of heavy-flavour particles in high-energy nuclear collisions, to be compared eventually with exper- imental data (D/B-mesons and their decay products). The presence of a hot-deconfined medium (Quark-Gluon Plasma) in which the propagation (and final hadronization) of c and b quarks takes place leads to modifications of the final observables with respect to the proton-proton case. In my presentation I will focus on medium effects on transverse-momentum spectra (with low-pT particles pushed to moderate pT by the collective expansion of the medium and high-pT particles suffering energy-loss) and azimuthal distributions, the angular anisotropies (elliptic and triangu- lar) of final-state particles reflecting the initial geometric asymmetry of the system produced in the collision. I will also show first results of full 3+1 simulations, dropping the approximation of longitudinal boost-invariance and allowing for the study of observables at forward rapidity.
Experimental Collaboration
Primary authors: Dr BERAUDO, Andrea (INFN, sezione di Torino (IT)); Dr DE PACE, Arturo (INFN - Torino); NARDI, Marzia (Unknown); MONTENO, Marco (Universita e INFN Torino (IT)); PRINO, Francesco (Universita e INFN Torino (IT))
Presenter: Dr BERAUDO, Andrea (INFN, sezione di Torino (IT)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 276 EPS-HEP 2017 / Report of Contributions Results on production and decay of …
Contribution ID: 347 Type: Parallel Talk
Results on production and decay of B hadrons and onia and X(5568) state search in CMS Thursday, 6 July 2017 12:00 (15 minutes)
We present precise measurements of decay properties of hadrons containing a b quark performed on the data collected by the CMS experiment at LHC. The lifetime is among the fundamental prop- erties of particles and in heavy hadrons it is one of the important observables that allows to test the theoretical tools describing their physics. Some of the reported measurements are at the precision level of the world average for these properties. We report measurements of the differential cross sections and polarizations of B hadrons and quarkonium states. These are important tools to investigate heavy-quark production mechanisms in QCD. The dependences on transverse momentum, rapidity, and particle multiplicity are investi- gated. Comparisons with theory expectations and among different collision energies are provided. The evidence for an unexpected narrow Bs pi structure claimed by the D0 Collaboration andnamed X(5568) has triggered its search in other hadron collider experiments including CMS. Its interest resides in its possible interpretation as an hadronic state composed of four different quark flavours (udsb). The CMS search is performed using an integrated luminosity of 19.7fb^-1 of pp collisionsat sqrt(s)=8TeV and provides the current most stringent Upper Limits on the ratio of the production rates of X(5568) and Bs multiplied by the unknown branching fraction of the Bs pi decay, given in two different kinematic regions defined on the basis of the transverse momentum oftheBs.The obtained CMS upper Limits contradict the D0 measurement and are in agreement with the results by the LHCb Collaboration.
Experimental Collaboration CMS
Presenter: POLIKARPOV, Sergey (National Research Nuclear University MEPhI (RU)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 277 EPS-HEP 2017 / Report of Contributions Bs,d ->mumu decays @ 13 TeV
Contribution ID: 349 Type: Poster Presentation
Bs,d ->mumu decays @ 13 TeV
The features of B_d,s ->mumu decays are sensitive probes of physics beyond the Standard Model. This talk will review the results on these decays from the data collected by the CMS experiment in the second Run of LHC.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: CMS COLLABORATION Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 278 EPS-HEP 2017 / Report of Contributions Results from Borexino on solar and …
Contribution ID: 350 Type: Parallel Talk
Results from Borexino on solar and geo-neutrinos Thursday, 6 July 2017 11:30 (15 minutes)
The Borexino experiment is running at the “Laboratorio del Gran Sasso” in Italy since 2007.Its technical distinctive feature is the unprecedented ultralow background of the inner scintillating core, which is the basis of the outstanding achievements accumulated by the experiment. In this talk, after recalling the main features of the detector, the impressive solar data gatheredso far by Borexino will be summarized. Altogether, such measurements put Borexino in the unique situation of being the only detector able to perform solar neutrino spectroscopy over the entire solar spectrum; the counterpart of this peculiar status in the oscillation interpretation of the data is the capability of Borexino alone to perform the full validation across the solar energy range of the MSW-LMA paradigm. The recently released measurement of the time modulation of the detected neutrino signal induced by the Earth’s orbit eccentricity will be also reported. The talk will be concluded with an account of the Borexino accomplishments in the geo-neutrino field, marked by the detection of the geo-neutrino signal with a significance as high as5.9sigma.
Experimental Collaboration Borexino
Primary author: NICOLA , Rossi (LNGS) Presenter: NICOLA , Rossi (LNGS) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 279 EPS-HEP 2017 / Report of Contributions Physics potential of ATLAS upgra …
Contribution ID: 351 Type: Poster Presentation
Physics potential of ATLAS upgrades at HL-LHC
he High Luminosity-Large Hadron Collider (HL-LHC) is expected to start in 2026 and to provide an integrated luminosity of 3000 fb-1 in ten year, a factor 10 more than what will be collected by 2021. This high statistics will allow to perform precise measurements in the Higgs sector andimprove searches of new physics at the TeV scale. The luminosity needed is L ~7.5 1e34 cm-2 s-1, correspondent to ~200 additional proton-proton pile-up interactions. To face such harsh environment some sub-detectors of the ATLAS experiment will be upgraded or completely substituted. In this poster, the performances of the new or upgraded ATLAS sub-detectors will be described, focusing in particular on the new inner tracker and a proposed high granularity time device. The poster will also show the impact of those upgrades on crucial physics measurements forHL- LHC program.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: TESTA, Marianna (INFN e Laboratori Nazionali di Frascati (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 280 EPS-HEP 2017 / Report of Contributions UV properties of higher dimension …
Contribution ID: 352 Type: Parallel Talk
UV properties of higher dimensional operators in Higgs Effective Field Theories from hidden symmetries Saturday, 8 July 2017 09:00 (20 minutes)
We present a systematic approach to the classification of the UV properties of higher dimensional † † µ † † 3 † 4 operators spanned by Φ Φ and ordinary derivatives thereof (e.g. ∂µ(Φ Φ)∂ (Φ Φ), (Φ Φ) , (Φ Φ) ,... ) in Higgs Effective Field Theories. The procedure is purely algebraic and thus regularization-independent. It relies on a novel set of hidden symmetries that can be formulated in an extended field space where the singlet Φ†Φ is treated as a dynamical variable. The resulting relations stemming from such symmetries are valid to all orders in the loop expansion. Several applications to one-loop processes are considered.
Experimental Collaboration
Primary author: QUADRI, Andrea (INFN, Sez. di Milano) Presenter: QUADRI, Andrea (INFN, Sez. di Milano) Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 281 EPS-HEP 2017 / Report of Contributions Obtaining the optimal operating p …
Contribution ID: 353 Type: Poster Presentation
Obtaining the optimal operating point using receiver operating characteristics curve
The use and advantages of Receiver operating characteristic (ROC) curve for a binary classifica- tion is discussed in the context of a high energy physics classification problem. In particular, we look into the crucial task of obtaining the optimal cutoff or operating point using the curve fora multidimensional data and propose a novel method to obtain it. The results are illustrated using a standard SUSY data set.
Experimental Collaboration
Primary author: DIVAKARAN, Divya (Homi Bhabha National Institute) Presenter: DIVAKARAN, Divya (Homi Bhabha National Institute) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 282 EPS-HEP 2017 / Report of Contributions The Soft Muon Tagger for the iden…
Contribution ID: 356 Type: Poster Presentation
The Soft Muon Tagger for the identification of b-jets in ATLAS
b-tagging plays a fundamental role at LHC, as it helps in the identification of heavy particles that decay to bottom quarks, such as the top quark, Higgs boson or heavy exotic particles. TheSoft Muon Tagger (SMT) allows jets from b-quarks to be identified, taking advantage of the presence of a muon coming from semileptonic decays of b-hadrons. The development of this new b-tagger in ATLAS will be described, showing that, despite the low efficiency of the jet-muon association (based on the angular distance), the discriminating power of the associated muon variables is suf- ficient to reject light jets. An enhanced performance has been reached for all light jetrejection working points by adding the SMT output to the best performing multivariate b-tagger in ATLAS (MV2).
Experimental Collaboration ATLAS Collaboration
Presenter: SCIANDRA, Andrea (University of Bonn (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 283 EPS-HEP 2017 / Report of Contributions The secondary vertex finding algo …
Contribution ID: 357 Type: Poster Presentation
The secondary vertex finding algorithm with the ATLAS detector
The ability to identify jets with b-hadrons is essential for many physics analyses at theLHC.In ATLAS there are several algorithms available to tag jets induced by b-hadrons. These jets can be identified by the presence of secondary decay vertices, which are usually displaced fromthe primary vertex, due to the lifetime of b- and c-hadrons inside a jet. The secondary vertex find- ing algorithm uses the information of these secondary decay vertices and it features two modes of operation, looking for a single or several secondary vertices in a jet. The application of these modes depend on the physics problem. The algorithm yields a high performance: the rate ofre- constructing secondary vertices inside a b-jet is up to 80% for a single secondary vertex and up to 60% for more than one. The kinematic properties of the reconstructed vertices are propagated to several b-tagging algorithms used by ATLAS and their performance is compared. The poster will describe the algorithm and the information that can be exploited from reconstructing secondary vertices. The features and performance of the algorithm have been studied with simulated events at 13 TeV. The selected processes were chosen according to the mode of operation and the presence of high-pT jets.
Experimental Collaboration ATLAS Collaboration
Presenter: HEER, Sebastian (University of Bonn (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 284 EPS-HEP 2017 / Report of Contributions Deep Learning in Flavour Tagging …
Contribution ID: 358 Type: Poster Presentation
Deep Learning in Flavour Tagging at the ATLAS experiment
A novel higher-level flavour tagging algorithm called DL1 has been developed using a neural net- work at the ATLAS experiment at the CERN Large Hadron Collider. We have investigated the potential of Deep Learning in flavour tagging using higher-level inputs from lower-level physics- motivated taggers. A systematic grid search over architectures and the training hyperparameter space is presented. In this novel neural network approach, the jet flavours are treated on an equal footing while training with multiple output nodes, which provides a highly flexible tagger. The DL1 studies presented show that the obtained neural network improves discrimination against both light-jets and c-jets, and also provides a novel c-tagging possibility. The performance for arbitrary background mixtures can be fine-tuned after the training by using iso-efficiency linesof constant signal efficiency, according to the to the needs of the physics analysis. The resulting DL1 tagger is described and a detailed set of performance plots presented, obtained from simulated ttbar events at sqrt(s)=13 TeV and the Run-2 data taking conditions where this tagger will be applied.
Experimental Collaboration ATLAS Collaboration
Presenter: LANFERMANN, Marie (Universite de Geneve (CH)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 285 EPS-HEP 2017 / Report of Contributions Optimisation of the ATLAS b- …
Contribution ID: 359 Type: Poster Presentation
Optimisation of the ATLAS b-tagging algorithms for the 2017 LHC data-taking
The identification of b-quark initiated jets (b-tagging) is a fundamental tool for the physicsofAT- LAS. Such jets can be discriminated from those produced by the hadronization of light and charm quarks based on characteristic properties of B hadrons, such as the long lifetime and the hard frag- mentation function. The algorithms are based either on the identification of tracks displaced from the primary vertex or the reconstruction of secondary vertices. The final discriminant is provided by combining the information from several algorithms with a boosted decision tree. In prepara- tion for the 2017 data-taking campaign, several improvements have been made to the b-tagging in ATLAS. Two new taggers have been implemented, based on the presence of soft leptons inside jets, and on a Neural Network (NN) based on track parameters. In addition, a new training method- ology designed to optimize the performance at high jet pT has been developed and successfully deployed. An overall improvement of the performance over the full jet pT spectrum has been achieved.
Experimental Collaboration ATLAS Collaboration
Presenter: DI BELLO, Francesco Armando (Universite de Geneve (CH)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 286 EPS-HEP 2017 / Report of Contributions Calibration of the light jet mistag …
Contribution ID: 360 Type: Poster Presentation
Calibration of the light jet mistag rate of the ATLAS b-tagging algorithm
A variety of algorithms have been developed to distinguish b-quark jets from jets containing only lighter quarks within the ATLAS experiment at the Large Hadron Collider (LHC). We describe the measurement of the false positive rate, i.e. the efficiency for the identification of jets arising from light quarks or gluons, for the algorithm most commonly used in ATLAS data analyses during the LHC Run II. The measurement is based on the full data sample collected at a centre-of-mass energy of 13 TeV by the ATLAS detector during the year 2015 and 2016 and it is performed in various ranges of jet transverse momentum and pseudorapidity. The final efficiencies are extracted using two complementary methods that give compatible results. The first method is based ona data sample enriched in light-flavour jets whereas the second one is based on the propagation of the uncertainties in the track reconstruction performance to the flavour tagging discriminant in the detector simulation. The results are compared to the efficiencies predicted by the nominal simulation, and are used to calibrate the efficiency of selecting light-flavour jets in simulation.
Experimental Collaboration ATLAS Collaboration
Presenter: SAIMPERT, Matthias (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 287 EPS-HEP 2017 / Report of Contributions Upgrades and studies of aging of t …
Contribution ID: 361 Type: Parallel Talk
Upgrades and studies of aging of the CMS muon system in preparation of HL-LHC Saturday, 8 July 2017 12:45 (15 minutes)
The present CMS muon system operates three different detector types: in the barrel drifttubes (DT) and resistive plate chambers (RPC), along with cathode strip chambers (CSC) and another set of RPCs in the forward regions. In order to cope with increasingly challenging conditions various upgrades are planned to the trigger and muon systems. In view of the operating conditions at HL-LHC, it is vital to asses the detector performance for high luminosity. New irradiation tests had to be performed to ensure that the muon detectors will survive the harsher conditions and operate reliably. The new CERN GIF++ (Gamma Irradia- tion Facility) allowed to perform aging tests of these large muon detectors. We present results in terms of system performance under large backgrounds and after accumulating charge through an accelerated test to simulate the expected dose.
New detectors will be added to improve the performance in the critical forward region: large-area triple-foil gas electron multiplier (GEM) detectors will already be installed in LS2 in the pseudo- rapidity region 1.6 < eta < 2.15, aiming at suppressing the rate of background triggers while main- taining high trigger efficiency for low transverse momentum muons. For the HL-LHC operation the muon forward region should be enhanced with another large area GEM based station, called GE2/1, and with two new generation RPC stations, called RE3/1 and RE4/1, having low resistivity electrodes. These detectors will combine tracking and triggering capabilities and can stand particle rates up to few kHz/cm2. In addition to take advantage of the pixel tracking coverage extension a new detector, ME0 station, behind the new forward calorimeter, covering up to |η| = 2.8.
Experimental Collaboration CMS
Primary author: KORYTOV, Andrey (University of Florida (US)) Presenter: KORYTOV, Andrey (University of Florida (US)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 288 EPS-HEP 2017 / Report of Contributions Latest results on anisotropy flow o …
Contribution ID: 362 Type: Parallel Talk
Latest results on anisotropy flow of light and heavy flavors in PbPb collisions at CMS Friday, 7 July 2017 09:45 (15 minutes)
v v D0 The 2 and 3 anisotropy harmonics of charged particles and prompt meson are measured√ at |y|≤ 1 as a function of transverse momentum (pT ) and centrality classes in PbPb collisions at sNN = 5.02 TeV collected with the CMS detector. The results indicate that the charm quarks interact strongly with the QGP medium. Comparisons between theoretical predictions and data provide new constraints on the interaction between charm quarks and the QGP medium. Additionally, nonlinear response coefficients of higher-order anisotropy harmonics for charged particles are measured in PbPb collisions at 2.76 and 5.02 TeV. It is performed by comparing the higher order vn measured with respect to their own plane with the mixed harmonics. The results are compared with hydrodynamic predictions with different shear viscosity to entropy density ratios and initial conditions.
Experimental Collaboration CMS
Presenters: MILOSEVIC, Jovan (Vinca Institute of Nuclear Sciences (VINCA)); MILOSEVIC, Jovan (Physikalisches Institut); MILOSEVIC, Jovan (University of Belgrade (RS)); MILOSEVIC, Jovan (Uni- versity of Belgrade (RS)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 289 EPS-HEP 2017 / Report of Contributions Recent highlights from spin struct …
Contribution ID: 363 Type: Parallel Talk
Recent highlights from spin structure study of proton in PHENIX experiment at RHIC Friday, 7 July 2017 15:30 (15 minutes)
The Relativistic Heavy Ion Collider (RHIC) is a versatile machine that has provided collision be- tween a wide range of heavy ions, from d to Au, as well as p-p and p-nucleus collisions, over a range of collision energies. Polarized proton program at RHIC provides unique testing ground for the fundamental study of the proton’s spin structure. I will present the latest highlights from the PHENIX experiment addressing the longitudinal and the transverse spin structures of proton and some results from polarized proton and nucleus collisions.
Experimental Collaboration PHENIX
Primary author: Dr NAKAGAWA, Itaru (RIKEN) Presenter: Dr NAKAGAWA, Itaru (RIKEN) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 290 EPS-HEP 2017 / Report of Contributions Characteristic Energy Dependence …
Contribution ID: 364 Type: Parallel Talk
Characteristic Energy Dependence of Primary and Secondary Cosmic Rays measured with the AMS Detector on the Space Station Thursday, 6 July 2017 11:48 (18 minutes)
Precision study of cosmic nuclei provides detail knowledge on the origin and propagation of cosmic rays. In the past, results of different experiments often had large uncertainty and are different of each other. AMS was designed to measure and identify cosmic ray nuclei with seven independent detectors, thus it is able to provide precision studies of nuclei simultaneously to multi-TeV ener- gies. In 6 years on the Space Station, AMS has collected 100 billion both primary and secondary cosmic rays. Primary cosmic rays, such as p, He, C and O, are believed to be mainly produced and accelerated in supernova remnants, while secondary cosmic rays, such as Li, Be and B are thought to be produced by collisions of heavier nuclei with interstellar matter. The unique and distinct rigidity dependence of primary and secondary cosmic ray fluxes with charges Z=1 to Z=8 inthe GV to TV rigidity range will be presented. The characteristics of the disagreement of the AMS results with the predictions of the GALPROP model will also be presented for each nuclei.
Experimental Collaboration AMS
Primary author: FORMATO, Valerio Co-author: BERDUGO PEREZ, Javier (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Presenters: FORMATO, Valerio; FORMATO, Valerio; FORMATO, Valerio (Universita e INFN, Pe- rugia (IT)) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 291 EPS-HEP 2017 / Report of Contributions Measurement of anisotropies in co …
Contribution ID: 365 Type: Poster Presentation
Measurement of anisotropies in cosmic ray arrival directions with the AMS Detector on the Space Station
Analysis of anisotropies in the arrival directions of galactic protons, electrons and positrons has been performed by the AMS on the International Space Station. An absolute anisotropy measure- ment has been performed with protons, electrons and positrons. These, together with the results of the anisotropy analysis of the electron to proton, positron to proton, and the positron to electron ratios will be presented.
Experimental Collaboration AMS
Primary author: CASAUS, Jorge (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Co-author: VELASCO FRUTOS, Miguel Angel (Centro de Investigaciones Energéti cas Medioambi- entales y Tecno)
Presenter: VELASCO FRUTOS, Miguel Angel (Centro de Investigaciones Energéti cas Medioambi- entales y Tecno) Session Classification: Poster session
Track Classification: Astroparticle Physics
October 6, 2021 Page 292 EPS-HEP 2017 / Report of Contributions Intepreting extragalactic backgrou …
Contribution ID: 367 Type: Parallel Talk
Intepreting extragalactic backgrounds via angular cross-correlations Thursday, 6 July 2017 16:30 (28 minutes)
We will discuss methods and results concerning the angular cross-correlation between sky-maps of the extragalactic background radiation in different wavelength bands. The main goal of the study is to extract information on the clustering, redshift distribution and type of the unresolved non-thermal sources, especially at gamma-ray (and radio) frequencies. We will show how this technique can be used to search for “new” populations of sources, including the one possibly provided by annihilation or decay of particle dark matter.
Experimental Collaboration
Primary author: Dr REGIS, Marco (INFN - National Institute for Nuclear Physics) Presenter: Dr REGIS, Marco (INFN - National Institute for Nuclear Physics) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 293 EPS-HEP 2017 / Report of Contributions The DAMPE experiment: a probe …
Contribution ID: 369 Type: Parallel Talk
The DAMPE experiment: a probe for high energy cosmic-ray. Thursday, 6 July 2017 10:42 (18 minutes)
The DAMPE (DArk Matter Particle Explorer) satellite was launched on December 17, 2015 and it is taking data from more than 18 months. It is designed to probe the highest energy cosmic-ray accelerators and to study the nature of dark matter thanks to its excellent tracking and calorimetric performances in the measurements of electrons, gamma rays, protons and nuclei. A report on the mission goals and status will be given. The on-orbit detector performance will be also shown.
Experimental Collaboration DAMPE
Primary author: Dr FABIO, Gargano (INFN-Bari) Presenter: Dr FABIO, Gargano (INFN-Bari) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 294 EPS-HEP 2017 / Report of Contributions Jet evolution in a dense medium: …
Contribution ID: 370 Type: Parallel Talk
Jet evolution in a dense medium: event-by-event fluctuations and multi-particle correlations Friday, 7 July 2017 15:30 (15 minutes)
We study the gluon distribution produced via successive medium-induced branchings by an energetic jet propagating through a weakly-coupled quark-gluon plasma. We show that under suitable approximations, the jet evolution is a Markovian stochastic process, which is exactly solvable. For this process, we construct exact analytic solutions for all the n-point correlation functions describing the gluon distribution in the space of energy [1,2]. Using these results, we study the event-by-event distribution of the energy lost by the jet at large angles and of the multiplicities of the soft particles which carry this energy. We find that the event-by-event fluctuations arehuge: the standard deviation in the energy loss is parametrically as large as its mean value [1]. This has important consequences for the phenomenology of di-jet asymmetry in Pb+Pb collisions at the LHC: it implies that the fluctuations in the branching process can contribute to the measured asymmetry on an equal footing with the geometry of the di-jet event (i.e. as the difference between the in-medium path lengths of the two jets). We compute the higher moments of the multiplicity distribution and identify a remarkable regularity known as Koba-Nielsen-Olesen (KNO) scaling [2]. These predictions could be tested via event-by-event measurements of the di-jet asymmetry. References [1] Event-by-event fluctuations in the medium-induced jet evolution M. Escobedo, E. Iancu, e-Print: arXiv:1601.03629 [hep-ph], JHEP 1605 (2016) 008.
[2] Multi-particle correlations and KNO scaling in the medium-induced jet evolution M. Escobedo, E. Iancu, e-Print: arXiv:1609.06104 [hep-ph], JHEP 1612 (2016) 104.
Experimental Collaboration
Primary authors: Dr ESCOBEDO ESPINOSA, Miguel Ángel (University of Jyväskylä); Prof. IANCU, Edmond (Institut de Physique Théorique)
Presenter: Dr ESCOBEDO ESPINOSA, Miguel Ángel (University of Jyväskylä) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 295 EPS-HEP 2017 / Report of Contributions New physics searches with heavy …
Contribution ID: 371 Type: Parallel Talk
New physics searches with heavy flavour observables at ATLAS Thursday, 6 July 2017 12:45 (15 minutes)
New and recent results from the ATLAS programme of studies in EW physics with open beauty are presented. FCNC processes are sensitive to NP contributions, in particular through additional electroweak loop amplitudes. The angular analysis of the decay of Bd -> K* mu mu for anumber of angular coefficients are measured as a function of the invariant mass squared of thedi-muon system for data collected at 8 TeV. Comparison is made to theoretical predictions, including for the observable P’5, for which there has been recent tension between theory and experiment.
Experimental Collaboration ATLAS Collaboration
Presenter: DE SANCTIS, Umberto (INFN e Universita Roma Tor Vergata (IT)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 296 EPS-HEP 2017 / Report of Contributions Heavy flavour and Quarkonium pr…
Contribution ID: 372 Type: Parallel Talk
Heavy flavour and Quarkonium production in pp collisions at ATLAS Thursday, 6 July 2017 12:45 (15 minutes)
The latest results from ATLAS on heavy flavour and quarkonium production, including exotic states, are presented. This talk includes the measurement of B-hadron pair production, presented as a function of a variety kinematic variables between the two B-hadrons, providing important inputs to modelling of production via gluon splitting. Additional Insight into QCD models of quarkonium production and double parton scattering is also presented, through the production cross-section measurement of di-Jpsi and effective cross-section from double parton scattering.
Experimental Collaboration
Presenter: WALDER, James William (Lancaster University (GB)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 297 EPS-HEP 2017 / Report of Contributions The W and Z boson spin observabl …
Contribution ID: 374 Type: Parallel Talk
The W and Z boson spin observables as messengers of New Physics at LHC Friday, 7 July 2017 11:45 (15 minutes)
New Physics searches at colliders are usually conceived as the search of excesses in the number of events at a certain kinematic region. We emphasize that, whenever the process under study is mediated by a non-scalar particle, the final-state angular distribution has extra information related to the spin state of the mediator. We apply this idea to the W and Z bosons at LHC, showing that their eight spin observables carry precious infor- mation about their production mechanism which is able to discriminate new physics and standard models. The characterization of these spin properties, which is feasible at LHC from the angular distribution of the lepton channels in their decays, may thus act as a messenger from the hidden new physics process in the hadronic environment. We find the polarisation and alignment analisers in the different terms of the leptonic angulardis- tribution, providing the accessibility to the eight multipole parameters. Furthermore we establish a biunivocal correspondence between these different spin properties of the vector boson and definite asymme- tries or aplanarities. The power of this analysis is well illustrated with several new physics production mechanisms, and their comparison with the standard model, for processes such as:(i) W production from polarised top quark decays; (ii) W and Z bosons originating from the two-body decay of a heavy resonance; (iii) Z production plus jets; (iv) Z boson plus missing transverse energy.
Experimental Collaboration
Primary authors: Mr SEGARRA, Alejandro (IFIC); Prof. BERNABEU, José (IFIC) Presenter: Prof. BERNABEU, José (IFIC) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 298 EPS-HEP 2017 / Report of Contributions Update of the Global Electroweak …
Contribution ID: 375 Type: Parallel Talk
Update of the Global Electroweak Fit by Gfitter Thursday, 6 July 2017 11:45 (15 minutes)
We present the status of the global fit to electroweak precision data. The fit includes the latest avail- able hadron collider measurements of the top-quark and the W-boson masses, as well as newest higher-order theoretical calculations. A large set of numerical and graphical results as well as Stan- dard Model compatibility tests are presented. The global electroweak fit is also used to constrain models of new physics. Among these the Two-Higgs-Doublet model (2HDM) is studied in detail. The constraints on the various 2HDM types from the electroweak precision data are augmented by combining them with the latest Higgs boson coupling measurements and measurements of flavour physics observables.
Experimental Collaboration Gfitter Group
Primary authors: KOGLER, Roman (Hamburg University (DE)); PEIFFER, Thomas (Hamburg University (DE))
Presenters: KOGLER, Roman (Hamburg University (DE)); PEIFFER, Thomas (Hamburg University (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 299 EPS-HEP 2017 / Report of Contributions Search for displaced lepton-jets wi …
Contribution ID: 376 Type: Poster Presentation
Search for displaced lepton-jets with the ATLAS experiment
Several possible extensions of the Standard Model predict the existence of a dark sector that is weakly coupled to the visible one: i.e. the two sectors couple via the vector portal, where a dark photon with mass in the MeV to GeV range mixes kinetically with the SM photon. If the dark photon is the lightest state in the dark sector, it will decay to SM particles, mainly to leptons and possibly light mesons. Due to its weak interactions with the SM, it can have a non-negligible lifetime. At the LHC, these dark photons would typically be produced with large boost resulting in collimated jet-like structures containing pairs of leptons and/or light hadrons, the so-called lepton-jets (LJs). This work is focused on the search for “displaced LJs”, which are produced away from thein- teraction point and their constituents are limited to electrons, muons, and pions. The requested topology includes one or two LJs + leptons/jets/MET. The most recent ATLAS results based on samples collected at a center of mass energy of 13 TeV will be presented.
Results are interpreted in terms of the Falkowsky-Ruderman-Volansky-Zupan models where dark photons are generated through the decay of a Higgs boson to intermediate hidden fermions. The Higgs boson is supposed to be produced via gluon-fusion and for the first time, results are also presented in terms of the associated production of a Higgs boson with a W/Z and in the context of inelastic thermal relic dark matter.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: DEL GAUDIO, Michela (Universita della Calabria (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 300 EPS-HEP 2017 / Report of Contributions Search for resonances with boson- …
Contribution ID: 377 Type: Poster Presentation
Search for resonances√ with boson-tagged jets in pp collisions at s = 13 TeV collected with the ATLAS detector
Narrow resonances decaying into WW , WZ or ZZ boson pairs are searched for −1 √in 37.1 fb of proton-proton data at a centre-of-mass energy of s = 13TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. The diboson system is reconstructed using pairs of high-pT large radius jets tagged as compatible with the boosted hadronic decay of a W or a Z boson, using jet mass and substructure properties. The search covers diboson resonances with masses in the range 1.1 ≤ mVV ≤ 4.0 TeV. Exclusion limits are set at the 95\% confidence level on the production cross section times branching ratio to VV on a range of beyond the Standard Model theories.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: MEADOWS, Zachary Alden (University of Massachusetts (US)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 301 EPS-HEP 2017 / Report of Contributions Improved search for dark matter p …
Contribution ID: 378 Type: Poster Presentation
Improved search for dark matter produced in association with a hadronically decaying vector boson with the ATLAS detector
Abstract: We present a search for dark matter particles produced in association with a hadronically decaying W or Z boson. The analysis is performed with 36.5/fb of proton-proton collision data at a centre-of-mass energy of13TeV recorded by the ATLAS detector at the Large Hadron Collider. With the full 13 TeV dataset and an increased signal acceptance, this result significantly improves over previous ATLAS searches in the same final state. In the search we do not observe any significant excess over the Standard Model prediction. The search results are interpreted in terms of an effective field theory and a simplified vector-mediator model describing dark matter interactions with Standard Model particles.
Experimental Collaboration ATLAS
Presenter: LOU, Xuanhong (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Poster session
Track Classification: Dark Matter
October 6, 2021 Page 302 EPS-HEP 2017 / Report of Contributions Search for Dark Matter Produced i …
Contribution ID: 379 Type: Poster Presentation
Search for Dark Matter Produced in Association with the Standard√ Model Higgs Boson Decaying to b¯b at s = 13 TeV with the ATLAS Detector
The existence of Dark Matter is inferred from several astrophysical and cosmological observations. Several extensions of the Standard Model accommodating Dark Matter constraints predict associated production of Dark Matter particles with the Standard Model Higgs boson. Such models are searched for in final states with large missing transverse momentum and a Higgs boson decaying to a pair of b-quarks with the ATLAS detector using 36.1 fb−1 of pp collisions at a center-of-mass energy of 13 TeV at the LHC. An optimized selection together with an improved Higgs boson identification in boosted topologies leads to a significant improvement in sensitivity compared to previous searches. The observed data are in good agreement with the Standard Model predictions. Thus, limits are placed on the production cross-section of Dark Matter particles with a Higgs boson for a simplified model with twoHiggs doublets and a heavy vector mediator. In addition, stringent model-independent limits are placed on the production cross-section of non-SM events at detector level which can be reinterpreted in the context of a wider range of theoretical models for the production of this signature. Speaker (not yet registered): Rainer Roehrig
Experimental Collaboration ATLAS
Presenter: Mr ROHRIG, Rainer (Max-Planck-Institut fur Physik (DE)) Session Classification: Poster session
Track Classification: Dark Matter
October 6, 2021 Page 303 EPS-HEP 2017 / Report of Contributions Search for high-mass resonant phe …
Contribution ID: 380 Type: Poster Presentation
Search for high-mass resonant phenomena with same-charge√ lepton pairs in the final state using pp collisions at s=13 TeV with the ATLAS detector at the LHC
A search for new high mass resonances which decay to two high-pT leptons with same-sign charge is presented. The results reported here use the \textit{pp} collision data sample corresponding to 36.5 fb−1 of integrated luminosity collected in 2015 and 2016 by the ATLAS detector at the LHC with a centre-of-mass energy of 13 TeV. The search considers the pair production ofa doubly charged Higgs boson via the Drell-Yan process as a benchmark model where the decay mode is assumed to be exclusively into leptons. A model independent search will also be performed on distinct event categories, defined by the number of same-sign lepton pairs. This search will focus on signal regions definition and on the strategy for the estimation of the main backgrounds: mis-identified (fake) prompt leptons, originating from either hadronic jetsor secondary weak hadron decays, and electrons with mis-identified charge. The search will be performed in all light lepton flavor channels, allowing also the doubly charged Higgs to decay to mixed lepton flavor final states via lepton number violation. A limit on the mass of the doubly charged Higgs boson, for both left-handed and right-handed particle states, will be set.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: UCCHIELLI, Giulia (Universita e INFN, Bologna (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 304 EPS-HEP 2017 / Report of Contributions Search for new phenomena in ttbar …
Contribution ID: 381 Type: Poster Presentation
Search for new phenomena in ttbar + heavy-flavour jets at √s =13 TeV with the ATLAS detector
A search for new phenomena in ttbar final states with additional heavy-flavour jets has been carried out using 36.1 fb-1 data of pp collisions at sqrt(s) =13 TeV with the ATLAS detector at the LHC. The search targets a variety of signals, including the pair production of a vector-like top quark; four-top-quark production in several new physics scenarios. Data are analysed in the lepton-plus-jets final state as well as the jets-plus-ETmiss final state.The search exploits the high multiplicity of b-jets, the high scalar sum of transverse momenta of all final state objects, and the presence of boosted hadronically-decaying resonances reconstructed as large-radius jets, characteristic of signal events.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: YAMAGUCHI, Daiki (Tokyo Institute of Technology (JP)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 305 EPS-HEP 2017 / Report of Contributions Exotic diboson searches in the lνqq …
Contribution ID: 382 Type: Poster Presentation
Exotic diboson searches in the lνqq final state using data at √s = 13 T eV collected with the ATLAS detector
Analyses searching for diboson resonances are very powerful tools to investigate many beyond the Standard Model (BSM) scenarios such as extension of the Higgs sector, Heavy Vector triplets (W’ and Z’) or excited states of Gravitons. These searches exploit the many decay channels of the two bosons allowing to select topologies with varied signal to background ratios and statistics. Among these searches the search for WW/WZ in the semileptonic final state finds a compromise between the high signal statistics allowed by thehigh branching ratio of the hadronic decay of the gauge boson while profiting of the good trigger and analysis signature of the lepton, decay product of the second gauge boson. The WW/WZ search for TeV scale resonances in the lν qqchannel will be detailed, explaining the current boson-tagging techniques and the signal categorization used to improve sensitivity. The limit presently set in the various scenarios using 2015-2016 dataset will be reported.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: BIESUZ, Nicolo Vladi (INFN Sezione di Pisa, Universita’ e Scuola Normale Superiore, P) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 306 EPS-HEP 2017 / Report of Contributions Search for heavy Higgs bosons …
Contribution ID: 383 Type: Poster Presentation
Search for heavy Higgs bosons √A/H decaying to a top-quark pair in pp collisions at s = 8~TeV with the ATLAS detector
A search for heavy pseudoscalar (A) and scalar (H) Higgs bosons decaying into a top-quark pair (tt¯) has been performed in 20.3~fb−1 of data collected by the ATLAS experiment at the Large √Hadron Collider in proton–proton collisions at a center-of-mass energy of s = 8~TeV. No significant deviation from the Standard Model expectation is observed in the tt¯invariant mass spectrum in final states with an electron or muon, large missing transverse momentum, and at least four jets. The results are interpreted in the context of a type-II Two-Higgs-Doublet Model in the alignment limit. Interference effects between the signal process and Standard Model tt¯production, which are expected to distort the signal shape from a single peak to a peak-dip structure, are taken into account. Exclusion limits on the signal strength
µ are derived as a function of the mass mA/H and the ratio of the vacuum expectation values of the two Higgs fields, tan β.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: BEHR, Janna Katharina (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 307 EPS-HEP 2017 / Report of Contributions Search for Dark Matter in events w …
Contribution ID: 387 Type: Poster Presentation
Search for Dark Matter in events with heavy quarks and missing transverse energy with the ATLAS detector
A wide search program is being carried on at the LHC under the hypothesis that Dark Matter (DM) consist of weakly interacting massive particles (WIMPs). Final states with heavy flavour quarks and large momentum imbalance represent an interesting discovery signature which allows to probe models with scalar or pseudoscalar interactions between the Standard Model and the Dark Sector under the assumption of Minimal Flavour Violation. We will present the most recent results of searches for DM produced in association with a pair of heavy flavour quarks (DM+HF) in ATLAS based on 36.1 fb-1 of proton-proton collision data collected at a centre of mass energy of 13 TeV
Experimental Collaboration ATLAS
Presenter: AFIK, Yoav (Technion (IL)) Session Classification: Poster session
Track Classification: Dark Matter
October 6, 2021 Page 308 EPS-HEP 2017 / Report of Contributions Radiation enhancement and “temp …
Contribution ID: 388 Type: Parallel Talk
Radiation enhancement and “temperature” in the collapse regime of gravitational scattering Saturday, 8 July 2017 11:30 (20 minutes)
We generalize the semiclassical treatment of graviton√ radiation to gravitational scattering at very large energies s ≫ mP and finite scattering angles Θs, so as to approach√ the collapse regime of impact parameters b ≃ bc ∼ R ≡ 2G s. Our basic tool is the extension of the recently proposed, unified form of radiation to the string-based ACV reduced-action model and to its resummed-eikonal exchange. By superimposing that radiation all-over eikonal scattering, we are able to derive the corresponding (unitary) coherent-state operator. The resulting graviton spectrum, tuned on the gravitational radius R, fully agrees with previous calculations for small angles Θs ≪ 1 but, for sizeable angles Θs(b) ≤ Θc = O(1) acquires an exponential cutoff of the large ωR region, due to energy conservation, so as to emit a finite fraction of the total energy. In the approach-to-collapse regime of → + b bc we find a radiation enhancement due to large tidal forces, so that the whole energy is radiated off, with a large multiplicity ⟨N⟩ ∼ Gs ≫ 1 and a well-defined frequency cutoff of order R−1. The latter corresponds√ to the Hawking temperature for a black holeofmass notably smaller than s. I shall also show preliminary results for collisions below the critical impact parameter (b < bc) where a classical collapse is expected, but a quantum-mechanical mechanism can avoid or reduce information loss.
Experimental Collaboration
Primary authors: COLFERAI, Dimitri; CIAFALONI, Marcello (Dipartimento di Fisica) Presenter: COLFERAI, Dimitri Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 309 EPS-HEP 2017 / Report of Contributions Predictions for production and dec …
Contribution ID: 389 Type: Parallel Talk
Predictions for production and decay of the pseudoscalar glueball from the Witten-Sakai-Sugimoto model Saturday, 8 July 2017 10:40 (20 minutes)
The top-down holographic Witten-Sakai-Sugimoto model for low-energy QCD, augmented byfi- nite quark masses, has recently been found to be able to reproduce the decay pattern of the scalar glueball candidate f0(1710) on a quantitative level. We show that this model predicts a narrow pseudoscalar glueball heavier than the scalar glueball and with a very restricted decay pattern in- volving eta or eta’ mesons. Production should be either in pairs or in association with eta(’) mesons. We discuss the prospect of discovery in high-energy hadron collider experiments through central exclusive production by comparing with eta’ pair production.
Experimental Collaboration
Primary authors: Prof. REBHAN, Anton (Vienna University of Technology); Mr BRÜNNER, Frederic (TU Wien)
Presenter: Prof. REBHAN, Anton (Vienna University of Technology) Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 310 EPS-HEP 2017 / Report of Contributions SMASH: A new transport approac …
Contribution ID: 391 Type: Parallel Talk
SMASH: A new transport approach for FAIR energies Thursday, 6 July 2017 12:45 (15 minutes)
The microscopic description of heavy-ion reactions at low beam energies is achieved within hadronic transport approaches. In this talk a new approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons) is introduced, verified, and applied to study particle production at EKin = 0.4 - 2 A GeV in Au+Au collisions. First SMASH results for strangeness production are presented. Finally, an extension of SMASH with forced canonical thermalization in the high-density regions is demonstrated. This extension effectively accounts for many-particle collisions.
Experimental Collaboration
Primary authors: Mr OLIINYCHENKO, Dmytro (Frankfurt Institute for Advanced Studies); Mr STEINBERG, Vinzent (Frankfurt Institute for Advanced Studies); Prof. PETERSEN, Hannah (Frankfurt Institute for Advanced Studies)
Presenter: Mr OLIINYCHENKO, Dmytro (Frankfurt Institute for Advanced Studies) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 311 EPS-HEP 2017 / Report of Contributions Topological b-hadron decay recon …
Contribution ID: 392 Type: Poster Presentation
Topological b-hadron decay reconstruction and application for heavy-flavour jet tagging in ATLAS
The identification of jets originating from the hadronisation of heavy-flavour quarks represents a key ingredient in the physics program of the ATLAS experiment. Exploiting the topological structure of weak b- and c-hadron decays, the multi-vertex finder algorithm - JetFitter - tries to reconstruct the full b-hadron decay chain inside b-jets and provides a complementary approach to conventional secondary vertex finder algorithms. Based on the hypothesis that the primary and displaced b- and c-hadron decay vertices lie on a common line approximating the b-hadron flight direction, an extension of the Kalman Filter formalism for vertex reconstruction implemented in JetFitter allows to solve this pattern recognition problem. Detailed information on therecon- structed decay cascades is then used to identify and discriminate heavy-flavour jets. This poster presents the principle of this algorithm and its performance in the context of a recent optimization campaign performed in view of the 2017 LHC data-taking by the ATLAS detector.
Experimental Collaboration ATLAS Collaboration
Presenter: GILLES, Geoffrey (Bergische Universitaet Wuppertal (DE)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 312 EPS-HEP 2017 / Report of Contributions Calibration of the ATLAS b- …
Contribution ID: 393 Type: Poster Presentation
Calibration of the ATLAS b-tagging algorithm in dense jet environments
The calibration of the ATLAS b-tagging algorithm in environments characterised by large jetmul- tiplicity is presented. The calibration uses reconstructed ttbar candidate events collected bythe ATLAS detector in proton-proton collisions at 13 TeV, with a final state containing one charged lep- ton, missing transverse momentum and at least four jets. The b-tagging efficiencies are measured not only as a function of the most relevant kinematic quantities, such as the transverse momentum or the pseudo-rapidity of the jets, but also as a function of quantities that are sensitive to close-by jet activity. The results extend the regions in which it is possible to extract data-to-simulation b-tagging scale factors, compared to b-tagging calibrations based on dileptonic ttbar events.
Experimental Collaboration ATLAS Collaboration
Presenter: LA RUFFA, Francesco (Universita della Calabria (IT)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 313 EPS-HEP 2017 / Report of Contributions Anarchy and Neutrino Physics
Contribution ID: 394 Type: Poster Presentation
Anarchy and Neutrino Physics
The anarchy principle leading to the seesaw ensemble is studied analytically with the usual tools of random matrix theory. The probability density function for the seesaw ensemble of N × N matrices is obtained in terms of a multidimensional integral. This probability density functions is then used to extract information on the relevant physical parameters of the neutrino sector of a seesaw-extended Standard Model. For N = 2 and N = 3, the distributions of the light neutrino masses, as well as the mixing angles and phases, are obtained using numeri- cal integration methods. A systematic comparison with the much simpler type II seesaw ensemble is also performed to point out the fundamental differences between the two ensembles. It is found that the type I-III seesaw ensemble is better suited to accommodate experimental data. Moreover, the results indi- cate a strong preference for the mass splitting associated to normal hierarchy. However, because of the decoupling of the probability density function for the light neutrino masses and the neutrino mixings, which implies no correlation between the neutrino mass eigenstates and the neutrino mixing matrix, every permutations of the singular values are found to be equally probable for a par- ticular mass splitting. This leads to a loss of predictive power when comparing with observations as predictions regarding the hierarchy of the mass spectrum remains out of reach in the framework of anarchy.
Experimental Collaboration
Primary authors: MARLEAU, Luc (Université Laval); FORTIN, Jean-François (Université Laval); GI- ASSON, Nicolas (Université Laval)
Presenter: MARLEAU, Luc (Université Laval) Session Classification: Poster session
Track Classification: Neutrino Physics
October 6, 2021 Page 314 EPS-HEP 2017 / Report of Contributions Gender inclusive teaching. An exp …
Contribution ID: 395 Type: Parallel Talk
Gender inclusive teaching. An experiment conducted at the CERN International High School Teacher Programme. First lessons learnt. Friday, 7 July 2017 16:30 (15 minutes)
Educational research has shown that girls are less likely than boys to take up science subjects in high school, in western countries, as shown e.g. by a UK study by the Institute of Physics. This has repercussions on professional choices made later. For some years now CERN drives a variety of communication, education and outreach activities to encourage girls to take science subjects in school and women to enter in the field of STEM: through social media, presentations at schools and universities, and also through educational programmes. More recently, CERN launched a raising-awareness initiative targeting high school teachers. A work group on gender inclusive teaching was introduced at the yearly CERN International High School Teachers programme. The aim of the work group is to explore, in a collaborative manner, with teachers from all around the world, and under the guidance of a researcher from the University of Geneva, aspects that may play a role in this gender imbalance early on at school. The underlying assumption is that, while most teachers have been trained to be teachers, inclusive teaching was not part of their curriculum.
The presentation will report on the 2016 work group, why and how it was set up, its limitsand future. Sharing experience, addressing stereotypes reproduced in physics classes and other aspects that may influence students’ motivation were part of the group work. Teachers discussed, based on research findings and expert opinions, actions they can take to facilitate a gender inclusive classroom. The group was able to produce a document with recommendations that includethe limitations set by the cultural diversity within the group and differences in national systems of education.
Experimental Collaboration
Primary authors: GUINOT, Genevieve (CERN); Ms KALTENHÄUSER , Kristin (IT University Copenhagen)
Presenter: Ms KALTENHÄUSER , Kristin (IT University Copenhagen) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 315 EPS-HEP 2017 / Report of Contributions Construction and commissioning o …
Contribution ID: 397 Type: Parallel Talk
Construction and commissioning of the Phase I upgrade of the CMS pixel detector Thursday, 6 July 2017 09:15 (15 minutes)
The Phase I upgrade of the CMS pixel detector, installed by the CMS collaboration during there- cent extended end-of-year technical stop, is built out of four barrel layers (BPIX) and three forward disks in each endcap (FPIX). It comprises a total of 124M pixel channels, in 1,856 modules and it is designed to withstand instantaneous luminosities of up to 2 x 10^34 cm-2 s-1 with increased detector acceptance and additional redundancy for the tracking, while at the same time reducing the material budget. These goals are achieved using a new readout chip and modified powering and readout schemes, one additional tracking layer both in the barrel and in the disks, and new detector supports includ- ing a CO2 based evaporative cooling system. Different parts of the detector have been assembled over the last year and later brought toCERN for installation inside the CMS tracker. At various stages during the assembly tests have been per- formed to ensure that the readout and power electronics, and the cooling system meet the design specifications. After tests of the individual components, system tests have been performed before the installation inside CMS. This contribution will review the design and technological choices of the Phase I detector,with a focus on the challenges and difficulties encountered, and present results from system tests and from the final commissioning of the detector in-situ using the central CMS DAQ system.
Experimental Collaboration CMS
Primary author: BARTEK, Rachel (Catholic Unversity of America) Presenter: BARTEK, Rachel (Catholic Unversity of America) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 316 EPS-HEP 2017 / Report of Contributions The Fine-tuning of the Minimal Su…
Contribution ID: 399 Type: Parallel Talk
The Fine-tuning of the Minimal Supersymmetric Standard Model: Constraints by the LHC, Future Colliders and Dark Matter searches Friday, 7 July 2017 17:30 (15 minutes)
We evaluate the fine-tuning of the phenomenological minimal supersymmetric standard model (pMSSM). We show that the fine-tuning of the pMSSM is not large yet, nor under pressure byLHC searches. We also determine GUT scale models with the same low fine-tuning. Low sbottom, stop and gluino masses turn out to be less relevant for low fine-tuning thancom- monly assumed. Fine-tuning arguments point to models with a dark matter candidate yielding the correct dark matter relic density: a bino-higgsino particle with a mass of 35−155 GeV. Weshow how upcoming searches at the LHC , with Dark Matter detection experiments and at future col- liders will constrain the fine-tuning of the MSSM. In addition we briefly discuss the relevanceof Machine Learning in recasting LHC limits (SUSY-AI project).
Experimental Collaboration
Primary authors: CARON, Sascha (Nikhef National institute for subatomic physics (NL)); VAN BEEKVELD, Melissa Corona (Nikhef National institute for subatomic physics (NL)); RUIZ DE AUSTRI, Roberto; BEENAKKER, Wim (RU Nijmegen); PEETERS, Ruud (University of Groningen) Presenter: CARON, Sascha (Nikhef National institute for subatomic physics (NL)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 317 EPS-HEP 2017 / Report of Contributions Electroweak precision measureme …
Contribution ID: 400 Type: Poster Presentation
Electroweak precision measurements at CLIC
The Compact Linear Collider (CLIC) is an option for afuture electron-positron collider operating at centre-of-mass energies from a few hundred GeV up to 3 TeV. Following an overview of precision electroweak measurements possible at a high-energy electron-positron collider like CLIC, details will be presented on two recent physics benchmark analyses based on full detector simulations and assuming centre-of-mass energies of 1.4 and 3 TeV. Vector boson scattering gives insight into the mechanism of electroweak symmetry breaking. The processes e+e− → W W νν and e+e− → ZZνν were studied using fully hadronic events which provide the full kinematic information on the final-state bosons. The expected precisions on anonalous gauge couplings are extracted. The process e+e− → γγ allows to search for deviations from QED. The expected sensitivities to a finite electron size and other scenarios are discussed.
Experimental Collaboration CLICdp Collaboration
Presenter: WEBER, Matthias Artur (CERN) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 318 EPS-HEP 2017 / Report of Contributions Higgs and BSM physics at CLIC
Contribution ID: 401 Type: Parallel Talk
Higgs and BSM physics at CLIC Friday, 7 July 2017 14:45 (15 minutes)
The Compact Linear Collider (CLIC) is an option for afuture electron-positron collider operating at centre-of-mass energies from a few hundred GeV up to 3 TeV. This contribution discusses the Higgs and BSM physics reach of CLIC operating in several energy stages. The presented results are based on physics benchmark analyses using full detector simulations, several of which have been completed recently. The initial stage of operation near the top quark pair production threshold allows to study Higgs boson production in the Higgsstrahlung and WW-fusion processes, resulting in model-independent determinations of the Higgs couplings. High-energy operation, here assumed at 1.4 and 3 TeV, gives access to rarer Higgs decays and production processes such as double Higgs production, which is sensitive to the Higgs self-coupling. In the second part of the presentation, examples for direct and indirect new physics searches are given. In both cases, the achievable sensitivities generally rise with the centre-of-mass energy.
Experimental Collaboration CLICdp
Primary author: CLICDP COLLABORATION Presenter: MILUTINOVIC-DUMBELOVIC, Gordana (University of Belgrade (RS)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 319 EPS-HEP 2017 / Report of Contributions The CLIC detector
Contribution ID: 402 Type: Parallel Talk
The CLIC detector Saturday, 8 July 2017 11:45 (15 minutes)
The proposed Compact Linear Collider (CLIC) will provide electron-positron collisions with centre-of-mass energy operation in three stages from a few hundred GeV up to 3 TeV. This offers a rich precision physics program combined with high sensitivity to a wide range of possible new phenomena. The precision required for such measurements and the specific conditions imposed by the beam bunch sizes and time structure put strict requirements on the detector design and technology development. This includes ultra-low mass vertexing and tracking systems with small cells, highly granular imaging calorimeters, and a precise hit-timing resolution for all subsystems. A new optimised detector model matching these requirements has been integrated in the CLIC simulation framework. A variety of detector optimisation studies have been carried out to establish the overall detector performance and to assess the impact of different technology options. In parallel, ambitious R&D programs, e.g. for silicon tracking detectors, are pursued, addressing the challenging detector requirements with innovative new technologies. This contribution reviews the optimisation studies performed for critical parameters of the CLIC detector, presents the detector performance achieved in full-detector simulations and gives an overview of the ongoing hardware R&D.
Experimental Collaboration CLICdp Collaboration
Primary author: WEBER, Matthias Artur (CERN) Presenter: WEBER, Matthias Artur (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 320 EPS-HEP 2017 / Report of Contributions Electron identification with the A…
Contribution ID: 403 Type: Poster Presentation
Electron identification with the ATLAS detector
Electron identification is a crucial input to many ATLAS physics analysis. The electron identifica- tion used in ATLAS for run 2 is based on a likelihood discrimination to separate isolated electron candidates from candidates originating from photon conversions, hadron misidentification and heavy flavor decays. In addition, isolation variables are used as further handles to separate signal and background. The measurement of the efficiencies of the electron identification andiso- lation cuts are performed with the data using tag and probe techniques with large statistics sample of Z->ee and J/psi->ee decays. These measurements performed with pp collisions data at sqrt(s)=13 TeVin 2016 (2015) corresponding to an integrated luminosity of 33.9 (3.1)fb-1 of sqrt(s)=13 TeV pp are presented.
Experimental Collaboration ATLAS
Presenter: TARNA, Grigore (CPPM, Aix-Marseille Université, CNRS/IN2P3 (FR) / IFIN-HH Bucharest (RO)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 321 EPS-HEP 2017 / Report of Contributions Photon identification with the AT …
Contribution ID: 404 Type: Poster Presentation
Photon identification with the ATLAS detector
Good photon identification capabilities are important for many aspects of the ATLAS physics pro- gram, from Higgs boson measurements to new physics searches. The identification of prompt photons and the rejection of background coming mostly from photons from hadron decays relies on the high granularity of the ATLAS calorimeter. Several methods are used to measure with data the efficiency of the photon identification require- ments, to cover a broad energy spectrum. At low energy, photons from radiative Z decays are used. In the medium energy range, similarities between electrons and photon showers are exploited us- ing Z->ee decays. At high energy, inclusive photon samples are used. The results of these measurements performed with pp collisions data at sqrt(s)=13 TeVin2016 (2015) corresponding to an integrated luminosity of 33.9 (3.1)fb-1 of sqrt(s)=13 TeV pp are presented.
Experimental Collaboration ATLAS
Presenter: GESSNER, Gregor (Technische Universitaet Dortmund (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 322 EPS-HEP 2017 / Report of Contributions Electron and photon energy meas …
Contribution ID: 405 Type: Poster Presentation
Electron and photon energy measurement calibration with the ATLAS detector
An accurate calibration of the energy measurement of electron and photon is needed for many ATLAS physics analysis. The calibration of the energy measurement is performed in-situ using a large statistics ofZ->ee events. A pre-requisite of this calibration is a good understanding of the material in front of the calorimeter and of the inter-calibration of the different calorimeter layers. The Z->ee sample is also used to measure the energy resolution. The results obtained with the pp collisions data at sqrt(s)=13 TeV in 2016 (2015) corresponding to an integrated luminosity of 33.9 (3.1)fb-1 of sqrt(s)=13 TeV are presented as well as the corresponding uncertainties on the electron and photon energy scales.
Experimental Collaboration ATLAS
Presenter: FALKE, Saskia (Centre National de la Recherche Scientifique (FR)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 323 EPS-HEP 2017 / Report of Contributions Measurement of the tau lepton rec …
Contribution ID: 406 Type: Poster Presentation
Measurement of the tau lepton reconstruction and identification performance in the ATLAS experiment using pp collisions at sqrt(s)=13 TeV
Tau leptons play an important role in many Standard Model and Beyond the Standard Model physics processes that are being investigated at the LHC. This poster details measurements of the performance of the reconstruction and identification of hadronic tau lepton decays using the ATLAS detector. The measurements include the performance of the identification, trigger, energy calibration and electron discrimination algorithms for reconstructed tau candidates. The perfor- mance of these algorithms is measured with Z bosons or top quark decays to tau leptons and uses the full 2015 dataset of pp collisions collected at the LHC at a centre-of-mass energy sqrt(s)=13 TeV.
Experimental Collaboration ATLAS
Presenter: DYSCH, Samuel (University of Manchester (GB)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 324 EPS-HEP 2017 / Report of Contributions The ATLAS Trigger in Run-2 - De…
Contribution ID: 407 Type: Parallel Talk
The ATLAS Trigger in Run-2 - Design, Menu and Performance Thursday, 6 July 2017 10:00 (15 minutes)
The ATLAS trigger has been used very successfully for online event selection during the firstpart of the second LHC run (Run-2) in 2015/16 at a centre-of-mass energy of 13 TeV. The trigger sys- tem is composed of a hardware Level-1 trigger and a software-based high-level trigger. Events are selected based on physics signatures such as presence of energetic leptons, photons, jets or large missing energy. The trigger system exploits topological information, as well as multi-variate methods to carry out the necessary physics filtering. In total, the ATLAS online selection consists of thousands of different individual triggers. Taken together constitute the trigger menu, which reflects the physics goals of the collaboration while taking into account available data takingre- sources. The trigger selection capabilities of ATLAS during Run-2 have been significantly improved com- pared to Run-1, in order to cope with the higher event rates and number of interactions per bunch crossing (pileup) which are the result of the almost doubling of the center-of-mass collision energy and the increase in the instantaneous luminosity of the LHC. At Level-1 the undertaken improve- ments resulted in more pileup-robust selection efficiencies and event rates and in a reduction of fake candidate particles, including the novel use of topological information. The re-design of the high-level trigger allows deployment of more sophisticated reconstruction techniques online, re- sulting in trigger selection performance nearly matching that of offline reconstruction.
This presentation gives a comprehensive review the ATLAS trigger system and menu inRun2, covering validation and perational aspects, trigger bandwidth constraints, and the latest perfor- mance evaluations. Using a few examples the presentation shows the impressive improvements that were made in preparation for the expected highest ever luminosities and pileup in the 2017/18 LHC run.
Experimental Collaboration ATLAS
Primary author: VAZQUEZ SCHROEDER, Tamara (McGill University (CA)) Presenter: VAZQUEZ SCHROEDER, Tamara (McGill University (CA)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 325 EPS-HEP 2017 / Report of Contributions Upgrades to the ATLAS trigger sy …
Contribution ID: 408 Type: Parallel Talk
Upgrades to the ATLAS trigger system Thursday, 6 July 2017 14:30 (15 minutes)
In coming years the LHC is expected to undergo upgrades to increase both the energy of proton- proton collisions and the instantaneous luminosity. In order to cope with these more challenging LHC conditions, upgrades of the ATLAS trigger system will be required. This talk will focus on some of the key aspects of these upgrades. Firstly, the upgrade period between 2019-2021 will see an increase in instantaneous luminosity to 3 × 1034cm−2s−1. Upgrades to the Level 1 trigger sys- tem during this time will include improvements for both the muon and calorimeter triggers. These include the upgrade of the first-level Endcap Muon trigger, the calorimeter trigger electronics and the addition of new calorimeter feature extractor hardware, such as the Global Feature Extrac- tor (gFEX). An overview will be given on the design and development status the aforementioned systems, along with the latest testing and validation results.
By 2026, the High Luminosity LHC will be able to deliver 14 TeV collisions with an order of mag- nitude larger instantaneous luminosity, expected to reach7.5 √ó 10^34 cm‚àí2s‚àí1. ATLAS is planning a series of upgrades to prepare for this even more challenging environment. This presentation will describe the baseline architecture for this upgrade, while also detailing on- going studies into new system components and their interconnections. The overall challenge here is to meet low latency and high data throughput requirements within the limits given by techno- logical evolution. A discussion on the physics motivations and the expected performance based on simulation studies will be presented, together with the open issues and plans.
Experimental Collaboration ATLAS
Primary author: PASTORE, Francesca (Royal Holloway, University of London) Presenter: PASTORE, Francesca (Royal Holloway, University of London) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 326 EPS-HEP 2017 / Report of Contributions Modernising ATLAS Software and …
Contribution ID: 409 Type: Parallel Talk
Modernising ATLAS Software and Metadata Thursday, 6 July 2017 14:45 (15 minutes)
ATLAS has embarked on a major program of development in its offline software framework and the indexing of the data. In this paper we outline the motivations for such major changes, based on expected CPU evolution in the next decade, the increasing need to use memory more efficiently, and the increase of data volume expected for the LHC Run 3. The offline software framework, Athena will develop into a new multithreaded version, AthenaMT. We describe the changes that have been implemented to deal with concurrency in terms of data flow within an event, restruc- turing of framework components for thread safety and how to handle non-event data, such as detector conditions. We also describe how ATLAS moved to the git source control system to allow a continuous integration and code review to maintain software quality. ATLAS produces over 50 PByte of data and simulation every year, these data need to be curated over their lifetime to allow discovery and retrieval, and to maintain their accessibility and analysability over time. We discuss the metadata infrastructure developed by the ATLAS collaboration to characterise these data at the event, dataset and container level, and its expected evolution for Run 3.
Experimental Collaboration ATLAS
Primary author: STEWART, Graeme (University of Glasgow (GB)) Presenter: STEWART, Graeme (University of Glasgow (GB)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 327 EPS-HEP 2017 / Report of Contributions The new ATLAS Fast Calorimeter …
Contribution ID: 411 Type: Poster Presentation
The new ATLAS Fast Calorimeter Simulation
Producing the very large samples of simulated events required by many physics and performance studies with the ATLAS detector using the full Geant4 detector simulation is highly CPU intensive. Fast simulation tools are a use- ful way of reducing CPU requirements when detailed detector simulations are not needed. Dur- ing the LHC Run-1, a fast calorimeter simulation (FastCaloSim) was successfully used in ATLAS. FastCaloSim provides a simulation of the particle energy response at the calorimeter read-out cell level, taking into account the detailed particle shower shapes and the correlations between the energy depositions in the various calorimeter layers. It is interfaced to the standard ATLAS digiti- zation and reconstruction software, and it can be tuned to data more easily than Geant4. Nowan improved version of FastCaloSim is in development, incorporating the experience with the version used during Run-1. The new FastCaloSim aims to overcome some limitations of the first version by improving the description of substructure variables for boosted jets, and giving a better per- formance in the forward calorimeters, which is important for forward jets in vector-boson-fusion topologies. A first prototype is available and is being tested and validated now. ATLAS plansto use this new FastCaloSim parametrization to simulate several billion events in the upcoming LHC runs. In this talk, we will describe this new FastCaloSim parametrisation.
Experimental Collaboration ATLAS
Primary author: HEATH, Matthew Peter (University of Edinburgh (GB)) Presenter: HEATH, Matthew Peter (University of Edinburgh (GB)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 328 EPS-HEP 2017 / Report of Contributions The upgrade of the forward Muon …
Contribution ID: 412 Type: Parallel Talk
The upgrade of the forward Muon Spectrometer of the ATLAS Experiment: the New Small Wheel project Thursday, 6 July 2017 15:00 (15 minutes)
The current innermost stations of the ATLAS endcap muon tracking system (the Small Wheel)will be upgraded in 2019 and 2020 to retain the good precision tracking and trigger capabilities in the high background environment expected with the upcoming luminosity increase of the LHC. The upgraded detector will consist of eight layers each of Resistive Micromegas (MM) and small-strip Thin Gap Chambers (sTGC) together forming the ATLAS New Small Wheels. Large area sTGC’s up to 2 m2 in size and totaling an active area each of 1200 m2 will be employed for fast and precise triggering. The required spatial resolution of about 100 µm will allow the Level-1 trigger track segments to be reconstructed with an angular resolution of approximately 1mrad. The precision cathode plane has strips with a 3.2mm pitchfor precision readout and the cathode plane on the other side has pads to produce a 3-out-of-4 coinci- dence to identify passage of a track in an sTGC quadruplet, selecting which strips to read-out. The eight layers of MM detectors are arranged in multilayers of two quadruplets, for a total of about 1200 m2 detection planes. All quadruplets have trapezoidal shapes with surface areas between 2 and 3 m2. The readout elements consist of 300 µm wide strips with a pitch of ~450 µm for a total of 2.1 M readout channels. A spatial resolution better than 100 um independent of the track incidence angle is required. The total number of trigger and readout channels is about 2.4 millions, and the overall powercon- sumption is expected to be about 75 kW. The electronics design will be implemented in some 8000 front-end boards including the design of four custom front-end ASICs capable to drive trigger and tracking primitives with high speed sterilizers to drive trigger candidates to the backend trigger processor system. The construction procedures of sTGC’s and MM’s and of the electronic system will be reviewed along with the results obtained on full-size prototypes.
Experimental Collaboration ATLAS
Primary author: IENGO, Paolo (CERN) Presenter: IENGO, Paolo (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 329 EPS-HEP 2017 / Report of Contributions ATLAS Forward Proton detectors: …
Contribution ID: 413 Type: Parallel Talk
ATLAS Forward Proton detectors: first experience with data Thursday, 6 July 2017 12:30 (15 minutes)
The aim of the ATLAS Forward Proton (AFP) detector system is the measurement of protons scat- tered diffractively or electromagnetically at very small angles. The first arm of the system was installed last yearand AFP took data in several commissioning and physics runs. The installation of the second arm ison- going and will be completed in time for the 2017 data taking period. This will allow measurements of processes with two forward protons: central diffraction, exclusive production, and two-photon processes. During the presentation, the early results and experience from the first year of data taking will be presented together with the status of the second-arm installation, first experience with this year data taking using two-arm set-up, and plans for the future.
Experimental Collaboration ATLAS
Primary author: PINFOLD, James (University of Alberta (CA)) Presenter: PINFOLD, James (University of Alberta (CA)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 330 EPS-HEP 2017 / Report of Contributions LUCID: ATLAS Luminosity Detector
Contribution ID: 414 Type: Poster Presentation
LUCID: ATLAS Luminosity Detector
The LUCID detector is the main luminosity provider of the ATLAS experiment and theonlyone able to provide a reliable luminosity determination in all beam configurations, luminosity ranges and at bunch-crossing level. LUCID was entirely redesigned in preparation for Run 2: both the detector and the electronics were upgraded in order to cope with the challenging conditions ex- pected at the LHC center of mass energy of 13 TeV and with 25 ns bunch-spacing. An innovative calibration system based on radioactive 207 Bi sources deposited on the quartz window of the read- out photomultipliers was implemented, resulting in the ability to control the detectors long time stability at few percent level.
A description of the detector and its readout electronics will be given as well as preliminary results on the ATLAS luminosity measurement and related systematic uncertainties.
Experimental Collaboration ATLAS
Primary author: CABRAS, Grazia (Universita e INFN, Bologna (IT)) Presenter: CABRAS, Grazia (Universita e INFN, Bologna (IT)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 331 EPS-HEP 2017 / Report of Contributions Operational Experience and Perfor …
Contribution ID: 415 Type: Parallel Talk
Operational Experience and Performance with the ATLAS Pixel detector with emphasis on radiation damage Thursday, 6 July 2017 09:45 (15 minutes)
The tracking performance of the ATLAS detector relies critically on its 4-layer Pixel Detector, that has undergone significant hardware and software upgrades to meet the challenges imposed bythe higher collision energy, pileup and luminosity that are being delivered by the Large Hadron Col- lider, with record breaking instantaneous luminosities of 1.3 x 10^34 cm-2 s-1 recently surpassed. The key status and performance metrics of the ATLAS Pixel Detector are summarised, andtheop- erational experience and requirements to ensure optimum data quality and data taking efficiency are described, with special emphasis to radiation damage experience.
Experimental Collaboration ATLAS
Primary author: BUTTI, Pierfrancesco (CERN) Presenter: BUTTI, Pierfrancesco (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 332 EPS-HEP 2017 / Report of Contributions Overview and developments for th …
Contribution ID: 416 Type: Parallel Talk
Overview and developments for the Phase-II upgrade of the inner tracker of the ATLAS experiment Saturday, 8 July 2017 09:30 (15 minutes)
In the high luminosity era of the Large Hadron Collider (HL-LHC), the instantaneous luminosity is expected to reach unprecedented values, resulting in about 200 proton-proton interactions in a typical bunch crossing. To cope with the resultant increase in occupancy, bandwidth and radiation damage, the ATLAS Inner Detector will be replaced by an all-silicon system, the Inner Tracker (ITk), aiming to provide tracking coverage up to |η|<4.
The ITk consists of an inner pixel and an outer strip detector. The total surface area ofsiliconin the new pixel system could measure up to 14 m2, depending on the final layout choice, due in 2017. The strip detector will compromise up to 190 m2 of silicon. In the collaboration alargeeffortis ongoing to evaluate the design both with simulation and experimental results. In the presentation highlight results of various components like sensors, modules and larger structures for both the pixel and strip detector will be shown.
Experimental Collaboration ATLAS
Primary author: HAYWARD, Helen (University of Liverpool (GB)) Presenter: HAYWARD, Helen (University of Liverpool (GB)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 333 EPS-HEP 2017 / Report of Contributions Cosmology with Type Ia supernov …
Contribution ID: 418 Type: Parallel Talk
Cosmology with Type Ia supernovae: environmental effects Friday, 7 July 2017 12:45 (15 minutes)
Type Ia supernovae (SNe Ia) have proved to be a successful probe of dark energy thanks to their property of standardizable candle allowing us to construct a supernova Hubble diagram with very low scatter through a two-parameter empirical light-curve correction. However, 0.15 magnitude intrinsic luminosity variation remains once corrections are applied, leaving plenty of room for a third variable correlating to Hubble diagram residuals. Indeed, the standardization process does not entirely capture the physical processes at play leading to the triggering of the explosion, and does not take into account the evolution of progenitor properties through history. In an attempt to link host galaxy properties to supernova light-curves, numerous independent studies have shown that host galaxy stellar masses significantly correlate with light-curve standardization parameters, and that Hubble diagram residuals correlate to global properties of the host galaxy. I present a consistent set of measurements of the properties of the global and local environments of type Ia supernovae in the largest spectroscopic sample to date. Our sample includes the full Supernova Legacy Survey data (SNLS) as well as the SDSS data and a number of well-measured low-redshift supernovae. While the analysis is still blinded regarding cosmology, preliminary results can be obtained which cast a new light on the environmental dependence of supernova luminosity.
Experimental Collaboration
Primary author: ROMAN, Matthieu (LPNHE Paris) Presenter: ROMAN, Matthieu (LPNHE Paris) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 334 EPS-HEP 2017 / Report of Contributions ATLAS Calorimeter: Run-2 perfor …
Contribution ID: 420 Type: Parallel Talk
ATLAS Calorimeter: Run-2 performance and Phase-II upgrade Friday, 7 July 2017 09:34 (17 minutes)
The ATLAS detector was designed and built to study proton-proton collisions produced atthe LHC at centre-of-mass energies up to 14 TeV and instantaneous luminosities up to 1034cm−2s−1. A liquid argon (LAr)-lead sampling calorimeter is employed as electromagnetic calorimeter and hadronic calorimeter, except in the barrel region, where a scintillator-steel sampling calorimeter (TileCal) is used as hadronic calorimeter. This presentation will give first an overview of the detector operation and data quality, aswell the achieved performance of the ATLAS calorimetry system. Additionally, the upgrade projects of the ATLAS calorimeter system for the high luminosity phase of the LHC (HL-LHC) will be presented. For the HL-LHC, the instantaneous luminosity is expected to increase up to L ≃ 7.5 × 1034cm−2s−1 and the average pile-up up to 200 interactions per bunch crossing. The major R&D item is the upgrade of the electronics for both LAr and Tile calorimeters inorderto cope with longer latencies of up to 60 us. The expected radiation doses will exceed the qualification range of the current readout system. The status on the R&D of the low-power ASICs (pre-amplifier, shaper, ADC, serializer and transmitters) and readout electronics for all the design options will be discussed.
Moreover, a High Granularity Timing Detector (HGTD) is proposed to be added in front of the LAr calorimeters in the end-cap region (2.4 <|η|< 4.2) for pile-up mitigation at Level-0 trigger level and offline reconstruction. The HGTD will correlate the the energy deposits in the calorimeter to different proton-proton collision vertices by using TOF information with high time resolution (30 pico-second per readout cell) based on the Silicon sensor technologies. The current test beam results will be presented as well.
Experimental Collaboration ATLAS
Primary author: BOUMEDIENE, Djamel Eddine (Univ. Blaise Pascal Clermont-Fe. II (FR)) Presenter: BOUMEDIENE, Djamel Eddine (Univ. Blaise Pascal Clermont-Fe. II (FR)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 335 EPS-HEP 2017 / Report of Contributions Laser calibration of the Atlas Tile …
Contribution ID: 421 Type: Poster Presentation
Laser calibration of the Atlas Tile calorimeter
The ATLAS Tile Calorimeter (TileCal) is the central section of the hadronic calorimeter oftheAT- LAS experiment at CERN’s Large Hadron Collider. This sampling calorimeter uses steel plates as absorber and scintillating tiles as active medium. The light produced by the passage of charged particles is transmitted by wavelength shiftingfibres to photomultiplier tubes (PMTs) located on the outside of the calorimeter. High performance stability of the ATLAS Tile calorimeter is achieved with a set of calibration pro- cedures. One step of the calibration procedure is based on measurements of response stability to laser exci- tation of the PMTs that are used to readout the calorimeter cells. A facility to study in lab the PMT stability response is operating in the PISA-INFN laboratories since 2015. Goals of the tests in lab are to study the time evolution of the PMT response to reproduce and to understand the origin of the response drifts seen with the PMTs mounted on the Tile calorimeter in its normal operation during LHC Run 1 and Run 2. A new statistical approach was developed to measure the drift of the absolute PMT gain. This approach was applied to both the ATLAS laser calibration data and to the data collected in the Pisa local laboratory. The preliminary results from these two studies are presented.
Experimental Collaboration ATLAS
Primary author: DI GREGORIO, Giulia (Universita & INFN, Pisa (IT)) Presenter: DI GREGORIO, Giulia (Universita & INFN, Pisa (IT)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 336 EPS-HEP 2017 / Report of Contributions Performance of Jets and Missing T …
Contribution ID: 424 Type: Poster Presentation
Performance of Jets and Missing Transverse Energy Measurements using Particle Flow in ATLAS
Jets and missing transverse energy are key elements in both precision measurements and searches for new particles at LHC. Improved jet momentum resolution and pile-up stability of jet energy and missing transverse energy measurements are highly desirable in the high pile-up conditions expected in the next years of LHC. A particle flow algorithm, which combines measurements from both the tracker and the calorimeter, has been developed. The performance of particle-flow reconstruction of jets and missing transverse energy are presented and compared with purely calorimeter-based algorithms.
Experimental Collaboration ATLAS
Presenter: BROCK, Ian (University of Bonn (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 337 EPS-HEP 2017 / Report of Contributions Tagging and calibration of large ra …
Contribution ID: 425 Type: Parallel Talk
Tagging and calibration of large radius jets from boosted top quarks, W, Z and Higgs bosons in ATLAS Saturday, 8 July 2017 10:00 (15 minutes)
In order to fully exploit the abundance of hadronically decaying high momentum top quarks, and W, Z or Higgs bosons produced at LHC, jet substucture has become crucial to a wide array of searches and measurements. The latest ATLAS results in terms of optimisation and performance of large radius jets taggers are presented. The calibration of large radius jets energy and mass and their systematic uncertainties are also presented.
Experimental Collaboration ATLAS
Primary authors: CLEMENT, Christophe (Stockholm University (SE)); CLEMENT, Christophe (Stockholm University)
Presenters: CLEMENT, Christophe (Stockholm University (SE)); CLEMENT, Christophe (Stockholm University) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 338 EPS-HEP 2017 / Report of Contributions Large Radius Tracking at the ATL …
Contribution ID: 426 Type: Poster Presentation
Large Radius Tracking at the ATLAS Experiment
Many exotics and SUSY models include particles which are long lived resulting in decays which are highly displaced from the proton-proton interaction point (IP). The standard track reconstruc- tion algorithm used by the ATLAS collaboration is optimized for tracks from “primary” particles, which originate close to the IP. To this end, tight restrictions on the transverse and longitudinal impact parameters, as well as on several other tracking variables, are applied to improve the track reconstruction performance and to reduce the fake rate. This track reconstruction is very effi- cient for primary particles, but not for the non-prompt particles mentioned above. In order to reconstruct tracks with large impact parameters due to displaced decays, a tracking algorithm has been optimized to re-run with loosened requirements over the hits left over after standard track reconstruction has finished. Enabling this “retracking” has significantly increased the efficiency of reconstructing tracks from displaced decays, which has benefited the search for Beyond the Stan- dard Model particles. This poster shows the results of studies which have been done toimprove the retracking, and the impact of the inclusion of these tracks in recent ATLAS searches.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: LUTZ, Margaret Susan (University of Massachusetts (US)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 339 EPS-HEP 2017 / Report of Contributions Triggering on leptons, hadronic ta …
Contribution ID: 428 Type: Poster Presentation
Triggering on leptons, hadronic taus and photons in ATLAS
Lepton and photon triggers covering transverse energies from a few GeV to several TeV are es- sential for signal selection in a wide variety of ATLAS physics analyses studying Standard Model processes and searching for new phenomena. Final states including leptons and photons had, for example, an important role in the discovery and measurement of the Higgs boson. In ATLAS, ded- icated triggers are also used to collect data for calibration, efficiency and fake rate measurements. The ATLAS trigger system is divided in a hardware-based Level 1 and a software based HighLevel Trigger, which feature dedicated components to improve lepton and photon selection. In LHC Run 2 the increasing instantaneous luminosity, higher collision centre-of-mass energy and larger number of interactions per bunch crossing (pileup) required the optimisation of the trigger selec- tions at each level to control rates and keep efficiencies high. These improvements included new and enhanced selections in hardware at Level-1, as well as advanced multivariate techniques in the High Level Trigger.
In this presentation the ATLAS trigger implementations for electrons, muons, taus and photon triggers will be presented, alongside performance in Run 2 so far and planned improvements for the future.
Experimental Collaboration ATLAS
Primary author: MARTIN, Tim (University of Warwick (GB)) Presenter: MARTIN, Tim (University of Warwick (GB)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 340 EPS-HEP 2017 / Report of Contributions FELIX: the new detector readout s …
Contribution ID: 429 Type: Poster Presentation
FELIX: the new detector readout system for the ATLAS experiment
Starting during the upcoming major LHC shutdown from 2019-2021, the ATLAS experiment at CERN will move to the the Front-End Link eXchange (FELIX) system as the interface between the data acquisition system and the trigger and detector front-end electronics. FELIX will function as a router between custom serial links and a commodity switch network, which will use industry standard technologies to communicate with data collection and processing components. The FELIX system is being developed using commercial-off-the-shelf server PCtech- nology in combination with a FPGA-based PCIe Gen3 I/O card hosting GigaBit Transceiver links and with Timing, Trigger and Control connectivity provided by an FMC-based mezzanine card. FELIX functions will be implemented with dedicated firmware for the Xilinx FPGA (Virtex 7 and Kintex UltraScale) installed ontheI/O card alongside an interrupt-driven Linux kernel driver and user-space software. On the network side, FELIX is able to connect to both Ether- net or Infiniband network architectures. This presentation will describe the FELIX system design as well as reporting on results of the ongoing development program.
Experimental Collaboration ATLAS
Primary author: FILTHAUT, Frank (Radboud University and Nikhef, Nijmegen (NL)) Presenter: FILTHAUT, Frank (Radboud University and Nikhef, Nijmegen (NL)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 341 EPS-HEP 2017 / Report of Contributions Hadronic triggers and trigger …
Contribution ID: 431 Type: Poster Presentation
Hadronic triggers and trigger object-level analysis at ATLAS
Hadronic signatures are critical to the high energy physics analysis program, and are broadly used for both Standard Model measurements and searches for new physics. These signatures include generic quark and gluon jets, as well as jets originating from b-quarks or the decay of massive particles (such as electroweak bosons or top quarks). Additionally missing transverse momentum from non-interacting particles provides an interesting probe in the search for new physics beyond the Standard Model. Developing trigger selections that target these events is a huge challenge at the LHC due to the enormous rates associated with these signatures. This challenge is exacerbated by the amount of pile-up activity, which continues to grow. In order to address these challenges, several new techniques have been developed during the past year in order to significantly improve the potential of the 2017 dataset and overcome the limiting factors to more deeply probing for new physics, such as storage and computing requirements for the analysis of this data.
This presentation presents an overview of how we trigger on hadronic signatures at the ATLAS ex- periment, outlining the challenges of hadronic object triggering and describing the improvements performed over the course of the Run 2 LHC data-taking program, such as analyses of a compact data stream involving trigger-level objects, recorded at a higher rate than is possible for full event data. The performance in Run 2 data will be shown, including demonstrations of the newtech- niques being used in 2017. We also discuss further critical developments envisaged for the rest of Run 2.
Experimental Collaboration ATLAS
Primary author: ZARIPOVAS, Donatas Ramilas (University of Glasgow (GB)) Presenter: ZARIPOVAS, Donatas Ramilas (University of Glasgow (GB)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 342 EPS-HEP 2017 / Report of Contributions Tracking and flavour tagging selec …
Contribution ID: 433 Type: Poster Presentation
Tracking and flavour tagging selection in the ATLAS High Level Trigger
In high-energy physics experiments, track based selection in the online environment is crucial for the detection of physics processes of interest for further study. This is of particular impor- tance at the Large Hadron Collider (LHC), where the increasingly harsh collision environment is challenging participating experiments to improve the performance of their online selection. Prin- ciple among these challenges is the increasing number of interactions per bunch crossing, known as pileup. In the ATLAS experiment the challenge has been addressed with multiple strategies. Firstly, individual trigger groups focusing on specific physics objects have implemented novel al- gorithms which make use of the detailed tracking and vertexing performed within the trigger to improve rejection without losing efficiency. Secondly, since 2015 all trigger areas have alsoben- efited from a new high performance inner detector software tracking system implemented inthe High Level Trigger. Finally, performance will be further enhanced in future by the installation and commissioning of a hardware based Fast TracKer (FTK) throughout 2017.
This presentation will focus on the performance of the ID tracking software as wellas looking ahead to projected improvements from FTK. Specific focus will be given to the caseof flavour tagging of b-jets, as an example of the implementation of novel algorithms toimprove vertexing and light jet rejection in real time.
Experimental Collaboration ATLAS
Primary author: CALVETTI, Milene (INFN Sezione di Pisa, Universita’ e Scuola Normale Superiore, P)
Presenter: CALVETTI, Milene (INFN Sezione di Pisa, Universita’ e Scuola Normale Superiore, P) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 343 EPS-HEP 2017 / Report of Contributions Operation and Performance of the …
Contribution ID: 434 Type: Poster Presentation
Operation and Performance of the ATLAS Level-1 Calorimeter and Level-1 Topological Triggers in Run 2 at the LHC
In Run 2 at CERN’s Large Hadron Collider, the ATLAS detector uses a two-level trigger system to reduce the event rate from the nominal collision rate of 40 MHz to the event storage rate of 1 kHz, while preserving interesting physics events. The first step of the trigger system, Level-1, reduces the event rate to 100 kHz with a latency of less than 2.5 μs. One component of this system is the Level-1 Calorimeter Trigger (L1Calo), which uses coarse-granularity information from the electromagnetic and hadronic calorimeters to identify regions of interest corresponding to elec- trons, photons, taus, jets, and large amounts of transverse energy and missing transverse energy. In this talk, we will discuss the improved performance of the L1Calo system in the challenging, high-luminosity conditions provided by the LHC in Run 2.
As the LHC exceeds its design luminosity, it is becoming even more critical to reduce event rates while preserving physics. A new feature of the ATLAS Run 2 trigger system is the Level-1 Topolog- ical Trigger (L1Topo), which uses four FPGAS to process information from the L1Calo and Level-1 Muon Trigger systems, performing kinematic and angular selections with a latency of 200 ns. The physics motivation for L1Topo, as well as its implementation and performance in the ATLAS trig- ger system in Run 2, will be discussed.
Experimental Collaboration ATLAS
Primary author: WEBER, Sebastian Mario (Ruprecht-Karls-Universitaet Heidelberg (DE)) Presenter: WEBER, Sebastian Mario (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 344 EPS-HEP 2017 / Report of Contributions Performances of the ATLAS Level- …
Contribution ID: 436 Type: Poster Presentation
Performances of the ATLAS Level-1 Muon barrel trigger during the Run-II data taking
The Level-1 Muon Barrel Trigger is one of the main elements of the event selection oftheATLAS experiment at the Large Hadron Collider. It exploits the Resistive Plate Chambers (RPC) detectors to generate the trigger signal. The RPCs are placed in the barrel region of the ATLAS experiment: they are arranged in three concentric double layers and operate in a strong magnetic toroidal field. RPC detectors cover the pseudo-rapidity range |η|<1.05 for a total surface of more than 4000 m2 and about 3600 gas volumes. The Level-1 Muon Trigger in the barrel region allows to select muon candidates with respect to their transverse momentum and associates them with the correct bunch-crossing number. The trigger system is able to take a decision within a latency of about 2 μs.
The detailed measurement of the RPC detector efficiencies and of the trigger performance during the ATLAS Run-II data taking is here presented.
Experimental Collaboration ATLAS
Primary author: SESSA, Marco (Universita e INFN, Roma Tre (IT)) Presenter: SESSA, Marco (Universita e INFN, Roma Tre (IT)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 345 EPS-HEP 2017 / Report of Contributions Outreaching particle physics to La …
Contribution ID: 440 Type: Parallel Talk
Outreaching particle physics to Latin America: CEVALE2VE and the use of ATLAS open data Saturday, 8 July 2017 11:30 (15 minutes)
Particle physics outreach can play a key role in promoting scientific culture and in the modernisa- tion of university education in Latin America. In this context, the CEVALE2VE virtual community (Centro de Altos Estudios de Altas Energías in Spanish) builds collaborative networks with and between Latin American institutions and motivates physics undergraduate and master students to consider a career in scientific research by introducing them to cutting-edge research andtools used in High Energy Physics (HEP). The ATLAS open data project has been fundamental to achieve these goals as one of ourmain educational tools. As part of its commitment to open access and public engagement the ATLAS ex- periment has made available a large dataset to the public for the first time in 2016 and CEVALE2VE have been using this dataset for HEP virtual courses and Physics Without Frontiers roadshows. In this contribution we will present the different activities hosted by CEVALE2VE and discuss the importance of using open data and open software to reach strong young students lacking exposure to particle physics research.
Experimental Collaboration ATLAS
Presenter: CAMACHO TORO, Reina Coromoto (University of Chicago (US)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 346 EPS-HEP 2017 / Report of Contributions Picturing diversity in the ATLAS E …
Contribution ID: 441 Type: Parallel Talk
Picturing diversity in the ATLAS Experiment Friday, 7 July 2017 14:45 (15 minutes)
With over 3,000 members from 178 institutes, the ATLAS Collaboration is naturally diverse. How- ever, capturing this diversity through pictures can be a challenge. Photography is a powerful tool, allowing us to reveal the faces behind a story and give the public the unique opportunity to under- stand and appreciate the human aspects of ATLAS’s scientific research. The role of photographs in portraying the diversity of the ATLAS Collaboration will be described. Their role on various communication platforms will be described and their impact examined, with focus on engagement of new audiences.
Experimental Collaboration ATLAS
Presenter: BIONDI, Silvia (Universita e INFN, Bologna (IT)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 347 EPS-HEP 2017 / Report of Contributions Sterile Neutrino searches with MI …
Contribution ID: 442 Type: Parallel Talk
Sterile Neutrino searches with MINOS and MINOS+ Friday, 7 July 2017 11:30 (15 minutes)
Three-flavour neutrino oscillations have proved very successful in describing the observed neu- trino oscillation data. However, there are also some anomalies, including the excesses of appeared electron neutrino interactions in LSND and MiniBooNE, and a sterile neutrino state at a larger mass-splitting scale can provide an explanation for these results.
The MINOS/MINOS+ experiment was a long-baseline neutrino experiment in the US, collecting beam and atmospheric neutrino interactions from 2003 until 2016. MINOS was optimised for the study of muon neutrino disappearance in the NuMI beam at Fermilab. The continuation of the experiment with a medium energy beam configuration is called MINOS+. A sterile neutrino in MINOS/MINOS+ would appear as a perturbation on the three-flavour oscillations in both muon neutrino disappearance and electron neutrino appearance channels. A search for sterile neutrinos has been performed using charged-current and neutral-current interactions in two detectors sepa- rated by 734km. The inclusion of two years of MINOS+ data and an improved fit method provides a much increased sensitivity over the previous MINOS result that was combined with Daya Bay. The magnetised nature of the MINOS detectors has been used to perform a similar analysis using antineutrinos. Finally, a search for sterile-driven anomalous appearance of electron neutrinos has been performed with MINOS+.
Experimental Collaboration MINOS/MINOS+
Primary author: WHITEHEAD, Leigh Howard (CERN) Presenter: WHITEHEAD, Leigh Howard (CERN) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 348 EPS-HEP 2017 / Report of Contributions Energy-staging of the Compact Li …
Contribution ID: 443 Type: Poster Presentation
Energy-staging of the Compact Linear Collider
The Compact Linear Collider (CLIC) is a proposed high-energy, high-luminosity e+e- collider for physics studies and exploration up to the multi-TeV energy scale. We currently foresee building and operating CLIC in three sequential centre-of-mass energy stages at 380 GeV, 1.5 TeV, and 3 TeV. We will present an update of this energy-staging strategy and discuss the technical details of the accelerator complex needed to realise it. We will discuss in particular the accelerator parameters, the RF system design, the luminosity performance, and power and cost considerations, as well as the strategy for upgrading the machine from the lower to higher energy stages.
Experimental Collaboration CLIC/CTF3 Collaboration
Presenter: ROBERTS, Jack (University of Oxford (GB)) Session Classification: Poster session
Track Classification: Accelerators for HEP
October 6, 2021 Page 349 EPS-HEP 2017 / Report of Contributions The Short Baseline Neutrino Progr …
Contribution ID: 444 Type: Parallel Talk
The Short Baseline Neutrino Program at Fermilab Friday, 7 July 2017 11:45 (15 minutes)
The Fermilab Short-Baseline Neutrino (SBN) program, with three liquid argon time projection chamber (LAr-TPC) detectors located along the Booster Neutrino Beam, presents a rich physics and R&D opportunity. SBN will perform sensitive searches for neutrino oscillations in both ap- pearance and disappearance channels at the 1 eV^2 mass- splitting scale, thereby testing the sterile neutrino interpretation of the anomalous excesses of electron (anti)neutrinos observed by LSND and MiniBooNE. Also, the SBN detectors play a major role in on-going R&D efforts aimed at real- izing multi-kiloton-scale LAr-TPC detectors in the next generation long-baseline neutrino oscilla- tion experiment DUNE. To form the SBN program, two additional detectors will join MicroBooNE (currently operational at 470m along the beam); the new Short-Baseline Near Detector (SBND) will be installed at 110m, and the largest existing LAr-TPC, the ICARUST600, will be transported to Fermilab in 2017 and sited at 600m. In this talk, we present the current status of the SBND and ICARUS detectors and review the physics reach of the full three- detector SBN program.
Experimental Collaboration SBND, MIcroBooNE, ICARUS
Primary author: Dr TUFANLI , Serhan (Yale) Presenter: Dr TUFANLI , Serhan (Yale) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 350 EPS-HEP 2017 / Report of Contributions Progress towards nanometre-level …
Contribution ID: 445 Type: Poster Presentation
Progress towards nanometre-level beam-position stabilisation at ATF2
The Feedback On Nanosecond Timescales (FONT) Group has developed low-latency beam feed- back systems for providing bunch-by-bunch beam position correction capability for Linear Col- liders. Prototype feedbacks have been deployed and tested at the KEK ATF2 facility, where they have been extended for use in stabilising the vertical position of the electron beam in the upstream and interaction-point (IP) beamline regions. We report progress towards nanometre-level stabili- sation at the ATF2 IP using feedback and feed-forward systems, as well as upstream and IP beam correction schemes, utilising high-resolution stripline and cavity BPMs.
Experimental Collaboration
Primary author: BURROWS, Philip Nicholas (University of Oxford (GB)) Presenter: BURROWS, Philip Nicholas (University of Oxford (GB)) Session Classification: Poster session
Track Classification: Accelerators for HEP
October 6, 2021 Page 351 EPS-HEP 2017 / Report of Contributions SUSY scenarios according to EWSB
Contribution ID: 446 Type: Parallel Talk
SUSY scenarios according to EWSB Thursday, 6 July 2017 14:30 (30 minutes)
The talk provides an overview of the status of SUSY breaking scenarios. The focus willbeon the way the electroweak symmetry breaking is achieved and understood in different scenarios. Various aspects of naturalness and its implication will be discussed and compared.
Experimental Collaboration
Primary author: DERMISEK, Radovan Presenter: DERMISEK, Radovan Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 352 EPS-HEP 2017 / Report of Contributions Beam Test Results of Thin n-in-p 3 …
Contribution ID: 447 Type: Poster Presentation
Beam Test Results of Thin n-in-p 3D and Planar Pixel Sensors for the High Luminosity LHC Tracker Upgrade at CMS
The poster will describe the development of new 3D and planar pixel detectors for the LHCPhase- 2 upgrades, funded by INFN and made in collaboration by FBK foundry. The sensors, which are 100µm and 130µm thick n-in-p type, are assembled into hybrid single chip modules bump bonded to the PSI46dig readout chip. Results from beam tests performed at FTBF (Fermilab Test Beam Facility) obtained with modules before and after irradiation up to 5e15 neq/cm2 will be described. We will also report on the first results obtained with 3D pixel sensors 130µm thick with columnar electrodes for different pixel cell prototypes. The 3D prototypes have different unit pixel cellsize, ranging form the standard 100µm x 150µm as used in the present CMS Pixel Tracker, down to 50µm x 50µm and 25µm x 100µm which are most favoured dimensions for the High Luminosity upgrade of the pixel tracker.
Experimental Collaboration CMS
Primary author: ZOI, Irene (University Hamburg) Presenter: ZOI, Irene (University Hamburg) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 353 EPS-HEP 2017 / Report of Contributions Muon identification and performa …
Contribution ID: 448 Type: Poster Presentation
Muon identification and performance in the ATLAS experiment
Muon reconstruction and identification play a fundamental r ole in many analyses of central importance in the LHC run-2 Physics programme. The reconstruction algorithms and identification criteria used in ATLAS in the analyses of pp collision data at √ s = 13 TeV are presented. Their performances are measured in data based on the decays o f Z and J ψ to pair of muons, that provide a large statistics calibration sample. Reconstruction and identifi- cation efficiencies are evaluated, as well as momentum scale s and resolutions, and the results are used to derive precise MC simulation correction s
Experimental Collaboration ATLAS
Presenter: BARONE, Gaetano (Brandeis University (US)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 354 EPS-HEP 2017 / Report of Contributions Towards an asymptotically safe co …
Contribution ID: 451 Type: Parallel Talk
Towards an asymptotically safe completion of the Standard Model Saturday, 8 July 2017 09:20 (20 minutes)
We explore a possibility to UV-complete the Standard Model in an asymptotically safe manner. We assume the existence of NF new types of vector-like fermions which minimally couple to SU(3)C and/or SU(2)L and modify the running of the corresponding gauge couplings in such a way that at least one of them is not asymptotically free anymore. If additionally the BSM fermions carry a non-zero hypercharge, the U(1)Y gauge coupling can become asymptoticaly free, thus avoiding the problem of the Landau Pole. We classify the emerging UV fixed points and discuss their dependence on transformation prop- erties of the new fermions under the gauge symmetries. We also show that additional constraints on the structure of the BSM sector arise if one requires an asymptotically safe UV fixed point to be connected to the Standard Model through a well-defined RG trajectory. Finally, we discuss experimental signatures of the asymptotically safe scenarios.
Experimental Collaboration
Primary authors: KOWALSKA, Kamila (TU Dortmund); HILLER, Gudrun (Technische Universitaet Dortmund (DE)); LITIM, Daniel (University of Sussex); BOND, Andrew (University of Sussex) Presenter: KOWALSKA, Kamila (TU Dortmund) Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 355 EPS-HEP 2017 / Report of Contributions γγ → γγ scattering in ultrarelativ …
Contribution ID: 452 Type: Parallel Talk
γγ → γγ scattering in ultrarelativistic UPC Friday, 7 July 2017 10:45 (15 minutes)
We will report on our results for light-by-light scattering in ultraperipheral Pb-Pbcollisions at the LHC. We calculate cross section for the elementary γγ → γγ subprocess taking into account the following contributions: (a) box mechanisms with leptons and quarks in the loops, (b) VDM-Regge mechanism (fluctuation of both photons to vector mesons and their interaction) and (c) two-gluon exchange. Our nuclear calculations are based on equivalent photon approximation in the impact parameter space. We use realistic charge form factor of nuclei which is a Fourier transform of the charge distribution in nuclei. Our estimate has shown that ultraperipheral Pb-Pb collisions can be measured at the LHC. This opened a possibility to study the γγ → γγ scattering at the LHC. Our rather optimistic predictions became a motivation for experimental groups to perform corresponding experimental studies. Very recently, the ATLAS Collaboration observed 13 events for light-by-light scattering in ultra- peripheral Pb-Pb collisions. They obtained the cross section of70±20(stat.)±17(syst.) nb. Simultaneously, our Standard Model predictions gave 49±10 nb. Our theoretical calculations were a source of ATLAS Monte Carlo simulation. The ATLAS measurement is a first experimental observation ofthe γγ → γγ mechanism. In the talk, we shall present many differential distributions. We shall discuss a possibility of a separation and identification of different components (three subprocesses mentioned above). We shall present a similar analysis for the pp→ppγγ reaction. This talk will be based mainly on our analyses which were presented inRef. 1 and [2]. 1 M. K{\l}usek-Gawenda, P. Lebiedowicz and A. Szczurek, Phys. Rev. C93 (2016) 044907, [2] M. K{\l}usek-Gawenda, W. Sch\”afer and A. Szczurek, Phys. Lett. B761 (2016) 399.
[3] The ATLAS Collaboration, ATLAS-CONF-2016-111 (2016).
Experimental Collaboration
Primary authors: KŁUSEK-GAWENDA, Mariola (IFJ PAS); SZCZUREK, Antoni (Institute of Nu-
October 6, 2021 Page 356 EPS-HEP 2017 / Report of Contributions γγ → γγ scattering in ultrarelativ … clear Physics)
Presenters: KŁUSEK-GAWENDA, Mariola (IFJ PAS); SZCZUREK, Antoni (Institute of Nuclear Physics) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 357 EPS-HEP 2017 / Report of Contributions Lepton Flavor (Universality) Viola …
Contribution ID: 453 Type: Parallel Talk
Lepton Flavor (Universality) Violation in B Meson Decays Thursday, 6 July 2017 11:30 (15 minutes)
Lepton Flavor (Universality) Violation in B Meson Decays
Even though the LHC searches so far did not unveil the new physics particles, the B-physics exper- iments at LHCb, BaBar and Belle hint towards deviations from Lepton Flavor Universality in both the tree-level and loop-induced B meson semileptonic decays. I will briefly review the models that can address these puzzles, propose one new model and discuss the main predictions that can be tested at LHCb and/or Belle-II. Particular emphasis will be given to Lepton Flavor Violation in B meson decays, which offer a very clean alternative to test the proposed New Physics scenarios.
Experimental Collaboration
Primary authors: BECIREVIC, Damir (CNRS et Universite Paris Sud); ZUKANOVICH FUNCHAL, Renata (USP); Dr KOŠNIK, Nejc (J. Stefan Institute); FAJFER, S (Univ. of Ljubljana and Inst. J. Ste- fan); Mr SUMENSARI, Olcyr (LPT Orsay) Presenter: Mr SUMENSARI, Olcyr (LPT Orsay) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 358 EPS-HEP 2017 / Report of Contributions Cross section measurement of ttba …
Contribution ID: 456 Type: Poster Presentation
Cross section measurement of ttbargamma production in pp collision at sqrt(s) = 8 TeV with the ATLAS experiment
The cross-section for top-quark pair production in association with a photon is measured inproton- proton collisions at the LHC at a center of mass energy of sqrt(s) = 8 TeV. The data with a total integrated luminosity of 20.2 fb-1 collected by the ATLAS detector in 2012 is used. The measure- ment is performed in the single lepton decay channel. The signal region is defined by thefinal state of exactly one high pT lepton, large missing transverse momentum, at least four jets where at least one is being b-tagged and exactly one photon with pT> 15 GeV. The cross-section times the branching ratio is determined in a fiducial region defined in terms of the detector acceptance. The measured ttbargamma fiducial cross-section is in good agreement with the NLO prediction. In addition, the differential cross section as a function of photon pT and eta is measured.
Experimental Collaboration ATLAS
Presenter: GHASEMI, Sara (University of Siegen (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 359 EPS-HEP 2017 / Report of Contributions Test of CP violation in b-hadron d …
Contribution ID: 458 Type: Poster Presentation
Test of CP violation in b-hadron decays using ttbar events in 8 TeV ATLAS data and 13 TeV perspectives
CP violation in weak interactions is well-established in Particle Physics. Nevertheless, the most recent combination of all CP violation measurements is found to be insufficient to explain the size of the matter-antimatter asymmetry present in the Universe. The large number of top-antitop pair events produced in pp collisions at the Large Hadron Collider (LHC) provides a unique source of b-quarks that can be used to probe CP violation in heavy-flavour mixing and decay. This measure- ment focuses on semileptonic top-antitop events where one of the W-bosons decays hadronically and the other one decays leptonically. The charge of the lepton (electron or muon) from theW- boson tags the charge of the b-quark at production. In events where a muon is associated to the semileptonic decay of the b-quark (either directly or after a b → c hadronic transition), two charge asymmetries (CA) and several CP asymmetries, based on the charges of the lepton from the W-boson and this muon, can be measured. The first measurement of the CA and CP asymmetries in heavy flavour b- or c-decays from top-antitop lepton+jets events is presented using the datacol- lected with the ATLAS detector during Run 1 of the LHC. An overview of the future perspectives and improvements of this measurement in Run 2 is also provided.
Experimental Collaboration ATLAS
Presenter: D’ONOFRIO, Adelina (University of London (GB)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 360 EPS-HEP 2017 / Report of Contributions Measurement of the inclusive ttbar …
Contribution ID: 459 Type: Poster Presentation
Measurement of the inclusive ttbar cross-section in pp Collisions at sqrt(s) = 8 TeV with the ATLAS experiment
This poster presents the measurement of the inclusive top-quark pair-production cross-section in the lepton+jets channel with 20.2 fb-1 of 8 TeV data collected with the ATLAS detector at theLHC, using a neural-network discriminant and the reconstructed mass of the hadronically decaying W boson. Events are selected by requiring at least four jets, where at least one of the jets is required to be b-tagged. Signal events from the ttbar processes are separated using a neural-network dis- criminant based on final-state observables. The ttbar production cross-section is obtained froma binned maximum-likelihood fit to the neural-network discriminant and the reconstructed massof the hadronically decaying W boson. The inclusive ttbar cross-section is measured to be consistent with the Standard Model prediction.
Experimental Collaboration ATLAS
Presenter: BANNOURA, Arwa (Bergische Universitaet Wuppertal (DE)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 361 EPS-HEP 2017 / Report of Contributions New results on energy and mome …
Contribution ID: 461 Type: Poster Presentation
New results on energy and momentum conservation for particle emission in A+A collisions at not too high energies
Our presentation will be based on our recent paper 1. We construct a new, simple model of the heavy ion collision. This model is local in the impact parameter plane and appropriate for theSPS energy range. It can be regarded as a new realization of the “fire-streak” approach, originally applied to studies of lower energy nucleus-nucleus reactions. Starting from local energy and momentum conservation, we nicely describe√ the whole centrality dependence of the pion rapidity distribution in Pb+Pb colli- sions at sNN = 17.3~GeV. In particular we explain the broadening of the pion rapidity distribution when going from central to peripheral collisions. The results of our calculations are compared with SPS experimental data. We discuss the resulting implications on the role of energy and momentum conservation for the dynamics of particle production in heavy ion collisions. We conclude that it plays a dominant role in the centrality dependence of the shape of pion rapidity spectra. A specific space-time picture emerges, where the longitudinal evolution of the system strongly depends on the position in the impact parameter (bx, by) plane. In non-central collisions we predict the existance of “streams” of excited matter moving very close to the spectator system in configuration (x, y, z) space. This picture is consistent with our earlier findings on the longitudinal evolution of the system as deduced from electromagnetic effects on charged pion directed flow, and can provide an explanation for specific low-pT phenomena seen in the fragmentation region of Pb+Pb collisions which we also address in this paper.
1 A. Szczurek, M. Kie{\l}bowicz and A. Rybicki, “Implications of energy and momentum conservation for particle emission in A + A collisions at energies available at the CERN Super Proton Synchrotron”, Phys. Rev. C95 (2017) 024908.
Experimental Collaboration
Primary authors: SZCZUREK, Antoni (Institute of Nuclear Physics); RYBICKI, Andrzej (Polish Academy of Sciences (PL))
Presenters: SZCZUREK, Antoni (Institute of Nuclear Physics); RYBICKI, Andrzej (Polish Academy of Sciences (PL))
October 6, 2021 Page 362 EPS-HEP 2017 / Report of Contributions New results on energy and mome …
Session Classification: Poster session
Track Classification: Heavy Ion Physics
October 6, 2021 Page 363 EPS-HEP 2017 / Report of Contributions New mechanisms in the productio …
Contribution ID: 462 Type: Parallel Talk
New mechanisms in the production of two J/ψ quarkonia in proton-proton scattering at the LHC. Saturday, 8 July 2017 10:30 (15 minutes)
The presentation will be based on our paper in preparation 1. We discuss production of pairs of J/ψ in pp collisions in the context of recent results obatained at the LHC at large transverse momenta. 4 The leading-order O(αs) contribution is calculated in both collinear and the kt-factorization approach with the KMR UGDF. We include also two-gluon exchange contribution 6 (O(αs)) (not included routinely). This contribution is calculated only in the collinear approximation. In addition we calculate cross sections for pp → χc(J1)χc(J2). A feed-down from double χc production to double J/ψ production is estimated for a first time. The double parton scattering cross section and differential distributions are calculated using a parametrization of experimental J/ψ differential distributions in rapidity and transverse momentum. Results of our calculations are compared with very recent ATLAS data [2]. We find that the two-gluon exchange mechanism and feed down from double χc production lead to very similar distributions in rapidity distance between the J/ψ mesons as for DPS. Much larger cross sections are obtained in the kt-factorization approach. Including the mechanisms leaves much less room for the DPS contribution which cannot be calcu- lated from first principle. The σeff parameter for DPS needed to describe the ATLAS data is much larger than from previous analyses of double quarkonium production, where a smaller number of mechanisms was included. We present distributions in rapidity distance, two J/ψ invariant mass, azimuthal angle correlations between the two J/ψ mesons and transverse momentum of the pairs of quarkonia. Ihe sum of the four considered contributions reminds experimental ATLAS distributions. 1) A. Cisek, W. Sch\”afer and A. Szczurek, a paper in preparation.
2) ATLAS collaboration, CERN-EP-2016-211, arXiv:161202950.
Experimental Collaboration
Primary authors: SZCZUREK, Antoni (Institute of Nuclear Physics); SCHAEFER, Wolfgang (Insti-
October 6, 2021 Page 364 EPS-HEP 2017 / Report of Contributions New mechanisms in the productio … tute of Nuclear Physics PAN)
Presenters: SZCZUREK, Antoni (Institute of Nuclear Physics); SCHAEFER, Wolfgang (Institute of Nuclear Physics PAN) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 365 EPS-HEP 2017 / Report of Contributions Renormalization in large-N QCD is …
Contribution ID: 464 Type: Parallel Talk
Renormalization in large-N QCD is incompatible with open/closed string duality Saturday, 8 July 2017 10:20 (20 minutes)
Solving by a string theory the ‘t Hooft large-N expansion of QCD is a long-standing problem that resisted all the attempts despite the advent of the celebrated gauge/gravity duality in the frame- work of string theory. We demonstrate that in the canonical string framework such a solution does not actually exist because an inconsistency arises between the renormalization properties of the Yang-Mills (YM) and QCD S matrix at large-N recently worked out in Phys. Rev. D 95, 054010 and the open/closed duality of the would-be canonical string solution.The ultraviolet (UV) finiteness of the large-N YM S matrix is compatible with the universally believed UV finiteness of closed-string diagrams, but open/closed duality turns out to be incompatible with the UV divergence of glueball amplitudes with the insertion of meson loops in large-N QCD. Naively, the inconsistency arises in the would-be canonical string solution because such UV-divergent open-string loop amplitudes are dual to tree closed-string diagrams which are universally believed to be both UV finite – since they are closed-string tree diagrams – and infrared finite because of the glueball mass gap. In fact, the aforementioned incompatibility follows from a low-energy theorem of the Novikov-Shifman- Vainshtein-Zakharov type derived in Phys. Rev. D 95, 054010 that controls the renormalization in QCD-like theories both perturbatively and nonperturbatively in the large-N expansion. The incompatibility extends to the large-N ‘t Hooft expansion of a vast class of confining asymptoti- cally free QCD-like theories including N = 1 SUSY QCD. We suggest a noncanonical way-out for QCD-like theories based on topological strings on noncommutative twistor space.
Experimental Collaboration
Primary author: BOCHICCHIO, Marco (INFN - National Institute for Nuclear Physics) Presenter: BOCHICCHIO, Marco (INFN - National Institute for Nuclear Physics) Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 366 EPS-HEP 2017 / Report of Contributions Properties of Elementary Particle F …
Contribution ID: 465 Type: Poster Presentation
Properties of Elementary Particle Fluxes in Primary Cosmic Rays Measured with AMS on the Space Station
Precision measurements by AMS of fluxes and flux ratios of charged elementary particles incos- mic rays are presented. In the absolute rigidity range ∼60 to ∼500 GV, the antiproton, proton, and positron fluxes are found to have nearly identical rigidity dependence while the electron flux exhibits a different rigidity dependence. Below 60 GV, the antiproton-to-proton, antiproton-to- positron, and proton-to-positron flux ratios each reach a maximum. From ∼60 to ∼500 GV,these flux ratios show no rigidity dependence. These are new and unexpected observations oftheprop- erties of elementary particles in the cosmos. These observations cannot be explained by known models.
Experimental Collaboration AMS
Primary authors: SCHAEL, Stefan (Rheinisch-Westfaelische Tech. Hoch. (DE)); WENG, Zhili (Massachusetts Inst. of Technology (US))
Presenter: SCHAEL, Stefan (Rheinisch-Westfaelische Tech. Hoch. (DE)) Session Classification: Poster session
Track Classification: Astroparticle Physics
October 6, 2021 Page 367 EPS-HEP 2017 / Report of Contributions Experimental limiting factors for t …
Contribution ID: 466 Type: Parallel Talk
Experimental limiting factors for the next generation of µ → eγ searches Saturday, 8 July 2017 10:45 (15 minutes)
The search for the Lepton Flavor Violating decays µ+ → e+γ and µ+ → e+e+e− will reach an unprecedented level of sensitivity within the next five years thanks to the MEG-II and Mu3e experiments. These experiments will take data at the Paul Scherrer Institut where continuous muon beams are delivered at a rate of about 108 muons per seconds. On the same time scale, accelerator upgrades are expected in various facilities, making feasible to reach an intensity of 1010 muons per second. We investigate the experimental limiting factors which will define the sensitivity in the search for µ+ → e+γ with these extremely high beam rates. We also consider some conceptual detector design and evaluate the corresponding sensitivity as a function of the beam intensity.
Experimental Collaboration
Primary authors: PAPA, Angela (PSI); VOENA, Cecilia (Universita e INFN, Roma I (IT)); RIPICCINI, Emanuele (UNIGE); RENGA, Francesco (INFN Roma); CAVOTO, Gianluca (Sapienza Universita e INFN, Roma I (IT))
Presenter: RENGA, Francesco (INFN Roma) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 368 EPS-HEP 2017 / Report of Contributions Toward Precision Top Quark Mea …
Contribution ID: 468 Type: Parallel Talk
Toward Precision Top Quark Measurements in e+e- collisions Saturday, 8 July 2017 12:00 (15 minutes)
This talk presents a review of precision top quark measurements at linear e+e- colliders, with results from the ILC detector concepts and the CLIC detector and physics group. After a brief overview of established elements of the top physics programme, the contribution focuses on new developments in the full-simulation studies of key measurements. These include improvements in the experimental strategies for top quark pair production in the continuum, both at 380-500 GeV and at high energy where top quarks are highly boosted. New results are presented on the potential of a linear collider to measure the top electro-weak couplings, where the precision on the CP-violating dipole moment has been evaluated in full simulation for the first time. The study into the potential of the top quark mass measurement at threshold is updated, including a thorough evaluation of theoretical uncertainties. New results on the reach of searches for rare flavour-changing neutral current decays are presented as well.
Experimental Collaboration LCC, CLIC
Primary authors: VAN DER KOLK, Naomi (Max-Planck-Institut fur Physik (DE)); VAN DER KOLK, Naomi (NIKHEF (NL)); VAN DER KOLK, Naomi (LAL/LLR/CNRS/P2IO) Presenters: VAN DER KOLK, Naomi (Max-Planck-Institut fur Physik (DE)); VAN DER KOLK, Naomi (NIKHEF (NL)); VAN DER KOLK, Naomi (LAL/LLR/CNRS/P2IO) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 369 EPS-HEP 2017 / Report of Contributions Quarkonium production in …
Contribution ID: 470 Type: Parallel Talk
Quarkonium production in nucleus-nucleus collisions with ALICE at the LHC Thursday, 6 July 2017 09:30 (15 minutes)
ALICE is the LHC experiment dedicated to the study of high energy heavy-ion collisions, where the formation of a hot and dense strongly-interacting medium, a Quark-Gluon Plasma (QGP), is ex- pected. Considerable theoretical and experimental efforts have been invested in the last 30 years to study the properties of the QGP. One of the signals of QGP formation is the suppression of quarkonia, bound states√ of quark-antiquark pairs,√ due to color Debye screening. Measurements from Pb-Pb collisions at sNN = 2.76 TeV and sNN = 5.02 TeV revealed a suppression of quarko- nium yields in central collisions, compared to binary-scaled pp collisions. However, the magnitude of the suppression is smaller than what was observed at lower energies at the SPS and RHIC, in- dicating that charmonium (re)generation via the (re)combination of charm and anti-charm quarks plays an important role at LHC energies. The measurement of elliptic flow ofJ/ψ further con- strains the interplay between charmonium suppression and (re)generation mechanisms in Pb-Pb collisions. Bottomonia measurements in heavy-ion collisions shows a stong suppression effect with very little or no (re)generation of bottomonia from the medium or phase boundary. ψ ψ Υ Differential measurements of the nuclear modification factor ofJ/ , (2S) and will be presented√ as a function of centrality, transverse momentum and rapidity for Pb-Pb collisions at srmNN = 5.02 TeV. Measurements of the ψ(2S) over J/ψ ratio as a function of centrality and transverse ⟨ ⟩ ⟨ 2 ⟩ momentum will also be shown. The results on the J/ψ pT and pT as a function of centrality will ψ be√ presented. We will also report the latest results on J/ elliptic flow in \mbox{Pb-Pb} collisions at sNN = 5.02 TeV. A comparison of the ALICE results with model predictions and with other experimental measurements will be presented.
Experimental Collaboration ALICE Collaboration
Primary author: ALICE COLLABORATION Presenter: DAS, Indranil (Saha Institute of Nuclear Physics (IN)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 370 EPS-HEP 2017 / Report of Contributions Charmonium production in p-Pb c …
Contribution ID: 472 Type: Parallel Talk
Charmonium production in p-Pb collisions with ALICE at the LHC Thursday, 6 July 2017 10:30 (15 minutes)
Charmonium states play an important role as probes of the phase transition between hadronic and deconfined matter. In high-energy nucleus-nucleus collisions, where the formation of aplasmaof quarks and gluons is expected, the charmonium production yields are modified by mechanisms as color screening and/or (re)combination of c and ¯c quarks. However, charmonium production is influenced also by cold nuclear matter effects as nuclear shadowing, gluon saturation, energy loss or the cc break-up in the medium. These mechanisms are studied in p-A collisions and their assessment is fundamental to evaluate the size of hot matter effects on charmonia. ALICE measures charmonium states, in p-Pb collisions, down to zero transverse momentum at backward (-4.46< ycms <-2.96) and forward (2.03< ycms <3.53) rapidities in the dimuon decay channel and at mid-rapidity (-1.37< ycms <0.43) in the dielectron one. √ J/ψ and ψ(2S) Run-1 results obtained in p-Pb collisions at sNN= 5.02 TeV will be discussed. The J/ψ nuclear modification factor (RpA), measured as a function of transverse momentum, rapid- ity and centrality, shows a sizeable kinematic dependence and its behaviour is in fair agreement with theoretical models including nuclear shadowing and energy loss. On the contrary, additional mechanisms related to final state interactions, are needed to describe the stronger suppression observed in the production of the loosely bound ψ(2S) state. √ Preliminary Run-2 results on the J/ψ and ψ(2S) production in p-Pb collisions at sNN= 8.16 TeV, ψ at forward√ and backward rapidities, will be presented, together with new mid-rapidity J/ results at sNN= 5.02 TeV. The charmonium RpA will be compared to Run-1 results and to theoretical calculations.
Experimental Collaboration ALICE Collaboration
Primary author: ALICE COLLABORATION Presenter: PAUL, Biswarup (Universita e INFN Torino (IT)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 371 EPS-HEP 2017 / Report of Contributions Low mass dielectron measurement …
Contribution ID: 473 Type: Parallel Talk
Low mass dielectron measurements in pp, p-Pb, and Pb-Pb collisions with ALICE at the LHC Thursday, 6 July 2017 12:15 (15 minutes)
Low mass dielectron measurements in ultra-relativistic heavy-ion collisions bring an important information on the properties of the hot and dense QCD medium and whole space-time evolution of the medium created in heavy-ion collisions. Dielectrons in the mass range below 1 GeV/c2, are from ordinary Dalitz and resonance decays of pseudoscalar and vector mesons. Dielectron invariant mass from short-lived vector mesons is sensitive to medium modifications of the spectral functions that are related to the chiral symmetry restoration at high temperatures. Dielectrons in the intermediate mass region from 1 to 3 GeV/c2 originate mainly from the correlated electron pairs from semi-leptonic decays of charm and beauty quarks, which carry the information on the heavy-quark energy loss. Thermal radiations from the medium contribute to the dielectron yields in a broad mass range and provide information on the thermodynamical properties of the medium.
√Low mass dielectrons have been measured with the ALICE detector at the LHC in pp collisions at s = 7 TeV and p-Pb collisions at sqrtsNN = 5.02 TeV to study and disentangle effects due to the cold nuclear matter. In Pb-Pb collisions, the low mass dielectron mass spectra are measured for different pair pT ranges.
In this talk, we will present a review of LHC Run-1 results from pp, p-Pb, and Pb-Pb collisions and we will discuss the production of virtual photons and heavy quarks. Furthermore, we will discuss the latest results of the analysis of Run-2 pp collisions at 13 TeV and report on the development of our analysis employing multivariable analysis techniques.
Experimental Collaboration ALICE Collaboration
Primary author: ALICE COLLABORATION Presenter: BAILHACHE, Raphaelle (Johann-Wolfgang-Goethe Univ. (DE)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 372 EPS-HEP 2017 / Report of Contributions Quarkonium production in pp coll …
Contribution ID: 474 Type: Parallel Talk
Quarkonium production in pp collisions with ALICE at the LHC Thursday, 6 July 2017 10:30 (15 minutes)
Quarkonia are mesons formed of either a charm and anti-charm quark pair(J/ψ, ψ(2S)), or a beauty and anti-beauty quark pair (Υ(1S), (2S) and (3S)). In high-energy hadronic collisions such as those delivered by the LHC between 2010 and 2016, quarkonium production results from the hard scattering of two gluons in a process which occurs very early in the collision followed by the hadronization of the heavy quark pair in a bound state. In pp collisions, quarkonium mea- surements help characterize production mechanisms. These same measurements also provide a reference baseline for p-A and A-A measurements which in turn quantify cold and hot nuclear properties of the Quark-Gluon Plasma (QGP). While charmonia are produced rather abundantly in such collisions, interpreting the measurement of their inclusive production is complicated by the presence of a sizable non-prompt contribution from the decay of b-hadrons. Bottomonia on the other hand have much smaller production cross sections but no non-prompt contribution. More- over, their heavier mass makes them more suitable for perturbative QCD calculations.
In this presentation we will report on forward rapidity√ (2.5 < y < 4) J/ψ and ψ(2S) production measured in pp collisions at center of mass energies s = 5.02 and 13~TeV,√ using data collected at the LHC in 2015. Together with similar measurements performed at s = 2.76, 7 and 8 TeV, these results constitute a stringent test for models of charmonium production. In particular, they will be compared to NRQCD and FONLL calculations, which describe prompt and non-prompt charmonium production respectively. Results on forward-rapidity Υ production in pp collisions will also be discussed. The availability at the LHC of the largest collision energy in pp collisions allows a significant ad- vance in the measurement of J/ψ production as function of event multiplicity. The interesting relative increase of the J/ψ production rate in high multiplicity pp collisions observed with data at the LHC at s√=7 TeV and at RHIC at s√=200 GeV is studied now at unprecedented multiplic- ities for pp collisions. This will impose tight constrains on model calculations and improve the understanding on the origin of this enhancement. The newest measurement performed at mid- rapidity in pp collisions at s√ = 13 TeV in the dielectron decay channel, facilitated by triggering on high-multiplicity events, allows the comparison to J/ψ production in p-Pb collisions at similar multiplicities. We will compare our newest measurements on the J/ψ yields as a function of event multiplicity in pp collisions at s√ = 13 and 5.02 TeV to those obtained in p-Pb collisions at sNN‾‾‾‾√ = 5.02 TeV at mid- and forward rapidity and at sNN‾‾‾‾√ = 8.16 TeV at forward rapidity. The results will also be discussed in comparison to predictions from available theoretical models and to data at lower energies.
Experimental Collaboration ALICE Collaboration
Presenter: CRKOVSKA, Jana (Institut de Physique Nucleaire Orsay (FR)) Session Classification: QCD and hadronic physics
October 6, 2021 Page 373 EPS-HEP 2017 / Report of Contributions Quarkonium production in pp coll …
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 374 EPS-HEP 2017 / Report of Contributions Improved Search for a Light Sterile …
Contribution ID: 476 Type: Parallel Talk
Improved Search for a Light Sterile Neutrino at Daya Bay Friday, 7 July 2017 12:45 (15 minutes)
The Daya Bay Reactor Neutrino Experiment currently holds for the most precise measurement of the third neutrino mixing angle θ13~8.4^o, which unlocked the gateway of studying the CP viola- tion in the lepton sector, and the most precise measurement of |Δm^2_32|. The multiple detectors at different locations also allow for using relative energy spectral analysis to search foralight sterile neutrino with corresponding mass-squared splitting Δm^2_41 below 0.3 eV^2. This result was combined with those of Bugey-3 and MINOS to set limits in the anomalous muon to electron neutrino appearance oscillation. For Δm^2_41 above 0.3 eV^2, Daya Bay tested the foundation of the sterile neutrino explanation of the reactor antineutrino anomaly through measurements of reactor flux, energy spectrum, and fuel evolution. In this talk, we will present the latest results.
Experimental Collaboration Daya Bay experiment
Primary author: QIAN, Xin (Brookhaven National Laboratory) Presenter: QIAN, Xin (Brookhaven National Laboratory) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 375 EPS-HEP 2017 / Report of Contributions Readout board proposal for the ne …
Contribution ID: 481 Type: Poster Presentation
Readout board proposal for the next generation of Pixel Detectors: reasons, status and results in ATLAS
At LHC, the design luminosity, 1034 cm-2 s-1, has already been reached during Summer 2016. LHC is planning, in the short term future, to further enhance the luminosity, resulting in a higher trigger frequency and an increased pileup. These factors constitute a challenge for the data readout since the rate of data to be transmitted depends on both pileup and trigger frequency. In theATLAS experiment, the effect of the increased luminosity is most evident in the Pixel Detector, which is the detector closest to the beam pipe. In order to face the difficult experimental challenges, the readout system was upgraded during the last few years. The main purpose of the upgrade was to provide a higher bandwidth by exploiting recent technologies. The new readout system is composed by two paired electronic boards, Back Of Crate (BOC) and ReadOut Driver (ROD). In this presentation the main readout limitation related to increased luminosity will be discussed as well as the strategy and the technological solutions adopted in order to cope with the future operational challenges. In addition the general progress and achievement will be presented.
Experimental Collaboration ATLAS
Primary author: GIANGIACOMI, Nico (Universita e INFN, Bologna (IT)) Presenter: GIANGIACOMI, Nico (Universita e INFN, Bologna (IT)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 376 EPS-HEP 2017 / Report of Contributions Nearly perturbative QCD coupling …
Contribution ID: 482 Type: Parallel Talk
Nearly perturbative QCD coupling with lattice-motivated zero IR limit Friday, 7 July 2017 11:56 (13 minutes)
The product of the gluon dressing function and the square of the ghost dressing function intheLan- dau gauge can be regarded to represent, apart from the inverse power corrections 1/Q2n, a nonper- 2 2 2 turbative generalization A(Q ) of the perturbative QCD running coupling a(Q ) (≡ αs(Q )/π). Recent large volume lattice calculations for these dressing functions strongly indicate thatsuch a generalized coupling goes to zero as A(Q2) ∼ Q2 when the squared momenta Q2 go to zero (Q2 ≪ 1 GeV2). We construct such a QCD coupling A(Q2) which fulfills also various other phys- ically motivated conditions. At high momenta it becomes the underlying perturbative coupling a(Q2) to a very high precision. And at intermediately low momenta Q2 ∼ 1 GeV2 it gives results consistent with the data of the semihadronic τ lepton decays as measured by OPAL and ALEPH. The coupling is constructed in a dispersive way, ensuring as a byproduct the holomorphic behav- ior of A(Q2) in the complex Q2-plane which reflects the holomorphic behavior of the spacelike QCD observables. Application of the Borel sum rules to τ-decay V + A spectral functions al- lows us to obtain values for the gluon (dimension-4) condensate and the dimension-6 condensate, which reproduce the measured OPAL and ALEPH data to a significantly better precision than the perturbative MS coupling (+OPE) approach. The comparison with the experimental V -channel Adler function, related with the e+e− → hadrons ratio, at low Q2 ∼ 1 GeV2, also gives results considerably better than with the usual MS pQCD+OPE approach.
Experimental Collaboration
Primary author: Dr CVETIC, Gorazd (Universidad Tecnica Federico Santa Maria) Presenters: Dr CVETIC, Gorazd (Universidad Tecnica Federico Santa Maria); CVETIC, Gorazd
Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 377 EPS-HEP 2017 / Report of Contributions Cosmological results from the Kilo …
Contribution ID: 483 Type: Parallel Talk
Cosmological results from the Kilo Degree Survey Friday, 7 July 2017 14:30 (15 minutes)
Gravitational lensing represents a unique tool to study the dark Universe. In the weak lensing regime small distortions in the images of galaxies caused by the large-scale structure can be de- tected over the whole sky. Measuring these coherent distortions yields cosmological insights com- plementary to other probes like the cosmic microwave background (CMB). Ongoing wide-field imaging surveys exploit this to come up with competitive constraints on important cosmological parameters. In this talk I will concentrate on recent results from the ongoing European Kilo Degree Survey (KiDS) and show a mild tension of these results with CMB measurements from the Planck mission when the standard cosmological model is assumed. Possible solutions to this discrepancy using extensions to the standard model of cosmology and future developments will be discussed. I will conclude with an outlook towards missions like Euclid, LSST, and WFIRST.
Experimental Collaboration
Primary author: HILDEBRANDT, Hendrik Presenter: HILDEBRANDT, Hendrik Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 378 EPS-HEP 2017 / Report of Contributions Quasi-sterile neutrinos at long- …
Contribution ID: 485 Type: Parallel Talk
Quasi-sterile neutrinos at long-baseline oscillation experiments Saturday, 8 July 2017 12:15 (15 minutes)
Sterile neutrinos may be part of a quasi-hidden sector that interacts with Standard Model particles via a heavy mediator. In the case where two (or more) sterile neutrinos have a flavor-changing coupling to a new boson which also couples to nucleons, the heavier state N2 may decay into the lighter state N1 and a pair of Standard Model particles. If the mass difference between the sterile + − neutrinos is large enough, the N2 → N1π π process can lead to striking signatures at neutrino detectors. In particular, the light sterile neutrino may be produced through oscillations and then up-scatter creating a pion pair in the detector which is displaced from a DISevent.
Experimental Collaboration theory
Primary author: Dr DOBRESCU, Bogdan (Fermilab) Presenter: Dr DOBRESCU, Bogdan (Fermilab) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 379 EPS-HEP 2017 / Report of Contributions Exotic signatures of new gauge bo …
Contribution ID: 486 Type: Parallel Talk
Exotic signatures of new gauge bosons Saturday, 8 July 2017 10:00 (15 minutes)
New gauge bosons with renormalizable couplings to quarks but not to leptons must interact with additional fermions (”anomalons”) required to cancel the gauge anomalies. Analyzing the decays of such leptophobic bosons into anomalons, I show that they produce final states involving leptons at the LHC. Resonant production of a flavor-universal leptophobic Z′ boson leads to cascade decays via anomalons, whose signatures include Higgs or electroweak bosons, and missing energy. A Z′ boson that couples to the right-handed quarks undergoes cascade decays that violate lepton universality and include signals with two leptons and Higgs bosons.
Experimental Collaboration theory
Primary author: DOBRESCU, Bogdan (Fermilab) Presenter: DOBRESCU, Bogdan (Fermilab) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 380 EPS-HEP 2017 / Report of Contributions Possible effect of mixed phase and…
Contribution ID: 487 Type: Poster Presentation
Possible effect of mixed phase and deconfinement upon spin correlations in the ΛΛ¯ pairs generated in relativistic heavy-ion collisions
Spin correlations for the ΛΛ and ΛΛ¯ pairs, produced in relativistic heavy-ion collisions, and related angular correlations at the joint registration of space-parity nonconserving hadronic decays of two hyperons are theoretically analyzed. These correlations give important information about the character and mechanism of multiple processes, and the advantage of the ΛΛ and ΛΛ¯ systems over others is due to the fact that the P -odd decays Λ → p + π−, Λ¯ → p¯+ π+ serve as effective analyzers of spin states of the Λ and Λ¯ particles. The correlation tensor components can be derived by the method of “moments” – averaging the combinations of trigonometric functions of proton (antiproton) flight angles over the double angular distribution of flight directions for products of two decays. The properties of the “trace” T of the correlation tensor (a sum of 3 diagonal components), determining the angular correlations and the relative fractions of the triplet and singlet states of respective pairs, are discussed.
Spin correlations for pairs of identical and non-identical particles (ΛΛ, ΛΛ¯) are generally considered here within the conventional model of one-particle sources, implying that correlations vanish at enough large relative momenta. However, under these conditions ( especially at ultrarelativistic energies ), for two non-identical particles (ΛΛ¯) the two-particle anni- hilation sources – quark-antiquark and two-gluon ones – start playing a noticeable role and lead to the difference of the correlation tensor from zero. In particular, such a situation may arise, when the system passes through the “mixed phase” and – due to the multiple production of free quarks and gluons in the process of deconfinement of hadronic matter – the number of two-particle sources strongly increases.
Experimental Collaboration
Primary authors: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ); Dr LYUBOSHITZ, Vladimir (Joint Institute for Nuclear Research, Dubna)
Presenter: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ) Session Classification: Poster session
Track Classification: Heavy Ion Physics
October 6, 2021 Page 381 EPS-HEP 2017 / Report of Contributions Search for ttH production in high- …
Contribution ID: 488 Type: Poster Presentation
Search for ttH production in high-pT regimes with the ATLAS detector
The associated production of the Higgs boson with a pair of top/anti-top quarks (ttH) istheonly process providing the direct access to the measurement of the Yukawa coupling between the Higgs boson and the top quark. The presented results exploit the data collected during 2015 and2016by the ATLAS experiment during LHC collisions at a center-of-mass energy of 13 TeV. Multivariate techniques are used in order to discriminate between signal and background events, dominated by the tt production. The analysis uses algorithms specifically designed to cope with the difficult reconstruction of very high-Pt jets. These algorithms, called boosted techniques, take advantage of the peculiar substructure of the high-Pt jets.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: BIONDI, Silvia (Universita e INFN, Bologna (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 382 EPS-HEP 2017 / Report of Contributions Search for the associated producti …
Contribution ID: 489 Type: Poster Presentation
Search for the associated production of a Higgs boson and a top quark pair in multilepton (2 leptons, no hadronically-decaying τ lepton candidates and 4 leptons) final states with the ATLAS detector.
The Yukawa coupling of the Higgs boson to the top quark is a key parameter of the Standard Model. It can be constrained using the associated production process pp → ttH + X. A search for this process using final states with multiple leptons, primarily targeting the decays H→ WW∗ and H → ττ, has been performed using the data set recorded by the ATLAS detector in 2015 and 2016 at a center of mass energy √s= 13 TeV. The analysis presented here includes two of the four final states distinguished by the numberand flavor of leptons: two same-charge light leptons ( e or µ ) and no hadronically-decaying τlepton candidates (2l0τhad) and four light leptons (4l), the remaining channels not covered being two same-charge light leptons and one hadronically-decaying τ lepton candidate (2l1τhad) and three light leptons (3l). The different background sources are also presented for each channel considered. The latest best-fit value for the ratio of observed versus
Standard Model cross sections is then given as well as an upper limit on this parameter.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: DUMITRIU, Ana Elena (IFIN-HH Bucharest (RO), CPPM (Aix-Marseille Université, CNRS/IN2P3, FR)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 383 EPS-HEP 2017 / Report of Contributions Identification of the Higgs boson p…
Contribution ID: 491 Type: Poster Presentation
Identification of the Higgs boson produced in association with top quark pairs in proton-proton collisions: an analysis of the final state containing three leptons with the ATLAS detector
The associated production of the Higgs boson with top quarks (ttH) allows to constrain thetop Yukawa coupling. This coupling is a key parameter of the Standard Model and its direct study through the ttH production mode is one of the most challenging in the ATLAS physics program at LHC. An explorative analysis for this process has been performed using Run2 data recorded by the ATLAS detector in 2015 and 2016 at a center of mass energy of 13 TeV. The studied final has three charged light leptons (electrons and muons) and hadronic jets. The primary targets are the Higgs boson decays in vector bosons and tau leptons (H → WW, H → ZZ, H → ττ). This poster will describe the physical object definition, the analysis strategy, the estimation and the modeling of the main backgrounds. An event reconstruction technique has been performed in order to disentangle the ttH signal and the main backgrounds. The event reconstruction hasbeen additionally used as input for a multivariate analysis technique.
Results are shown in terms of the ratio between the measured cross section and the one predicted by the Standard Model.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: VECCHIO, Valentina (Universita e INFN, Roma Tre (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 384 EPS-HEP 2017 / Report of Contributions BDTs in the Search for ttH Produc …
Contribution ID: 492 Type: Poster Presentation
BDTs in the Search for ttH Production with Higgs Decays to bb at ATLAS
The observation of Higgs boson production in association with a top quark pair allows thedirect measurement of the top quark Yukawa coupling, a vital test to validate the Higgs mechanism within the Standard Model. The ATLAS search for this process relies on Boosted Decision Trees for Higgs reconstruction and signal-background discrimination. The employment of BDTs in the analysis of sqrt(s)= 13 TeV proton-proton collisions, collected with the ATLAS detector at the CERN LHC in 2015 and 2016, is presented. Higgs boson decays to two bottom quarks, and top pair decays with one or two leptons are considered.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: GLAYSHER, Paul (DESY) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 385 EPS-HEP 2017 / Report of Contributions Searches for rare exclusive decays …
Contribution ID: 496 Type: Poster Presentation
Searches for rare exclusive decays of the Higgs boson to a light meson and a photon with the ATLAS detector
A lot of progress on the study of the properties of the Higgs boson has been made since its dis- covery, however little is still known about the Higgs boson couplings to light quarks. Direct measurements of the Higgs boson decays to pairs of light-quarks are challenging due to the over- whelming hadronic backgrounds. A new window to experimentally access these couplings opens through the search for Higgs boson decays to a meson and a photon, and gives the possibility to search for new physics in this sector. The latest results from the ATLAS experiment on this front are presented and discussed.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: OWEN, Rhys Edward (University of Birmingham (GB)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 386 EPS-HEP 2017 / Report of Contributions Property measurements of the Hig …
Contribution ID: 498 Type: Poster Presentation
Property measurements of the Higgs boson in the diphoton decay channel with the ATLAS detector at the LHC
This poster presents the latest measurements of the Higgs boson properties measured intheH → γγ decay channel using 36.1fb −1 of proton-proton collision data taken at √ s = 13TeV bythe ATLAS experiment at the LHC. Fiducial and differential cross section measurements are presented in a variety of phase space regions and as a function of several kinematic variables, to be compared with the Standard Model Higgs predicted distributions.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: HU, Yifan (Chinese Academy of Sciences (CN)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 387 EPS-HEP 2017 / Report of Contributions Search for resonant and enhanced …
Contribution ID: 499 Type: Poster Presentation
Search for resonant and enhanced non-resonant di-Higgs production in the γγbb channel with data at 13 TeV with the ATLAS detector
This poster presents the run 2 search for di-Higgs production in the yybb channel. In theStandard Model, this process provides a lens on the Higgs self-coupling and it is enhanced, resonantly or non-resonantly, in many extensions to the SM. It is appealing thanks to a clean diphoton trigger, relatively small backgrounds, and excellent diphoton mass resolution. It is also particularly impor- tant in the range from 260 to 400 GeV, where QCD backgrounds and combinatorics make other channels (4b, bbtautau) challenging.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: CERDA ALBERICH, Leonor (Univ. of Valencia and CSIC (ES)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 388 EPS-HEP 2017 / Report of Contributions Search for new phenomena in the …
Contribution ID: 500 Type: Poster Presentation
Search for new phenomena in the diphoton final state using 37 fb-1 of data collected at sqrt(s) = 13 TeV in 2015 and 2016 with the ATLAS detector
New high-mass scalar states decaying into two photons are predicted in many extensions of the Standard Model. The diphoton final state provides a clean experimental signature with excellent invariant mass resolution and moderate backgrounds.
A search for such states with masses above 200 GeV is presented here, using 37 fb-1 of data collected by the ATLAS experiment in 2015 and 2016 at sqrt(s)=13 TeV. This search follows the report by the ATLAS and CMS collaborations of an excess with respect to the Standard Model continuum background in the diphoton invariant mass spectrum near the mass value of 750 GeV in 3.2–3.3 fb−1 of s = 13 TeV proton–proton (pp) collision data recorded in 2015.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: MEIDECK, Thomas (Centre National de la Recherche Scientifique (FR)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 389 EPS-HEP 2017 / Report of Contributions DARWIN: towards the ultimate da …
Contribution ID: 501 Type: Parallel Talk
DARWIN: towards the ultimate dark matter detector Friday, 7 July 2017 12:00 (15 minutes)
DARWIN (DARk matter WImp search with liquid xenoN) will be an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber. The first goal of Darwin will be to look for Weakly Interacting Massive Particles (WIMPs) pushing the sensitivity until the background of natural sources of neutrinos will be the dominant back- ground. DARWIN’s excellent sensitivity will allow to search for solar axions, galactic axion-like particles and the neutrinoless double-beta decay of 136Xe. It will also measure the low-energy solar neutrino flux with <1% precision, observe coherent neutrino-nucleus interactions, andbean excellent observatory for galactic supernovae. I will present DARWIN’s detector concept, discuss its physics reach, main sources of background and current activities.
Experimental Collaboration DARWIN
Primary author: Prof. ARNEODO, Francesco (New York University Abu Dhabi) Presenter: Prof. ARNEODO, Francesco (New York University Abu Dhabi) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 390 EPS-HEP 2017 / Report of Contributions Strangeness production in Pb-Pb c …
Contribution ID: 502 Type: Parallel Talk
Strangeness production in Pb-Pb collisions with ALICE at the LHC Thursday, 6 July 2017 16:45 (15 minutes)
We present new ALICE results on the√ production of strange and multi-strange hadrons in Pb-Pb collisions at the top LHC energy of sNN = 5.02 TeV. Strangeness production measurements are powerful tools for the study of the thermal properties of the deconfined state of QCD matter, the Quark-Gluon Plasma. Thanks to its unique tracking and PID capabilities, ALICE is able to measure weakly decayingpar- ticles through the topological reconstruction of the identified hadron daughters. S Transverse momentum spectra of K0 , Λ, Ξ and Ω at central rapidity are presented as function of the collision centrality. S The so-called baryon anomaly in the ratio Λ/K0 is examined to probe particle production mech- anisms: the position of the peak is sensitive to recombination processes, the high pT part can provide revealing insights on fragmentation and, finally, the steepness of the rising trend featur- ing for pT ≤ 2 GeV/c can be connected to the hydrodynamic expansion of the system. In order to study strangeness enhancement, hyperon yields are normalised to the measurements of pion production in the corresponding centrality classes. Comparisons to lower energy results as well as to different collision systems will be shown. This offers a complete experimental picture that is used as a benchmark for several commonly adopted phenomenological models, such as the thermal-statisical hadronisation approach.
Experimental Collaboration ALICE
Primary author: COLLABORATION, ALICE Presenter: KALINAK, Peter (Slovak Academy of Sciences (SK)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 391 EPS-HEP 2017 / Report of Contributions Unidentified and identified hadron …
Contribution ID: 503 Type: Parallel Talk
Unidentified and identified hadron production in Pb-Pb collisions at the LHC with ALICE Thursday, 6 July 2017 17:00 (15 minutes)
In this talk, the centrality dependence of the pT spectra of unidentified charged hadrons as well as of charged√ pions, kaons, (anti)protons and resonances in Pb-Pb collisions at the unprecedented energy of sNN = 5.02 are presented. The pT-integrated particle yields are compared to predic- tions from thermal-statistical models and the evolution of the proton to pion, kaon to pion and resonance to non-resonance particle ratios as a function of collision energy and centrality are dis- cussed. Hydrodynamic and recombination models are tested against the measured spectral shapes at low and intermediate transverse momenta. The measurement of a comprehensive set of resonances with lifetimes in a wide range of1-46fm/c is suitable for a systematic study of the role of re-scattering and regeneration in the hadronic phase. The study of the energy dependence of the resonance to non-resonance particle ratio addresses the question whether the picture of the dominance of re-scattering effects over regeneration still holds at the higher energy, where the density and the volume of the system are expected to be larger. Finally, the nuclear modification factor for the different particle species, which are found tobe identical within the respective systematic uncertainties for transverse momenta above 8 GeV/c, will be shown.
Experimental Collaboration ALICE
Primary author: COLLABORATION, ALICE Presenter: OTWINOWSKI, Jacek Tomasz (Polish Academy of Sciences (PL)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 392 EPS-HEP 2017 / Report of Contributions Recent results on (anti-)(hyper- …
Contribution ID: 504 Type: Parallel Talk
Recent results on (anti-)(hyper-)nuclei production in pp, p-Pb and Pb-Pb collisions with ALICE Thursday, 6 July 2017 17:30 (15 minutes)
√ At the end of 2015 the ALICE experiment at the LHC has recorded Pb-Pb collisions at sNN = 5.02 TeV, that complement the dataset from Run 1. Both datasets contain a variety of (anti- )(hyper-)nuclei produced in the collisions, namely (anti-)deuteron, (anti-)triton, (anti-)helium-3, (anti-)alpha√ and (anti-)hypertriton. Furthermore, the large high√ quality data sample of pp colli- sions at s = 7 TeV and 13 TeV and in p-Pb collisions at sNN = 5 TeV at the LHC with the ALICE detector allows for a systematic study of the light (anti-)nuclei production in these colli- sion systems. The identification of these (anti-)(hyper-)nuclei is based on the energy loss in the TimeProjec- tion Chamber and the velocity from the Time-Of-Flight detector. In addition, the Inner Tracking System is used to distinguish secondary vertices originating from weak decays. This is of particu- lar importance for the measurement of (anti-)(hyper-)triton which decays weakly and has a decay length of several centimeters. The decay mode into a (anti-)helium-3 and a oppositely charged pion is the one with the largest reconstruction efficiency, but the largest branching ratio is given bythe 3-body decay mode into a deuteron, a proton and a charged pion. The study of (anti-)(hyper-)nuclei production at both energies will be discussed and findings will be compared to model predictions. Emphasis will be put on new results of the hypertriton in its 2- and 3-body decay modes. New results on deuteron production as a function of multiplicity in pp and p-Pb collisions will be presented, as well as the measurement of helium-3 in p-Pb collisions. The goal is to study produc- tion mechanisms such as coalescence in small systems, and to compare them to those in heavy-ion collisions. Finally, the status of the ongoing searches for hypothetical strange pentaquarks and dibaryons will be discussed, together with perspectives for studies with the increased statistics from the LHC Run II.
Experimental Collaboration ALICE
Primary author: COLLABORATION, ALICE Presenter: TROGOLO, Stefano (Universita e INFN Torino (IT)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 393 EPS-HEP 2017 / Report of Contributions New results on the multiplicity an …
Contribution ID: 505 Type: Parallel Talk
New results on the multiplicity and centre-of-mass energy dependence of identified particle production in pp collisions with ALICE Thursday, 6 July 2017 09:00 (15 minutes)
The study of identified particle production as a function of the proton-proton (pp) collision energy and multiplicity is a key tool for understanding similarities and differences between small and large interacting systems. We report on new measurements of the production of unidentified charged 0 ∗0 hadrons√ as well as of pions, kaons, protons, KS, Λ, Ξ, Ω,K and ϕ measured in pp collisions for s ranging from√ 0.9 to 13 TeV. The multiplicity dependence of identified particle spectra and yields is presented for s = 5, 7 and 13 TeV and compared to results obtained in proton-lead (p-Pb) and lead-lead (Pb-Pb) collisions. The results unveil intriguing similarities among systems and energies. While spectral shapes at high transverse momenta (pT ≥ 10 GeV/c) do not evidence a significant dependence on event multiplicity, a strong evolution at low and intermediate pT is observed. The production rates of strange hadrons are found to increase more than those of non-strange particles, showing an enhancement pattern with multiplicity which does not depend on the collision energy. Even if the multiplicity dependence of spectral shapes can be qualitatively described by commonly- used Monte Carlo event generators, the evolution of integrated yield ratios is poorly described by these models.
Experimental Collaboration ALICE
Presenter: BENCEDI, Gyula (Hungarian Academy of Sciences (HU)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 394 EPS-HEP 2017 / Report of Contributions Search for long-lived, massive part …
Contribution ID: 508 Type: Poster Presentation
Search for long-lived, massive particles in events with displaced vertices and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector
A search for long-lived, massive particles, as generically predicted by many theories beyond the Standard Model, is presented. The search targets final states with large missing transverse momentum andat least one high-mass displaced vertex with five or more tracks, and used 32.7 fb−1 of √s=13 TeV pp collision data collected by theATLAS detector at the LHC. The observed yield is consistent with the expected background. The results are used to extract 95% CL exclusion limits on the production of long-lived gluinos with masses up to 2.2 TeV in a simplified model inspired by Split Supersymmetry.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: OTONO, Hidetoshi (Kyushu University (JP)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 395 EPS-HEP 2017 / Report of Contributions Search for top squark pair product …
Contribution ID: 509 Type: Poster Presentation
Search for top squark pair production and decay in four bodies, with two leptons in the final state, at the ATLAS Experiment with LHC Run2 data
Supersymmetry (SUSY) still remains one of the most interesting theories which are candidates to describe physics beyond the Standard Model, even if the latest Run1 results and interpretations have so far shown no experimental evidence for the existence of superparticles. If SUSY exists, the strong production of coloured SUSY particles is expected to be the dominant production process at the LHC. In this poster a search for the top quark Supersymmetric partner (stop) pairs production is reported, using 36.1 fb−1 of proton-proton collision data collected by the ATLAS experiment in 2015 and 2016. The analysis targets the stop decaying, with 100% branching ratio, into abquark, neutralino (the lighest Supersymmetric particle), a fermion and an antifermion, with a final state including two isolated electrons or muons and missing transverse momentum. The results are interpreted in the stop and neutralino mass plane in terms of exclusion limits,since no excess in data has been found for this analysis.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: LONGO, Luigi (INFN Lecce e Universita del Salento (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 396 EPS-HEP 2017 / Report of Contributions Search for top squark pair product …
Contribution ID: 510 Type: Poster Presentation
Search for top squark pair production in final states with two leptons at LHC Run 2 with the ATLAS detector
Although no experimental evidence has been found during LHC Run1, supersymmetry (SUSY) remains one of the most promising and motivated Standard Model extensions. Focusing the at- tention on its minimal formulation, the Minimal Supersymmetric Standard Model (MSSM), where the multiplicative quantum number R-parity is conserved, the latest results in searching for pair production of top squarks decaying to a bottom quark and a chargino1 or to a top quarkand the lightest supersymmetric particle (neutralino) in a final state with 2 leptons are presented, us- ing proton-proton collision data collected by the ATLAS experiment during 2015 and 2016 at the center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 36.1 fb−1. Both the decay modes are searched in the context of a simplified model where a branching ratio of 100% is assumed for both signal models.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: LONGO, Luigi (INFN Lecce e Universita del Salento (IT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 397 EPS-HEP 2017 / Report of Contributions Search for top squarks in final stat …
Contribution ID: 511 Type: Poster Presentation
Search for top squarks in final states with one electron or muon in sqrt{s}=13 TeV} pp collisions with the ATLAS detector
Natural supersymmetry suggests a relatively light top squark, which is the supersymmetric partner of the top quark, with a mass that might be within the discovery reach of the LHC. A search for direct top squark pair production, in final states with one isolated electron or muon, multiple jets and missing transverse momentum, is presented. The analysis is performed using data from proton-proton collisions collected in 2015 and 2016 at a center-of-mass energy of sqrt{s}=13 TeV by the ATLAS collaboration. The search focuses on particular top squark decay scenarios leading to a neutralino in the finalstate, which escapes the detector and produces large missing transeverse momentum. The neutralino is taken to be the lightest supersymmetric particle (LSP), which can serve as a possible candidate for dark matter. No significant excesses in data compared to the expectations from Standard Model processes are observed, hence the results are interpreted as exclusion limits at 95% confidence level on the mass of the top squark.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: HANDL, David Michael (Austrian Academy of Sciences (AT)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 398 EPS-HEP 2017 / Report of Contributions Search for top squarks in final stat …
Contribution ID: 512 Type: Poster Presentation
Search for top squarks√ in final states with one isolated lepton in s=13 TeV pp collisions with the ATLAS detector
One of the most important parameters in supersymmetry is the mass of the supersymmetric part- ner of the third generation quarks. The scalar top quark mass lighter than 1 TeV is favored inmany theories, but no evidence has not been found in the previous searches. Therefore the search needs to be performed more extensively considering various LSP scenarios with increased integrated lu- minosity. In this poster, the latest results in the search for scalar top quarks√ using one isolated lepton, jets, and missing transverse momentum with ATLAS detector in s=13 TeV pp collisions, are presented.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: YAMAZAKI, Tomohiro (University of Tokyo (JP)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 399 EPS-HEP 2017 / Report of Contributions Stop searches in compressed scena …
Contribution ID: 513 Type: Poster Presentation
Stop searches in compressed scenarios with the ATLAS detector at the LHC
In order for supersymmetry to stabilise the Higgs boson mass, the mass of the scalar partner of the top quark (the stop) is required to be below around 1 TeV. The decay of the stop depends onthe mass difference between the stop itself and the lightes neutralino, assumed to be stable. Scenarios where this mass difference is small are usually referred to as “compressed”. This poster presents a summary of stop searches targeting compressed scenarios. Using 36.5 fb−1 of proton-proton collisions collected by the ATLAS detector at a centre-of-mass energy of sqrts = 13 TeV, these searches significantly extend the sensitivity of those performed by ATLAS during Run1ofthe LHC.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: JONES, Samuel David (University of Sussex (GB)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 400 EPS-HEP 2017 / Report of Contributions Seeking a light CP-odd Higgs state
Contribution ID: 514 Type: Poster Presentation
Seeking a light CP-odd Higgs state
We propose to look for the light CP-odd state through the decay h → P ℓ+ℓ−, where P stands for a pseudoscalar quarkonia. We show that the corresponding branching fraction can be enhanced as much as by a factor ~20-30 in the models with two Higgs doublets of Type I, II or X. In this study we consider mA < mh but larger than ~20 GeV. We then show a special case of a very light CP-odd Higgs, and show how its presence can be efficiently tested through ηc,b → ℓℓ modes.
Experimental Collaboration
Primary author: Dr BECIREVIC, Damir (LPT Orsay) Co-authors: Dr MELIC, Blazenka (IRB Zagreb); Dr PATRA, Monalisa (IRB Zagreb); Mr SUMENSARI, Olcyr (LPT Orsay)
Presenter: Dr BECIREVIC, Damir (LPT Orsay) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 401 EPS-HEP 2017 / Report of Contributions The ENUBET project: high precisi …
Contribution ID: 515 Type: Parallel Talk
The ENUBET project: high precision neutrino flux measurements in conventional neutrino beams Thursday, 6 July 2017 16:45 (15 minutes)
The precision era of neutrino physics requires measurements of absolute neutrino cross sections at the GeV scale with exquisite (1%) precision. These measurements are presently limited by the uncertainties on neutrino flux: the goal of the ERC ENUBET Project is to demonstrate thatsuch uncertainties can be removed employing novel monitoring techniques of the leptons at the neu- trino source. In particular, a reduction of these systematics by one order of magnitude can be achieved monitoring the positron production in the decay tunnel originating from the K_e3 decays of charged kaons in a sign and momentum selected narrow band beam. In this talk we present the results obtained during the first year of the Project on beamline simulation, rate and doseas- sessment, detector prototyping and evaluation of the physics reach. In particular, we present the Reference Design issued by the Collaboration in spring 2017, discussing its achievements and the remaining technical challenges.
Experimental Collaboration ENUBET
Primary author: TERRANOVA, Francesco (Universita & INFN, Milano-Bicocca (IT)) Presenter: TERRANOVA, Francesco (Universita & INFN, Milano-Bicocca (IT)) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 402 EPS-HEP 2017 / Report of Contributions D∗ polarization as a probe to discr …
Contribution ID: 516 Type: Poster Presentation
D∗ polarization as a probe to discriminate new physics in B¯ → D∗τν¯
The confirmation of excess in RD∗ at the LHCb is an indication of lepton flavor non-universality. Various different new physics operators and their coupling strengths, which provide a good fit to RD, RD∗ and q2 spectra, were identfied previously. In this work, we try tofind angular observables in B¯ → D∗τν¯ which enable us to distinguish between these new physics ∗ 2 operators. We find that D polarization fraction fL(q ) is a good discriminant of scalar and tensor 2 new physics operators. The change in ⟨fL(q )⟩, induced by scalar and tensor operators, is about three times larger than the expected uncertainty in the upcoming Belle measurement.
Experimental Collaboration
Primary author: Prof. UMASANKAR, Sankagiri (Indian Institute of Technology Bombay) Co-authors: Prof. ALOK, Ashuotsh Kumar (Indian Institute of Technology Jodhpur); Dr KUMAR, Dinesh (University of Rajasthan, Jaipur); Mr KUMBHAKAR, Suman (Indian Institute of Technology Bombay)
Presenter: Prof. UMASANKAR, Sankagiri (Indian Institute of Technology Bombay) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 403 EPS-HEP 2017 / Report of Contributions The LZ Dark Matter experiment
Contribution ID: 517 Type: Parallel Talk
The LZ Dark Matter experiment Thursday, 6 July 2017 10:30 (15 minutes)
The LUX-Zeplin (LZ) experiment is the most advanced next-generation direct detection experi- ment under construction to search for dark matter in the Universe. It contains a dual-phase liquid xenon time projection chamber with a total active mass of 7 tons. LZ is implementing various low background techniques to significantly reduce radioactive background and reach an unprece- dented level of sensitivity to spin-independent WIMPs. For a WIMP mass of 40 GeV, a sensitivity of 2.3 × 10-48 cm2 is expected in 1,000 days of operation. LZ will be located at the Sanford Under- ground Research Facility (SURF) in South Dakota, at the same location as the recently completed LUX experiment. In this presentation, an overview of the experimental techniques and science reach will be presented.
Experimental Collaboration LZ Collaboration
Primary author: Prof. LORENZON, Wolfgang (University of Michigan) Presenter: Prof. LORENZON, Wolfgang (University of Michigan) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 404 EPS-HEP 2017 / Report of Contributions Astroparticle Physics in Hyper- …
Contribution ID: 518 Type: Parallel Talk
Astroparticle Physics in Hyper-Kamiokande Saturday, 8 July 2017 10:45 (15 minutes)
The Hyper-Kamiokande (Hyper-K) experiment centres around two proposed next-generation un- derground water Cherenkov detectors that will be nearly 20 times larger than the highly successful Super-Kamiokande and use significantly improved photodetectors with the same 40 % photocov- erage. The resulting sensitivity improvements will particularly benefit astroparticle physics atlow energies. This talk will give an overview over Hyper-K and present its projected physics reach in theareas of supernova neutrinos, solar neutrinos and indirect dark matter searches, based on the current design report. It will also discuss additional sensitivity improvements if the second detector is built in Korea in a location with a higher overburden.
Experimental Collaboration Hyper-Kamiokande Proto-Collaboration
Primary author: MIGENDA, Jost (University of Sheffield) Presenter: MIGENDA, Jost (University of Sheffield) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 405 EPS-HEP 2017 / Report of Contributions Charge correlations using balance …
Contribution ID: 519 Type: Parallel Talk
Charge correlations using balance functions of identified particles in Pb-Pb collisions at sqrt(sNN) = 2.76 TeV with ALICE Friday, 7 July 2017 10:00 (15 minutes)
The two-wave quark production scenario can be investigated experimentally by measurements of balance functions of identified particle pairs 1. By studying the balance functions of several hadronic species, one can gain insight into the chemical evolution of the QGP and radial flow. In a picture of early hadronization, pairs of particles and anti-particles (created at the same spacetime point) can separate further in rapidity due to the higher initial temperature and diffusive inter- actions with other particles. Therefore delayed hadronization will lead to strong correlations in rapidity in the final state. We present measurements of such balance functions based on ananaly- sis of data acquired at the Large Hadron Collider (LHC) by the ALICE detector.√ Balance functions have been measured for identified charged-pion pairs in Pb-Pb collisions at sNN = 2.76 TeV. These balance functions are presented in relative rapidity ∆y, relative pseudorapidity ∆η, and rel- ative azimuthal angle ∆φ. We observe that the charged-pion balance function widths in ∆η, ∆y and ∆φ are narrower in central Pb-Pb collisions compared to peripheral collisions. In addition, a comparison between the balance functions of charged pions and unidentified charged particles will be shown. The findings in this analysis are consistent with the effects of delayed hadronization and radial flow, as well as the two-wave scenario.
1 Pratt, Phys. Rev. C 85 (2012) 014904
Experimental Collaboration ALICE
Primary author: COLLABORATION, ALICE (CERN) Presenter: ALAM, Sk Noor (Department of Atomic Energy (IN)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 406 EPS-HEP 2017 / Report of Contributions Probing light-quarks Yukawa coup …
Contribution ID: 520 Type: Parallel Talk
Probing light-quarks Yukawa couplings & new physics in Higgs + jet(b-jet) studies Thursday, 6 July 2017 10:15 (15 minutes)
We suggest that the exclusive Higgs + light (or b) jet production at the LHC, pp → h + j(jb), is a rather sensitive probe of the light-quarks Yukawa couplings and of new physics (NP) in the Higgs-gluon hgg and quark-gluon qqg interactions. We study the Higgs pT distribution in pp → h + j(jb), employing non-differential observables to probe the different types of NP relevant for this process, which we parameterize either as scaled SM couplings (the kappa-framework) and/or through new higher dimensional effective operators (the SMEFT framework). We find that the exclusive h + j(jb) production at the 13 TeV LHC is sensitive to various NP scenarios, with typical scales ranging from a few to O(10) TeV, depending on the flavor, chirality and Lorentz structure of the underlying physics.
Experimental Collaboration
Primary authors: Dr BAR-SHALOM, Shaouly (Technion, Israel); Dr SONI, AMARJIT (BNL); Prof. EILAM, Gad (Technion-Israel Institute of Technology); Mr COHEN, Jonathan (Technion, Israel) Presenter: Dr BAR-SHALOM, Shaouly (Technion, Israel) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 407 EPS-HEP 2017 / Report of Contributions On the coherent inelastic binary a …
Contribution ID: 522 Type: Poster Presentation
On the coherent inelastic binary and multiparticle processes in ultrarelativistic hadron-nucleus, photon-nucleus and nucleus-nucleus collisions
The coherent inelastic processes of the type a → b, which may take place in the interaction of hadrons and γ quanta with nuclei at very high energies (the nucleus remains the same), are the- oretically investigated. For taking into account the influence of matter inside the nucleus, the optical model based on the concept of refraction index is applied. Analytical formulas for the effective cross section σcoh(a → b) are obtained, taking into account that at ultrarelativistic energies the main contribution into σcoh is provided by very small transferred momenta in the vicinity of the minimum longitudinal momen- tum transferred to the nucleus. It is shown that the cross section σcoh may be expressed through the “forward” amplitudes of inelastic scattering fa+N→b+N (0) and elastic scattering fa+N→a+N (0), fb+N→b+N (0) on a separate nucleon, and it depends on the ratios La/R,Lb/R, where La and Lb are the respective mean free paths in the nucleus matter for the particles a, b and R is the nuclear radius.
In doing so, several characteristic cases are considered in detail. In particular, when La/R ≫ 1, but Lb/R ≪ 1 (or La/R ≪ 1, but Lb/R ≫ 1), then σcoh is equal to the ratio of the “forward” cross sections of inelastic scattering a + N → b + N and elastic scattering of the particle b (or a) on a nucleon, multiplied by the cross section of scattering on the “black” nucleus πR2. If La/R ≫ 1 and Lb/R ≫ 1, 4 2 then σcoh ∼ R /k , where k is the initial energy of the particle a in the laboratory frame.
The above formalism is generalized also for coherent inelastic multiparticle processes onanucleus of the type a → { b1, b2, b3...bi } and for the case of coherent processes in collisions of two ultrarelativistic nuclei.
Experimental Collaboration
Primary authors: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ); Dr LYUBOSHITZ, Vladimir (Joint Institute for Nuclear Research, Dubna)
Presenter: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ) Session Classification: Poster session
Track Classification: Heavy Ion Physics
October 6, 2021 Page 408 EPS-HEP 2017 / Report of Contributions Time dependence of the helium flu …
Contribution ID: 523 Type: Parallel Talk
Time dependence of the helium flux measured by PAMELA Thursday, 6 July 2017 11:30 (18 minutes)
The last solar cycle has presented a peculiarly long quiet phase with consequent minimummodu- lation conditions for cosmic rays. The proton and electron spectra were measured from July 2006 to December 2009 by PAMELA experiment, providing fundamental information about the trans- port and modulation of cosmic rays inside the heliosphere. These studies allow to obtain amore complete description of the cosmic radiation. In this picture the time dependence of the helium spectrum become very important to constrain parameters of the actual solar modulation model. In this talk the helium spectrum measured from July 2006 to June 2014 by PAMELA experiment over six-month time intervals is presented.
Experimental Collaboration PAMELA collaboration
Primary author: PANICO, Beatrice (INFN - National Institute for Nuclear Physics) Presenter: PANICO, Beatrice (INFN - National Institute for Nuclear Physics) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 409 EPS-HEP 2017 / Report of Contributions The HEPD apparatus for the CSES …
Contribution ID: 524 Type: Parallel Talk
The HEPD apparatus for the CSES mission Saturday, 8 July 2017 10:45 (15 minutes)
The CSES (China Seismo-Electromagnetic Satellite) mission will investigate the structure andthe dynamic of the topside ionosphere, will monitor electric and magnetic field and high energy par- ticle fluctuations, searching for their correlations with the geophysical activity, in order tocon- tribute to the monitoring of earthquakes from space. The High-Energy Particle Detector (HEPD) is one of the payloads of the CSES space mission, built by the Italian “Limadou” collaboration. Results of the test beams held at the Beam Test Facility of the INFN National Laboratory of Frascati, for electrons, and at the Proton Cyclotron of Trento, for protons, will be presented. The perfor- mance of the apparatus both on the energy reconstruction and in the lepton/hadron separation will be shown.
Experimental Collaboration CSES-Limadou collaboration
Primary author: PANICO, Beatrice (INFN - National Institute for Nuclear Physics) Presenter: PANICO, Beatrice (INFN - National Institute for Nuclear Physics) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 410 EPS-HEP 2017 / Report of Contributions Effects of RGE on fermion observa …
Contribution ID: 525 Type: Parallel Talk
Effects of RGE on fermion observables in SO10 models Saturday, 8 July 2017 12:30 (15 minutes)
In the context of non-supersymmetric SO(10) models, we analyze the renormalization group equa- tions for the fermions observables (including neutrinos) from the GUT energy scale down to the electroweak energy scale, explicitly taking into account the effects of an intermediate energy scale induced by a Pati–Salam gauge group. We show that the evolved fermion masses and mixing present sizable deviations from the values obtained without including the effects of the intermedi- ate scale.
Experimental Collaboration
Primary author: MELONI, Davide (University of Roma Tre) Presenters: MELONI, Davide (University of Roma Tre); MELONI, Davide (Universita’ di Roma 3) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 411 EPS-HEP 2017 / Report of Contributions Possible resonance effect of dark m…
Contribution ID: 526 Type: Parallel Talk
Possible resonance effect of dark matter axions in SNS Josephson junctions Friday, 7 July 2017 12:45 (15 minutes)
Dark matter axions can generate peculiar effects in special types of Josephson junctions, so-called SNS junctions 1. One can show that the axion field equations in a Josephson environment allow for very small oscillating supercurrents, which manifest themselves as a tiny wiggle in the I-V curve, a so-called Shapiro step, which occurs at a frequency given by the axion mass. The effect is very small but perfectly measurable in modern nanotechnological devices. In this talk I will summarize the theory and then present evidence that candidate Shapiro steps of this type have indeed been seen in several independent experiments [2]. Assuming the observed tiny Shapiro steps are due to axion flow then these data consistently point to an axion mass of about110 µeV, consistent with what is expected for the QCD axion. In addition to the above small Shapiro resonance effects at frequencies in the GHz region one also expects to see broad-band noise effects at much lower frequencies [3]. Overall this approach provides a novel pathway for the future design of new types of axionic dark matter detectors. 1 C. Beck, Possible resonance effect of axionic dark matter in Josephson junctions, Phys. Rev.Lett. 111, 231801 (2013) [2] C. Beck, Axion mass estimates from resonant Josephson junctions, Phys. Dark Univ. 7-8, 6-11 (2015)
[3] C. Beck, Cosmological flux noise and measured noise power spectra in SQUIDs, Scient. Rep. 6, 28275 (2016)
Experimental Collaboration
Primary author: Prof. BECK, Christian (Queen Mary, University of London) Presenter: Prof. BECK, Christian (Queen Mary, University of London) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 412 EPS-HEP 2017 / Report of Contributions Cosmology with the Baryon Oscill …
Contribution ID: 527 Type: Parallel Talk
Cosmology with the Baryon Oscillation Spectroscopic Survey (BOSS) Friday, 7 July 2017 12:15 (15 minutes)
I will present an overview of the final results from the SDSS-III BOSS analysis (DR12). Using the galaxy power spectrum and correlation function, BOSS was able to measure the Baryon Acoustic Oscillations scale in two independent redshift bins to 1% precision. Such constraints allow to map out the expansion history of the Universe and represent one of the most important cosmological tools at low redshift. I will also present the latest constraints on the growth of structure, which allow tests of modified gravity theories and help to constrain the sum of the neutrino masses.
Experimental Collaboration BOSS
Primary author: BEUTLER, Florian (University of Portsmouth) Presenter: BEUTLER, Florian (University of Portsmouth) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 413 EPS-HEP 2017 / Report of Contributions Studies of the diffractive photopro …
Contribution ID: 528 Type: Parallel Talk
Studies of the diffractive photoproduction of isolated photons at HERA Thursday, 6 July 2017 10:15 (15 minutes)
The photoproduction of isolated photons has been measured using diffractive events recorded by the ZEUS detector at HERA. Cross sections are evaluated in the photon transverse-energy and γ pseudorapidity ranges 5 < ET < 15 GeV and −0.7 < ηγ < 0.9, inclusively and also with a jet with transverse-energy and pseudorapidity in the jet jet ranges 4 < ET < 35 GeV and −1.5 < η < 1.8, using a total integrated electron-proton luminosity of 456 pb−1. A number of kinematic variables were studied and compared to predictions from the Rapgap Monte Carlo model. An excess of data is observed above the Rapgap predictions for meas meas zpom > 0.9 where zpom is the fraction of the longitudinal momentum of the colourless “Pomeron” exchange that is transferred to the photon-jet final state, giving evidence for direct-Pomeron in- teractions.
Experimental Collaboration ZEUS
Presenter: LEVY, Aharon (Tel Aviv University (IL)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 414 EPS-HEP 2017 / Report of Contributions Combined QCD and electroweak a …
Contribution ID: 529 Type: Parallel Talk
Combined QCD and electroweak analysis of HERA data Thursday, 6 July 2017 12:30 (15 minutes)
A simultaneous fit of parton distribution functions (PDFs) and electroweak parameters to HERA data on deep inelastic scattering is presented. The input data are the neutral current and charged current inclusive cross sections which were previously used in the QCD analysis leading to the HERAPDF2.0 PDFs. In addition, the polarisation of the electron beam was taken into account for the ZEUS data recorded between 2004 and 2007. Results on the vector and axial-vector couplings of the Z boson to u- and d-type quarks, on the value of the electroweak mixing angle and the mass of the W boson are presented. The values obtained for the electroweak parameters are in agreement with Standard Model predictions. The resulting sets of PDFs, ZEUS-EW, are in agreement with HERAPDF2.0 and give a good description of ZEUS data with polarisation taken into account.
Experimental Collaboration ZEUS
Primary author: GWENLAN, Claire (University of Oxford (GB)) Presenter: GWENLAN, Claire (University of Oxford (GB)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 415 EPS-HEP 2017 / Report of Contributions Studies of HERA deep inelastic sca …
Contribution ID: 530 Type: Parallel Talk
Studies of HERA deep inelastic scattering data at low Q^2 and low x_Bj Friday, 7 July 2017 17:30 (15 minutes)
A phenomenological study of the final combined HERA data on inclusive deep inelastic scattering (DIS) has been performed. The data are presented and investigated for a kinematic range extend- ing from values of the four-momentum transfer, Q2, above 104 GeV2 down to the lowest values 2 2 observable at HERA of Q = 0.045 GeV and Bjorken x, xBj = 6 x 10−7. The data are well described by fits based on perturbative quantum chromodynamics (QCD) using collinear factorisation and evolution of the parton densities encompassed in the DGLAP formalism from the highest Q2 down to Q2 of a few GeV2. The standard DGLAP evolution was augmented by including an additional higher-twist term in the description of the longitudinal structure function, FL. This additional HT 2 term, FLAL /Q , improves the description of the reduced cross sections significantly. The re- sulting predictions for FL suggest that further corrections are required for Q^2 less than about 2 GeV^2. The Regge formalism can describe the data upto Q2 ~ 0.65 GeV2. The complete data set can be described by a new fit using the ALLM parameterisation. The region between the Regge and the perturbative QCD regimes is of particular interest.
Covers 2 papers: I. Abt et al., Phys. Rev. D 94 (2016) 034032, arXiv:1604.02299 I. Abt et al., arXiv:170403187
Experimental Collaboration
Primary authors: WING, Matthew (University of London (GB)); ABT, Iris (Werner-Heisenberg-In- stitut); SARKAR, amanda; FOSTER, Brian (University of Oxford (GB)); MYRONENKO, Volodymyr (Deutsches Elektronen-Synchrotron); MYRONENKO, Volodymyr (DESY); WICHMANN, Katarzyna (Deutsches Elektronen-Synchrotron (DE))
Presenter: WICHMANN, Katarzyna (Deutsches Elektronen-Synchrotron (DE)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 416 EPS-HEP 2017 / Report of Contributions Investigation of high-mass hadron …
Contribution ID: 531 Type: Parallel Talk
Investigation of high-mass hadrons at HERA Saturday, 8 July 2017 11:45 (15 minutes)
0 0 A search for a narrow baryonic state in the pKS and pK¯ S system has been performed in ep colli- sions at HERA with the ZEUS detector using an integrated luminosity of 358 pb−1 taken in 2003- 2007. The search was performed with deep inelastic scattering (DIS) events atan ep centre-of-mass energy of 318 GeV for exchanged photon virtuality, Q2, between 20 and 100 GeV2. Contrary to evidence presented for such a state around 1.52 GeV in a previous ZEUS analysis using a sample −1 0 of 121 pb , taken in 1995–2000, no resonance peak is found in the p(¯p)KS invariant-mass distri- bution in the range 1.45–1.7 GeV. Upper limits on the production cross section are set for different assumptions on the width of the resonance. The exclusive deep inelastic electroproduction of ψ(2S) and J/ψ(1S) at an ep centre-of-mass energy of 317 GeV has been studied with the ZEUS detector at HERA in the kinematic range 2 < Q2 < 80 GeV2, 30 < W < 210 GeV and |t| < 1 GeV2, where Q2 is the photon virtuality, W is the photon– proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The data for 2 < Q2 < 5 GeV2 were taken in the HERA I running period andcorre- spond to an integrated luminosity of 114 pb−1. The data for 5 < Q2 < 80 GeV2 are from bothHERA I and HERA II periods and correspond to an integrated luminosity of 468 pb−1. The decay modes analysed were μ+μ− and J/ψ(1S)π+π− for the ψ(2S) and μ+μ− for the J/ψ(1S). The cross-section ratio σ(ψ(2S))/σ(J/ψ(1S)) has been measured as a function of Q2, W, and t. The results are compared to predictions of QCD-inspired models of exclusive vector-meson production.
Experimental Collaboration ZEUS
Presenter: STANCO, Luca (Universita e INFN, Padova (IT)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 417 EPS-HEP 2017 / Report of Contributions Extended studies of isolated photo …
Contribution ID: 532 Type: Parallel Talk
Extended studies of isolated photon production in deep inelastic scattering at HERA Thursday, 6 July 2017 17:15 (15 minutes)
Isolated photons with high transverse energy components have been studied in ep scattering with the ZEUS detector at HERA, using 326pb−1 integrated luminosity. The kinematic 2 2 γ region includes photon virtualities 10 < Q < 350 GeV . Photons with transverse energy 4 < ET < 15 GeV and pseudorapidity −0.7 < ηγ < 0.9 were measured with accompanying jets having trans- jet jet verse energy and pseudo rapidity 2.5 < ET < 35 GeV and −1.5 < η < 1.8. Differential cross sections are presented for the following variables: the fraction of the incoming photon energy and momentum that is transferred to the photon and the jet, the fraction of proton energy taken by the parton that interacts with the photon, and the azimuthal angle and the pseudorapidity difference between the prompt photon and the jet and between the prompt photon and the scattered elec- tron. Comparisons are made with several different theoretical calculations: a leading-logarithm Monte Carlo simulation, a next-to-leading-order QCD calculation and a calculation using the kT factorisation approach.
Experimental Collaboration ZEUS
Presenter: BROCK, Ian (University of Bonn (DE)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 418 EPS-HEP 2017 / Report of Contributions Theoretical prediction of Λ, Σ, Ξ h …
Contribution ID: 534 Type: Poster Presentation
Theoretical prediction of Λ, Σ, Ξ hyperon magnetic | H | form factors GM (t) behaviours and also ratio | H | | H | GE (t) / GM (t) in time-like region.
The advanced Λ, Σ, Ξ hyperon Unitary and Analytic electromagnetic structure models are con- | H | | H | | H | structed explicitly and behaviours of GM (t) and ratios GE (t) / GM (t) are predicted in time- like region as functions of the total energy squared t = W 2 in the c.m. system of HH¯ , which will be found out in intended + − measurements of the Λ, Σ, Ξ hyperon polar angle ΘH distributions F (cos ΘH ) in e e → HH¯ processes.
Experimental Collaboration
Primary author: Prof. DUBNICKA, Stanislav (Inst. of physics SAS) Co-authors: Prof. DUBNICKOVA, Anna Zuzana (Dept.of Theor.Physics, Comenius University); Dr ADAMUSCIN, Cyril (Slovak Academy of Sciences (SK)); Dr BARTO\V S, Erik (Inst.of Physics SAS)
Presenter: Prof. DUBNICKA, Stanislav (Inst. of physics SAS) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 419 EPS-HEP 2017 / Report of Contributions Study of neutron-induced backgro …
Contribution ID: 535 Type: Poster Presentation
Study of neutron-induced background hits in the CMS endcap muon system, and implications for the HL-LHC
Among the many challenges to be brought by the high luminosities of the HL-LHC is the impact of increased hit rates in the cathode strip chambers of the CMS endcap muon system. These chambers are used for all levels of trigger as well as offline reconstruction. Neutrons (both fast and thermal) induce background hits via nuclear interactions and capture, followed by gamma emission and (mainly) Compton scatter off electrons that subsequently ionize the chamber gas. This poster will describe recent efforts to improve the understanding of such neutron-induced background through detailed comparison of CMS pp collision data, GEANT4 simulation, and the response of CMS detectors placed in the CERN high-intensity gamma irradiation facility, GIF++. Projections for the effect of such neutron-induced background hits on trigger and reconstruction attheHL- LHC will be described.
Experimental Collaboration CMS
Primary author: DASGUPTA, Abhigyan (University of California Los Angeles (US)) Presenter: DASGUPTA, Abhigyan (University of California Los Angeles (US)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 420 EPS-HEP 2017 / Report of Contributions Study of the CMS RPC detector pe …
Contribution ID: 536 Type: Poster Presentation
Study of the CMS RPC detector performance in high radiation background conditions
The RPC system at the CMS Detector is operating successfully from beginning of the datataking. The high instantaneous luminosity causes an extremely high flux of ionizing particles. Thelong period of operation (Run1 and Run2) in a huge radiation background conditions, gives the oppor- tunity to study the operation capability of the RPCs and also to predict a data-driven extrapolation about the expecting particle rates at HL LHC (High Luminosity) scenario. The obtained results in terms of measured rate, currents and integrated charged will be presented in the poster. When it is possible they will be compared to the relevant results obtained from the dedicated study where a set of test chambers have been irradiated at GIF++ laboratory setup.
Experimental Collaboration CMS
Primary author: MIGUEL COLIN, Osvaldo (Universidad Iberoamericana (MX)) Presenter: MIGUEL COLIN, Osvaldo (Universidad Iberoamericana (MX)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 421 EPS-HEP 2017 / Report of Contributions The CMS RPC detector performan …
Contribution ID: 537 Type: Poster Presentation
The CMS RPC detector performance during Run-2 data taking
The CMS experiment, located at the CERN Large Hadron Collider, has a redundant muonsystem composed by three different detector technologies: Cathode Strip Chambers (in the forward re- gions), Drift Tubes (in the central region), and Resistive Plate Chambers (both in the centraland forward regions). The RPCs are designed mainly as a trigger detector but they contribute alsoto the muon reconstruction. Thus the monitoring and the analysis of the system performance are necessary and essential for the final data quality. The main detector characteristics and thehit efficiency and cluster size will be presented in the poster. The stability of the system inthecondi- tions of high instantaneous luminosity and high number of PU events will be presented in a view of history monitoring and stable trend.
Experimental Collaboration CMS
Primary author: SHAH, Mehar Ali (National Centre for Physics, Quaid-I-Azam Univ.) Presenter: SHAH, Mehar Ali (National Centre for Physics, Quaid-I-Azam Univ.) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 422 EPS-HEP 2017 / Report of Contributions Search for tZ′ associated producti …
Contribution ID: 538 Type: Poster Presentation
Search for tZ′ associated production induced by tcZ′ couplings at the LHC
′ The P5 and RK anomalies, recently observed by the LHCb collaboration in B → K(∗) transitions, may indicate the existence of a new Z′ boson, ′ which may arise from gauged Lµ − Lτ symmetry. Flavor-changing neutral current Z couplings, such as tcZ′, can be induced by the presence of extra vector-like quarks. In this paper we study the LHC signatures of the induced right-handed tcZ′ coupling that is inspired by, but not directly linked to, the B → K(∗) anomalies. The specific processes studied are cg → tZ′ and its conjugate process each followed by Z′ → µ+µ−. By constructing an effective theory for the tcZ′ coupling, we first explore model-independently the discovery potential of sucha Z′ at the 14 TeV LHC with 300 and 3000 fb−1 integrated luminosities. We then reinterpret the model- ′ independent results within the gauged Lµ − Lτ model. In connection with tcZ , the model also implies the existence of a flavor-conserving ccZ′ coupling, which can drive the cc¯ → Z′ → µ+µ− process. Our study shows that existing LHC results for dimuon resonance searches already con- strain the ccZ′ coupling, and that the Z′ can be discovered in either or both of the cg → tZ′ and cc¯ → Z′ processes. We further discuss the sensitivity to the left-handed tcZ′ coupling and find that the coupling values favored by the B → K(∗) anomalies lie slightly below the LHC discovery reach even with 3000 fb−1.
Experimental Collaboration
Primary author: MODAK, Tanmoy (National Taiwan University) Presenter: MODAK, Tanmoy (National Taiwan University) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 423 EPS-HEP 2017 / Report of Contributions Multi-Gigabit Wireless Data Trans …
Contribution ID: 539 Type: Parallel Talk
Multi-Gigabit Wireless Data Transfer for High Energy Physics Applications Thursday, 6 July 2017 15:30 (15 minutes)
The future of connectivity is wireless, and the HEP community is not an exception. Thedemand for high capacity data transfer continues to increase year over year at a significant rate. This isan on-going race where technology and applications developers push into higher and higher band- widths. For example the tracking detectors require readout systems with several thousand links that has to handle a data transfer of multiple-gigabit/s each. Also, due to the high granularity of these detectors, stringent requirements are also specified on the space, material and power con- sumption. Wireless techniques have also developed extremely fast the last decade and are now mature for being considered as a promising alternative to cables and optical links that would rev- olutionize the detector design. In this context has the WADAPT (Wireless Allowing Data and Power Transmission) consortium been formed to identify the specific needs of different projects that might benefit from wireless readout techniques. The millimeter-wave band (mmw) isdefined where the wavelength varies from ten millimeters (30 GHz) down to 1 millimeter (300 GHz). In this consortium we will concentrate on data transfer communication in the 60 GHz band (57 GHz - 66 GHz). This license free 9 GHz band is very attractive in order to achieve a high data ratetrans- fer. In addition it provides a small form factor, material reduction, high material penetration loss, narrow beam width and high path loss. These features, and due to the operation in a very well controlled environment with line-of-sight operation, makes the 60 GHz band optimal for short range operation as in a detector environment. This talk present current developments of the 60 GHz transceiver chip for HEP applications. Stud- ies of antenna and data transmission will also be shown. An International collaboration for an R&D on wireless readout is now sent to CERN, and is now under evaluation.
Experimental Collaboration
Primary authors: Mr SOLTVEIT, Hans Kristian (University of Heidelberg); Prof. BRENNER, R. (Up- psala University, Sweden); Mr DANCILA, D. (Uppsala University, Sweden); Dr DEHOS, D. (CEA/LETI, Grenoble, France); Dr DE LURGIO, P. (Argonne National Laboratory, Argonne, USA); Dr DJURCIC, Z. (Argonne National Laboratory, Argonne, USA); Dr DRAKE, G. (Argonne National Laboratory, Argonne, USA); Dr JIMENEZ, J.L.G. (CEA/LETI, Grenoble, France); Dr GUSTAFSSON, L. (Uppsala University, Sweden); Prof. KIM, D.W. (Gangneung National University, Korea); Dr LOCCI, E. (CEA/DRF/IRFU, Gif-sur-Yvette, France); Prof. PFEIFFER, U. (University of Wuppertal, Germany); Prof. ROEHRICH, D. (University of Bergen); Dr RYDBERG, D. (Uppsala University, Sweden); Prof. SCHOENING, A. (Uni- versity of Heidelberg, Germany); Dr SILIGARIS, A. (CEA/ LETI, Grenoble, France); Prof. ULLALAND, K. (University of Bergen, Norway); Dr VINCENT, P. (CEA/LETI, Grenoble, France); Dr VASQUEZ, P.R. (University of Wuppertal, Germany); Dr WIEDNER, D. (University of Heidelberg, Germany); Dr YANG, S. (University of Bergen, Norway)
October 6, 2021 Page 424 EPS-HEP 2017 / Report of Contributions Multi-Gigabit Wireless Data Trans …
Presenter: Mr SOLTVEIT, Hans Kristian (University of Heidelberg) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 425 EPS-HEP 2017 / Report of Contributions Limits on the effective quark radiu …
Contribution ID: 540 Type: Parallel Talk
Limits on the effective quark radius from inclusive ep scattering at HERA Friday, 7 July 2017 12:30 (15 minutes)
The high precision HERA combined measurement of inclusive deep inelastic cross sections inneu- tral and charged current ep scattering, corresponding to a luminosity of about 1fb−1, permits searches for new contributions to electron-quark scattering beyond the Standard Model up to TeV scales. A new approach to beyond the Standard Model analysis of the inclusive ep data is presented; simulataneous fits of parton distribution functions and contributions of “new physics” processes were performed. Results are presented considering a finite radius of quarks within the quark form- factor model. The resulting 95% C.L. upper limit on the effective quark radius is0.43x10−16 cm.
Experimental Collaboration ZEUS
Presenters: TURKOT, Oleksii (DESY); TURKOT, Oleksii (Deutsches Elektronen-Synchrotron (DE))
Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 426 EPS-HEP 2017 / Report of Contributions Search for contact interactions in i …
Contribution ID: 541 Type: Parallel Talk
Search for contact interactions in inclusive ep scattering at HERA Friday, 7 July 2017 09:45 (15 minutes)
The high-precision HERA data are used to search for Beyond the Standard Model contributions to electron-quark scattering in the framework of eeqq contact interactions (CI). Combined measure- ments of the inclusive deep inelastic cross sections in neutral and charged current ep scattering are considered, corresponding to a luminosity of around 1 fb−1. The analysis of the inclusive ep data is based on the simultaneous fits of parton distribution functions together with contributions of CI couplings to ep scattering. Results are presented for different CI scenarios and the resulting 95% CL limits on the CI mass scales extend up to the 10 TeV scale.
Experimental Collaboration ZEUS
Primary author: WING, Matthew (University of London (GB)) Presenter: WICHMANN, Katarzyna (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 427 EPS-HEP 2017 / Report of Contributions Direct measurement of the top qu …
Contribution ID: 542 Type: Parallel Talk
Direct measurement of the top quark mass in pp¯ collisions at D0 Friday, 7 July 2017 15:00 (15 minutes)
We report the most recent measurements of the mass of the the top quark, performed by the D0 experiment at the Fermilab Tevatron collider using the full Run II (2001–2011) data set correspond- ing to an integrated luminosity of 9.7 fb−1. This includes measurements in the dilepton channels using the matrix element and neutrino weighting approaches, as well as measurements in the lep- ton+jets channel using the matrix element method. We also discuss the final D0 combination and the preliminary D0+CDF combination of the top quark mass using Run I (1992–1996) and Run II measurements.
Experimental Collaboration D0
Primary author: BRANDT, Oleg (Ruprecht-Karls-Universitaet Heidelberg (DE)) Presenter: BRANDT, Oleg (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 428 EPS-HEP 2017 / Report of Contributions Measurement of the pole mass of …
Contribution ID: 543 Type: Parallel Talk
Measurement of the pole mass of the top quark using pp¯ → tt¯production cross sections at D0 Friday, 7 July 2017 15:45 (15 minutes)
We present an alternative approach to the direct measurements of the top quark mass using D0 data. We discuss extractions of the pole mass of the top quark based on measurements of the inclusive and unfolded differential pp¯ → tt¯production cross section as a function of pT (t) and tt¯ mass.. We use the full Run II data set of pp¯collisions collected by the D0 experiment, corresponding to an integrated luminosity of 9.7 fb−1.
Experimental Collaboration D0
Primary author: DELIOT, Frederic (CEA/IRFU,Centre d’etude de Saclay Gif-sur-Yvette (FR)) Presenter: DELIOT, Frederic (CEA/IRFU,Centre d’etude de Saclay Gif-sur-Yvette (FR)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 429 EPS-HEP 2017 / Report of Contributions Forward-backward asymmetry in …
Contribution ID: 544 Type: Parallel Talk
Forward-backward asymmetry in pp¯ → tt¯events at the Tevatron Friday, 7 July 2017 17:45 (15 minutes)
We discuss the complete overview of the forward-backward asymmetry measurements in the an- gular distributions of pp¯ → tt¯ events at the Tevatron collider. These measurements use the full Run II data set in lepton plus jets and dilepton channels, recorded in the D0 and CDF detectors, corresponding to an integrated luminosity of ≈ 2 × 10 fb−1 . The combinations of inclusive and differential asymmetries are presented and compared with the NNLO QCD predictions.
Experimental Collaboration D0 and CDF
Primary author: PALENCIA CORTEZON, Jose Enrique (Universidad de Oviedo (ES)) Presenters: PALENCIA CORTEZON, Jose Enrique (Universidad de Oviedo (ES)); COLLABORA- TION, D0 (Fermilab); COLLABORATION, CDF (Fermilab) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 430 EPS-HEP 2017 / Report of Contributions Measurements of the effective wea …
Contribution ID: 545 Type: Parallel Talk
Measurements of the effective weak mixing angle in dimuon events at D0 Thursday, 6 July 2017 10:00 (15 minutes)
We present the measurements of forward-backward charge asymmetry A√FB in pp¯ → Z/γ∗ → µ+µ− events using 9.7 fb−1 of pp¯ data collected at s = 1.96 TeV by the D0 detector at the Fermilab Tevatron collider. AFB is measured as a function of the invariant 2 lep mass of the dimuon system to extract the effective weak mixing angle sin θeff . In the context of 2 − 2 2 the standard model, using the on-shell renormalization scheme where sin θW = 1 MW /MZ , 2 lep measurements of sin θeff yield indirect extractions of the W mass.
Experimental Collaboration D0
Primary author: YANG, Siqi (The University of Iowa (US)) Presenter: YANG, Siqi (The University of Iowa (US)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 431 EPS-HEP 2017 / Report of Contributions Measurements and combination of …
Contribution ID: 546 Type: Parallel Talk
Measurements and combination of the weak mixing angle at Tevatron and extraction of the W mass Thursday, 6 July 2017 10:15 (15 minutes)
We present four measurements of forward-backward charge asymmetry AFB in √ pp¯ → Z/γ∗ → e+e−/µ+µ− + X events using ∼ 10 fb−1 of pp¯ data collected at s = 1.96 TeV by the D0 and CDF detectors at the Fermilab Tevatron collider. AFB is measured as a function of 2 lep the invariant mass of the dilepton system to extract the effective weak mixing angle sin θeff . We discuss the combination of these measurements and present the indirect extraction of the W mass in the context of the standard model.
Experimental Collaboration D0 and CDF
Primary authors: QUINN, Breese (University of Mississippi); QUINN, Breese (University of Mis- sissippi); QUINN, Breese (University of Mississippi) Presenters: QUINN, Breese (University of Mississippi); QUINN, Breese (University of Mississippi); QUINN, Breese (University of Mississippi) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 432 EPS-HEP 2017 / Report of Contributions Measurement of charge asymmetr …
Contribution ID: 547 Type: Poster Presentation
Measurement of charge asymmetry in B → µD0X decays at D0
We present the first measurement of the direct CP-violating charge asymmetry in B± mesons de- caying to µ±D0X where the D0 decays to K+π−, using 10.4 fb−1 of proton-antiproton collisions collected by the D0 detector during Run II at the Fermilab Tevatron Collider.
Experimental Collaboration D0
Primary authors: HIROSKY, Bob (University of Virginia (US)); TUCHMING, Boris (CEA Saclay); COL- LABORATION, D0 (Fermilab)
Presenter: COLLABORATION, D0 (Fermilab) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 433 EPS-HEP 2017 / Report of Contributions Exotic multi quark states and mea …
Contribution ID: 548 Type: Parallel Talk
Exotic multi quark states and measurement of the forward-backward asymmetry of baryon production in pp¯ collisions at D0 Saturday, 8 July 2017 12:00 (15 minutes)
−1 We use the full Run II dataset consisting√ of 10.4 fb of pp¯ collisions recorded by the D0 detector at the Fermilab Tevatron collider at s = 1.96 TeV to search for new exotic multiquark states. 0 0 → We report the evidence of a new state X(5568) decaying to Bs π seen in the Bs J/ψϕ decay 0 → ± ∓ channel and its independent confirmation in the semi-leptonic channel Bs µ Ds X. We also report on the search for other exotic states. We also study the forward-backward production asymmetries of baryons (Λ,Λb,Λc,Ξ,Ω) produced in proton antiproton collisions at s√=1.96 TeV recorded by the D0 detector at the Fermilab Tevatron collider. The forward-backward asymmetries are measured as a function of rapidity. Weconfirm that the production ratio of backward to forward events, measured by several experiments with various targets and a wide range of energies, is a universal function of “rapidity loss”, i.e., the rapidity difference between the beam proton and the baryon, when the baryon shares adiquark with the proton
Experimental Collaboration D0
Presenter: HOENEISEN, Bruce (Universidad San Francisco de Quito) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 434 EPS-HEP 2017 / Report of Contributions The Fermilab Muon g-2 straw trac …
Contribution ID: 550 Type: Parallel Talk
The Fermilab Muon g-2 straw tracking detectors and the muon EDM measurement. Saturday, 8 July 2017 10:15 (15 minutes)
The Fermilab Muon g-2 experiment will measure the anomalous magnetic moment of themuonto a precision of 140 parts per billion, which is a factor of four improvement over the previous E821 measurement at Brookhaven. The experiment will also extend the search for the muon’s electric dipole moment (EDM) by approximately two orders of magnitude with a sensitivity down to 10−21 e.cm. Both of these measurements are made by an analysis of the modulation of the decay rate of the higher-energy positrons from the (anti-)muon decays recorded by 24 calorimeters and 3 straw tracking detectors. The straw tracking detectors will be used to cross-calibrate the calorimeter, identify pileup and muons lost from the storage region, and to measure the beam-profile. A tracker measurement of the up-down modulation of positrons will be used in the EDM analysis.
In this talk, the mechanical design of the straw tracking detector will be described and the first data from the 2017 g-2 commissioning run presented. Each tracking detector module comprises 128 straws supported by two aluminium manifolds which contain the front-end readout and HV boards which are water cooled via a channel machined into the manifold. The straws are tensioned and crimped with bespoke tools. The manifold is housed in a vacuum chamber with an interconnecting flange which in turn is connected to the back-end readout electronics via an aluminium snout.The performance of the tracking detectors in beam-tests, simulation and the first data from the g-2 experiment will be described and the expected performance in the physics data-taking in 2018/19 will be presented, particularly in the context of the experiment’s sensitivity to a muon EDM.
Experimental Collaboration Muon g-2
Primary author: CHISLETT, Rebecca Presenter: CHISLETT, Rebecca Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 435 EPS-HEP 2017 / Report of Contributions Exclusion of multifold solutions of …
Contribution ID: 551 Type: Poster Presentation
Exclusion of multifold solutions of the CKM Unitarity Triangle by a time-dependent Dalitz plot analysis of B0 –> D(*) h0 with D –> Ks pi pi decays combining BaBar and Belle data
We present results of a new analysis campaign, which combines the final data samples collected by the B factory experiments BaBar and Belle in single physics analyses to achieve a unique sensitivity in time-dependent CP violation measurements. The data samples contain (471±3)×106 BB¯ pairs recorded by the BaBar detector and (772 ± 11) × 106 BB¯ pairs recorded by the Belle detector in e+e− collisions at the center-of-mass energies corresponding to the mass of the Υ (4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We present a measurement of sin(2β) and cos(2β) by a time-dependent Dalitz plot analysis of B0 → D(∗)h0 → 0 + − with D KSπ π decays. A first evidence for cos(2β) > 0, the exclusion of trigonometric multifold solutions of the Unitarity Triangle and an observation of CP violation are reported.
Experimental Collaboration BABAR and BELLE
Primary author: EIGEN, Gerald (University of Bergen (NO)) Presenter: EIGEN, Gerald (University of Bergen (NO)) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 436 EPS-HEP 2017 / Report of Contributions Status and discovery prospects for …
Contribution ID: 552 Type: Parallel Talk
Status and discovery prospects for light pseudoscalars in the NMSSM Friday, 7 July 2017 16:45 (15 minutes)
While most BSM searches at the LHC focus on heavy new states, the NMSSM contain the possibil- ity of new light states that have escaped detection due to their singlet nature.
Here we focus on light pseudoscalars, investigating the parameter space impact of recent LHC searches for such light states stemming from the decay of the 125 GeV Higgs boson. It is shown that, though direct searches can not yet compete with the requirement of the 125 GeV scalar having SM-like couplings, the searches are touching the allowed parameter space and should make a phenomenological impact in the near future.
Experimental Collaboration
Primary author: BOMARK, Nils-Erik Presenter: BOMARK, Nils-Erik Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 437 EPS-HEP 2017 / Report of Contributions Recent QCD results from the BaBa …
Contribution ID: 554 Type: Parallel Talk
Recent QCD results from the BaBar experiment Saturday, 8 July 2017 09:45 (15 minutes)
We report some of the most recent results in studying different aspects of QCD with about 500 fb−1 of data collected by the BaBar experiment at the e+e- B-factory PEP-II. In particular, we present Dalitz plot analyses of the hadronic three-body J/ψ decays to π+π−π0, + − 0 ± ∓ K K π , and KSK π using an isobar model and a Veneziano model. We then show the results of a search for the B-meson decay to four baryons B → ppp¯ p¯, which might help shedding some light on the mechanism of hadron fragmentation into baryons, and on the experimental difference between the inclusive branching fraction of B-meson decay to baryons and the sum of the exclusive baryonic B decays. We also present a high precision measurement of the mass difference between the D∗(2010)+ and D+ mesons using the decay chain D∗(2010)+ → D+π0, with D+ → K−π+π+ , which largely improve the knowledge of this parameter.
Experimental Collaboration BABAR
Presenters: ZANI, Laura; ZANI, Laura (INFN - National Institute for Nuclear Physics) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 438 EPS-HEP 2017 / Report of Contributions Measurement of e+e− to hadrons …
Contribution ID: 555 Type: Parallel Talk
Measurement of e+e− to hadrons cross sections with BABAR and implications for the muon g-2 Saturday, 8 July 2017 10:30 (15 minutes)
The BABAR Collaboration has an intensive program studying hadronic cross sections inlow- energy e+e− annihilations, which are accessible with data taken near the Υ(4S) via initial-state radiation. Our measurements allow significant improvements in the precision of the predicted value of the muon anomalous magnetic moment. These improvements are necessary for shedding light on the current ~3 sigma difference between the predicted and the experimental values. We have previously published results on a number of processes with two to six hadrons in the final state. Currently, the largest uncertainty on the calculation of the hadronic contribution in the energy region between 1 and 2 GeV stems from the e+e− → π+π−π0π0 cross section. A new precise measurement of this process is presented here, together with measurement of other low-multiplicity channels, such as e+e− → π+π−η.
+ − 0 0 0 We also present the first measurements of the e e → KSKLπ , KSKLη and KSKLπ π cross sections, and the study of their intermediate resonance structure, using 469/fb of data collected with the BaBar detector at SLAC. Initial-state radiation events are also used to study the processes + − + − 0 + − e e → KSK π π and KSK π η, and their intermediate states.
Experimental Collaboration BABAR
Primary author: SOLODOV, Evgeny (BudkerINP) Presenter: SOLODOV, Evgeny (BudkerINP) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 439 EPS-HEP 2017 / Report of Contributions Measurement of the hadronic cros …
Contribution ID: 556 Type: Poster Presentation
Measurement of the hadronic cross sections for e+e− to final states with neutral kaons with the BaBar detector
Measurements of low-energy e+e− hadronic cross sections are of fundamental importance be- cause of the approximately three sigma discrepancy between the current measured value of the muon anomalous magnetic moment (g-2) and the Standard Model prediction. By means of the initial-state-radiation technique, we present the first measurements of the e+e− → 0 0 0 KSKLπ , KSKLη and KSKLπ π cross sections, and the study of their intermediate resonance − structure, using 469 fb 1 of data collected with the BaBar detector at SLAC. Initial-state radia- + − + − 0 + − tion events are also used to study the processes e e → KSK π π and KSK π η, and their intermediate states.
Experimental Collaboration BABAR
Presenter: LUSIANI, Alberto (Scuola Normale Superiore and INFN Pisa) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 440 EPS-HEP 2017 / Report of Contributions Teaching particle physics to high s …
Contribution ID: 557 Type: Poster Presentation
Teaching particle physics to high school teachers
Particle physics is one of the most remarkable endeavours undertaken by mankind. However, the achievements are largely beyond reach for all but the particle physicists themselves. Popular science and high school text books being riddled with oversimplified and to some extent incorrect information, learning these topics becomes virtually impossible for anyone outside of the field. In this talk I will discuss how particle physics can be taught correctly to early bachelor students, of whom some are expected to become high school teachers. The key is to carefully introduce concepts like particles (care must be taken here since particles are very different from classical particles, a far too often ignored point), Feynman diagrams and virtual particles; explaining their meaning without introducing the complicated mathematics of quantum field theory. To further understand the construction of the standard model, one must introduce gauge theory and spontaneous symmetry breaking. It will be a mayor topic of this presentation to present a way of doing this in an intuitive and correct manner.
It is also demonstrated how the presence of infinities as well as renormalisation and RGE flow can be understood from a study of the electric field of an electron, requiring no more mathematics than an integral of Coulombs law.
Experimental Collaboration
Primary author: BOMARK, Nils-Erik Presenter: BOMARK, Nils-Erik Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 441 EPS-HEP 2017 / Report of Contributions Recent searches for beyond-SM eff …
Contribution ID: 558 Type: Parallel Talk
Recent searches for beyond-SM effects in B-meson decays at BaBar Thursday, 6 July 2017 12:15 (15 minutes)
In the recent past, several hints of inconsistencies between experimental results and theory pre- dictions in the framework of the Standard Model (SM) have been obtained from measurement of B-meson decays, though no beyond-SM (BSM) effects have been observed yet. We report here about a few recent searches for BSM effects in B-meson decays performed with the full BaBar data sample, collected at the energy of the Υ(4S) resonance, which corresponds to 471 million BB¯ pairs. Among these, measurements of semileptonic decays involving the tau lepton that evidenced a sig- nificant discrepancy with the SM predictions, and of the rare flavour changing neutral current processes B → K(∗)l+l− where l = e, µ, τ. The latter, highly suppressed in the SM, occurat lowest order via 1-loop diagrams, and contributions from virtual particles in the loop allow one to probe large mass scales at relatively low energies. In particular, the decays B → K∗e+e− and B → K∗µ+µ− (both charged and neutral modes) are studied using an angular analysis to extract the quantities AFB and FL, and the quantity P2, which is subject to smaller theoretical uncertainties and is more sensitive to non-SM contributions. We also present a search for the not yet observed B+ → K+τ +τ − decay.
Experimental Collaboration BABAR
Presenter: EIGEN, Gerald (University of Bergen (NO)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 442 EPS-HEP 2017 / Report of Contributions Measurement of CP violation in …
Contribution ID: 559 Type: Poster Presentation
Measurement of CP violation in D+ → π+π0 decays at BaBar
The status of CP violations in charm sector is still unsettled. According to SM, the predicted asymmetries are small, but often affected by large uncertainties due to long-distance effects. However, it is possible to build observables which SM predicts to be CP -conserving, so that any measured asymmetry is undoubtedly a sign of New Physics. We present the analysis of CP -asymmetries of singly Cabibbo-suppressed decays D+ → π+π0, using the final dataset collected by BaBar. We discuss the sensitivity to CP -violating phases, and the correspondent New Physics constraints.
Experimental Collaboration BABAR
Primary author: ANULLI, Fabio (Sapienza Universita e INFN, Roma I (IT)) Presenter: ANULLI, Fabio (Sapienza Universita e INFN, Roma I (IT)) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 443 EPS-HEP 2017 / Report of Contributions Searches for low-mass new- …
Contribution ID: 561 Type: Parallel Talk
Searches for low-mass new-physics states with the BaBar detector Friday, 7 July 2017 10:15 (15 minutes)
We report on the most recent searches for unknown low-mass states performed with the data col- lected by the BaBar detector at the PEP-II e+e- collider. The first search is based on a sample corresponding to 53 fb−1 of e+e− collision data collectedwith a special single-photon trigger. We look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle A′ through the process e+e−→γA′, A′→invisible. Such particles, referred to as “dark photons”, are motivated by theories applying a U(1) gauge symmetry to dark matter. We find no evidence for such processes and set 90\% confidence level upper limits on the coupling strength of A′→e+e− for adarkpho- ton with a mass lower than 8 GeV. In particular, our limits exclude the values of the A′ coupling suggested by the dark-photon interpretation of the muon (g-2) anomaly, as well as a broad range of parameters. Many models of New Physics postulate the existence of new gauge bosons mediating interactions between “dark sectors” and the Standard Model. We present a second search for a dark boson Z′ coupling only to the second and third generation of leptons in the reaction e+e−→μ+μ−Z′, Z′→μ+μ− with the full BaBar dataset. No significant signal is observed and limits improving upon bounds derived from neutrino experiments are set.
Experimental Collaboration BABAR
Primary author: ANULLI, Fabio (Sapienza Universita e INFN, Roma I (IT)) Presenter: ARNAUD, Nicolas (LAL (CNRS-IN2P3)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 444 EPS-HEP 2017 / Report of Contributions The CUORE and CUORE-0 experi …
Contribution ID: 563 Type: Parallel Talk
The CUORE and CUORE-0 experiments at LNGS Friday, 7 July 2017 15:45 (15 minutes)
The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experi- ment searching for neutrinoless double beta decay that has been able to reach the 1-ton scale. The detector consists of an array of 988 TeO2 crystals arranged in a cylindrical compact structure of 19 towers. The construction of the experiment and, in particular, the installation of all towers inthe cryostat was completed in August 2016 and commissioning started in fall 2016. The experiment has just completed the pre-operation phase and data taking is commencing. In this talk we will present the achievements of the CUORE construction phase and the performance of the detector during pre-operation. Physics results from CUORE-0, the first CUORE-style tower operated in 2013-2015, will also be updated.
Experimental Collaboration CUORE Collaboration
Primary author: TOMEI, Claudia (INFN - National Institute for Nuclear Physics) Presenter: TOMEI, Claudia (INFN - National Institute for Nuclear Physics) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 445 EPS-HEP 2017 / Report of Contributions New results from LUX
Contribution ID: 565 Type: Parallel Talk
New results from LUX Thursday, 6 July 2017 10:15 (15 minutes)
Two phase xenon time projection chambers have a number of attractive characteristics for their use in rare event searches. This is the case for the Large Underground Xenon (LUX) experiment, resulting in interesting new results. TPCs have been traditionally used in dark matter searches for nuclear recoils, and LUX reported the most sensitive limits to date for spin-independent and spin-dependent WIMP-neutron interactions for masses above 4 GeV/c2. Nevertheless, the low radioactivity background for electronic recoils of these devices makes them also highly attractive as a technology for use in searches that result in electron recoils. For example, LUX can probe for both axions coming from the Sun and axion-like particles (ALPs) moving within our Galaxy, arising from coupling to electrons via the so-called axio-electric effect. Although theoretically well motivated, axions have yet to be detected experimentally. We present the first results of the axion and ALP search with the LUX experiment. LUX data have also been used to set an upper limit on the half life of the two-neutrino double electron capture from the K-shell of 124Xe. We present the analysis and some preliminary results for this search.
Experimental Collaboration LUX
Presenters: Dr LINDOTE, Alexandre (LIP); LINDOTE, Alexandre (LIP) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 446 EPS-HEP 2017 / Report of Contributions The CMS Level-1 tau lepton and V…
Contribution ID: 566 Type: Poster Presentation
The CMS Level-1 tau lepton and Vector Boson Fusion triggers for the LHC Run II
The CMS experiment implements a sophisticated two-level triggering system composed ofLevel- 1, instrumented by custom-design hardware boards, and a software High-Level-Trigger. A new Level-1 trigger architecture with improved performance is now being used to maintain the thresh- olds that were used in LHC Run I for the more challenging luminosity conditions experienced during Run II. The upgrades to the calorimetry trigger will be described along with performance data. The algorithms for the selection of final states with tau leptons, both for precision measure- ments and for searches of new physics beyond the Standard Model, will be described in detail. The implementation of the first dedicated Vector Boson Fusion trigger algorithm will be presented as well, along with its performance on benchmark physics signals.
Experimental Collaboration CMS
Primary author: AMENDOLA, Chiara (LLR, Ecole Polytech., IN2P3-CNRS) Presenter: AMENDOLA, Chiara (LLR, Ecole Polytech., IN2P3-CNRS) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 447 EPS-HEP 2017 / Report of Contributions Generalized Gounaris-Sakurai for …
Contribution ID: 567 Type: Poster Presentation
Generalized Gounaris-Sakurai formula and ρ(770), ρ′(1450) and ρ′′(1700) masses and widths
It is demonstrated that Gounaris-Sakurai model of the pion electromagnetic form factor is based on the P-wave iso-vector ππ scattering phase-shift given by a generalized effective-range formula of the Chew-Mandelstam type, valid exclusively only at the elastic region up to 1GeV 2. Therefore the Gounaris-Sakurai model is justified to be used in a determination ofthe ρ(770) meson parameters from existing data, however, in no case in a determination of the inelastic ρ′(1450) and ρ′′(1700) resonance parameters.
We propose the pion electromagnetic form factor model found on the analyticity in the complex energy plane in which all three resonances ρ(770), ρ′(1450), ρ′′(1700) are defined on equal level as poles on unphysical sheets of the corresponding Riemann surface. The ρ(770) meson parameters obtained in a such way coincide with the parameters obtained in the framework of the GKPY Roy-like equations analysis..
Experimental Collaboration
Primary authors: BARTOS, Erik (Institute of Physics, Slovak Academy of Sciences); DUBNICKA, Stanislav (Institute of Physics, Slovak Academy of Sciences); DUBNICKOVA, Anna Zuzana (Comenius University (SK))
Presenter: BARTOS, Erik (Institute of Physics, Slovak Academy of Sciences) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 448 EPS-HEP 2017 / Report of Contributions Probing dark matter annihilation i …
Contribution ID: 568 Type: Parallel Talk
Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays Friday, 7 July 2017 10:00 (15 minutes)
We analyze cosmic-ray antiproton observations in the light of dark matter (DM) annihilation in our Galaxy using the recent precise AMS-02 measurements. Taking into account cosmic-ray propaga- tion uncertainties by fitting at the same time DM and propagation parameters we find a significant indication of a DM signal for various annihilation channels in the mass range between 40 and 130 GeV and with an annihilation cross-section close to the thermal value. Intriguingly, this signal is compatible with the DM interpretation of the Galactic center gamma-ray excess and recent obser- vation of dwarf satellite galaxies as we will demonstrate by perform a joint fit of the antiproton and gamma-ray data. As an example, we interpret our results in the Higgs Portal model.
Experimental Collaboration
Primary authors: HEISIG, Jan (RWTH Aachen University); CUOCO, Alessandro (RWTH Aachen TTK); KORSMEIER, Michael (University of Torino); KRAMER, Michael (Rheinisch-Westfaelische Tech. Hoch. (DE))
Presenter: HEISIG, Jan (RWTH Aachen University) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 449 EPS-HEP 2017 / Report of Contributions Future CMB projects
Contribution ID: 569 Type: Parallel Talk
Future CMB projects Friday, 7 July 2017 12:00 (15 minutes)
As the Planck mission is delivering its ultimate results, it has become clear that much is still to be learnt from additional observations of the Cosmic Microwave background. In the light of current results and remaining questions, I will discuss the scientific case of some of the main future CMB projects, their complementarity, and how to address the challenges of measurement accuracy and of detailed characterization of the observations that are required for precision cosmology with these future experiments.
Experimental Collaboration
Primary author: DELABROUILLE, Jacques (CNRS) Presenter: DELABROUILLE, Jacques (CNRS) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 450 EPS-HEP 2017 / Report of Contributions Statistical Methods for the Neutrin …
Contribution ID: 570 Type: Poster Presentation
Statistical Methods for the Neutrino Mass Hierarchy Determination
In the next decades several experiments will attempt to determine the neutrino mass hierarchy, 2 2 − 2 i.e. the sign of ∆m31. Since the two hierarchies are non-nested hypotheses, ∆χ = χIH χNH does not follow a one-degree-of-freedom chi-square distribution (for example, it can be negative): it√ is possible to prove that, under certain assumption, it follows a Gaussian distribution with σ = 2 ∆χ2; these assumptions seem to be verified for reactor neutrino experiments, at least insome simplified cases, but, for example, not for accelerator neutrino experiments. I will discussthe possible definitions of sensitivity, using both the Bayesian and the frequentist perspectives, how they should be modified if the conditions for Gaussianity are not fulfilled, and in which casesthe two procedure used to treat the pull parametrs (marginalization and minimization) yield the same ∆χ2. I will focus on the advantages and disadvantages of the different approaches proposed, and in particular on their physical interpretations.
Experimental Collaboration
Primary author: Prof. CIUFFOLI, Emilio (IMP, CAS) Presenter: Prof. CIUFFOLI, Emilio (IMP, CAS) Session Classification: Poster session
Track Classification: Neutrino Physics
October 6, 2021 Page 451 EPS-HEP 2017 / Report of Contributions Search for EWK Production of SU …
Contribution ID: 571 Type: Poster Presentation
Search for EWK Production of SUSY in Final States with Multiple Leptons at the CMS Experiment at the CERN LHC
Supersymmetry is able to solve a number of questions the celebrated standard model of particle physics has left unresolved. Particle collision experiments such as CMS, located at the CERN LHC, perform searches for the existence of supersymmetry in proton-proton collisions in a variety of different final states. In this poster, the results of the search for electroweak production ofSUSY in final states with two leptons of the same charge or multiple leptons with the full 2016dataset collected by the CMS detector is presented.
Experimental Collaboration
Presenter: HEIDEGGER, Constantin (Eidgenoessische Technische Hochschule Zuerich (CH)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 452 EPS-HEP 2017 / Report of Contributions Neutrino Physics at ADS Facilities
Contribution ID: 572 Type: Parallel Talk
Neutrino Physics at ADS Facilities Thursday, 6 July 2017 18:15 (15 minutes)
Accelerator Driven System (ADS) subcritical reactors are being developed around the world. The main goals of this kind of facility are to produce energy and, at the same time, to dispose of nuclear waste, which will be used to power nuclear reactors. Since, by itself, used nuclear fuel is not able to sustain a chain reaction, the additional neutrons needed will be supplied by a high-intensity accelerator, where a proton beam will be hitting a spallation target. This accelerator will produce, as a by-product, a large quantity of neutrinos: I will discuss the opportunities offered by this kind of facilities to the study of neutrino physics. I will focus in particularly on the accelerators that will be constructed as part of the China-ADS program: here in the first phases of the project ν¯e can be produced via Isotope Decay At Rest (IsoDAR): they can be detected with liquid scintillators and used to provide competitive bounds on sterile neutrinos in the disappearance channel. In the next phases, when the beam energy is higher, ν¯µ will be produced via muon Decay At Rest (µDAR): in this phase it will be possible to measure the CP-violating phase δCP and to look for experimental signs of the presence of sterile neutrinos in the appearance channel, testing the LSND and MiniBooNE anomalies.
Experimental Collaboration
Primary author: Prof. CIUFFOLI, Emilio (IMP, CAS) Presenter: Prof. CIUFFOLI, Emilio (IMP, CAS) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 453 EPS-HEP 2017 / Report of Contributions Enhanced scope of a Phase-2 CMS …
Contribution ID: 573 Type: Poster Presentation
Enhanced scope of a Phase-2 CMS detector for the study of physics beyond the SM at the high-luminosity LHC
To extend the LHC physics program, it is foreseen to operate the LHC in the future with an unprece- dented high luminosity. To maintain the experiment’s physics potential in the harsh environment of this so-called phase-2, the detector will be upgraded. At the same time the detector acceptance will be extended and new features such as a L1 track trigger will be implemented. Simulation studies evaluated the performance of the new, proposed detector components and the impact on representative physics channels. In case of searches for new physics, these studies also shape the future research program. The sensitivity to find new physics beyond the SM is significantly im- proved and will allow to extend the reach for heavy vector bosons, for SUSY, dark matter and exotic long-lived signatures, to name a few.
Experimental Collaboration
Presenter: HOEPFNER, Kerstin (Rheinisch-Westfaelische Tech. Hoch. (DE)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 454 EPS-HEP 2017 / Report of Contributions PROJECT JUNO: ADVANCING G …
Contribution ID: 575 Type: Parallel Talk
PROJECT JUNO: ADVANCING GENDER EQUALITY IN PHYSICS CAREERS IN HIGHER EDUCATION IN THE UK Friday, 7 July 2017 17:00 (15 minutes)
The Institute of Physics (IOP) has a longstanding interest in diversity issues, particularly around the participation of girls and women in physics, who are under-represented in physics education and employment. In 2003, the Institute introduced a Site Visit scheme, in which selected panels visited physics departments and produced a dedicated report on their “gender inclusiveness”. After two years, the results of these visits were condensed into a general report: Women in University Physics Departments: a Site Visit Scheme. Building upon the best practice identified in this in- fluential report, in 2007 the IOP established Project Juno, an award scheme that aims to promote gender equality in higher education physics departments. The Juno Principles provide a frame- work for specific actions to improve the participation and retention, particularly of women, in physics careers. The main aims of the scheme are to develop an equitable, open and transparent working culture in which students and staff, men and women, can all achieve their full potential; to promote open discussion of gender and other equality issues; and to encourage departments to determine priorities for action. Departments submit for the award and are assessed by an in- dependent Panel of physicists with longstanding experience of addressing gender equality issues. There are three levels of the scheme (Supporter, Practitioner and Champion) and almost allofthe 55 physics departments in the UK and Ireland are now participating, together with Research In- stitutes and one company. Currently, there are 19 Supporters, 14 Supporters and 17 Champions.
Experimental Collaboration
Primary authors: Prof. GIBSON, Valerie (University of Cambridge); Ms DYER, Jennifer (Institute of Physics)
Presenter: Prof. GIBSON, Valerie (University of Cambridge) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 455 EPS-HEP 2017 / Report of Contributions Status of the CBM experiment at F …
Contribution ID: 576 Type: Parallel Talk
Status of the CBM experiment at FAIR Friday, 7 July 2017 18:00 (15 minutes)
The Compressed Baryonic Matter (CBM) experiment at the Facility for Antiproton andIonRe- search (FAIR) will explore the phase diagram of strongly interacting matter in the regions of high- est net-baryonic densities and moderate temperatures. The high beam intensities that will be delivered from FAIR’s SIS-100 heavy-ion synchrotron and possible upgrades will enable address- ing several physics cases: The equation-of-state at neutron star core densities, the onset of chiral symmetry restoration and the identification of a deconfinement phase transition athigh µB as well as other new phases of strongly-interacting matter. The related observables include collective flow of hadrons, particle production at threshold energies, in-medium modifications ofhadrons, fluctuations, and the production of dileptons, strangeness and charm. The experiment will be based on detector systems capable of the high interaction and charged- particle rates that are pre-requisites of the programme, and include silicon tracking and micro- vertex detection, electron and muon measurement, hadron identification, and electromagnetic and zero-degree calorimentry. As most of the observables require full detector read-out for trigger de- cisions, the CBM experiment is based on delivering streamed detector data to a computing farm where on-line event reconstruction is performed based on time-stamped detector information. The presentation will overview the physics cases of the CBM experiment and the detector concept chosen. The status of the technical developments and the timeline for the experiment to takeshape will be discussed. The Silicon Tracking System will be addressed in somewhat more detail asthe development and construction of this detector is essential for the day-1 physics.
Experimental Collaboration CBM
Primary author: HANS RUDOLF SCHMIDT Presenter: HANS RUDOLF SCHMIDT Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 456 EPS-HEP 2017 / Report of Contributions CYGNUS: development of a high r …
Contribution ID: 577 Type: Parallel Talk
CYGNUS: development of a high resolution TPC for rare events Friday, 7 July 2017 11:30 (15 minutes)
In this presentation the R&D of a gas detector prototype for high precision tracking of low energy nuclear recoils over large gas volumes will be presented. In our prototype, the scintillation light accompanying the electronic avalanches in a triple GEM structure is detected by a CMOS-based camera through a suitable lens. The CMOS sensors provide a very high granularity along with a very low noise (of the order of a single photon) and a very high sensitivity (70% of quantum efficiency). Once operated with a large aperture and suitable focal length lens, large areas can be imaged at reduced costs. Moreover, the optical approach is attempted in presence of a highly electronegative gas suitable for negative ion drift (SF6 and its admixtures). An additional innovative element is the concurrent readout of the light by means of a suitable photomultiplier system. It will complement the readout by providing the time resolution necessary to separate, for fiducialization purposes, the contributions of the different charge carriers within the same nuclear recoil ionization cluster. Recent tests on beam demonstrated the achievement of resolutions of the order on tens of mu;m in the XY plane and hundreds of mu;m in Z and the feasibility, for the first time ever, of the Negative Ion Drift mechanism at ambient pressure with a very small amount of SF6 percentage. The idea is to use such a detector in future large scale experiments for directional DarkMatter searches and for measurements of coherent neutrino scattering on nuclei.
Additional applications of this detector might be in the realm of neutron detection, X-ray polarime- try and particle therapy.
Experimental Collaboration CYGNUS TPC
Primary authors: PINCI, Davide (Sapienza Universita e INFN, Roma I (IT)); MAZZITELLI, Gio- vanni (INFN); BARACCHINI, Elisabetta; CAVOTO, Gianluca (Sapienza Universita e INFN, Roma I (IT)); MARAFINI, Michela (INFN Roma1 - Centro Fermi); VOENA, Cecilia (Universita e INFN, Roma I (IT)); RENGA, Francesco; DI MARCO, Emanuele (CERN); Dr TOMASSINI, Sandro (Laboratori Nazion- ali Frascati - INFN); Mr ANTOCHI, Christian Vasile (Sapienza Università di Roma) Presenter: PINCI, Davide (Sapienza Universita e INFN, Roma I (IT)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 457 EPS-HEP 2017 / Report of Contributions The turnaround radius as a probe …
Contribution ID: 579 Type: Parallel Talk
The turnaround radius as a probe of dark energy and modified gravity Friday, 7 July 2017 10:30 (15 minutes)
In an accelerating universe a maximum radius exists above which a shell of test particles cannot collapse and disperses due to the cosmic expansion. Observations of this turnaround radius for large structures could constrain the effective equation of state of dark energy. We use the Hawking quasilocal mass to make theconcept of turnaround radius well defined in general relativity and then we extend it to modified theories of gravity for which the gravitational slip is non-vanishing.
[Based on V. Faraoni, M. Lapierre-Leonard & A. Prain 2015,JCAP 10, 013; V. Faraoni 2016, Phys. Dark Universe 11, 11]
Experimental Collaboration
Primary author: Prof. FARAONI, Valerio (Bishop’s University) Presenter: Prof. FARAONI, Valerio (Bishop’s University) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 458 EPS-HEP 2017 / Report of Contributions Measurement of Inelastic cross- …
Contribution ID: 580 Type: Parallel Talk
Measurement of Inelastic cross-section and Central Exclusive Production with the LHCb detector Thursday, 6 July 2017 09:30 (15 minutes)
The forward acceptance of LHCb, 2.0 < y < 5.0, provides a complementary reach to thegeneral purpose detectors on LHC. LHCb measurements of the inelastic cross-section and related results will be presented, as well as a comparison to Run 1 results. The cross-section for central exclusive production of J/psi and Psi(2S) mesons at 13 TeV ismeasured using the LHCb detector. Proton dissociative backgrounds are significant reduced compared to previous measurements through the use of forward shower counters, recently installed for Run 2. Plans for future measurements are also presented to exploit the new Run2 dataset.
Experimental Collaboration LHCb
Presenter: SCHMELLING, Michael (Max-Planck-Gesellschaft (DE)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 459 EPS-HEP 2017 / Report of Contributions Low-mass di-muon searches with t …
Contribution ID: 581 Type: Parallel Talk
Low-mass di-muon searches with the LHCb detector Friday, 7 July 2017 10:00 (15 minutes)
A flexible trigger system, excellent vertex locator, invariant mass resolution and forward accep- tance allow unique exotica measurements to be performed at LHC energies using data collected with the LHCb detector. A summary of results will be presented, focusing in searches involving low mass dimuon resonances, sensitive to a wide range of New Physics models.
Experimental Collaboration LHCb
Primary author: GERSABECK, Marco (University of Manchester (GB)) Presenter: LANGENBRUCH, Christoph Michael (Rheinisch-Westfaelische Tech. Hoch. (DE)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 460 EPS-HEP 2017 / Report of Contributions Search for long-lived particles at L …
Contribution ID: 582 Type: Parallel Talk
Search for long-lived particles at LHCb Friday, 7 July 2017 17:15 (15 minutes)
A flexible trigger system, excellent vertex locator, particle identification detectors, andforward acceptance allow unique exotica measurements to be performed at LHC energies using data col- lected with the LHCb detector. A summary of results will be presented, including searches for long-lived particles decaying into jet pairs or semi-leptonically.
Experimental Collaboration LHCb
Primary author: GERSABECK, Marco (University of Manchester (GB)) Presenter: LUSIANI, Alberto (Scuola Normale Superiore and INFN Pisa) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 461 EPS-HEP 2017 / Report of Contributions Time-dependent CP violation in th …
Contribution ID: 585 Type: Parallel Talk
Time-dependent CP violation in the B system at LHCb Friday, 7 July 2017 16:30 (15 minutes)
Time-dependent CP-violation measurements allows to determine the mixing-induced CP-violating phases phi_s and beta. The measurement of the phase phi_s in the Bs-Bsbar system is oneofthe key goals of the LHCb experiment. It has been measured at LHCb exploiting the Run I data set and using several decay channels. In particular, the most recent Run I results that will be presented at this conference, have been obtained analyzing Bs0->J/psi(->mu+mu-) K+K- candidates in the mass region above the phi(1020) resonance and Bs0 -> Psi(2S) phi candidates. Moreover, new results of time-dependent CP violation studies of b->ccbar d/s decays by the LHCb experiment are presented. Namely, a new measurement of CP-violation in the B0-B0bar system using B0->psi(2S) KS0 and B0->J/psi(->e+e-) KS0 decays with Run-I data sample will be shown for the first time.
Experimental Collaboration LHCb
Presenter: ESEN, Sevda (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 462 EPS-HEP 2017 / Report of Contributions Charmless B decays at LHCb
Contribution ID: 586 Type: Parallel Talk
Charmless B decays at LHCb Thursday, 6 July 2017 17:45 (15 minutes)
Charmless b-hadron decays are CKM suppressed in the Standard Model, which brings the tree amplitudes to levels comparable with corresponding loop amplitudes. Hence, new particles not foreseen in the SM that appear in the loops may alter observables of these decays. We present the most recent measurements of branching ratios and CP asymmetries in charmless b-hadron decays to two- and multi-body final states. Measurements of polarisation fractions and triple-product asymmetries for B->VV decays, where V indicates a vector meson, are also presented.
Experimental Collaboration LHCb
Presenter: RODRIGUES, Eduardo (University of Cincinnati (US)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 463 EPS-HEP 2017 / Report of Contributions Higgs effective …
Contribution ID: 588 Type: Parallel Talk
Higgs effective boldsymbolHℓiℓj vertex from heavy boldsymbolνR and applications to LFV phenomenology Saturday, 8 July 2017 11:30 (15 minutes)
We present a new computation of the Higgs effective vertex Hℓiℓj generated from heavy right handed neutrinos, within the Mass Insertion Approximation and to one-loop level. The simple an- alytical results found have interesting applications to phenomenology of Lepton Flavour Violation. In particular, we discuss some of these implications for Higgs mediated LFV processes.
Experimental Collaboration
Primary author: Prof. HERRERO, Maria Jose (IFT-UAM) Presenter: Prof. HERRERO, Maria Jose (IFT-UAM) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 464 EPS-HEP 2017 / Report of Contributions Shannon entropy and hadron decays
Contribution ID: 589 Type: Poster Presentation
Shannon entropy and hadron decays
How much information is added to the Review of Particle Physics when a new decay branching ratio of a hadron is measured and reported? This is quantifiable by Shannon’s information entropy. Itmay be used at two levels, the distribution of decay-channel probabilities, and the distribution of individual quantum-state probabilities (integrating the later provides the former). We illustrate the concept with some examples.
Experimental Collaboration
Primary authors: LLANES-ESTRADA, Felipe J. (Univ. Complutense de Madrid); M. ÁNGELES GARCÍA FERRERO, ANA PORRAS, PEDRO CARRASCO MILLÁN, ESTEBAN MANUEL SÁNCHEZ GARCÍA
Presenter: LLANES-ESTRADA, Felipe J. (Univ. Complutense de Madrid) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 465 EPS-HEP 2017 / Report of Contributions Development and Integration of …
Contribution ID: 590 Type: Poster Presentation
Development and Integration of CT-PPS Fast Simulation on CMS Software
The CT-PPS (CMS-TOTEM Precision Proton Spectrometer) project is a combined effort oftheCMS and TOTEM collaborations to construct a detector with the purpose of studying central exclusive production (CEP) in proton-proton collisions. This poster describes the simulation and reconstruc- tion code for the CT-PPS detectors implemented in CMS FastSim. The protons scattered from the collision at very low polar angles are transported along the LHC beamlines from the generated vertex to the entrance of the detectors using Hector, to define simulated hits. The CT-PPS recon- structed tracks are obtained from the hits in the tracking detectors which are calculated by Hector and accepted within an impact parameter cut, to determine the kinematical objects at the vertex. The timing hits are then added to the tracks. Also some MC physics example results areshown here.
Experimental Collaboration CMS
Primary author: FONSECA DE SOUZA, Sandro (Universidade do Estado do Rio de Janeiro (BR))
Presenter: FONSECA DE SOUZA, Sandro (Universidade do Estado do Rio de Janeiro (BR)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 466 EPS-HEP 2017 / Report of Contributions Spontaneous mass generation and …
Contribution ID: 591 Type: Poster Presentation
Spontaneous mass generation and the small dimensions of the Standard Model gauge groups U(1),SU(2) and SU(3)
The gauge symmetry of the Standard Model is SU(3)×SU(2)×U(1) on unknown reasons. Oneaspect that can be addressed is the low dimensionality of all its subgroups. Why not much larger groups like SU(7), or for that matter, SP(38) or E7? We observe that fermions charged under large groups acquire much bigger dynamical masses, all things being equal at a high e.g. GUT scale, than ordinary quarks. Should such multicharged fermions exist, they are too heavy to be observed today and have either decayed early on (if they couple to the rest of the Standard Model) or become reliquial dark matter (if they don’t).
The result follows from strong antiscreening of the running coupling for those larger groups (with an appropriately small number of flavors) together with scaling properties of the Dyson– Schwinger equation for the fermion mass.
Experimental Collaboration
Primary authors: LLANES-ESTRADA, Felipe J. (Univ. Complutense de Madrid); GUILLERMO GARCIA FERNANDEZ AND JESUS GUERRERO ROJAS
Presenter: LLANES-ESTRADA, Felipe J. (Univ. Complutense de Madrid) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 467 EPS-HEP 2017 / Report of Contributions Probing the Higgs trilinear self- …
Contribution ID: 592 Type: Parallel Talk
Probing the Higgs trilinear self-coupling via single Higgs production and precision physics. Friday, 7 July 2017 10:45 (15 minutes)
In the Standard Model of the Electroweak Interactions the value of the Higgs trilinear self-coupling is predicted from its relation to the Higgs mass and the Fermi constant. However, the experimental verification of this prediction through the measurement of the double Higgs production is extremely challenging. I present the possibility of probing an anomalous trilinear coupling indirectly, through its effects in the single Higgs production and decay processes at the LHC and in the precision observables. Indeed, although these processes do not depend on this coupling at the tree level, they are sensitive to the Higgs self-coupling via loop effect. The constraints on the trilinear Higgs self-coupling that can be obtained from various observables, like the signal strength of the different channels, the cross-section of the associate Higgs production with top quarks and the measurement of the W mass, are presented.
Experimental Collaboration
Primary author: DEGRASSI, Giuseppe (Universita e INFN, Roma Tre (IT)) Presenter: DEGRASSI, Giuseppe (Universita e INFN, Roma Tre (IT)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 468 EPS-HEP 2017 / Report of Contributions CaloCube: a new homogenous cal …
Contribution ID: 593 Type: Parallel Talk
CaloCube: a new homogenous calorimeter with high-granularity for precise measurements of for high-energy cosmic rays in space. Friday, 7 July 2017 10:25 (17 minutes)
The direct observation of high-energy cosmic rays, up to the PeV region, will depend onhighly performing calorimeters, and the physics performance will be primarily determined by their ge- ometrical acceptance and energy resolution.Thus, it is fundamental to optimize their geometrical design, granularity, and absorption depth,with respect to the total mass of the apparatus, probably the most important constraints for a space mission. Furthermore a calorimeter based space experiment can provide not only flux measurements, but also energy spectra and particle identification to overcome some of the limitations of ground based experiments. Calocube is a homogeneous calorimeter whose basic geometry is cubic and isotropic, so as to de- tect particles arriving from every direction in space, thus maximizing the acceptance; granularity is obtained by filling the cubic volume with small cubic scintillating crystals. A prototype, instrumented with CsI(Tl) cubic crystals, has been constructed and tested with par- ticle beams. An overview of the obtained results will be presented and the perspectives for future space experiments will be discussed.
Experimental Collaboration CaloCube
Primary author: Dr BIGONGIARI, Gabriele (INFN-Pisa) Presenter: Dr BIGONGIARI, Gabriele (INFN-Pisa) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 469 EPS-HEP 2017 / Report of Contributions The ALICE ITS upgrade
Contribution ID: 594 Type: Parallel Talk
The ALICE ITS upgrade Saturday, 8 July 2017 09:45 (15 minutes)
The ALICE experiment at CERN is built to study the properties of the strongly interacting matter created in heavy-ion collisions at the LHC. A major upgrade of its Inner Tracking System (ITS) is currently undergoing, which will increase the data taking capability by more than two orders of magnitude. At the same time, the secondary vertexes reconstruction precision will improve by at least a factor 3. The enabling technology for such performance boost is the adoption of custom-designed Mono- lithic Active Pixel Sensors (MAPS) to instrument the 10 square meters ITS sensible surface. Manu- factured in the TowerJazz 180 nm CMOS imaging sensor process on wafers with a high resistivity epitaxial layer, the ALice PIxel DEtectors (ALPIDE) embed several design innovations to optimize charge collection efficiency, sustainable hit rate and low power consumption. The connections topology developed to read, control and supply the about 25000 sensors composing the ITS, and the technical solutions adopted to mechanically support them, also contribute to reach the target performance level.
In this talk we will go through the most innovative elements which characterize the ITS design, illustrating the driving physics targets and discussing the adopted solutions, together with the major problems faced to implement them. Expected final system performance and actual sensors characterization figures will provide compelling evidence of the advantages monolithic technology can bring to HEP tracking apparatus.
Experimental Collaboration ALICE
Presenter: CAMERINI, Paolo (Universita e INFN, Trieste (IT)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 470 EPS-HEP 2017 / Report of Contributions Tracks of resonances in electrowe …
Contribution ID: 595 Type: Parallel Talk
Tracks of resonances in electroweak effective Lagrangians Thursday, 6 July 2017 17:00 (15 minutes)
Taking into account that LCH searches for New Physics are failing, the electroweak effective the- ory seems to be appropriate to deal with current energies. Tracks of new higher scales can be stud- ied through next-to-leading corrections of the electroweak effective theory. Assuming strongly- coupled scenarios we have considered high-energy Lagrangians which incorporate explicitly new heavy fields. Then, and integrating out these heavy resonances, we study the pattern of low-energy constants among the light fields which are generated by the massive states. A generic non-linear realization of the electroweak symmetry breaking with a singlet Higgs is assumed. The impor- tance of the high-energy behaviour of the underlying theory and different possible descriptions of massive spin-1 resonances are analysed.
Experimental Collaboration
Primary author: ROSELL, Ignasi (Universidad CEU Cardenal Herrera & IFIC, Valencia) Co-authors: PICH, Antonio (University of Valencia); SANZ-CILLERO, Juan José (Universidad Com- plutense de Madrid); SANTOS, Joaquin (Universitat de València & IFIC) Presenter: ROSELL, Ignasi (Universidad CEU Cardenal Herrera & IFIC, Valencia) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 471 EPS-HEP 2017 / Report of Contributions Darkside Status and Prospects
Contribution ID: 596 Type: Parallel Talk
Darkside Status and Prospects Thursday, 6 July 2017 09:45 (15 minutes)
DarkSide uses dual-phase Liquid Argon Time Projection Chambers to search for WIMP dark mat- ter. The current experiment, DarkSide-50, has a 50-kg-active-mass TPC surrounded by aborated- liquid-scintillator neutron detector and a water Cherenkov detector. DarkSide-50 has been run- ning continuously since 2013, initially with atmospheric argon and then, starting in mid-2015, with argon from underground. The underground argon (UAr) is measured to contain lower Ar- 39, the largest source of background, than atmospheric argon by a factor of >1000. After initial analyses of 50 live-days of atmospheric argon and 70 live-days of UAr, we have now collected 500 live-days of additional WIMP search data with UAr. This is being analyzed in a blind analysis. The proposed next stage of the DarkSide program is DarkSide-20k, a 20-tonne fiducial massTPC designed to have background well below that from coherent scattering of solar and atmospheric neutrinos.
Experimental Collaboration Darkside
Primary author: MARTOFF, Jeff Presenter: MARTOFF, Jeff Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 472 EPS-HEP 2017 / Report of Contributions Low radioactivity Argon and SiPM …
Contribution ID: 597 Type: Parallel Talk
Low radioactivity Argon and SiPM at cryogenic temperatures for the next generation dark matter searches Friday, 7 July 2017 10:08 (17 minutes)
DarkSide-20k is a proposed 20 tonne fiducial mass liquid argon TPC that will perform an instru- mental background-free search for WIMP dark matter. The TPC will be outfitted with morethan 125,000 silicon photomultipliers (SiPM) grouped into 5210 single-channel, 25 cm2 photosensors that are sensitive to single photoelectrons, and will be filled with low radioactivity Argon extracted from underground CO2 wells in Cortez, Colorado in the US. We will present the performance of the photosensor and associated low-noise electronics at liquid argon temperature and discuss the strategy for scaling up production for DarkSide-20k as well as an overview of the Urania and Aria projects which aim to extract and purify 100 kg/day of underground Argon for use in Darkside-20k.
Experimental Collaboration Darkside
Primary author: Dr BONIVENTO, Walter Marcello (INFN Cagliari) Presenter: Dr BONIVENTO, Walter Marcello (INFN Cagliari) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 473 EPS-HEP 2017 / Report of Contributions Angular correlations of identified …
Contribution ID: 599 Type: Parallel Talk
Angular correlations of identified particles in the STAR BES data Friday, 7 July 2017 10:30 (15 minutes)
The angular correlation function (CF) refers to the correlation of particles in the relative pseudo- rapidity and relative azimuthal angle. It is used to study strongly interacting matter properties at relativistic energies. Recent results from the ALICE experiment at LHC show unexpected struc- tures of CF in the proton-proton and antiproton-antiproton correlations. Also results from the STAR experiment at RHIC on directed flow (dv1/dy) for the net-baryons are intriguing. Both ob- servations are suggesting that study of CF of identified particles can provide more detailed insight into nuclear matter properties, in comparison with measurements of unidentified particles.
The STAR capability of identifying particles at mid rapidity, paired with the data frombroaden- ergy range of Au+Au collisions in the Beam Energy Scan program, provide unique opportunity to investigate the phase diagram of strongly interacting matter through√ the CF analysis. In this talk recent STAR experimental results from the Au+Au collisions at sNN = (7.7−200) GeV from the RHIC’s Beam Energy Scan will be presented.
Experimental Collaboration STAR
Primary author: LIPIEC, Andrzej (Warsaw University of Technology) Presenter: LIPIEC, Andrzej (Warsaw University of Technology) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 474 EPS-HEP 2017 / Report of Contributions KLOE-2 results on hadron physics
Contribution ID: 600 Type: Parallel Talk
KLOE-2 results on hadron physics Friday, 7 July 2017 14:45 (15 minutes)
The KLOE experiment has collected 2.5 fb-1 at the e+e- collider DAPHNE. The upgraded detector KLOE-2 has already collected 3.5 fb-1 with a new beam crossing scheme, allowing for areduced beam size and increased luminosity. Analysis of KLOE data is still in progress, providing new important results in the light meson sector. VPgamma* transitions have been studied using the phi -> eta e+ e-, phi -> pi0 e+ e- decays. For both processes, we obtain the the most precise determination of the BR and of the transition form factor. KLOE data have been also exploited to obtain a new, precise result on the isospin-violating decay eta–>pi+pi-pi0, aiming to a better determination of the light-quark mass ratio. The analysis de- termines with very good accuracy the parameters of the decay matrix element. The Dalitz plot density is parametrised as a polynomial expansion up to cubic terms in X and Y. The measurement is sensitive to all charge conjugation conserving terms, providing an improvement of a factor of two on the statistical uncertainty of all parameters with respect to previous experiments. Smaller systematic uncertainties have been also achieved. The un-binned integrated left-right, quadrant and sextant charge asymmetries have also been measured, providing an accurate test of C parity conservation. The values extracted are consistent with zero at 10^-4 level, thus improving existent evaluations.
Precision physics requires appropriate inclusion of higher order effects and the knowledge of very precise input parameters of the electroweak Standard Model. The running of the QED coupling constant alpha in the time-like region in the energy range 0.6-0.975 GeV has been measured for the first time using the KLOE detector. The result shows a clear contribution of the rho-omega resonances to the photon propagator with a significance of the hadronic contribution of more than 5 sigmas. For the first time the real and imaginary part of Delta(alpha(s)) have been extracted.
Experimental Collaboration KLOE-2
Presenter: KUPSC, Andrzej Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 475 EPS-HEP 2017 / Report of Contributions New limits on heavy neutrino fro …
Contribution ID: 601 Type: Parallel Talk
New limits on heavy neutrino from NA62 Friday, 7 July 2017 17:45 (15 minutes)
The NA62 experiment at CERN collected a large sample of charged kaon decays in flightwitha minimum bias trigger in 2007. Upper limits on the rate of the charged kaon decay into a muon and a heavy neutral lepton (HNL) obtained from this data are reported for a range of HNL masses.
Experimental Collaboration NA62
Primary author: KOVAL, Michal Presenter: KOVAL, Michal Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 476 EPS-HEP 2017 / Report of Contributions Precision measurement of the for …
Contribution ID: 602 Type: Parallel Talk
Precision measurement of the form factors± of the charged kaon semileptonic decays Kl3 Saturday, 8 July 2017 12:45 (15 minutes)
The NA48/2 experiment presents a final result of the charged kaon semileptonic decaysform ± ± factors measurement based on 4.28 million Ke3 and 2.91 million Kµ3 selected ± decays collected in 2004. The result is competetive with other measurements in Kµ3 ± mode and has a smallest uncertainty for Ke3, that leads to the most precise ± | | combined Kl3 result and allows to reduce the form factor uncertainty of VUS .
Experimental Collaboration na48
Presenter: PICCINI, Mauro (INFN - Sezione di Perugia (IT)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 477 EPS-HEP 2017 / Report of Contributions Search for hidden-sector particles …
Contribution ID: 605 Type: Parallel Talk
Search for hidden-sector particles at NA62 Friday, 7 July 2017 18:00 (15 minutes)
Fixed target experiments are a particularly useful tool in the search of very weakly coupled par- ticles in the MeV-GeV range, which are of interest, e.g. as potential Dark Matter mediators. The NA62 experiment at the CERN SPS is currently taking data to measure the rare decay K → πνν¯. Owing to the high beam-energy and a hermetic detector coverage, NA62 also has the opportunity to directly search for a plethora of hidden-sector particles (visible or invisible searches). We will detail on status and prospects of these searches.
Experimental Collaboration NA62
Presenter: LANFRANCHI, Gaia (INFN e Laboratori Nazionali di Frascati (IT)) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 478 EPS-HEP 2017 / Report of Contributions Status of Light Sterile Neutrinos
Contribution ID: 606 Type: Parallel Talk
Status of Light Sterile Neutrinos Friday, 7 July 2017 09:00 (30 minutes)
I review the experimental indications in favor of short-baseline neutrino oscillations. I discuss their interpretation in the framework of 3+1 neutrino mixing with a sterile neutrino at the eV scale. I present the results of the updated 3+1 global fit including the recent MINOS, IceCube and NEOS data. I discuss the implications for future neutrino oscillations and neutrinoless double-beta decay experiments.
Experimental Collaboration
Primary author: GIUNTI, Carlo (INFN - National Institute for Nuclear Physics) Presenter: GIUNTI, Carlo (INFN - National Institute for Nuclear Physics) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 479 EPS-HEP 2017 / Report of Contributions What cosmology can tell us about …
Contribution ID: 607 Type: Parallel Talk
What cosmology can tell us about neutrinos Friday, 7 July 2017 14:30 (30 minutes)
Neutrinos deeply affect cosmological observables, both in the early Universe and at low redshift. Thanks to these fingerprints, cosmology can constrain neutrino properties such as the absolute neutrino mass scale.
In this talk I will review the up to date cosmological constraints on neutrino physics; I will also show how future galaxy surveys can potentially pin down the neutrino mass sum.
Experimental Collaboration
Primary author: ARCHIDIACONO, Maria Presenter: ARCHIDIACONO, Maria Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 480 EPS-HEP 2017 / Report of Contributions HEP interactive activities in high s …
Contribution ID: 608 Type: Parallel Talk
HEP interactive activities in high schools in the framework of the CREATIONS project Friday, 7 July 2017 15:15 (15 minutes)
CREATIONS is a three-year long European Union funded project, which aims to increase the young people’s interest in science. Sixteen partners from ten European countries develop creative ap- proaches based on science and art for an engaging science classroom. The project is now in its 2nd year and a variety of events have already taken place. We have been developing advanced digital tools and educational scenaria in order to facilitate the introduction of HEP in high schools. In the framework of CREATIONS we have performed a number of interventions in Greek schools which take the form of half-day masterclasses. The students, working in their schools’ computer labs, have the opportunity to use the inquiry based science education scenaria which have em- bedded tools for analysing data from the ATLAS experiment or discovering how the LHC works through playful learning. The work of students is monitored step by step by a specially designed integrated assessment system which consists of three different layers. • A figurative test, delivered before and after the activity, to measure whether the students’ expo- sure to particle research has helped them recognize different patterns in the provided shapes. • A set of assessment questions in each of the four phases of the scenario which uses as a reference the PISA 2012 Framework developed for the assessment of problem solving competence. • A number of indicators embedded in the HYPATIA online analysis tool, which provide informa- tion about the ability of the students to understand and handle the complex analysis of short lived particle signatures in the state-of-the-art ATLAS detector. The data analysis, which will be summarized, demonstrates that the interventions in theclass- rooms have followed the planned format (activities organisation, resources used, time devoted per inquiry phase). In addition the results provide clear indication that students involved are demon- strating deep involvement and high problem solving skills.
Experimental Collaboration
Primary author: KOURKOUMELIS, Christine (National and Kapodistrian University of Athens (GR))
Co-authors: Dr SOTIRIOU, Sofoklis (Ellinogermaniki Agogi School); VOURAKIS, Stelios (University of Athens)
Presenter: KOURKOUMELIS, Christine (National and Kapodistrian University of Athens (GR))
Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 481 EPS-HEP 2017 / Report of Contributions Search for the Higgs boson produc …
Contribution ID: 609 Type: Poster Presentation
Search for the Higgs boson produced in association with a Z or W boson and decaying to b quarks with CMS
In 2012, the ATLAS and CMS Collaborations announced the discovery of a new state with a mass around 125 GeV, compatible with the Standard Model Higgs boson. The measurements of this new particle’s properties, in particular its couplings to other elementary particles, are important to test the predictions of the Standard Model. In this poster, the coupling of the Higgs boson with beauty quarks is explore using Higgs boson production associated with a Z or W. This is the first update since the 2014 CMS result, which reported a 2.1 sigma excess over the background-only hypothesis. The analysis is based on 36/fb data from p-p collisions at 13 TeV centre-of-mass energy, collected by CMS in 2016. The higher luminosity and new energy regime of the 2016 dataset increases the expected significance relative to the Run 1 result.
An overview of the analysis strategy, mainly focusing on the associated Z(ll)+Higgs(bb) topology, and the new results from the 2016 dataset are given.
Experimental Collaboration CMS
Primary author: CMS COLLABORATION Presenter: BERGER, Pirmin (Eidgenoessische Technische Hochschule Zuerich (CH)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 482 EPS-HEP 2017 / Report of Contributions CP violation in b baryons at LHCb
Contribution ID: 610 Type: Parallel Talk
CP violation in b baryons at LHCb Friday, 7 July 2017 16:45 (15 minutes)
The violation of CP symmetry is well established nowadays in the K and B mesons sectors. How- ever CPV has not been observed in the baryonic sector. Charmless b-baryon decays represent a promising opportunity in this respect since their amplitudes receive contributions from tree level diagrams where the CKM element Vub appears. In addition, these decays are sensitive to possible physics beyond the SM, since they receive relevant contributions also from penguin topologies. We present the most recent measurements of charmless b-baryon decays performed by LHCb, in- cluding branching ratios and T-odd correlations.
Experimental Collaboration LHCb
Presenter: SILVA COUTINHO, Rafael (Universitaet Zuerich (CH)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 483 EPS-HEP 2017 / Report of Contributions Charm and CP violation measurem …
Contribution ID: 611 Type: Parallel Talk
Charm and CP violation measurements from the LHC Friday, 7 July 2017 15:00 (30 minutes)
Measurements of CP- and flavour-violating transitions of charm and beauty hadrons are very pow- erful probes for physics beyond the standard model, that are complementary to the direct searches performed at the energy frontier. Experiments at the LHC are, since the start of Run 1 (2011-2012) playing a crucial role in this sector. The most recent highlights from LHCb, ATLAS and CMSare presented, based on both Run 1 and Run 2 (2015-) data, and prospects for the future are discussed.
Experimental Collaboration LHCb
Presenter: DI CANTO, Angelo (CERN) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 484 EPS-HEP 2017 / Report of Contributions Searches for rare charm decays at …
Contribution ID: 612 Type: Parallel Talk
Searches for rare charm decays at LHCb Friday, 7 July 2017 17:15 (15 minutes)
Following the hints for deviations from the Standard Model in rare B meson decays, searches for rare and forbidden decays of charmed hadrons become a hot topic again. We present recent results on rare D0 and Lc decays.
Experimental Collaboration LHCb
Presenter: MITZEL, Dominik Stefan (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 485 EPS-HEP 2017 / Report of Contributions New physics searches with EW pe …
Contribution ID: 615 Type: Parallel Talk
New physics searches with EW penguins and radiative B decays at LHCb Thursday, 6 July 2017 11:15 (15 minutes)
Rare b->s(gamma,ll) decays are flavour changing neutral current processes that are forbidden at the lowest perturbative order in the Standard Model (SM). As a consequence, new particles in SM extensions can significantly affect the branching fractions of these decays and give rise to new sources of CP-violation. The LHCb experiment is ideally suited for the analysis of rare decays due to the large cross-section for bbbar production at the LHC, as well as its high trigger efficiency and excellent tracking and particle identification capabilities. Recent results from the LHCb experiment in the area of semileptonic and radiative b->s transitions are presented and their interpretation is discussed.
Experimental Collaboration LHCb
Presenter: MARIN BENITO, Carla (University of Barcelona (ES)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 486 EPS-HEP 2017 / Report of Contributions LHC results on FCNC beauty decays
Contribution ID: 616 Type: Parallel Talk
LHC results on FCNC beauty decays Thursday, 6 July 2017 09:30 (30 minutes)
Rare b-hadron decays, which proceed via flavour changing neutral current (FCNC) transitions, provide a powerful test of the Standard Model of particle physics. I will present a short review of recent results on rare FCNC transitions from the LHC experiments, and will discuss some inter- esting tensions that have started to appear between experimental measurements and the Standard Model predictions. I will also highlight areas where theoretical progress is needed to keep pace with increasing experimental precision.
Experimental Collaboration LHCb
Presenter: BLAKE, Thomas (University of Warwick) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 487 EPS-HEP 2017 / Report of Contributions Rare strange decays at LHCb
Contribution ID: 618 Type: Parallel Talk
Rare strange decays at LHCb Saturday, 8 July 2017 12:00 (15 minutes)
Rare decays are fundamental probes of physics beyond the Standard Model. The expanding LHCb program of strange physics, in particular of their rare decays, providesa unique and complementary probe to test the SM with respect to the beauty and charm sector. We present here the current status of rare decays studies at the LHCb experiment, including the new limit on the Ks -> mu mu branching fractions, and discuss a possible picture emerging from these measurements. In addition, prospects for strange physics with the LHCb Run 2 data and after the improvements in the trigger foreseen in the LHCb Upgrade are discussed.
Experimental Collaboration LHCb
Presenter: RAMOS PERNAS, Miguel (Universidade de Santiago de Compostela (ES)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 488 EPS-HEP 2017 / Report of Contributions Rare B decays at LHCb
Contribution ID: 619 Type: Parallel Talk
Rare B decays at LHCb Thursday, 6 July 2017 10:30 (15 minutes)
Rare decays are flavour changing neutral current processes that allow sensitive searches forphe- nomena beyond the Standard Model (SM). In the SM, rare decays are loop-suppressed and new particles in SM extensions can give significant contributions. The very rare decay Bs->mumu is in addition helicity suppressed and constitutes a powerful probe for new (pseudo) scalar particles. Of particular interest are furthermore tests of lepton universality in rare b->sll decays. The LHCb experiment is designed for the study of b-hadron decays and ideally suited fortheanal- ysis of rare decays due to its high trigger efficiency, as well as excellent tracking and particle identification performance. Recent results from the LHCb experiment in the area of rare decays are presented, including tests of lepton universality and searches for lepton flavour violation.
Experimental Collaboration LHCb
Presenter: PUIG NAVARRO, Albert (Universität Zürich (CH)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 489 EPS-HEP 2017 / Report of Contributions LHCb inputs to astroparticle physics
Contribution ID: 620 Type: Parallel Talk
LHCb inputs to astroparticle physics Thursday, 6 July 2017 09:18 (18 minutes)
The LHCb experiment has the unique possibility, among the LHC experiments, to be operated in fixed target mode, using its internal gas target SMOG. The excellent detector capabilities for vertexing, tracking and particle identification allow to measure exclusive particle production for collisions of protons on different nuclei at an energy scale of sqrt(sNN) ~ 100 GeV, providing valu- able inputs to the modelling of cosmic ray interactions in the atmosphere and in the cosmos. In particular, by operating SMOG with helium, LHCb performed the first measurement of antipro- ton production in proton-helium collisions. The results improve the accuracy of the prediction for secondary antiproton production incosmic rays at the energy scale accessible to space-borne detectors.
Experimental Collaboration LHCb
Presenter: FONTANA, Marianna (Universita e INFN, Cagliari (IT)) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 490 EPS-HEP 2017 / Report of Contributions Time-dependent measurements of …
Contribution ID: 621 Type: Parallel Talk
Time-dependent measurements of the CKM angle gamma at LHCb Thursday, 6 July 2017 17:15 (15 minutes)
The CKM angle gamma is the least well-known angle of the unitarity triangle, and theonlyone easily accessible at tree level. Important constraints on gamma are obtained from time depen- dent analysis of flavour-tagged Bs -> Ds K decays, and the latest results using the full LHCbRun1 dataset are presented here. The ultimate goal of degree level precision for gamma requires exploita- tion of all possible channels and techniques, and the results of related time-dependent analyses of B meson decays with gamma sensitivity, B->Dpi and B->Ds*K, will be presented.
Experimental Collaboration LHCb
Presenter: HILL, Donal (University of Oxford (GB)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 491 EPS-HEP 2017 / Report of Contributions LHC results on tree-level beauty d …
Contribution ID: 624 Type: Parallel Talk
LHC results on tree-level beauty decays Thursday, 6 July 2017 15:15 (30 minutes)
LHC results on tree-level beauty decays Tree-level beauty decays present crucial ingredients in the search for physics beyond the SM through quark flavour changing transitions. This contribution covers recent LHC results in charged-current semileptonic decays and beauty decays to both charmed and charmless fully hadronic final states. The semileptonic decays must be studied to determine the parameters |Vub| and |Vcb| inorderto over-constrain the Unitary Triangle. First studies with semileptonic beauty baryons, which are uniquely accessible at hadron colliders, are presented. Semitaunonic decays provide an opportunity to test for physics that couples differently among the leptonic families, and recent results in this area are presented. Tree level decays to hadronic final states provide complementary constraints on the parameters of the Unitarity Triangle, in particular the internal angle gamma, which is currently the least pre- cisely determined. Several recent results on beauty decays to charmed and charmless final states are presented, in- cluding their combined impact on the determination of the angle gamma.
Experimental Collaboration LHCb
Presenter: VESTERINEN, Mika Anton (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 492 EPS-HEP 2017 / Report of Contributions Recent results from LHCb on semi …
Contribution ID: 625 Type: Parallel Talk
Recent results from LHCb on semileptonic decays of b-hadrons Thursday, 6 July 2017 16:45 (15 minutes)
Due to their large branching fractions and good theoretical uncertainties, semileptonic b-hadron decays are excellent tools to study the CKM matrix and b-hadron properties such as lifetimes. The LHCb experiment has a very good potential for studies of semi-leptonic decays of b-hadrons, due to its excellent muon identification capabilities and very good reconstruction of decay vertices. In this contribution, recent results on semileptonic decays of b-hadrons at LHCb are presented.
Experimental Collaboration LHCb
Presenter: BOZZI, Concezio (CERN and INFN Ferrara) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 493 EPS-HEP 2017 / Report of Contributions Search for long-lived scalar particl …
Contribution ID: 627 Type: Parallel Talk
Search for long-lived scalar particles in B decays at LHCb Thursday, 6 July 2017 15:30 (15 minutes)
The presence of dark matter is known from cosmological observations yet it has so farescaped direct detection. As a consequence there has been renewed interet in hidden-sector models that predict new particles that are singlets with respect to the Standard Model (SM) gauge bosons and thus interact very weakly with the Standard Model particles. The LHCb experiment allows to search for these dark-sector particles in the GeV mass rangeus- ing rare B meson decays, thanks to its low trigger thresholds, and excellent tracking and particle identification performance. Recent results from LHCb on searches for dark-sector particles are presented.
Experimental Collaboration LHCb
Primary author: GERSABECK, Marco (University of Manchester (GB)) Presenter: MAURI, Andrea (Zurich University) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 494 EPS-HEP 2017 / Report of Contributions The LHCb Starterkit initiative
Contribution ID: 628 Type: Parallel Talk
The LHCb Starterkit initiative Friday, 7 July 2017 15:45 (15 minutes)
The vast majority of high-energy physicists use and produce software every day. Software skills are usually acquired “on the go” and dedicated training courses are rare. The LHCb Starterkit isa new training format for getting LHCb collaborators started in effectively using software toperform their research. The initiative, combining courses and online tutorials, focuses on teaching basic skills for research computing, as well as LHCb software specifics. Unlike traditional tutorials we focus on starting with basics, performing all the material live, with a high degree of interactivity, giving priority to understanding the tools as opposed to handing out recipes that work “as if by magic”. The LHCb Starterkit was started by two young members of the collaboration inspired by the principles of Software Carpentry, and the material is created in a collaborative fashion using the tools we teach. Three successful entry-level workshops, as well as two advance ones,have taken place since the start of the initiative in 2015, and were taught largely by PhD students to other PhD students.
Experimental Collaboration LHCb
Presenter: PUIG NAVARRO, Albert (Universität Zürich (CH)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 495 EPS-HEP 2017 / Report of Contributions Hidden and open heavy flavour pr …
Contribution ID: 629 Type: Parallel Talk
Hidden and open heavy flavour production at LHCb Thursday, 6 July 2017 12:15 (15 minutes)
Heavy flavour production measurements in proton-proton collisions are important tests ofQCD. We report on updated production cross-section measurement of quarkonia, open-charm, and open- beauty states. Other aspects related to the quarkonium production mechanisms, such as the asso- ciative production of quarkonium and jets, will be discussed.
Experimental Collaboration LHCb
Presenter: USACHOV, Andrii (Universite de Paris-Sud 11 (FR)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 496 EPS-HEP 2017 / Report of Contributions The upgrade of the LHCb trigger f…
Contribution ID: 634 Type: Parallel Talk
The upgrade of the LHCb trigger for Run III Saturday, 8 July 2017 10:30 (15 minutes)
The LHCb detector at the LHC is a general purpose detector in the forward region withafocus on reconstructing decays of c- and b-hadrons. For Run III (2021 onwards) of the LHC, LHCb will take data at an instantaneous luminosity of 2 × 10^{33} cm−2 s−1, five times higher than in Run II (2015-2018). To cope with the harsher data taking conditions, the LHCb collaboration will up- grade the DAQ system and install a purely software based trigger, in addition to various detector upgrades, to process the 30MHz of inelastic collisions delivered by the LHC. A new trigger strategy with real-time reconstruction, alignment and calibration will be employed. We demonstrate how the modified detector infrastructure will be able to face this challenge and discuss the necessary changes to the reconstruction sequence, with particular attention to the performance and execu- tion time budget. We present a novel strategy to distribute and maximise the bandwidth among the different physics channels using a genetic algorithm. This maximises the efficiency foruseful physics events.
Experimental Collaboration LHCb
Primary author: WHITEHEAD, Mark Peter (CERN) Presenter: WHITEHEAD, Mark Peter (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 497 EPS-HEP 2017 / Report of Contributions Performance and recent developm …
Contribution ID: 635 Type: Parallel Talk
Performance and recent developments of the real-time track reconstruction and alignment of the LHCb detector. Thursday, 6 July 2017 10:15 (15 minutes)
The LHCb detector is a single-arm forward spectrometer, which has been designed for the efficient reconstruction decays of c- and b-hadrons. During the 2013-2015 long shut-down LHCb has intro- duced a novel real-time detector alignment and calibration strategy for LHC Run II. Data collected at the start of the fill are processed in a few minutes and used to update the alignment, whilethe calibration constants are evaluated for each run. This procedure permits to obtain the same quality of the processed events in the trigger system as in the offline reconstruction. In addition, the larger timing budget available allows to process the events using the best performing reconstruction in the trigger, which fully includes the particle identification selection criteria. This approach greatly increases the efficiency, in particular for the selection of charm and strange hadron decays. In this talk the basics of the approach are discussed, followed by presentation of the recent develop- ments implemented for the 2017 run of data taking. The topic is discussed in terms of operational performance and reconstruction quality.
Experimental Collaboration LHCb
Primary author: DZIURDA, Agnieszka (CERN) Presenter: DZIURDA, Agnieszka (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 498 EPS-HEP 2017 / Report of Contributions Real-time analysis from the trigger …
Contribution ID: 636 Type: Parallel Talk
Real-time analysis from the trigger candidates and novel calibration strategy at the LHCb experiment Thursday, 6 July 2017 17:00 (15 minutes)
The availability of computing resources is a limiting factor in data collection at the LHCb experi- ment, due to the high production rate of beauty and charm hadrons. For Run 2, LHCb has imple- mented a novel approach to make optimal use of these resources: The output of the first software trigger stage is buffered to disk and the second stage is executed asynchronously, using 100%of the available trigger farm even between LHC fills. As an integral part of the new strategy, the detector is aligned and calibrated, and the data are fully reconstructed, in real-time, permitting offline-quality signal selections. Without the need to reconstruct offline, it is possible tosave only the information needed for analysis directly from the trigger. This concept, called the “LHCb Turbo stream”, maximises the signal rate saved to disk. The analysis of the data collected also required appropriate calibration samples to determine the tracking and PID performance. A novel strategy has been introduced in Run 2, where the selection of calibration samples is implemented as a Turbo stream. A further processing of the data is required in order to provide background subtracted samples for the determination of performance, which is achieved through a centralised production that makes highly efficient use of computing resources. These data are also usedinthe development of new algorithms to evaluate the detector performance in LHC upgrade scenarios. The aim of this talk is twofold. It will cover the major steps of the implementation, anddetailthe use of the calibration samples to determine the PID performance and tracking efficiency. It will also present how LHCb dynamically adapts the output rate of the first trigger stage to the LHC efficiency, and how the Turbo paradigm was extended in 2017 to dynamically persist anyinforma- tion required for analysis. This can range from only the signal candidate object to the complete event, with user-selectable granularity.
Experimental Collaboration LHCb
Primary author: GAZZONI, Giulio (Univ. Blaise Pascal Clermont-Fe. II (FR)) Presenter: GAZZONI, Giulio (Univ. Blaise Pascal Clermont-Fe. II (FR)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 499 EPS-HEP 2017 / Report of Contributions Early Career, Gender & Diversity …
Contribution ID: 638 Type: Parallel Talk
Early Career, Gender & Diversity Office at the LHCb experiment Friday, 7 July 2017 16:45 (15 minutes)
The LHCb Collaboration created an office with a mandate to advise and assist on issues relatedto Early Career, Gender & Diversity (ECGD) in September 2014. This includes several activities within the Collaboration:
• Helping early-career physicists succeed, both in Academia and outside HEP; e.g. setting up a mentoring programme within the collaboration, and organizing meetings with external speakers both within the collaboration and in conjunction with other experiments. • Collating annual statistics on the gender balance in the collaboration as a whole and in management roles, and presenting them to the collaboration. • Helping inform the collaboration about topics related to ECGD, including organising meet- ings within the collaboration and advertising related activities that are ongoing outside the collaboration. • Listening to and advising colleagues who feel that they are the victims of harassment, dis- crimination, or other inappropriate behaviour.
This talk will present the activities and the experience of this office during the lastfewyears.
Experimental Collaboration LHCb
Presenter: STEINKAMP, Olaf (Universitaet Zuerich (CH)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 500 EPS-HEP 2017 / Report of Contributions Sensitivity to anomalous VVH cou …
Contribution ID: 639 Type: Parallel Talk
Sensitivity to anomalous VVH couplings at the ILC Thursday, 6 July 2017 18:15 (15 minutes)
The discovery of the 125 GeV Higgs boson, which was the last missing element of the standard model (SM), provided us the insight that the electroweak symmetry breaking is done by a Higgs condensate in the vacuum, namely the Higgs mechanism. However the SM does not give the dynamics explaining why and how that Higgs condensate is formed. On the other hand, the SM can not provide candidate particles for the dark matter, and can not explain the baryon number asymmetry in our universe, etc.. Therefore new physics beyond the SM is needed to answer all of those questions. Remarkably the effects of new physics will be inevitably imprinted inthe properties of the Higgs boson, namely its couplings to other SM particles and its CP nature. At the future International Linear Collider (ILC), one of the most important goals is precise measurement those properties.
In this talk, we will focus on the measurement of the general Lorentz structure of couplings be- tween Higgs and vector bosons (VVH, V=Z or W) at the ILC, based on an approach of the effective field theory. The sensitivities to both CP-even and CP-odd dimension-5 operators are evaluated by exploring various Higgs production and decay channels, in particular taking advantage of the sensitivities from differential cross sections measurements. The studies are performed basedon full detector simulation of the International Large Detector (ILD), for ECM = 250 GeV and 500 GeV. Combined sensitivities are given for some realistic running scenarios of the ILC.
Experimental Collaboration
Primary author: Mr OGAWA, Tomohisa (The Graduate University for Advanced Studies) Co-authors: Dr FUJII, Keisuke (High Energy Accelerator Research Organization); Dr TIAN, Junping (International Center for Elementary Particle Physics); Ms AOKI, Yumi (The Graduate University for Advanced Studies)
Presenter: Mr OGAWA, Tomohisa (The Graduate University for Advanced Studies) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 501 EPS-HEP 2017 / Report of Contributions Polarization effects in the reaction …
Contribution ID: 640 Type: Poster Presentation
Polarization effects in the reactions p + 3He → π+ + 4He, π+ + 4He → p + 3He and quantum character of spin correlations in the final (p, 3He) system
The general consequences of T invariance for the direct and inverse binary reactions a + b → c + d , c + d → a + b with spin-1/2 particles a, b and unpolarized particles c, d are analyzed. Using the formalism of helicity amplitudes, the theoretical study of polarization effects in the reaction p + 3He → π+ + 4He and in the inverse process π+ + 4He → p + 3He is performed. It is shown that in the reaction π+ + 4He → p + 3He the spins of the final proton and 3He nucleus are strongly correlated. A structural expression through helicity amplitudes, corresponding to arbitrary emission angles, is obtained for the correlation tensor. It is established that in the reaction π+ + 4He → p + 3He one of the “classical” incoherence inequalities of the Bell type for diagonal components of the correlation tensor is necessarily violated and, thus, the spin correla- tions in the final system (p, 3He) have the strongly pronounced quantum character.
Experimental Collaboration
Primary authors: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ); Dr LYUBOSHITZ, Vladimir (Joint Institute for Nuclear Research, Dubna)
Presenter: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 502 EPS-HEP 2017 / Report of Contributions New results from RENO
Contribution ID: 641 Type: Parallel Talk
New results from RENO Thursday, 6 July 2017 10:30 (15 minutes)
The Reactor Experiment for Neutrino Oscillation (RENO) started data-taking from August, 2011 and has sucdessfully measured the smallest neutrino mixing angle θ_13 in 2012 using 220 days of data by observing the disappearance of reactor antineutrinos. Antineutrinos from the six reactors at Hanbit Nuclear Power Plant in Korea are detected and compared by the two identical detectors located in the near and far distances from the reactor array center. In 2016, RENO has published an updated value of θ_13 and its first measurement of dm^2_ee based on energy dependent disappear- ance probability using 500 days of data. As of today, RENO has accumulated roughly 2000 days of data. In this talk, we present precise measurement of θ_13 and dm^2_ee using more data and improved systematic uncertainties. In addition, the recent results on the absolute reactor antneu- trino flux, the 5 MeV excess of reactor neutrino spectrum, and the search for sterile neutrinos will be reported.
Experimental Collaboration RENO
Primary author: Dr SEO, Hyunkwan (Seoul National University) Presenter: Dr SEO, Hyunkwan (Seoul National University) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 503 EPS-HEP 2017 / Report of Contributions Recent results from kaon physics
Contribution ID: 643 Type: Parallel Talk
Recent results from kaon physics Saturday, 8 July 2017 09:30 (30 minutes)
K->pinunu is one of the theoretically cleanest meson decay where to look for indirect effects of new physics complementary to LHC searches. The NA62 experiment at CERN SPS is designed to measure the branching ratio of the K+->pi+nunu decay with 10% precision. NA62 took data in 2015 and 2016 reaching the Standard Model sensitivity. The KOTO experiment in Japan is investi- gating the decay K0->pi0 nunu reaching a higher background suppression.Both experiments will be reviewed, and recent results and prospects will be presented.
Experimental Collaboration Kaon physics
Presenter: RUGGIERO, Giuseppe (University of Liverpool (GB)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 504 EPS-HEP 2017 / Report of Contributions Particle Physics for Primary Schoo …
Contribution ID: 644 Type: Parallel Talk
Particle Physics for Primary Schools – enthusing future Physicists Saturday, 8 July 2017 11:45 (15 minutes)
In recent times the realisation that children make decisions and choices about subjects they like during their primary school years became widely understood. For this reason academic establish- ments focus many of their outreach activities towards the younger ages. During the last academic year we designed and trialled a particle physics workshop for primary schools. The workshop al- lows young children (ages 8-11) to learn the world of particles, use creative design to make particle models and engage in creative writing to describe how particles interact with each other. The work- shop has been trialled in many local primary schools, receiving positive evaluation. The resources were improved and completed, based on the feedback given by the primary school teachers.
Experimental Collaboration
Presenters: PAVLIDOU, Maria (University of Birmingham); Dr PAVLIDOU, Maria Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 505 EPS-HEP 2017 / Report of Contributions HiSPARC-UK
Contribution ID: 645 Type: Poster Presentation
HiSPARC-UK
HiSPARC (see http://www.hisparc.nl/en/) involves schools across Europe in real scientific research, and won the European Physical Society HEP outreach prize in 2007. It was born more than a decade ago in the Netherlands, with ongoing participation of over 100 schools. Relatively recently, HiS- PARC has been introduced to UK, with a network of schools forming mainly in the Midlands/South West. HiSPARC-UK began in the Bristol area in early 2011, as part of the cosmic ray centenary, and attracted support from the South-West HE-STEM programme, AWE, the IoP and the University of Bristol. The project expanded to the Birmingham area in 2014 with support from the University of Birmingham and the Odgen Trust. In 2016 the network expanded to Wales (Cardiff & Swansea), with a grant from the Welsh Assembly. The UK network has thus increased rapidly and currently has 25 schools (15 in the South-West in and around Bristol, 7 in Birmingham, and 2 in Wales and 1 in East Sussex). So far, each school is provided with components for a rooftop, research-quality, cosmic ray detector (costing £5k). This comprises a pair of scintillators and phototubes, andan Internet-connected ADC / GPS unit that uploads data to a central database. Schools first construct the apparatus, and then operate and maintain it over several years, therefore gaining valuable knowledge of particle physics detector techniques and methods, and exploiting our academic re- search links to CERN (Birmingham, Bristol, Sussex) and our long-standing expertise in detectors and particle/astroparticle research.
Experimental Collaboration
Presenter: PAVLIDOU, Maria Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 506 EPS-HEP 2017 / Report of Contributions Neutrino CP Violation with the ES …
Contribution ID: 646 Type: Parallel Talk
Neutrino CP Violation with the ESSnuSB project Thursday, 6 July 2017 16:30 (15 minutes)
After measuring in 2012 a relatively large value of the neutrino mixing angle θ13, the doorisnow open to observe for the first time a possible CP violation in the leptonic sector. The measured value of θ13 also privileges the 2nd oscillation maximum for the discovery of CP violation instead of the usually used 1st oscillation maximum. The sensitivity at this 2nd oscillation maximum is about three times higher than for the 1st oscillation maximum inducing a lower influence of systematic errors. Going to the 2nd oscillation maximum necessitates a very intense neutrino beam with the appropriate energy. The world’s most intense pulsed spallation neutron source, the European Spallation Source, will have a proton linac with 5 MW power and 2 GeV energy. This linac, under construction, also has the potential to become the proton driver of theworld’s most intense neutrino beam with very high potential to discover a neutrino CP violation. The physics performance of that neutrino Super Beam in conjunction with a megaton underground Water Cherenkov neutrino detector installed at a distance of about 500 km from ESS has been evaluated. In addition, the choice of such detector will extent the physics program to proton–decay, atmospheric neutrinos and astrophysics searches. The ESS proton linac upgrades, the accumulator ring needed for proton pulse compression, the target station optimization and the physics potential are described. In addition to neutrinos, this facility will also produce at the same time a copious number of muons which could be used by a low energy nuSTORM facility, a future neutrino factory or a muon collider. The ESS neutron facility will be fully ready by 2023 at which moment the upgrades for the neutrino facility could start. This project supported by the COST Action CA15139 “Combining forces for a novel European facility for neutrino-antineutrino symmetry-violation discovery” (EuroNuNet).
Experimental Collaboration
Primary author: DRACOS, Marcos (Institut Pluridisciplinaire Hubert Curien (FR)) Co-author: EKELOF, Tord Johan Carl (Uppsala University (SE)) Presenter: DRACOS, Marcos (Institut Pluridisciplinaire Hubert Curien (FR)) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 507 EPS-HEP 2017 / Report of Contributions Four-dimensional regularization o …
Contribution ID: 647 Type: Parallel Talk
Four-dimensional regularization of higher-order computations: FDU approach Saturday, 8 July 2017 09:40 (20 minutes)
We have recently proposed a new regularization framework based on the loop-tree duality theo- rem. This theorem allows to rewrite loop level amplitudes in terms of tree-level like structures and phase-space integrations. In consequence, it is possible to combine naturally real and virtual con- tributions at integrand level. Moreover, by introducing a proper momentum mapping, a complete local cancellation of infrared singularities is achieved, by-passing the necessity of counter-terms. In this talk, we explain the implementation of this novel approach to compute some physical pro- cesses, and we show how to deal with both infrared and ultraviolet divergences without using DREG.
Experimental Collaboration
Primary authors: DRIENCOURT-MANGIN, Felix (IFIC Valencia); RODRIGO, German (IFIC CSIC-UV); SBOR- LINI, German (Università di Milano, INFN Sezione Milano and IFIC-Valencia)
Presenter: SBORLINI, German (Università di Milano, INFN Sezione Milano and IFIC-Valencia)
Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 508 EPS-HEP 2017 / Report of Contributions On the universal structure of Higg …
Contribution ID: 648 Type: Poster Presentation
On the universal structure of Higgs amplitudes mediated by heavy particles
Recently, there was a controversy about the calculation of loop corrections to H → γγ and gg → H, which are very relevant decay and production channels for the Higgs boson at the LHC. The fact that these corrections are both IR and UV finite is not enough to perform the calculation without a proper regularization of the intermediate steps. In this talk, we apply the four-dimensional unsubtraction (FDU) approach to obtain well-defined expressions, which unambiguously lead to the proper results. Moreover, this method allows us to obtain very compact expressions which share the same functional structure independently of the particles circulating the loop.
Experimental Collaboration
Primary authors: DRIENCOURT-MANGIN, Felix (IFIC Valencia); RODRIGO, German (IFIC CSIC-UV); SBOR- LINI, German (IFIC-Valencia)
Presenter: SBORLINI, German (IFIC-Valencia) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 509 EPS-HEP 2017 / Report of Contributions Higher-order QED effects in hadro …
Contribution ID: 649 Type: Parallel Talk
Higher-order QED effects in hadronic processes Thursday, 6 July 2017 17:00 (15 minutes)
In this talk, we describe the computation of higher-order QED effects relevant in hadronic col- lisions. In particular, we discuss the calculation of mixed QCD-QED one-loop contributions to the Altarelli-Parisi splittings functions, as well as the pure two-loop QED corrections. We explain how to extend the DGLAP equations to deal with new parton distributions, emphasizing the conse- quences of the novel corrections in the determination (and evolution) of the photon distributions.
Experimental Collaboration
Primary authors: CIERI, Leandro (INFN); FERRERA, Giancarlo (University of Milan); SBORLINI, German (IFIC-Valencia)
Presenter: SBORLINI, German (IFIC-Valencia) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 510 EPS-HEP 2017 / Report of Contributions Running of the Charm-Quark Mas …
Contribution ID: 650 Type: Parallel Talk
Running of the Charm-Quark Mass from HERA Deep-Inelastic Scattering Data Friday, 7 July 2017 12:22 (13 minutes)
Combined HERA data on charm production in deep-inelastic scattering have previously been used to determine the charm-quark running mass mc(mc) in the MSbar renormalisation scheme. Here, the same data are used as a function of the photon virtuality Q2 to evaluate the charm-quark running mass at different scales to one-loop order, in the context of a next-to-leading order QCD analysis. The scale dependence of the mass is found to be consistent withQCD expectations.
Experimental Collaboration
Primary authors: GIZHKO, Andrii (DESY); GEISER, Achim (DESY); MOCH, S. (UHH) Presenters: GIZHKO, Andrii (DESY); GIZHKO, Andrii (Deutsches Elektronen-Synchrotron (DE)); GIZHKO, Andrii (D) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 511 EPS-HEP 2017 / Report of Contributions A continuous read-out TPC for the …
Contribution ID: 651 Type: Parallel Talk
A continuous read-out TPC for the ALICE upgrade Saturday, 8 July 2017 10:00 (15 minutes)
The largest gaseous Time Projection Chamber (TPC) in the world, the ALICE TPC, will be upgraded based on Micro Pattern Gas Detector technology during the second long shutdown of theCERN Large Hadron Collider in 2019/20. The upgraded detector will operate continuously without the use of a triggered gating grid. It will thus be able to record all minimum bias Pb-Pb collisions that the LHC will deliver at the anticipated peak interaction rate of 50 kHz for the high luminosity heavy-ion era. New read-out electronics will send a continuous stream of data to a new online farm at a rate of 3 TByte/s. To keep distortions due to space charge from back-drifting ions at a tolerable level, an ion feedback of below 1 % is required. The new read-out chambers will consist of stacks of 4 GEM foils combining different hole pitches. In addition to a low ion backflow, other key requirements such asenergy resolution and operational stability have to be met. A careful optimisation of the performance in terms of all these parameters was achieved during an extensive R&D program. A working point well within the design specifications was identified, with an ion backflow of 0.7 %, a local energy resolution of 12 % (sigma) and a discharge probability for irradiation with alpha particles of the order of 10^-10.
The project has now entered the production phase. The status of the various activities andresults from testing GEM foils, first chambers and readout electronics will be presented.
Experimental Collaboration ALICE
Primary author: LIPPMANN, Christian (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
Presenter: LIPPMANN, Christian (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 512 EPS-HEP 2017 / Report of Contributions No dependence of coupling consta …
Contribution ID: 652 Type: Poster Presentation
No dependence of coupling constants f F , f D, f S in vector-meson-1/2+ octet baryon interaction Lagrangian on the choice of the ω − ϕ mixing configuration.
We demonstrate explicitly that the f F , f D, f S coupling constants in the SU(3) invariant interac- tion Lagrangian of the vector-mesons with 1/2+ octet baryons does not depend on the choice of the ω − ϕ mixing configuration.
Experimental Collaboration
Primary authors: ADAMUSCIN, Cyril (Slovak Academy of Sciences (SK)); BARTOS, Erik (Institute of Physics of the Slovak Academy of Sciences); DUBNICKA, Stanislav (Institute of Physics); Prof. DUBNICKOVA, Anna Zuzana (Dept.of Theor.Physics, Comenius University)
Presenter: ADAMUSCIN, Cyril (Slovak Academy of Sciences (SK)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 513 EPS-HEP 2017 / Report of Contributions Status and commissioning of the K …
Contribution ID: 653 Type: Parallel Talk
Status and commissioning of the KATRIN experiment Friday, 7 July 2017 15:15 (15 minutes)
The goal of the KArlsruhe TRItium Neutrino experiment (KATRIN) is to investigate the neutrino mass with a sensitivity of 0.2 eV/c2 by a high-resolution and high-statistics measurement of the end-point region of the 3H β-spectrum. The β-electrons start in the windowless gaseous tritium source and go into a differential and a cryogenic pumping section. These components magneti- cally guide the β-electrons, while reducing the 3H flow to a negligible level. The energy ofthe β-electrons is then analyzed by two electrostatic spectrometers based on the MAC-E filter tech- nique and detected by a multi-pixel silicon semiconductor detector. At the experimental site at the Karlsruhe Institute of Technology (KIT), all major components have arrived by summer 2015 and the complete beam line has been assembled. The inauguration of the full beam line, the “FirstLight”, took place in October 2016 and was followed by a “FirstLight+” commissioning campaign, that finished in December 2016.
This talk gives an overview of the current status of the KATRIN experiment, the recent “First- Light+” campaign and the upcoming steps towards the first tritium measurements planned for the beginning of 2018.
Experimental Collaboration KATRIN
Primary author: RANITZSCH, Philipp (Universitaet Muenster) Presenter: RANITZSCH, Philipp (Universitaet Muenster) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 514 EPS-HEP 2017 / Report of Contributions Top-quark mass determination at L …
Contribution ID: 654 Type: Parallel Talk
Top-quark mass determination at LHC: a theory overview Friday, 7 July 2017 14:30 (30 minutes)
I will discuss the top-quark mass determination at the LHC, according to the different methods used by the experimental collaborations. In particular, I will investigate the theoretical uncertainty on the measured mass, once interpreted in terms of the top-quark pole mass, taking particular care about non-perturbative corrections due to bottom fragmentation in top decays.
Experimental Collaboration
Primary author: CORCELLA, Gennaro (INFN - LNF) Presenter: CORCELLA, Gennaro (INFN - LNF) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 515 EPS-HEP 2017 / Report of Contributions The Large Hadron-Electron Collid …
Contribution ID: 655 Type: Poster Presentation
The Large Hadron-Electron Collider (LHeC) Development
The LHeC is the prime candidate for future electron-hadron (proton and ion) collisions atthe energy frontier. This talk presents recent developments on its design as both a most precise QCD machine and a high-luminosity Higgs and BSM physics facility, including new results on beam- beam and interaction region studies, on the detector design and a brief overview of its physics program. The LHeC is based on an energy recovery linac (ERL) which is planned to bedeveloped through a high current, multi-turn ERL test facility (PERLE) at LAL Orsay, and which also serves as the default baseline for the Future Circular Collider in electron-hadron mode, the FCC-eh, which will be described too.
Experimental Collaboration
Primary author: ARMESTO PEREZ, Nestor (Universidade de Santiago de Compostela (ES)) Presenter: SCHULTE, Daniel (CERN) Session Classification: Poster session
Track Classification: Accelerators for HEP
October 6, 2021 Page 516 EPS-HEP 2017 / Report of Contributions Charm meson physics at BESIII
Contribution ID: 656 Type: Parallel Talk
Charm meson physics at BESIII Friday, 7 July 2017 15:30 (30 minutes)
The BESIII Experiment at the Beijing Electron Positron Collider (BEPCII) accumulated the world’s largest e+e- collision samples at Ecm = 3.773, 4.009, 4.18 GeV. Based on analyses of D(s)+ to l+v (l=mu, tau), D -> K(pi)l+v (l=e or mu), D+ -> K-pi+e+v, D0(+) -> f0(980)e+v, Ds+ -> eta(’)e+v, we report the determinations of CKM matrix elements |Vcs(d)|,the D(s)+ decay constants, the form factors of D semi-leptonic decays. These are important to calibrate the LQCD calculations of decay constant and form factors and to test the CKM unitarity. Using the quantum correlation property of D0D0-bar production, we determine the parameters of the strong phase difference and D0D0-bar mixing. We will also report some preliminary results for Ds+ decays to omega pi+,omega K+ and pn.
Experimental Collaboration BESIII
Primary author: CHEN, Jiangchuan (IHEP, P.R. China) Presenter: CHEN, Jiangchuan (IHEP, P.R. China) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 517 EPS-HEP 2017 / Report of Contributions Light meson spectroscopy at BESIII
Contribution ID: 658 Type: Parallel Talk
Light meson spectroscopy at BESIII Saturday, 8 July 2017 09:30 (15 minutes)
The unambiguous identification and systematic study of bound states beyond the constituent quark degrees of freedom, e.g., multiquark states or states with gluonic degrees of freedom (hybrids, glue- balls) would provide validation of and valuable input to the quantitative understanding of QCD. Hadron spectroscopy is one of the most important physics goals of BESIII. Since 2009, BESIII has collected 1.3 10^8 J/psi and 0.410^8 of psi’, which are the world’s largest data samples of J/psi and psi’ from e+e- collision. Radiative decays of charmonium provide a gluon-rich environment and are therefore regarded as one of the most promising hunting grounds for gluonic excitations. Sig- nificant progresses in the light-quark sector have been made with the unprecedented high statistics data sets. Several recent results on light hadron spectroscopy and light hadron decays will be re- ported, including: 1, the observation of the anomalous line shape of X(1835) near pp mass threshold and related stud- ies; 2, studies of glueballs in J/psi radiative decays; 3, search for 1- + exotic in chi_c1->eta pi pi.
Experimental Collaboration BESIII
Presenter: DE MORI, Francesca (INFN - National Institute for Nuclear Physics) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 518 EPS-HEP 2017 / Report of Contributions Determination of proton parton de …
Contribution ID: 659 Type: Poster Presentation
Determination of proton parton densities and αs at the LHeC and the FCC-eh
The Large Hadron-electron Collider LHeC and the Future Circular Collider in electron-hadron mode FCC-eh will provide electron-proton collisions with center-of-mass energies in the range 1.3-3.5 TeV and instantaneous luminosities larger than 1034 cm−2s−1. In this talk, we present new results on the precise determination of proton parton densities at both small and large x in these machines. We will also discuss the possibilities that the study of both NC and CC processes offer for a complete flavour decomposition of parton densities in the proton for the first time. Finally, we will analyse the new results of the per mille determination of the strong coupling constant that could be achievable from the measurement of scaling violations, together with those offered by jet studies.
Experimental Collaboration
Primary author: ARMESTO PEREZ, Nestor (Universidade de Santiago de Compostela (ES)) Presenter: GIULI, Francesco (University of Oxford (GB)) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 519 EPS-HEP 2017 / Report of Contributions Higgs Physics at the LHeC and the …
Contribution ID: 660 Type: Parallel Talk
Higgs Physics at the LHeC and the FCC-eh Friday, 7 July 2017 15:45 (15 minutes)
The Large Hadron-electron Collider LHeC and the Future Circular Collider in electron-hadron mode FCC-eh will provide electron-proton collisions with center-of-mass energies in the range 1.3-3.5 TeV and instantaneous luminosities larger than 1034 cm−2s−1. With integrated luminosi- ties of about 1 ab−1, they provide large samples of Standard Model Higgs bosons in both neutral and charged current reactions. In this talk, we present new results of both cut- and BDT-based extractions of the couplings to b¯b and cc¯ based on a Delphes simulation of the detector. We will show how precisions 0.5 and 4 % respectively are possible at the LHeC, and present the correspond- ing projections for the FCC-eh. The status of the complete Higgs SM ep simulation program will be described, including also ττ and WW decays. We also comment on the impact of the reduced uncertainties in proton parton densities and αs that can be achieved through ep for Higgs physics at the HL-LHC (pp).
Experimental Collaboration LHeC Study Group
Primary author: ARMESTO PEREZ, Nestor (Universidade de Santiago de Compostela (ES)) Presenter: Dr WANG, Kechen (DESY / IHEP) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 520 EPS-HEP 2017 / Report of Contributions BSM physics at energy-frontier …
Contribution ID: 661 Type: Parallel Talk
BSM physics at energy-frontier lepton-hadron colliders Friday, 7 July 2017 12:45 (15 minutes)
The Large Hadron-electron Collider LHeC and the Future Circular Collider in electron-hadron mode FCC-eh will provide electron-proton collisions with center-of-mass energies in the range 1.3- 3.5 TeV and instantaneous luminosities larger than 1034 cm−2s−1. An overview is given and new results are presented on a variety of possible discovery channels such as exotic Higgs, RPV SUSY, sterile and right-handed neutrinos, and others. We also comment on the impact of the reduced uncertainties in proton parton densities and αs that can be achieved through ep for searches for new physics at the HL-LHC (pp).
Experimental Collaboration LHeC Study Group
Primary author: ARMESTO PEREZ, Nestor (Universidade de Santiago de Compostela (ES)) Presenter: WANG, Kechen (DESY / IHEP) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 521 EPS-HEP 2017 / Report of Contributions Top and EW physics at the LHeC …
Contribution ID: 662 Type: Parallel Talk
Top and EW physics at the LHeC and the FCC-eh Saturday, 8 July 2017 12:30 (15 minutes)
The Large Hadron-electron Collider LHeC and the Future Circular Collider in electron-hadron mode FCC-eh will provide electron-proton collisions with center-of-mass energies in the range 1.3- 3.5 TeV and instantaneous luminosities larger than 1034 cm−2s−1. The talk presents an overview on novel and unique top physics through single and pair production in ep collisions, including prospects for measurements of top quantum numbers, anomalous and CKM couplings, as well as prospects to measure the parton momentum fraction carried by the top when the proton is probed at very high momenta. We also show results on top+Higgs production. Finally, new results on the determination of EW parameters through a combined NC+CC fit of inclusive DIS data are presented.
Experimental Collaboration
Primary author: SCHWANENBERGER,Christian (Deutsches Elektronen-Synchrotron (DE)) Presenter: SCHWANENBERGER, Christian (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 522 EPS-HEP 2017 / Report of Contributions Systematic study of innovative hy …
Contribution ID: 663 Type: Poster Presentation
Systematic study of innovative hygroscopic and non-hygroscopic crystals with SiPM array readout
LaBr3:Ce crystals and later CeBr3, PrLuAG and Ce:CAAG have been introduced for radiation imag- ing in medical physics, with photomultiplier or single SiPM readout (up to 3x3 mm2). An R&D was pursued with different types of crystals to realize compact large area detectors (up tosome cm2) with SiPM array readout, aiming at high light yields, good energy resolution, good detector linearity and fast time response for low-energy X-rays. A natural application was found inside the FAMU project at RIKEN-RAL muon facility, that aims at a precise measure of the proton Zemach radius to solve the so-called ‘’proton radius”, triggered by the recent measure of the proton charge radius at PSI. For this, the goal is the detection of characteristic X-rays around 130 KeV. Other applications may be foreseen in medical physics, such as PET, and gamma-ray astronomy. For our aims, it is essential to detect X-rays in the range 100-700 KeV with a compact detector. Different types of crystals (hygroscopic such as LaBr3:Ce and CeBr3 or non-hygroscopic such as PrLuAg and CeCAAG from different manufacturers) were used, together with different SiPM arrays, from Hamamatsu, Advansid and SENSL. Results were obtained both with a standard spectroscopic chain and with a direct readout based on a CAEN FADC, more suitable for direct experimental applica- tions. Different experimental key factors, such as crystal intrinsic activity, crystal wrapping, SiPM temperature monitoring will be discussed. Results on energy resolution, detector linearity, … will be presented. As an example an energy resolution ~ 3.6%, at the Cs137 peak, was obtained with LaBr3:Ce crystals with Hamamatsu S13361 array readout, that compares well with best available results.
Experimental Collaboration
Primary authors: BONESINI, Maurizio (Universita & INFN, Milano-Bicocca (IT)); BERTONI, Roberto (INFN Milano Bicocca); CLEMENZA, Massimiliano (Università di Milano Bicocca); MAZZA, Roberto (INFN Milano Bicocca); CERVI, Tommaso (Universita and INFN Pavia ); DE BARI, Antonio (Universita’ and INFN Pavia); MENEGOLLI, Alessandro (Universita’ and INFN Pavia); ROSSELLA, Massimo (INFN Pavia )
Presenter: BONESINI, Maurizio (Universita & INFN, Milano-Bicocca (IT)) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 523 EPS-HEP 2017 / Report of Contributions Nuclear Dynamics probed in …
Contribution ID: 664 Type: Parallel Talk
Nuclear Dynamics probed in Electron-Ion Scattering at TeV Energies Friday, 7 July 2017 17:45 (15 minutes)
The Large Hadron-electron Collider LHeC and the Future Circular Collider in electron-hadron mode FCC-eh will provide unique electron-lead collisions with center-of-mass energies in the range 0.8-2.2 TeV, and instantaneous luminosities around 1033 cm−2s−1 per nucleon that will result in luminous data samples of typically 10 fb−1 per nucleon. In this talk, we illustrate the resulting unprecedented opportunity to resolve nuclear structure and dynamics in a hugely ex- tended kinematic range. We present new results on the determination of the lead parton densities in the EPPS16 framework that already includes pPb data from the LHC. We then discuss the pos- sible impact of ePb studies on the search for a new non-linear regime of QCD, those of saturated parton densities. Finally, we show the potential of the study of elastic vector meson production to determine saturation effects and to access the transverse profile of both nucleons and nuclei.
Experimental Collaboration
Primary author: ARMESTO PEREZ, Nestor (Universidade de Santiago de Compostela (ES)) Presenter: DI NEZZA, Pasquale (INFN e Laboratori Nazionali di Frascati (IT)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 524 EPS-HEP 2017 / Report of Contributions CosmoHub and SciPIC: Massive co …
Contribution ID: 665 Type: Parallel Talk
CosmoHub and SciPIC: Massive cosmological data analysis, distribution and generation using a Big Data platform Thursday, 6 July 2017 15:45 (15 minutes)
Galaxy surveys require support from massive datasets in order to achieve precision estimations of cosmological parameters. The CosmoHub platform and SciPIC pipeline have been developed at the Port d’Informació Científica (PIC) to provide this support, achieving nearly interactive per- formance in the processing of multi-Terabyte datasets. Cosmology projects currently supported include ESA’s Euclid space mission, the Dark Energy Survey (DES), the Physics of the Accelerating Universe (PAU) survey and the Marenostrum Institut de Ciències de l’Espai Simulations (MICE). Support for additional projects can be added as needed. CosmoHub (https://cosmohub.pic.es) is a web portal to perform interactive analysis of massive cosmological data. It enables users to in- teractively explore and distribute data without any SQL knowledge. It is built on top of Apache Hive, part of the Apache Hadoop ecosystem, which facilitates reading, writing, and managing large datasets. More than two billion objects, from public and private data, as well as observed and simulated data, are available. Over 400 users have produced over the last three years about 1500 custom catalogs occupying 2TB in compressed format. All those datasets can be interactively explored using an integrated visualization tool. The current implementation allows an interactive analysis of billion object datasets to complete in less than 25 seconds. The SciPIC scientific pipeline has been developed to efficiently generate mock galaxy catalogs using as input a dark matterhalo population. It runs on top of the Hadoop platform using Apache Spark, which is an open-source cluster-computing framework. The pipeline is currently being calibrated to populate the fullsky Flagship dark matter halo catalog produced by the University of Zürich, which containins about44 billion dark matter haloes in a box size of 3.78 Gpc/h. The resulting mock galaxy catalog isdirectly saved in the CosmoHub platform.
Experimental Collaboration Euclid, PAU, DES, MICE
Primary authors: Dr CARRETERO, Jorge (IFAE-PIC); Mr TALLADA, Pau (CIEMAT-PIC); Mr CASALS, Jordi (CIEMAT-PIC); Mr CAUBET, Marc (CIEMAT-PIC); Dr CASTANDER, Francisco (Institut de Ciències de l’Espai, IEEC-CSIC); Dr BLOT, Linda (Institut de Ciències de l’Espai, IEEC-CSIC); Mr ALARCÓN, Alex (Institut de Ciències de l’Espai, IEEC-CSIC)
Co-authors: Mr SERRANO, Santi (Institut de Ciències de l’Espai, IEEC-CSIC); Dr FOSALBA, Pablo (Institut de Ciències de l’Espai, IEEC-CSIC); Dr ACOSTA, Carles (IFAE-PIC); Dr TONELLO, Nadia (IFAE-PIC); Mr TORRADEFLOT, Francesc (IFAE-PIC); Dr NEISSNER, Christian (IFAE-PIC); Prof. DELFINO, Manuel (UAB, IFAE-PIC)
Presenter: Dr CARRETERO, Jorge (IFAE-PIC) Session Classification: Detectors and data handling
October 6, 2021 Page 525 EPS-HEP 2017 / Report of Contributions CosmoHub and SciPIC: Massive co …
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 526 EPS-HEP 2017 / Report of Contributions New measurements of neutrino- …
Contribution ID: 666 Type: Parallel Talk
New measurements of neutrino-nucleus interactions in T2K Thursday, 6 July 2017 12:30 (15 minutes)
The T2K long-baseline neutrino experiment has new neutrino cross-section measurements. Inad- dition to being interesting in their own right, measuring neutrino cross sections is vital as they correspond to a major systematic uncertainty for neutrino oscillation analyses. In particular, the new results focus on exploiting the water targets in the T2K off-axis near detector, ND280, updating our charged-current measurements witha wider phase space, addressing in more detail the neutrino interaction vertex, and other new mea- surements. This talk will give an overview of the T2K neutrino cross-section measurements, fo- cusing on the latest results.
Experimental Collaboration T2K
Primary author: Dr FINCH , Alex (Lancaster University,UK) Presenter: Dr FINCH , Alex (Lancaster University,UK) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 527 EPS-HEP 2017 / Report of Contributions The latest T2K neutrino oscillation …
Contribution ID: 667 Type: Parallel Talk
The latest T2K neutrino oscillation results Thursday, 6 July 2017 09:30 (15 minutes)
T2K is a long-baseline neutrino oscillation experiment taking data since 2010. A neutrino beam is produced at the J-PARC accelerator in Japan and is sampled at a Near Detector complex 280 m from the neutrino production point and at the far detector, Super-Kamiokande. Beams predominantly composed of muon neutrinos or muon anti-neutrinos have been produced by changing the currents in the magnetic focusing horns. The additional neutrino-mode data collected with T2K in 2017 have doubled the statistics relative to previous analysis releases. This presentation will show the most recent T2K oscillation results obtained from a combined analysis of the entire available data set in the muon neutrino and muon anti-neutrino disappearance channels, and in the electron neutrino and electron anti-neutrino appearance channels. Using these data, we measure four | 2 | oscillations parameters: sin θ23, sin θ13, ∆m32 and δCP , as well as the mass ordering.
Experimental Collaboration T2K
Primary author: Dr HAEGEL, Leila (University of Geneva, Switzerland) Presenter: Dr HAEGEL, Leila (University of Geneva, Switzerland) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 528 EPS-HEP 2017 / Report of Contributions Radiative energy loss in absorptive …
Contribution ID: 668 Type: Parallel Talk
Radiative energy loss in absorptive medium Friday, 7 July 2017 15:45 (15 minutes)
Understanding the energy loss of strongly interacting particles is of utmost importance for study- ing the quark‐gluon plasma (QGP). This very hot and dense state of matter is created during heavy‐ion collisions, like the ones performed at the LHC. As the lifetime of the QGP is very brief, special probes are necessary to study it. One of them consists in focusing on the energy loss of energetic quarks or gluons (so-called partons) created in the early stages of the collision. These partons go through the QGP and are sensitive to all its development. One can then compare the energy spectrum of this kind of particles after going through the QGP or after going through usual nuclei and learn features of the QGP by comparison. For this it is important to master theoretically the energy loss of these partons. A particle can loose energy either by collisional processes (diffusion in the medium) or by radiative mechanisms (bremsstrahlung). The emission of a gluon takes a certain amount of time calledthe formation time. In the medium, this time can be longer than the mean free path of the particle leading to the LPM effect and a modification of the emission spectrum. But what if during itsfor- mation the gluon emits other gluons in turn. One phenomenological way to deal with this effect is to associate a damping rate to the first emitted gluon, and then investigate the consequences on its parent parton energy loss. In this presentation, we use the formalism developed in 1 to study the in-medium radiation by en- ergetic quarks or gluons. In this formalism the propagation of a parton and its elastic scatterings with the medium is driven by a two-point correlator of the gluon field in the medium. We examine the modification of the two-point correlator for collisions that are accompanied by bremsstrahlung gluons that are sufficiently soft so as to be formed before the next interaction, and study whether this leads to a damping scenario. 1 Blaizot et al, JHEP01(2013)143
Experimental Collaboration
Primary author: PARENT DU CHATELET, Alexandre Co-authors: GOUSSET, Thierry; GOSSIAUX, Pol Bernard (EMN) Presenter: PARENT DU CHATELET, Alexandre Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 529 EPS-HEP 2017 / Report of Contributions The search for sterile neutrinos at…
Contribution ID: 669 Type: Parallel Talk
The search for sterile neutrinos at Future Circular Colliders Friday, 7 July 2017 18:15 (15 minutes)
Sterile neutrinos are among the most attractive extensions of the SM to generate the light neutrino masses observed in neutrino oscillation experiments. When the sterile neutrinos are subject to a “lepton number”-like symmetry they can have masses around the electroweak scale and potentially large Yukawa couplings, which makes them testable at the planned Future Circular Colliders (FCC). In this talk I present an overview of the sterile neutrino searches at the FCC in its electron-positron, proton-proton, or electron-proton configuration. Therefore I provide a systematic assessment of the search channels, give the state of the art sensitivities for the most promising signatures and discuss the synergy and complementarity of the different FCC configurations.
Experimental Collaboration
Primary author: Dr FISCHER, Oliver (University Basel) Co-authors: Prof. ANTUSCH, Stefan (University Basel); Mr CAZZATO, Eros (University Basel)
Presenter: Mr CAZZATO, Eros (University Basel) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 530 EPS-HEP 2017 / Report of Contributions Scientific careers from the point of…
Contribution ID: 670 Type: Poster Presentation
Scientific careers from the point of view of male and female students
In the framework of the Masterclass of particle physics in Pisa, each year a questionnaire is given to the students to assess if the Masterclass met a positive response.Together with specific ques- tions about the various activities they took part in during the Masterclass day, we ask them if they would like to become a scientist. They are offered 15 possible motivations for a “yes” or a“no”to choose from. This year, in order to increase the statistics, we gave the same questionnaire alsoto group of students attending the Masterclass in other italian universities. We expect this sampleto be enriched in students interested in scientific disciplines. On the other hand, we gave a reduced version of the questionnaire also to students attending the last year of high-school but not taking part to the Masterclass. We expect this last sample to be enriched in students not necessarely inter- ested in scientific disciplines. The data have been analysed from a gender perspective. With this study we tried to investigate if male and female students have a different perception of scientific careers and to get hints on how to intervene to correct the path that seems to naturally bring male students towards STEM disciplines (science, technology, engineering, and mathematics) and reject female students from them.
Experimental Collaboration
Primary author: Dr LEONE, Sandra (INFN Sezione di Pisa) Presenters: Dr LEONE, Sandra (INFN Sezione di Pisa); LEONE, Sandra (INFN Sezione di Pisa, Universita’ e Scuola Normale Superiore, P) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 531 EPS-HEP 2017 / Report of Contributions A framework for High Energy Fac …
Contribution ID: 671 Type: Parallel Talk
A framework for High Energy Factorisation matched to parton showers Friday, 7 July 2017 10:45 (15 minutes)
High Energy Factorisation was applied so far almost exclusively to Deep Inelastic Scattering pro- cess, as computing gauge invariant matrix elements with off shell external legs is a highly non trivial task. In recent years, this problem has been completely solved in a variety of ways, both analytically and numerically. The times are mature to produce the first phenomenological predic- tions.
We present the first framework to produce predictions for hadron colliders based on matching off shell gauge invariant matrix elements in the High Energy Factorisation kinematics and for any Standard Model process to the parton showers implemented in the CASCADE program. We then discuss predictions for multi-jet phenomenology, with a special focus on the description of ATLAS and CMS data for inclusive four-jet production with and without Multi Parton Interactions.
Experimental Collaboration
Primary authors: SERINO, Mirko (Institute of Nuclear Physics, Polish Academy of Sciences); KU- TAK, Krzysztof (Instytut Fizyki Jadrowej Polskiej Akademii Nauk); VAN HAMEREN, Andreas (IFJ PAN); JUNG, Hannes (Deutsches Elektronen-Synchrotron (DE)); SAPETA, Sebastian Piotr (Polish Academy of Sciences (PL)); BURY, Marcin (Institute of Nuclear Physics, Polish Academy of Sciences)
Presenter: SERINO, Mirko (Institute of Nuclear Physics, Polish Academy of Sciences) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 532 EPS-HEP 2017 / Report of Contributions NIKA2: a mm camera for cluster c …
Contribution ID: 672 Type: Parallel Talk
NIKA2: a mm camera for cluster cosmology Friday, 7 July 2017 11:30 (15 minutes)
Clusters of galaxies are unique cosmological probes sensitive to the primordial density fluctuations, and the expansion history and energy content of the Universe. The thermal Sunyaev-Zeldovich (tSZ) effect is an observable of choice for cluster cosmology due tothe low scatter in therelation- ship between SZ flux and cluster mass, and the construction of large tSZ selected cluster catalogs by Planck, ACT and SPT. However, there exists a weak discrepancy between cluster and CMB cos- mological constraints, which may due to bias in the observable-mass relation. Physical processes at play in clusters may be at the origin of this bias and could affect more importantly high redshift clusters. Thus, accurate cluster cosmology requires detailed mapping of the cluster emission from the core to the outskirts. This is the purpose of the NIKA2 tSZ large program, aiming at mapping a representative sampleof 50 tSZ selected high redshift clusters, 0.5 < z < 1.0, for a total of 300 hours of observation. NIKA2 is a dual-band camera made of 2680 KIDs operating at 150 and 260 GHZ, installed at the IRAM 30 m telescope, with a FOV of 6.5’, and 18” and 12” resolution at 150 and 260 GHz. With such instrumental capabilities NIKA2 is a unique instrument for tSZ observations making possible high sensitivity mapping of high redshift clusters in a few hours. The main output of the NIKA2tSZ program will be the study of the redshift evolution of the cluster pressure profiles as well asthat of the scaling laws relating the cluster global properties. X-ray observations of the NIKA2 cluster sample obtained with the XMM Newton satellite will be also used.
We will review current cluster cosmology results and describe the NIKA2 instrument and its pro- totype NIKA1. We will illustrate the NIKA2 tSZ capabilities using recent NIKA1 results in a pilot sample of high redshift clusters. Finally, we will present the NIKA2 tSZ LP, synergy with theX-ray observations, and cosmological perspectives.
Experimental Collaboration NIKA2
Primary authors: Dr MACIAS-PEREZ, Juan Francisco (LPSC); NIKA2 COLLABORATION Presenter: Dr MACIAS-PEREZ, Juan Francisco (LPSC) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 533 EPS-HEP 2017 / Report of Contributions Tracking in 4 dimensions
Contribution ID: 673 Type: Parallel Talk
Tracking in 4 dimensions Friday, 7 July 2017 11:30 (20 minutes)
In this contribution we will present the progresses toward the construction of a silicon tracking system able to measure the passage of charged particles with a combined precision of ∼ 10 ps and ∼ 10 μm, either using a single type of sensor, able to concurrently measure position and time, or a combination of position and time sensors. The recent development of controlled multiplications in Low-Gain Avalanche Detectors (LGAD) has opened up the possibility of manufacturing silicon detectors with signal larger than that of traditional sensors, but with still very low noise, therefore enabling precision time measurements. The basic mechanism of LGAD is to obtain charge multiplication within the bulk of a silicon sensor by adding a thin multiplication layer just underneath the p-n junction. The inclusion of timing information in the structure of a recorded event has the capability of changing the way we design experiments, as this added dimension dramatically improves the reconstruction process. Depending on the type of sensors that will be used, timing information can be available at different stages in the reconstruction of an event, for example (i) at tracking reconstruction, if timing is associated to each point or (ii) during the event reconstruction, if timing information is associated to each track.
We will first review the current LGAD manufacturing schemes, the results obtained at beam tests, than the mitigation techniques implemented to built radiation hard LGAD sensors, and finally how 4D tracking is being included in future experiments and its impact in the reconstruction of physics quantities. We will also present the research and development of the LGAD read-out elec- tronics, showing the current best limits and reviewing the possible technological choices currently developed.
Experimental Collaboration
Primary authors: ARCIDIACONO, Roberta (Universita e INFN Torino (IT)); CARTIGLIA, Nicolo (INFN Torino); CENNA, Francesca (Universita e INFN Torino (IT)); OBERTINO, Maria Margherita (Universita e INFN Torino (IT)); SOLA, Valentina (Universita e INFN Torino (IT)); MANDURRINO, Marco (INFN); COSTA, marco (University of Torino); STAIANO, Amedeo (Universita e INFN Torino (IT)); FERRERO, Marco (Universita e INFN Torino (IT)) Presenter: CARTIGLIA, Nicolo (INFN Torino) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 534 EPS-HEP 2017 / Report of Contributions The BM@N experiment at JINR: st…
Contribution ID: 674 Type: Poster Presentation
The BM@N experiment at JINR: status and physics program
BM@N (Baryonic Matter at Nuclotron) is the first experiment to be realized at the accelerator complex of NICA-Nuclotron at JINR (Dubna, Russia). The aim of the experiment is to study inter- actions of relativistic heavy ion beams with energy up to 5.5 AGeV with fixed targets. The research program of the experiment includes studies of strange mesons, multi-strange hyperons and light hyper-nuclei which are produced in nucleus-nucleus collisions close to the kinematic threshold. The BM@N set-up, the experimental program and first results of technical runs are presented.
Experimental Collaboration BM@N
Primary author: Mr GLEB, Pokatashkin (LHEP JINR) Presenters: Mr GLEB, Pokatashkin (LHEP JINR); RUFANOV, Igor (J); VASENDINA,V; ZINCHENKO, Alexandre (Joint Institute for Nuclear Research (RU)) Session Classification: Poster session
Track Classification: Heavy Ion Physics
October 6, 2021 Page 535 EPS-HEP 2017 / Report of Contributions Machine and deep learning techni …
Contribution ID: 675 Type: Parallel Talk
Machine and deep learning techniques in heavy-ion collisions with ALICE Thursday, 6 July 2017 18:00 (15 minutes)
Over the last years, machine learning tools have been successfully applied to a wealth of problems in high-energy physics. A typical example is the classification of physics objects. Supervised machine learning methods allow for significant improvements in classification prob- lems by taking into account observable correlations and by learning the optimum selection from examples, e.g. from Monte Carlo simulations. Even more promising is the usage of deep learning techniques. Methods like deep convolutional networks might be able to catch features from low-level parameters which are not exploited by default cut-based methods. These ideas could be particularly beneficial for measurements in heavy-ion collisions, becauseof the very large multiplicities. Indeed, machine learning methods potentially perform much better in systems with a large number of degrees of freedom compared to cut-based methods. Moreover, many key heavy-ion observables are most interesting at low transverse mo- mentum where the underlying event is dominant and the signal-to-noise ratio is quite low.
In this talk, recent developments of machine and deep learning applications in heavy-ion collisions with ALICE will be presented, with focus on a deep learning based b-jet tagging approach and the measurement of low-mass dielectrons. While the b-jet tagger is based on a mixture of shallow fully- connected and deep convolutional networks, the low-mass dielectron measurement uses gradient boosting and shallow neural networks. Both methods are very promising compared to default cut-based methods.
Experimental Collaboration ALICE
Primary author: HAAKE, Rudiger (CERN) Presenter: HAAKE, Rudiger (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 536 EPS-HEP 2017 / Report of Contributions The unquenched quark model and…
Contribution ID: 677 Type: Poster Presentation
The unquenched quark model and its last application in baryons.
In this contribution, we briefly analyze the formalism of the unquenched quark model (UQM)and its application to calculate the mass shifts of ground-state octet and decuplet baryons due tothe coupling to the meson-baryon continuum. We describe the electro-production of Baryon-Meson states from proton in the framework of the UQM. Finally, we discuss the strangeness suppression factor within the UQM. The theoretical results are in good agreement with the values extracted from CERN and JLab experiments.
Experimental Collaboration
Primary authors: GARCIA-TECOCOATZI, Hugo (ICN-UNAM and INFN Genova); SANTOPINTO, Elena (INFN e Universita Genova (IT)); FERRETTI, Jacopo (INFN - National Institute for Nuclear Physics); Prof. BIJKER, Roelof (ICN-UNAM )
Presenter: GARCIA-TECOCOATZI, Hugo (ICN-UNAM and INFN Genova) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 537 EPS-HEP 2017 / Report of Contributions Nuclear modification factor and el …
Contribution ID: 679 Type: Parallel Talk
Nuclear modification factor and elliptic flow of open heavy flavours in Pb–Pb collisions with ALICE at the LHC Thursday, 6 July 2017 15:00 (15 minutes)
The LHC heavy-ion physics program aims at investigating the properties of the Quark-Gluon Plasma, QGP, formed in such collisions. Heavy quarks (charm and beauty) are regarded as ef- ficient probes to study and characterize the QGP, as they are created on a very short timescale in initial hard processes and subsequently experience the entire system evolution interacting with the medium constituents.
The measurement of the nuclear modification factor, RAA, of heavy-flavour particles gives impor- tant information about the colour-charge and parton-mass dependence of energy loss as well as about possible modifications of heavy-quark hadronization in the medium. In addition, the heavy- flavour elliptic flow, v2, provides insights on the degree of thermalization of heavy quarks in the deconfined medium and carries information on the path-length dependence of parton energy loss, in the low- and high-pT regions respectively. The heavy-flavour particles are measured in ALICE over a wide rapidity range, via Dmesonsand heavy-flavour hadron decay electrons at mid-rapidity (|y| < 0.8), and heavy-flavour hadron decay muons at forward rapidity (2.5 < y < 4). p R v The latest results on the T-differential√ AA and 2 of D mesons and heavy-flavour hadron decay leptons in Pb–Pb collisions at sNN = 5.02 and 2.76 TeV performed with ALICE will be presented for different centrality classes and compared with theoretical model predictions. The results in different rapidity regions provide further information on the properties of the medium. Thelep- tons at high pT come mainly from beauty-hadron decays, therefore they are sensitive to transport properties of beauty quarks in the medium. Finally, the results obtained with the Event-Shape En- gineering (ESE) technique applied to the D-meson v2 in semi-central Pb–Pb events to investigate the influence of initial geometry fluctuations to heavy-flavour production will beshown.
Experimental Collaboration ALICE
Primary author: ALICE COLLABORATION Presenter: ZHANG, Xiaoming (Central China Normal University CCNU (CN)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 538 EPS-HEP 2017 / Report of Contributions Neutrino Oscillation Physics and P …
Contribution ID: 680 Type: Parallel Talk
Neutrino Oscillation Physics and Proton Decay with Hyper-Kamiokande Thursday, 6 July 2017 17:30 (15 minutes)
Hyper-Kamiokande is a next generation water Cherekov detector consisting of 2 tanks,each with 187 kton fiducial mass, to be built in a staged approach. Hyper-Kamiokande will detect neutrinos produced by the upgraded J-PARC accelerator complex, as well as atmospheric neutrinos. It will make precision measurements of neutrino mixing parameters by a combination of acceler- ator and atmospheric neutrinos and it will enable us to search for proton decay and other exotic phenomena with an order of magnitude more data than current experiments. This talk will de- scribe this rich physics program. Recent studies of the option for building the second tank in Korea to probe mass hierarchy will also be presented.
Experimental Collaboration Hyper-Kamiokande Collaboration
Presenters: LABARGA, Luis (UAM); LABARGA , Luis (UAM) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 539 EPS-HEP 2017 / Report of Contributions Compact Pentaquark Structures
Contribution ID: 682 Type: Poster Presentation
Compact Pentaquark Structures
The lightest pentaquark state recently observed by the LHCb collaboration, P(4380), is described with a compact multiquark approach. By using very general arguments, dictated by symmetry considerations, it is shown that this state belongs to an SU(3) flavour octet. A complete classica- tion of all possible states and quantum numbers, which can be useful both to the experimentalists in their search for new findings and to theoretical model builders is given, without introducing any particular dynamical model. Some predictions finally are provided with a Gürsey-Radicati inspired mass formula. The predicted mass of the lightest pentaquark state reported by LHCb, P(4380), is in agreement with the experimental mass within one standard deviation. Moreover, the predicted masses of the all the octet pentaquark states and the possible bottom baryon decay channels, which involve the predicted resonances as intermediate states, are pro- vided. Finally, the partial decay widths for all the predicted pentaquark resonances are computed.
Experimental Collaboration
Primary authors: GIACHINO, Alessandro (INFN - National Institute for Nuclear Physics); Dr SANTOPINTO, Elena (INFN )
Presenter: GIACHINO, Alessandro (INFN - National Institute for Nuclear Physics) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 540 EPS-HEP 2017 / Report of Contributions Exotic spectroscopy
Contribution ID: 683 Type: Parallel Talk
Exotic spectroscopy Saturday, 8 July 2017 12:30 (15 minutes)
Theoretical results on heavy meson exotic spectroscopy will be presented mainly concentrating on hybrid heavy charmonia and bottomonia states. Theoretical results for heavy hybrids states, c-antic-gluons systems, will be compared with experimental data. Finally the emerging differences for exotic mesons when described as compact tetraquarks, hybrid mesons, molecules or core mesons plus higher Fock components will be discussed. References: Heavy quarkonium hybrids from Coulomb gauge QCD, P. Guo, A. P. Szczepaniak, E. Santopinto, Phys.Rev. D78 (2008) 056003 Quark structure of the X(3872)X(3872) and χb(3P)χb(3P) resonances J. Ferretti, G. Galatà , E. Santopinto, Phys.Rev. D90 (2014) no.5, 054010
E. Santopinto et al., Phys.Lett. B759 (2016) 214-217
Experimental Collaboration
Primary author: SANTOPINTO, Elena (INFN Sezione di Genova and Universita’ di Genova) Presenters: SANTOPINTO, Elena (INFN Sezione di Genova and Universita’ di Genova); SAN- TOPINTO, Elena (INFN e Universita Genova (IT)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 541 EPS-HEP 2017 / Report of Contributions …
Contribution ID: 685 Type: Parallel Talk
cN =2∗ (non-)Abelian theory in the Ω-background from String theory
Saturday, 8 July 2017 11:50 (20 minutes)
We present a D-brane realisation of the (non-)Abelian N = 2∗ theory. For Ω deformation we compute suitable topological amplitudes in this setup. These amplitudes are expressed as a double series expansion. The coefficients determine couplings of higher-dimensional operators inthe effective supergravity action that involve powers of the anti-self-dual N = 2 chiral Weyl superfield and of self-dual gauge field strengths superpartners of the D5-brane coupling modulus. In thefield theory limit, as it is expected, the result reproduces the Nekrasov partition function in the two- parameter Ω-background.
Experimental Collaboration
Primary authors: Dr SAMSONYAN, Marine (CERN); Prof. ANGELANTONJ, Carlo (University of Torino); Prof. ANTONIADIS, Ignatios (LPTHE, CNRS UMR 7589, Albert Einstein Center for Fundamen- tal Physics, ITP)
Presenter: Dr SAMSONYAN, Marine (CERN) Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 542 EPS-HEP 2017 / Report of Contributions Color coherence in multiple anten …
Contribution ID: 686 Type: Parallel Talk
Color coherence in multiple antenna medium radiation Friday, 7 July 2017 16:30 (15 minutes)
We present the conguration in which a quark-antiquark pair with a fixed opening angle emits a hard gluon inside a medium, and an additional very soft emission afterwards (double antenna). We discuss the coherence effects in terms of the survival probability, which describes the interaction of the quark-antiquark-gluon system with the medium. We generalize previous studies of the antenna radiation to the case of more than two emitters and prove that this gen- eralization provides further support to the picture of jet quenching with effective emitters in the parton cascade. Our results definitely conclude that the results from the antenna setup (two emit- ters) can be easily generalized to the case of more than two emitters. These computations go astep forward to obtain a complete description of a QCD cascade.
Experimental Collaboration
Primary authors: DOMINGUEZ, Fabio (Universidade de Santiago de Compostela); VILA, Víctor (Universidade de Santiago de Compostela)
Presenter: VILA, Víctor (Universidade de Santiago de Compostela) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 543 EPS-HEP 2017 / Report of Contributions Open heavy-flavour production in …
Contribution ID: 687 Type: Parallel Talk
Open heavy-flavour production in p-Pb collisions measured with ALICE at the LHC Thursday, 6 July 2017 15:45 (15 minutes)
Heavy quarks (charm and beauty) are probes of the Quark-Gluon Plasma (QGP) formed in high- energy nuclear collisions. They are produced in hard partonic scattering processes occurring in the initial stage of the collisions, propagate through the medium, and interact with its constituents, thus probing the entire evolution of the system. The heavy-flavour production in proton-nucleus collisions is sensitive to Cold Nuclear Matteref- fects (CNM), such as the modification of the parton distribution functions of nuclei due toshadow- ing or saturation, and parton energy loss in cold nuclear matter. These effects can induce amodi- fication of the heavy-flavour production at low momentum and their measurement is requiredto understand final-state effects related to the presence of the QGP in Pb–Pb collisions. The study of heavy-flavour production as a function of the multiplicity of charged particlespro- duced in the collision can provide information on the dependence of CNM effects on the collision geometry and on the density of final-state particles. In addition, the possible presence of collective effects in high-multiplicity p–Pb events could mod- ify the pT distributions of heavy-flavour hadrons.
ALICE measures open heavy-flavour production via the reconstruction of D-meson hadronic de- cays and electrons from heavy-flavour hadron decays at mid-rapidity, and √of muons from heavy- flavour hadron decays at forward rapidity. Recent results in p-Pb collisions at sNN= 5.02 TeV collected during the Run-1 and Run-2 LHC periods will be presented. In particular, the production 0 cross sections, nuclear modification factors (down to pT = 0 for D mesons), and multiplicity- dependent studies will be shown. The results will be compared with theoretical model predictions.
Experimental Collaboration ALICE
Primary author: ALICE COLLABORATION Presenter: TERREVOLI, Cristina (Universita e INFN, Padova (IT)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 544 EPS-HEP 2017 / Report of Contributions Lepton-flavour violation in a Pati- …
Contribution ID: 688 Type: Parallel Talk
Lepton-flavour violation in a Pati-Salam model with gauged flavour symmetry Saturday, 8 July 2017 11:45 (15 minutes)
Combining Pati-Salam (PS) and flavour symmetries in a renormalisable setup, we devise a scenario which produces realistic masses for the charged leptons. Flavour-symmetry breaking scalar fields in the adjoint representations of the PS gauge group are responsible for generating different flavour structures for up- and down-type quarks as well as for leptons. The model is characterised by new heavy fermions which mix with the Standard Model quarks and leptons. In particular, the partners for the third fermion generation induce sizeable sources of flavour violation. Focusing on the charged-lepton sector, we scrutinise the model with respect to its implications for lepton-flavour violating processes such as µ → eγ, µ → 3e and muon conversion in nuclei.
Experimental Collaboration
Primary authors: Mr CHRISTOPH, Luhn (Theoretische Physik 1, Universität Siegen); Mr FELD- MANN, Thorsten (Theoretische Physik 1, Universität Siegen); Mr PAUL, Moch (Theoretische Physik 1, Universität Siegen)
Presenter: Mr PAUL, Moch (Theoretische Physik 1, Universität Siegen) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 545 EPS-HEP 2017 / Report of Contributions Present status of neutrino cross se …
Contribution ID: 690 Type: Parallel Talk
Present status of neutrino cross section Thursday, 6 July 2017 12:00 (15 minutes)
The present status of neutrino cross section physics is reviewed fo- cusing on the recent theoretical developments in quasielastic scattering, multi-nucleon contributions to the inclusive scattering and pion produc- tion on nucleons and nuclei. A good understanding of these processes is crucial to meet the precision needs of neutrino oscillation experiments. Some of the challenges that arise in the consistent description of Mini- BooNE and MINERvA recent data are discussed.
Experimental Collaboration
Primary author: ALVAREZ-RUSO, Luis Presenter: ALVAREZ-RUSO, Luis Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 546 EPS-HEP 2017 / Report of Contributions The Effect of Fourth Generation St…
Contribution ID: 692 Type: Poster Presentation
The Effect of Fourth Generation+ −Standard Model on the CP Asymmetry in Bs → ϕℓ ℓ Decay
We investigate the influence of the fourth generation of quarks on the CP-asymmetry in Bs → ϕℓ+ℓ− Decay. This new quarks changes the values of the Wilson coefficients C7(µ), C9(µ) and C10(µ) via virtual exchange of the fourth generation up type quark t′. | ∗ | ∼ { − } { } Taking the VtbVts 0.01 0.03 with phase 60, 90, 120 b → sℓ+ℓ− B ∆ , which is consistent with the rate and the s mixing parameter mBs , We obtain that for both (µ, τ) channels the CP-asymmetries are quite sensitive to the 4th generation quarks mass and mixing parameters. Hence, studying CP-asymmetry for Bs rarϕℓ+ℓ− decay with new Wilson coefficients can serve as an effective way to identify thenew generation quarks (t′, b′) in high energy physics laboratories.
Experimental Collaboration
Primary author: Mr MEHRANFAR, hossein (university of Garmian) Presenter: Mr MEHRANFAR, hossein (university of Garmian) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 547 EPS-HEP 2017 / Report of Contributions Prospects for electroweak precisio …
Contribution ID: 694 Type: Poster Presentation
Prospects for electroweak precision measurements and triple gauge couplings at a staged ILC
In absence of a direct discovery of new particles, precision measurements of the properties of known particles will provide the most powerful probe for phenomena beyond the Standard Model. Future electron positron linear colliders with polarised beams, like the International Linear Col- lider (ILC), will provide a unique laboratory for such measurements, complementary to hadron colliders. In this contribution, we will review in particular the prospects for electroweak precision measure- ments, like the mass of the W boson, or the weak mixing angle, as well as for measurements of charged triple gauge couplings based simulations of the ILD detector concept for the ILC. In all of these, the exact knowledge of the beam polarisation and the beam energy plays an important role. Therefore we will also discuss the precision determination of these accelerator parameters from collision data. We will pay special tribute to the most recent discussions concerning a possible first stage of the ILC operating at a center-of-mass energy of 250 or 350 GeV, but also comment of the full ILC running plan.
Experimental Collaboration ILD
Presenter: KARL, Robert (DESY) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 548 EPS-HEP 2017 / Report of Contributions Neutron production from cosmic- …
Contribution ID: 695 Type: Poster Presentation
Neutron production from cosmic-ray muons at Daya Bay
Neutrons induced by cosmic-ray muons are a significant background for underground experiments studying neutrino oscillations, neutrino-less double beta decay, dark matter and other rare-event signals. The Daya Bay Reactor Antineutrino experiment consists of 8 antineutrino detectors (AD) placed in three experimental halls at different baselines from six nuclear reactors. Each ADcon- tains 20 tons of Gd-doped liquid scintillator, serving as the main target for antineutrinos interacting via the inverse beta-decay (IBD) reaction. The data from Daya Bay allows to make a competitive measurement of neutron production by cosmogenic muons at depths of 250, 265 and 860 meters- water-equivalent. This poster will provide a comprehensive review on the status of this study.
Experimental Collaboration Daya Bay Collaboration
Primary author: Ms CHENG, Jie Co-author: Prof. HUANG, Xingtao Presenters: CHENG, Jie; Ms CHENG, Jie Session Classification: Poster session
Track Classification: Neutrino Physics
October 6, 2021 Page 549 EPS-HEP 2017 / Report of Contributions The CERN Neutrino Platform
Contribution ID: 697 Type: Parallel Talk
The CERN Neutrino Platform Thursday, 6 July 2017 11:45 (15 minutes)
The long-baseline neutrino programme has been classified as one of the four highest-priority scien- tific objectives in 2013 by the European Strategy for Particle Physics. The Neutrino Platform isthe CERN venture to foster and support the next generation of accelerator-based neutrino oscillation experiments. Part of the present CERN Medium-Term Plan, the Neutrino Platform provide facilities to develop and prototype the next generation of neutrino detectors and contribute to unify the European neutrino community towards the US and Japanese projects. A significative effort is made on R&D for LAr TPC technologies: two big LAr TPC prototypes for the DUNE far detector are under construction at CERN. Those detectors will be exposed in 2018 to an entirely new and NP-dedicated beam-line from the SPS which will provide electron, muon and hadron beams with energies in the range of sub-GeV to a few GeV. Other projects are also presently under development: one can cite the refurbishing and shipping to the US of the ICARUS detector and the construction BabyMIND a magnetised muon spectrometer to be located on the T2K beam line.
In this talk the status of the CERN Neutrino Platform activities will be presented as well as an overview of the future projects currently under discussion.
Experimental Collaboration
Primary author: BORDONI, Stefania (CERN) Presenter: BORDONI, Stefania (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 550 EPS-HEP 2017 / Report of Contributions Production and radiative decay of …
Contribution ID: 698 Type: Parallel Talk
Production and radiative decay of heavy neutrinos at the Booster Neutrino Beam Friday, 7 July 2017 17:30 (15 minutes)
The MiniBooNE experiment reported results from the analysis of νe and νe appearance searches, which showed an excess of signal-like events at low reconstructed neutrino energies with respect to the expected background. A proposed explanation for this anomaly is based on the existence of a heavy (∼ 50 MeV) sterile neutrino. These νh would be produced by νµ electromagnetic inter- actions, through a transition magnetic dipole moment, and by neutral current interactions [1,2] on nuclei. A fraction of them decays radiatively inside the detector. The emitted photons are misidentified as electrons or positrons in MiniBooNE.
We have investigated the νh production by coherent and incoherent electroweak interactions on CH2 and Ar targets, present in the MiniBooNE and the Short Baseline Neutrino (SBN) detectors (MicroBooNE, SBND and ICARUS) at Fermilab [3]. Following the νh propagation inside the detec- tor we are able to obtain the energy and angular distributions of the final photons. Within the valid range of model parameters, we have obtained the best-fit parameters to describe the MiniBooNE excess of events. To further investigate this scenario, we have obtained the expected the signal at the SBN detectors. The distinctive shape and total number of photon events from this mechanism makes its experimental investigation feasible. 1 S. N. Gninenko, Phys. Rev. D 83 (2011) 015015. [2] M. Masip, P. Masjuan and D. Meloni JHEP 1301 (2013) 106.
[3] L. Alvarez-Ruso, E. Saúl-Sala, manuscript in preparation.
Experimental Collaboration
Primary authors: SAUL SALA, Eduardo (Universidad de Valencia); ALVAREZ-RUSO, Luis Presenter: SAUL SALA, Eduardo (Universidad de Valencia) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 551 EPS-HEP 2017 / Report of Contributions Search for the Lepton Flavour Viol …
Contribution ID: 699 Type: Poster Presentation
Search for the Lepton Flavour Violating Decay Υ(3S) → e±µ∓
Charged lepton flavour violating processes are unobservable in the standard model, but they are predicted to be enhanced in several new physics extensions. Data collected with the BaBar detector at the SLAC PEP-II e+e− collider at a centre-of-mass energy of 10.36 GeV were used to search for electron-muon flavour violation in Υ(3S) → e±µ∓ decays. The search was conducted using a data sample in which 118 million Υ(3S) mesons − were produced, corresponding to an integrated luminosity of 27 fb 1.
Experimental Collaboration BABAR
Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 552 EPS-HEP 2017 / Report of Contributions The PROSA PDF fit and prompt ne…
Contribution ID: 702 Type: Parallel Talk
The PROSA PDF fit and prompt neutrino fluxes Thursday, 6 July 2017 09:54 (18 minutes)
Prompt neutrino fluxes are background for searches of astrophysical neutrinos at Very LargeVol- ume Neutrino Telescopes. We present predictions for these fluxes, obtained by state-of-the-art QCD methods, and we discuss their uncertainties, in particular those related to our approximate knowledge of Parton Distribution Functions. We make use of the PROSA fit, the first fit appeared in literature including LHCb data on heavy-meson hadroproduction, specifically designed for low- x physics. We present the present status of the fit and prospects for future developments. We compare our predictions with experimental data from the IceCube collaboration.
Experimental Collaboration PROSA Collaboration
Primary authors: Dr LIPKA, Katerina (DESY); Dr GARZELLI, Maria Vittoria; GEISER, Achim (DESY); ZENAIEV, Oleksandr; MOCH, S. (UHH) Presenters: Dr GARZELLI, Maria Vittoria; GEISER, Achim (DESY); ZENAIEV, Oleksandr; MOCH, S. (UHH) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 553 EPS-HEP 2017 / Report of Contributions Rare radiative charm decays in the …
Contribution ID: 703 Type: Parallel Talk
Rare radiative charm decays in the standard model and beyond Friday, 7 July 2017 17:00 (15 minutes)
Rare charm decays offer a unique window to probe the up-type sector in flavor physics. Motivated by the recent Belle measurement of the decay D0 → ρ0γ we investigate its standard model contribution as well as physics beyond the standard model (BSM). We study observables of rare radiative charm decays which are testable at colliders and identify possible effects BSM, in particular within leptoquark and supersymmetric models.
Experimental Collaboration
Primary author: DE BOER, Stefan Co-author: HILLER, Gudrun (Technische Universitaet Dortmund (DE)) Presenter: DE BOER, Stefan Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 554 EPS-HEP 2017 / Report of Contributions Open heavy flavor dynamics in he …
Contribution ID: 704 Type: Parallel Talk
Open heavy flavor dynamics in heavy ion collisions: RAA, v1, v2, v3 Thursday, 6 July 2017 15:30 (15 minutes)
We address the present theoretical challenge to have a self-consistent description of both the RAA(pT ) and the elliptic flow v2(pT ) at both RHIC and LHC. We describe the heavy quarks dynamics in the quark-gluon plasma (QGP) by means of a Boltzmann transport approach in which the non-perturbative interaction between heavy quarks and light quark is described by means of a quasi particle approach. Such a model is able to catch the main features of non-perturbative interaction as the increasing of the interaction in the region of low temperature, which is a fundamental ingredient to reproduce the experimental data for the nuclear suppression factor and the elliptic flow. We will also discuss the impact of radiative energy loss calculated in a multiple scattering and higher-twist scheme. Moreover we point out that charm quarks may be an ideal probe of the initial electromagnetic field. In fact thanks to their short formation time, subdominant thermal production and not very large mass they can be a sensitive probe of the initial electromagnetic field and electric conductiv- ity of the bulk matter. Realistic simulation shows a charm/anti-charm opposite transverse flow v1 of the order of a few percent depending on the value of the electric conductivity of the bulk QGP. 1S. K. Das, F. Scardina, S. Plumari, V. Greco, Phys.Rev. C90 (2014) 044901. [2]S. K. Das, F. Scardina, S. Plumari, V. Greco, Phys.Lett. B747 (2015) 260-264.
[3]S. K. Das, S. Plumari, S. Chatterjee, J. Alam, F. Scardina, V. Greco, Phys.Lett. B768 (2017) 260-264.
Experimental Collaboration
Primary authors: SCARDINA, francesco (INFN Catania); PLUMARI, Salvatore (University of Cata- nia (Italy)); GRECO, Vincenzo (University of Catania); DAS, Santosh Kumar (University of Catania, Italy)
Co-authors: MINISSALE, Vincenzo; Mr COCI, Gabriele (INFN - National Institute for Nuclear Physics)
Presenter: PLUMARI, Salvatore (University of Catania (Italy)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 555 EPS-HEP 2017 / Report of Contributions First axion dark matter search with …
Contribution ID: 705 Type: Poster Presentation
First axion dark matter search with toroidal geometry
We, the Institute for Basic Science Center for Axion and Precision Physics Research report the first axion dark matter search with toroidal geometry. A toroidal geometry can provide several advantages, which are a larger volume for a given space and greatly reduced fringe fields which interfere with quantum noise limited superconducting am- plifiers. −8 −1 In this pioneering search, we exclude the axion-photon coupling gaγγ down to about 5×10 GeV over the axion mass range from 24.7 to 29.1 µeV at the 90% confidence level. Prospects for axion dark matter searches with larger scale toroidal geometry are also given.
Experimental Collaboration
Primary author: Dr CHOI, Jihoon (Institute for Basic Science (IBS) / Center for Axion and Precision Physics Research (CAPP))
Presenter: Dr CHOI, Jihoon (Institute for Basic Science (IBS) / Center for Axion and Precision Physics Research (CAPP)) Session Classification: Poster session
Track Classification: Dark Matter
October 6, 2021 Page 556 EPS-HEP 2017 / Report of Contributions Dirac Fermionic Dark Matter Conf …
Contribution ID: 707 Type: Poster Presentation
Dirac Fermionic Dark Matter Confronting the Latest Data
We study the case of Dirac fermionic dark matter (DM). It is well known that the Dirac fermionic DM is seriously constrained from the experiment of spin-independ (SI) elastic cross sections with nuclei in the direct search. To evade the tree level interaction, the quantum numbers of the Dirac DM are taken to be I3 = Y = 0. We find that there is a cancellation in one-loop diagrams, which reduces the cross section and makes the Dirac DM viable in the direct search. For a generic isospin I, we survey the Dirac DM mass constrained by the latest results of the LUX and PendaX-II experiments in the direct search, the observed DM relic density, and the Fermi-LAT data analysis in the indirect search. The velocity averaged cross sections of DM annihilation to the standard model (SM) gauge bosons are significantly enhanced by the Sommerfeld effect. The contributions are further analyzed separately according to the spin configurations of the DM pair. Our predictions can be verified by the future experiments.
Experimental Collaboration
Primary authors: CHUA, Chun-Khiang; WONG, Gwo-Guang (Chung Yuan Christian Univer- sity)
Presenter: WONG, Gwo-Guang (Chung Yuan Christian University) Session Classification: Poster session
Track Classification: Dark Matter
October 6, 2021 Page 557 EPS-HEP 2017 / Report of Contributions Experimental Summary:Performa …
Contribution ID: 708 Type: Parallel Talk
Experimental Summary:Performance and systematics from the g-2 experiment at FNAL Saturday, 8 July 2017 10:00 (30 minutes)
We present the most recent data from the engineering run at FNAL of the new g-2 experiment. The method of extracting the anomalous magnetic moment is summarized and the improvements im- plemented in the new experimental beam delivery, storage ring, detectors and analysis techniques are discussed. The current understanding of the systematics from the experiment and theoryare presented together and the expected sensitivity to BSM physics is discussed.
Experimental Collaboration muon g-2 at Fermilab
Primary author: Dr BEDESCHI, Francco (INFN) Presenter: Prof. LANCASTER, Mark (University College London (UK)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 558 EPS-HEP 2017 / Report of Contributions Construction and Commissioning …
Contribution ID: 709 Type: Poster Presentation
Construction and Commissioning of the beam delivery, storage ring and g-2 detector at FNAL
We present details of the new experimental detector systems for the g-2 experiment at FNAL. We present details of the beam delivery and storage ring at the new FNAL muon campus. In particular we concentrate on the construction of new calorimeters and calibrations system and the trackers . We discuss the status of the these detectors systems from testbeam and compare with results from the 2017 commissioning run. Improvements to the reconstruction techniques and expected performance in the 2018 data taking run are presented.
Experimental Collaboration muon g-2 at Fermilab
Primary authors: Prof. LANCASTER, Mark (University College London (UK)); BEDESCHI, Franco (Universita & INFN, Pisa (IT))
Presenter: GIOIOSA, Antonio (INFN) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 559 EPS-HEP 2017 / Report of Contributions Astroparticle Physics at the DUNE …
Contribution ID: 711 Type: Parallel Talk
Astroparticle Physics at the DUNE experiment Thursday, 6 July 2017 14:30 (18 minutes)
The Deep Underground Neutrino Experiment (DUNE) experiment, a 40-kton underground liquid argon time-projection-chamber detector, will have unique sensitivity to the electron flavor com- ponent of a core-collapse supernova neutrino burst. We present expected capabilities of DUNE for measurements of neutrinos in the few-tens-of-MeV range relevant for supernova detection, and the corresponding sensitivities to neutrino physics and supernova astrophysics. Recent progress and some outstanding issues will be highlighted.
Experimental Collaboration DUNE
Primary author: GIL BOTELLA, Ines (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Presenter: GIL BOTELLA, Ines (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 560 EPS-HEP 2017 / Report of Contributions Sensitivity of the DUNE Experime …
Contribution ID: 712 Type: Parallel Talk
Sensitivity of the DUNE Experiment to CP Violation and to physics beyond the SM Thursday, 6 July 2017 15:00 (15 minutes)
The Deep Underground Neutrino Experiment (DUNE) is a long-baseline neutrino oscillation ex- periment with primary physics goals of determining the neutrino mass hierarchy and measuring delta_CP with sufficient sensitivity to discover CP violation in neutrino oscillation. CP violation sensitivity in DUNE requires careful understanding of systematic uncertainty, with contributions expected from uncertainties in the neutrino flux, neutrino interactions, and detector effects. In this presentation, we will describe the expected sensitivity of DUNE to long-baseline neutrino os- cillation parameters, how various aspects of the experimental design contribute to that sensitivity, and the planned strategy for constraining systematic uncertainty in these measurements.
The detector-beam configuration also provides an excellent opportunity to study physics beyond standard neutrino oscillations. DUNE will be able to search for or constrain a wide variety of physics phenomena beyond the Standard Model, such as, light sterile neutrinos, nonstandard neu- trino interactions, large extra-dimensions, heavy neutrinos, lepton flavor violation, and low mass dark matter. In this talk, we will present preliminary DUNE sensitivities to physics beyondthe Standard Model and discuss the potential of DUNE in understanding these phenomena.
Experimental Collaboration DUNE
Primary author: Dr MARTIN-ALBO, Justo (Oxford) Presenters: Dr MARTIN-ALBO, Justo (Oxford); Dr MARTIN-ALBO, Justo (University of Oxford (GB)); MARTIN-ALBO SIMON, Justo (Universidad de Valencia) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 561 EPS-HEP 2017 / Report of Contributions New results on fluctuations and co …
Contribution ID: 714 Type: Parallel Talk
New results on fluctuations and correlations from the NA61/SHINE experiment at the CERN SPS Friday, 7 July 2017 10:45 (15 minutes)
The exploration of the QCD phase diagram is the most important task of present heavy ionex- periments. In particular, we want to study the phase transition from hadronic to partonic matter and look for the critical point (CP) of strongly interacting matter. Fluctuations and correlations in kinematic characteristics and particle yields may help to locate the CP (in analogy to enlarged fluctuations due to critical opalescence close to a CP in a liquid/gas transition). The strong inter- actions program of the NA61/SHINE experiment may allow to discover or rule out the existence of the CP in the SPS energy domain. For this purpose we√ perform a two-dimensional scan of the (T − µB) phase diagram by varying the energy (5.1 < sNN < 16.8/17.3 GeV) and the system size (p+p, Be+Be, Ar+Sc, Xe+La, Pb+Pb) of the collisions.
In this presentation new NA61/SHINE results on fluctuations and correlations in p+p, Be+Be, and Ar+Sc collisions will be presented. In particular, results on transverse momentum and multiplicity fluctuations, as well as higher order moments of net-charge fluctuations will be discussed. Results on correlations in azimuthal angle and pseudorapidity will be also shown. The NA61/SHINE data will be compared to predictions of string hadronic models and to results from other experiments at the same energy range.
Experimental Collaboration NA61/SHINE Collaboration
Primary author: GREBIESZKOW, Katarzyna (Warsaw University of Technology (PL)) Presenter: GREBIESZKOW, Katarzyna (Warsaw University of Technology (PL)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 562 EPS-HEP 2017 / Report of Contributions Open problems in Neutrino Physics
Contribution ID: 715 Type: Parallel Talk
Open problems in Neutrino Physics Thursday, 6 July 2017 09:00 (30 minutes)
Present status of the major problems in neutrino physics is outlined. New approaches to their solutions, recent advances and developments will be reviewed. Landscape of the problems covers complete reconstruction of the neutrino mass and mixing spectrum, tests of nature of neutrino masses, searches for new physics beyond the SnuM, identification of the mechanism of neutrino mass and mixing generation, establishing possible connections between neutrino properties and other phenomena, elaboration of some still missing phenomenology, in particular, physics of col- lective oscillations in supernovae. Although most of these problems are well known, some new aspects emerge.
Experimental Collaboration
Primary author: SMIRNOV, Alexei (Max-Planck-Institute for Nuclear Physics) Presenters: SMIRNOV, Alexei (Max-Planck-Institute for Nuclear Physics); SMIRNOV, Alexei (ICTP)
Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 563 EPS-HEP 2017 / Report of Contributions Overview of knowns and unknow …
Contribution ID: 716 Type: Parallel Talk
Overview of knowns and unknowns in the standard three-neutrino framework Thursday, 6 July 2017 14:30 (30 minutes)
A global analysis of neutrino masses and mixings, performed within the standard three-neutrino framework, is presented. The combination of current data coming from oscillation experiments, neutrinoless double beta decay searches, and cosmological surveys, provides interesting constraints on the known mass-mixing parameters, as well as intriguing hints on the unknown ones. Con- cerning the latter, we confirm previous hints favoring nonmaximal theta-23 mixing, and nearly maximal leptonic CP violation. We also find that the so-called normal ordering (NO) of neutrino masses appears to be somewhat favored with respect to inverted ordering (IO) at the level of ~2 sigma, mainly by neutrino oscillation data (especially atmospheric), corroborated by cosmologi- cal data in some cases. Detailed constraints are obtained via the chi^2 method, by expanding the parameter space either around separate minima in NO and IO, or around the absolute minimum in any ordering. Implications for upcoming oscillation and non-oscillation neutrino experiments, including beta-decay searches, are also discussed. [Main reference paper: arXiv:1703.04471]
Experimental Collaboration
Primary author: LISI, Eligio (INFN, Bari, Italy) Presenter: LISI, Eligio (INFN, Bari, Italy) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 564 EPS-HEP 2017 / Report of Contributions Status of the KM3NeT/ARCA teles …
Contribution ID: 717 Type: Parallel Talk
Status of the KM3NeT/ARCA telescope Saturday, 8 July 2017 10:00 (15 minutes)
The KM3NeT Collaboration is constructing a research infrastructure hosting the next-generation underwater neutrino observatory. It will be distributed in two sites in the Mediterranean Sea with different configurations: ORCA (Mton scale 2500 depth offshore Toulon (France)) and ARCA(Gton scale, 3500 m offshore Capo Passero (Italy). The KM3NeT/ARCA is the high-energy component and is dedicated for the search of extraterrestrial neutrino sources in the TeV-PeV range. ARCA, with 1 km3 of instrumented volume, will offer independent confirmation of the IceCube flux within about one year of data taking. Furthermore, it will profit of the advantage of this location (better visibility of the Galactic Centre and Galactic Plane compared to the South Pole) and better angular resolution. Optimized to study point-like neutrino fluxes, KM3NeT/ARCA will therefore open the path to identifying their sources. The ARCA telescope is currently under construction about 100 km off-shore Portopalo di Capo Passero (Sicily), at a depth of 3500 m. The first lines havebeen deployed and the analysis ongoing to validate the detector performance. We will present the status of KM3NeT/ARCA and the future prospects of the project.
Experimental Collaboration KM3NeT Collaboration
Primary author: DISTEFANO, Carla Presenter: DISTEFANO, Carla Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 565 EPS-HEP 2017 / Report of Contributions Performance and physics measure …
Contribution ID: 718 Type: Poster Presentation
Performance and physics measurements at protoDUNE-SP
The protoDUNE Single Phase (protoDUNE-SP) TPC is a prototype for the DUNE far detectorand it is currently under construction at CERN. It will not only serve as a test-bed for the engineering design and construction techniques but will also provide a set of key measurements for the future DUNE far detector.
The new H4 extension beam-line at CERN will provide electron, muon and hadron beamswith energies in the range of sub-GeV to a few GeV. The data collected during the test beams will be analysed to assess the performance of a state-of-the-art LAr TPC. For such detectors the event reconstruction is challenging and test beam data will allow the performance of the different recon- struction algorithms, which also involve machine-learning techniques, to be benchmarked and improved. Furthermore, important physics measurements are foreseen with protoDUNE-SP. For example, the study of pion interactions in argon using test beams is fundamental to understand some of the processes that will be seen as part of the primary neutrino interactions and which would modify the event signature in the DUNE detectors. ProtoDUNE-SP will provide new mea- surements of the pion-Ar cross-section, for both positive and negative charges, which will make a vital contribution to improve the current, very limited knowledge of such interactions.
Experimental Collaboration DUNE
Primary author: DUNE Presenters: BORDONI, Stefania (CERN); WHITEHEAD, Leigh (University of Warwick) Session Classification: Poster session
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 566 EPS-HEP 2017 / Report of Contributions Effects of Extra Yukawa Couplings …
Contribution ID: 719 Type: Parallel Talk
Effects of Extra Yukawa Couplings and Alignment Friday, 7 July 2017 18:15 (15 minutes)
The two Higgs doublet model without any ad hoc symmetries, in general should have extraYukawa interactions which cause exotic interactions such as flavor changing neutral processes. Effects of the extra Yukawa interactions can also appear in couplings of the 125 GeV Higgs boson (h) via fermion loop contributions. In this talk, we calculate the hZZ coupling expected to be measured with O(1)% accuracy at future lepton collider exper- iments, at the one-loop level by the on-shell renormalization scheme, and evaluate how the hZZ coupling depends on the mass of extra Higgs bosons and the extra Yukawa coupling ρtt. We find that if ρtt cos γ < 0, where γ is a mixing angle of CP-even Higgs bosons, the ρtt effect induced top loop contribution cancels extra Higgs boson loop contributions and one may have alignment without decoupling, but exotic scalar bosons could have masses at several hundred GeV. We also discuss whether future precision coupling measurements can give stronger bound on ρtt than the current bound from flavor experiments.
Experimental Collaboration
Primary author: Dr KIKUCHI, Mariko Presenter: Dr KIKUCHI, Mariko Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 567 EPS-HEP 2017 / Report of Contributions The DUNE Far Detector
Contribution ID: 723 Type: Poster Presentation
The DUNE Far Detector
DUNE, the DEEP Underground Neutrino Experiment, will be a groundbreaking experiment for long-baseline neutrino oscillation studies, and for neutrino astrophysics and nucleon decay searches. Planning of DUNE continues to proceed rapidly. The DUNE Far Detector will consist of four 10- kiloton fiducial volume modular liquid argon time-projection chambers (LArTPC) placed deep un- derground at the Sanford Underground Research Facility in Lead, South Dakota, USA. The Far Detector will be coupled to the LBNF multi-megawatt wide-band neutrino beam planned for Fer- milab. The LArTPC technology allows for detailed reconstruction of neutrino interaction and nucleon decay final states over an energy range from a few MeV to many GeV, providing high resolution vertex determination, precision charged particle tracking, particle identification, and calorimetry. Photon detector systems embedded within the LArTPC add precise timing capabil- ities for non-beam events. Designs for both single phase and dual phase LArTPC have reached advanced stages; and these designs will be tested through a full-scale prototyping program called ProtoDUNE, to be executed at CERN over the next few years.
Experimental Collaboration DUNE
Primary author: GARCIA-GAMEZ, Diego Presenter: GARCIA-GAMEZ, Diego Session Classification: Poster session
Track Classification: Astroparticle Physics
October 6, 2021 Page 568 EPS-HEP 2017 / Report of Contributions International Masterclasses in Part …
Contribution ID: 724 Type: Poster Presentation
International Masterclasses in Particle Physics – An excellent instrument to inspire high-school students
Particle Physics Masterclasses are a successful tool to engage high-school students with high en- ergy physics. Young people become scientists for one day and perform a tailor-made physics anal- ysis involving real LHC data under the supervision of physicists. In this way students experience methods and tools used in research and gain an appreciation for fundamental science is created. The International Particle Physics Outreach Group (IPPOG) has organized International Master- classes for 13 years. Each year in spring, universities and research labs in more than 50 countries worldwide open their doors and invite high-school students to experience life at the forefront of basic research. In 2016, about 13.000 young people took part in the program.
In 2017, a new facette was added to the program. On the UN International Day of Women andGirls in Science (Feb 11) Masterclass activities were launched by IPPOG for the first time to support and promote the access of women and girls to science education and research activities. Universities and research labs organized 10 Masterclasses for girls. Up to 300 girls participated in the events and analysed LHC data organized by female scientists. 3 videoconferences with CERN were held where the girls talked to CERN women scientists and learned about the careers of these role models.
Experimental Collaboration
Primary author: Dr BILOW, Uta (Technische Universitaet Dresden (DE)) Presenter: Dr BILOW, Uta (Technische Universitaet Dresden (DE)) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 569 EPS-HEP 2017 / Report of Contributions Automated Reconstruction, Signal …
Contribution ID: 726 Type: Poster Presentation
Automated Reconstruction, Signal Processing and Particle Identification in DUNE
Liquid Argon TPC (LArTPC) technology is increasingly prevalent in large-scale detectors designed to observe neutrino scattering events induced by accelerators or by natural sources. LArTPCs con- sist of a very high fraction of active detector material with spatial resolutions on the order of a few millimeters. Three-dimensional interactions are imaged in multiple two-dimensional views by the process of projection onto planes of wires. The goal of automated reconstruction is to correctly classify each neutrino scattering event by the flavor of the incoming neutrino, to separate charged-current events from neutral-current and other backgrounds, and to measure the energies of the incom- ing neutrinos. Detection of neutrinos from supernova bursts and also seaching for nucleon decay are important uses of automated reconstruction algorithms. Because the amount of spatial detail is high and the amount of scattering is high, this reconstruction presents many challenges thatare now being investigated with sophisticated techniques. Signal processing, track and shower identification, particle identification, and event classification by a variety of innovative algorithms are reviewed.
Experimental Collaboration DUNE
Presenter: WALLBANK, Michael Session Classification: Poster session
Track Classification: Accelerators for HEP
October 6, 2021 Page 570 EPS-HEP 2017 / Report of Contributions The DUNE Far and Near Detector
Contribution ID: 727 Type: Parallel Talk
The DUNE Far and Near Detector Thursday, 6 July 2017 17:30 (15 minutes)
We present the plan for the Deep Underground Neutrino Experiment (DUNE) photon detector system and recent research and development work that has contributed to the design. DUNE will be composed of multiple liquid argon time projection chambers (TPCs). In order to determine the full 3D position of a particle in the detector its initial time must be known accurately. This initial time can be determined using the scintillation light, which is produced simultaneously with the charge signal the TPC collects but travels much faster. The DUNE photon detector system is designed to increase the amount of active area sensitive to light while not reducing the available fiducial volume in the liquid argon.
Experimental Collaboration DUNE
Primary author: MCCONKEY, Nicola (Sheffield University) Presenter: MCCONKEY, Nicola (Sheffield University) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 571 EPS-HEP 2017 / Report of Contributions Search for Muon-to-Electron Conv …
Contribution ID: 729 Type: Poster Presentation
Search for Muon-to-Electron Conversion at J-PARC: COMET Experiment
The COMET Experiment at J-PARC aims to search for the lepton-flavour-violating (LFV) processof muon-to-electron conversion in a muonic atom, µ−N → e−N, with a branching-ratio sensitivity of 6 × 10−17, which is 4 orders of magnitude better than the present upper limit. Complemental searches for two kinds of muon LFV decay modes, µ+ → e+γ and µ−N → e−N, are quite important in order to explore the parameter region predicted by most well-motivated theoretical models beyond the Standard Model such as SUSY-GUT, seesaw, little-Higgs, extra- dimension, etc. MEG experiment reported the latest result on µ+ → e+γ search at PSI in Switzerland, and made a strong limit on new physics models, i.e. filling in the missing peace of muon LFV, µ−N → e−N, will certainly play a very important role. The need for such an unprecedented sensitivity places several stringent requirements onboththe muon beam and the detector system. In order to realise the experiment effectively and efficiently, a staged approach to deployment is endorsed by the J-PARC Program Advisory Committee and KEK, and the “COMET Phase-I” experiment will commence its engineering runs in 2019. In Phase-I, a search for µ−N → e−N will be performed with an intermediate sensitivity which is 100 times better than the present upper limit. The construction of experimental facility, beam line, magnets and detectors has been started. The facility building and the main tracking detector has been already completed. One of the most significant milestone to ensure the COMET sensitivity is 8 GeV proton beam commissioning, and the 8 GeV commissioning campaign is currently ongoing at J-PARC.
In this contribution, the current status of construction, results of 8 GeV commissioning, and prospects for COMET Phase-I and Phase-II both are presented.
Experimental Collaboration COMET
Primary author: NISHIGUCHI, Hajime (KEK) Presenter: NISHIGUCHI, Hajime (KEK) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 572 EPS-HEP 2017 / Report of Contributions The search for continuous gravitat …
Contribution ID: 730 Type: Parallel Talk
The search for continuous gravitational waves with LIGO and Virgo detectors Friday, 7 July 2017 17:45 (15 minutes)
Continuous gravitational waves emitted by spinning neutron stars, isolated or in binary systems, are among the main targets of LIGO and Virgo interferometric detectors. No continuous wave has been detected so far, but significant upper limits, providing interesting constraints onthe characteristics and demography of the potential sources, have been obtained. In this talk I will review the current status of continuous wave searches, highlight some recent results and discuss future prospects in this field.
Experimental Collaboration Virgo
Primary author: Dr PALOMBA, Cristiano (INFN sez. di Roma) Presenter: Dr PALOMBA, Cristiano (INFN sez. di Roma) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 573 EPS-HEP 2017 / Report of Contributions The ProtoDUNE-SP Prompt Proce …
Contribution ID: 731 Type: Parallel Talk
The ProtoDUNE-SP Prompt Processing System Thursday, 6 July 2017 17:15 (15 minutes)
The Deep Underground Neutrino Experiment (DUNE) will employ a uniquely large Liquid Argon Time Projection chamber as the main component of its Far Detector. It will include four 10kt modules which will include single and dual-phase Liquid Argon technologies. In order to validate its design, an experimental program been initiated which includes a beam test of large-scale DUNE prototypes at CERN in 2018. The volume of data to be collected by the protoDUNE single-phase detector will amount toafew petabytes and the sustained rate of data sent to mass storage will be in the range of a few hundred MB per second. In addition to careful design of the Data Acquisition, Online Monitoring and Data Handling systems, the protoDUNE experiment requires substantial Data Quality Monitoring capabilities in order to ascertain the condition of the detector and its various subsystems. To this end, a Prompt Processing system has been designed which is complementary to Online Monitoring and is characterized by lower bandwidth, substantial CPU resources and end-to-end latency on the scale of a few minutes. We present the design of the ProtoDUNE Prompt Processing system, the current status of its development and testing and issues related to its interfaces and deployment.
Experimental Collaboration DUNE
Primary author: POTEKHIN, Maxim (Brookhaven National Laboratory (US)) Presenter: POTEKHIN, Maxim (Brookhaven National Laboratory (US)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 574 EPS-HEP 2017 / Report of Contributions Exhibition ”The beginning of ever …
Contribution ID: 732 Type: Parallel Talk
Exhibition ”The beginning of everything. About galaxies, quarks and collisions” Friday, 7 July 2017 14:30 (15 minutes)
The exhibition “The beginning of everything “, which runs from October 2016 to August 2017,has been created in collaboration between the Natural History Museum Vienna and the Institute of High Energy Physics (HEPHY) of the Austrian Academy of Sciences and was visited by more than 300 000 people including about 120 000 children and youth until mid-March2017. „The beginning of everything“ taking visitors on a journey more than 13 billion years back into the past, to the start of the universe, and by communicating most recent scientific knowledge of particle physics and cosmology in a readily comprehensible manner. Renowned Austrian artists such as B. Kowanz and artwork from the art@CMS project by M. Hoch offer a contrasting approach to this complex topic from different visual, optical and acoustic angles and perspectives.
Starting with our solar system and spectacular pictures of the stars and galaxies taken by the Hub- ble Space teleskop the visitor enters the very early universe where the particles become massive, protons and neutrons form and last but not least free electons combine with atomic nuclei to neu- tral atoms. The dominance of dark matter in the universe, matter/antimatter asymmetry aswell as supersymmetry are also on focus. Accordingly, the most recent scientific findings and exper- iments are shown. Visitors can explore the world’s largest scientific experiment of CERN, and discover how fundamental science has changed the world as we know it. Hands-on exhibits for instance the „cosmic microwave background machine“, the interactive touch screen „Big Bang“, and the 1:20-scale model of the CMS-Detector makes the complex topic more understandable. The exhibition is accompanied by an extensive programme with lectures, guided tours with experts, matinees with artists, concerts, etc. Educational programmes for schools and kindergarten are offered. In addition, the fulldome show „The phantom of the universe“ (german version) willbe shown at the NHM Planetarium.
Experimental Collaboration
Primary authors: SCHIECK, Jochen (Austrian Academy of Sciences (AT)); DEMONTE, Brigitte (HEPHY Vienna)
Presenter: SCHIECK, Jochen (Austrian Academy of Sciences (AT)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 575 EPS-HEP 2017 / Report of Contributions Cosinus - Cryogenic Dark Matter s …
Contribution ID: 733 Type: Parallel Talk
Cosinus - Cryogenic Dark Matter searches with NaI crystals Friday, 7 July 2017 11:45 (15 minutes)
Cosinus is a R&D project aiming for the cryogenic operation of NaI-crystals to search for elastic dark matter scattering. NaI-crystals are scintillating and the combined measurement of the scintillation light and the phonon signal allows a precise mea- surement of the deposited energy and a good separation between signal and background events. However, NaI is hygroscopic and requires a special treatment during the construction of the mod- ules. In addition, the scintillation properties of NaI at cryogenic temperatures have not been mea- sured yet. First results and future plans for operating a NaI crystals at cryogenic temperatures will be present. A dark matter direct detection experiment with NaI crystals operating at cryogenic temperatures would provide additional information for the understanding of the dark-mater claim by the DAMA/LIBRA collaboration.
Experimental Collaboration COSINUS Collaboration
Primary author: SCHIECK, Jochen (Austrian Academy of Sciences (AT)) Presenter: SCHIECK, Jochen (Austrian Academy of Sciences (AT)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 576 EPS-HEP 2017 / Report of Contributions Studying Neutrino Oscillations an …
Contribution ID: 735 Type: Parallel Talk
Studying Neutrino Oscillations and Searches for BSM Physics with Atmospheric Neutrinos in DUNE Thursday, 6 July 2017 17:15 (15 minutes)
The 40kt DUNE Far Detector, located at the Sanford Underground Research Facility, willoffer unique capabilities for the study of atmospheric neutrinos. Due to the detector’s excellent energy resolutions, angular resolutions, and particle ID capabilities, atmospheric neutrino analyses in DUNE can provide valuable information about 3-flavor oscillations, despite the relatively modest statistics. These data provide a complementary analysis approach to beam neutrinos, and canhelp resolve ambiguities in beam-only analyses. In this talk we will focus on the determination of the mass hierarchy, octant of theta23, and measurement of Delta_CP using atmospheric neutrinos in DUNE. Atmospheric neutrinos can also lead to a variety of beyond the standard model scenarios for neutrino transitions, propagation, and interactions. Examples that have been previously stud- ied include CPT violation, Lorentz invariance violation, non-standard interactions, Mass Varying Neutrinos (MaVaNs), and sterile neutrinos.
Experimental Collaboration DUNE
Primary author: Dr HIGUERA , Aaron (Houston) Presenters: Dr HIGUERA , Aaron (Houston); HIGUERA, Aaron (University of Houston); HIGUERA, Aaron (Fermilab) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 577 EPS-HEP 2017 / Report of Contributions Results from the 35-ton Liquid- …
Contribution ID: 736 Type: Parallel Talk
Results from the 35-ton Liquid-argon Prototype using Cosmic Rays and Lessons Learned Saturday, 8 July 2017 10:15 (15 minutes)
Liquid argon time projection chambers (LArTPCs) provide a robust and elegant method for measur- ing the properties of neutrino interactions above a few tens of MeV by providing 3D event imaging with excellent spatial resolution. LArTPCs have been chosen by the Deep Underground Neutrino Experiment (DUNE) as the far detector technology and it will play an essential role in the studies of neutrino mass ordering and CP violation as well as searches for proton decays and supernova neutrinos. The 35 ton prototype, located at Fermilab, featured many advanced technologies be- ing considered by the DUNE far detector, such as the membrane cryostat, cold electronics, anode plane assembly (APA) with wrapped wires, silicon photomultipliers to readout scintillation pho- tons, scintillator counters to trigger cosmic ray muons. The high quality data in the 35-ton LArTPC are important to the understanding of many physics effects such as the attenuation caused byim- purities, diffusion, space charge, and calorimetric response of muons, protons and neutral pions.
Experimental Collaboration DUNE
Primary author: WALLBANK, Michael Presenter: WALLBANK, Michael Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 578 EPS-HEP 2017 / Report of Contributions Duble Chooz latest results
Contribution ID: 737 Type: Parallel Talk
Duble Chooz latest results Thursday, 6 July 2017 10:45 (15 minutes)
Nuclear reactor neutrinos were used on the first neutrino detection back in 1956. Since then our knowledge on neutrino physics haven’t stopped broadening, and reactor neutrinos are still an im- portant source of investigation. The Double Chooz (DC) is an experiment on neutrino oscillation based at Chooz nuclear power plant in France. Back in 2011 the DC collaboration reported an indication of non-zero theta_13, the last unmeasured angle of the neutrino PMNS mixing matrix, for the first time using reactor neutrinos. This was confirmed and measured by independent ex- periments in the following year. The DC collaboration has improved its analysis over thelast years, in order to reduce the uncertainty on theta_13 measurement. The use of a second detector, the Near Detector (ND), operating ~400 meters from the reactors, improves the sensitivity by its nearly iso-flux location, in comparison to the Far Detector (FD), around the oscillation maximum ~1000 meters. Further improvement is achieved by making both detectors identical, in order to highly suppress the detection induced systematics. DC is taking data with both detectors since January of 2015, and boosted the event statistics by a novel approach on the Inverse Beta Decay (IBD) selection, considering neutrons captures on Gadolinium and Hydrogen simultaneously, that increases the fiducial volume by more than three times. The precision and accuracy of theta_13 have a leading impact on the current explorations of the neutrino CP violation phase and atmo- spheric mass ordering, when combining all neutrino oscillation measurements in a global analysis. Thus the redundancy of multiple theta_13 experiments is critical, ensuring the findings robustness. In this talk the latest analysis and results towards theta_13 measurement by DC will be showed. The efforts of the DC collaboration beyond theta_13, will also be addressed.
Experimental Collaboration Double Chooz
Primary author: GIL BOTELLA, Ines (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Presenter: GIL BOTELLA, Ines (Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 579 EPS-HEP 2017 / Report of Contributions EPPS16 – First nuclear PDFs to inc …
Contribution ID: 738 Type: Parallel Talk
EPPS16 – First nuclear PDFs to include LHC data Friday, 7 July 2017 12:15 (15 minutes)
We show the results of our recent global analysis of EPPS16 NLO nuclear parton distribution functions (nPDFs). For the first time, dijet and heavy gauge boson production data from LHC proton–lead collisions have been included in a global fit. Especially, the CMS dijets play an im- portant role in constraining the nuclear effects in gluon distributions. With the inclusion ofalso neutrino–nucleus deeply-inelastic scattering and pion–nucleus Drell–Yan data and proper treat- ment of isospin-corrected data, we were able to free the flavor dependence of the valence and sea quark nuclear modifications for the first time. This gives us less biased, yet larger, flavor byflavor uncertainty estimates. The EPPS16 analysis indicates no tension between the data sets used, which supports the validity of collinear factorization and universal nPDFs for nuclear hard-collision pro- cesses in the wide kinematical range studied.
Experimental Collaboration
Primary authors: ESKOLA, Kari J. (University of Jyvaskyla); Mr PAAKKINEN, Petja (University of Jyväskylä); PAUKKUNEN, Hannu (University of Jyväskylä); SALGADO LOPEZ, Carlos Albert (Uni- versidade de Santiago de Compostela (ES))
Presenter: Mr PAAKKINEN, Petja (University of Jyväskylä) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 580 EPS-HEP 2017 / Report of Contributions Thermalization of a strongly inter …
Contribution ID: 739 Type: Parallel Talk
Thermalization of a strongly interacting non abelian plasma Saturday, 8 July 2017 10:00 (20 minutes)
The thermalization process of an out-of-equilibrium boost-invariant strongly interacting non-Abelian plasma is investigated using a holographic method. Boundary sourcing, a distortion of the bound- ary metric, is employed to drive the system far from equilibrium. Thermalization is analyzed in the fully dy- namical system through nonlocal probes: the equal-time two-point correlation function of large conformal dimension operators in the boundary theory, and Wilson loops of different shapes. A dependence of the thermalization time on the size of the probes is found, which can be compared to the result of local observables: the onset of thermalization is first observed at short distances.
Experimental Collaboration
Primary author: DE FAZIO, Fulvia (INFN Sezione di Bari) Presenters: DE FAZIO, Fulvia (INFN Sezione di Bari); DE FAZIO, Fulvia (Universita e INFN, Bari (IT)) Session Classification: QFT and string theory
Track Classification: Quantum Field and String Theory
October 6, 2021 Page 581 EPS-HEP 2017 / Report of Contributions Status of Composite Higgs
Contribution ID: 740 Type: Parallel Talk
Status of Composite Higgs Saturday, 8 July 2017 09:00 (30 minutes)
I will review the current status of the Composite Higgs scenarios. Discussing the advances on both theoretical and experimental sides.
Experimental Collaboration
Primary author: Dr AZATOV, Aleksandr (SISSA ) Presenter: Dr AZATOV, Aleksandr (SISSA ) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 582 EPS-HEP 2017 / Report of Contributions Two-Higgs-doublet model fits wit …
Contribution ID: 741 Type: Parallel Talk
Two-Higgs-doublet model fits with HEPfit Thursday, 6 July 2017 16:45 (15 minutes)
The Two-Higgs-doublet model (2HDM) is one of the most studied extensions of the Standard Model. But just as the other popular “New Physics” models, it gets more and more constrained by recent experimental progress, especially by the LHC data. For all four 2HDM types with a softly broken Z2 symmetry, we present updated results of global analyses obtained with the open-source HEPfit code. We emphasize the impact of the LHC run II data. Furthermore, we discuss 2HDM’s beyond the conventional Z2 symmetric types and the status of their implementation in HEPfit.
Experimental Collaboration
Primary authors: EBERHARDT, Otto (Istituto Nazionale di Fisica Nucleare); Mr COUTINHO, António (Università Roma Tre); CHOWDHURY, Debtosh (INFN, Roma) Presenter: EBERHARDT, Otto (Istituto Nazionale di Fisica Nucleare) Session Classification: Higgs and new physics
Track Classification: Higgs and New Physics
October 6, 2021 Page 583 EPS-HEP 2017 / Report of Contributions Effective kinetic description of the…
Contribution ID: 742 Type: Parallel Talk
Effective kinetic description of the early-time dynamics in heavy-ion collisions Friday, 7 July 2017 12:00 (15 minutes)
In the idealized high-energy limit of heavy-ion collisions, the system right after collisions is de- scribed as an over-occupied gluonic plasma expanding in the longitudinal direction, which is called Glasma. The understanding of the quark dynamics in such a pre-equilibrium state is of primeim- portance as it has a direct connection to electromagnetic probes such as photons. We report on a numerical study of the Boltzmann equation including two-to-two scatterings of gluons and quarks in a Glasma 1. We find that quark distributions show self-similar scaling behavior like thoseof gluons. We also discuss the role of number-changing inelastic scatterings in the time evolution toward chemical equilibration between quarks and gluons.
1 N. Tanji and R. Venugopalan, arXiv:1703.01372.
Experimental Collaboration
Primary author: TANJI, Naoto (Heidelberg University) Presenter: TANJI, Naoto (Heidelberg University) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 584 EPS-HEP 2017 / Report of Contributions Survey of neutrino-nucleus cross- …
Contribution ID: 743 Type: Parallel Talk
Survey of neutrino-nucleus cross-section measurements from MINERvA Thursday, 6 July 2017 12:15 (15 minutes)
Precision measurements of neutrino oscillation probabilities require an improved understanding of neutrino-nucleus interactions. MINERvA is a neutrino scattering experiment at Fermilab that utilizes the intense neutrino beam from the NuMI beam-line and a finely segmented scintillator based tracking detector to measure neutrino cross sections on various nuclear targets. MINERvA has published results using its low-energy data sets and is presently taking NOvA-era medium energy data. These results cover both exclusive and inclusive channels for muon and electron neutrino and anti-neutrino interactions. A summary of recent results from MINERvA will be pre- sented.
Experimental Collaboration MINERvA
Primary author: BODEK, Arie Presenters: BODEK, Arie; BODEK, Arie (University of Rochester (US)) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 585 EPS-HEP 2017 / Report of Contributions A precise and high-quality determ …
Contribution ID: 744 Type: Parallel Talk
A precise and high-quality determination of αs(mZ) Friday, 7 July 2017 12:09 (13 minutes)
Starting from low energy hadronic input from the particle data book, we perform a non-perturbative lattice computation of running couplings up to scales of around 100GeV. The continuum limit is controlled inall stages. These non-perturbative computations are performed in the three-flavor theory, yielding Λ(3) with around 4% precision. Matching accross flavor thresholds with 4-loop perturbation theory then yields (5) αs (mZ ) with sub-percent precision where an error estimated as the contribution of the two highest orders of perturbation theory is a small component in the overall error budget.
Experimental Collaboration
Primary authors: FRITZSCH, Patrick (CERN); RAMOS MARTINEZ, Alberto (CERN); SIMMA, Hubert (DESY); BRUNO, Mattia; DALLA BRIDA, Mattia (DESY - Zeuthen); SOMMER, Rainer Paul (DESY); SCHAEFER, Stefan (Deutsches Elektronen-Synchrotron Campus Zeuthen (DE)); SINT, Stefan (Trinity College Dublin (IE)); KORZEC, Tomasz Presenter: FRITZSCH, Patrick (CERN) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 586 EPS-HEP 2017 / Report of Contributions 3D-Printable Experiments in CER …
Contribution ID: 745 Type: Parallel Talk
3D-Printable Experiments in CERN’s S’Cool LAB Saturday, 8 July 2017 10:15 (15 minutes)
S’Cool LAB (http://cern.ch/s-cool-lab) is an international out-of-school hands-on particle physics learning laboratory at CERN, Geneva, Switzerland. It aims to give an insight into the working methods, technologies, and research of the world’s largest particle physics laboratory and to make CERN’s physics and technologies understandable for high-school students through hands-on ex- perimentation. In 2016, almost 6000 high-school students and their teachers from more than 30 different countries took part in hands-on workshops in S’Cool LAB. The topic of particle physics is rarely addressed in high-school curricula. One of the reason citedby teachers is a lack of suitable classroom experiments, especially because the high-tech equipment used in today’s particle physics experiments is too expensive for standard high schools. Well- equipped out-of-school learning places like S’Cool LAB can close this gap and provide hands-on experience for visiting students. In addition to workshops on-site, the S’Cool LAB team is develop- ing low-cost do-it-yourself equipment, which will hopefully support teachers in their challenging endeavour of introducing particle physics in their own classroom. 3D printing technology in particular has the potential to revolutionize the way physics is taught, because it makes it much easier to design and produce customized parts for school experiments or to build new prototypes. Using this technology, many hands-on experiments suddenly become affordable and easily available.
In this talk, we will present S’Cool LAB and its offers for schools from around the world. Wewill also present two 3D-printable hands-on experiments, a functional model of the toroidal ATLAS magnet system and a particle trap, and discuss their educational use.
Experimental Collaboration
Primary authors: WOITHE, Julia (CERN); BROWN, Alex (Universite de Geneve (CH)); FEIST- MANTL, Alexandra (University of Vienna (AT)); KELLER, Oliver Michael (CERN); Dr SCHMELING, Sascha (CERN)
Presenter: WOITHE, Julia (CERN) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 587 EPS-HEP 2017 / Report of Contributions Extreme Energy Events Project: c …
Contribution ID: 746 Type: Poster Presentation
Extreme Energy Events Project: construction of the detectors
The Extreme Energy Events (E.E.E.) experiment is a strategic project of Centro Fermi dedicated to the study of extreme energy cosmic rays. In particular it exploits a network of muon tracking telescopes constituted by three large area (2x2 vm^2) Multigap Resistieve Plate Chambers (MRPC). These detectors are used in many experiments due to its excellent efficiency and time resolution. The telescopes are GPS synchronized and are optimized to detect and track the muonic component of extensive air showers initiated by the interaction of primary cosmic rays with the Earth atmo- sphere. The E.E.E. Project has an innovative outreach approach: high school students are directly involved in the experiment and they play a primary role. The detectors are indeed built at CERN by teams of Italian High School students and teachers, under the supervision of researcher of various institutions (Centro Fermi, CERN, INFN). The con- struction takes five days during which each team school build the three detectors needed fortheir telescope. During this phase they learn how it is possible to build a particle detector using com- mon materials such as glass, plastic and fishing lines. After construction the detectors are brought in Italy and installed inside their school. Nowadays more than 50 telescopes are installed mostly inside high schools distributed over the whole Italy. After the installation they participate directly to the operation, monitoring of the telescope and to the data analysis by means of masterclasses properly designed. The E.E.E. Project is still expanding with the aim of enlarging the network and involve more schools in the E.E.E. network.
Experimental Collaboration
Primary author: CARNESECCHI, Francesca (Universita e INFN, Bologna (IT)) Presenter: CARNESECCHI, Francesca (Universita e INFN, Bologna (IT)) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 588 EPS-HEP 2017 / Report of Contributions M31 gamma ray emission - a closer …
Contribution ID: 748 Type: Parallel Talk
M31 gamma ray emission - a closer look at different explanations Thursday, 6 July 2017 15:06 (18 minutes)
A new measurement of a spatially extended gamma-ray signal from the center of M31 was published recently, reporting that the emission broadly resembles the so-called Galactic center excess of the Milky Way (Ackermann et al. 2017, arXiv:1702.08602). In this talk we discuss the possibilities that the signal originates from a population of millisecond pulsars, or alternatively the annihilation of dark matter particles. As an astrophysical interpretation in terms of millisecond pulsars appears viable, we derive upper limits on the annihilation cross section in the b¯b/τ −τ +−channel of Weakly Interacting Massive Particles (WIMPs) in a mass range from 1 GeV to 10 TeV, taking into consideration different spatial dark matter density profiles and including the effect of substructure and adiabatic contraction.
Experimental Collaboration
Primary author: ECKNER, Christopher (University of Nova Gorica) Co-author: THE FERMI LAT COLLABORATION, on behalf of Presenter: ECKNER, Christopher (University of Nova Gorica) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 589 EPS-HEP 2017 / Report of Contributions Euclid Mission
Contribution ID: 749 Type: Parallel Talk
Euclid Mission Friday, 7 July 2017 15:00 (15 minutes)
The Esa satellite Euclid will launch in 2020. It will observe 15000deg2 of the darkest skywithhis visible imager and his near-IR photometer and spectrograph. The core science goal of the mission is to measure the evolution of the expansion oftheuniverse up to redshift 2 in order to characterise deviations from the concordance LambdaCDM model, determine the evolution properties of dark energy and test GR. To do so, Euclid will map the distribution of matter in the universe using 2 main probes: Weak gravitational lensing, measuring the gravitationally induced distortion of the apparent shapes of about one billon of galaxies, and Galaxy Clustering (BAO and RSD), using several tens of million of spectroscopic redshift determinations. I will present the main objectives of the mission, his forecasted efficiency, and give an update of its current status.
Experimental Collaboration Euclid consortium
Primary author: Mr BENABED, karim (Institut d’Astrophysique de Paris - CNRS/UPMC) Presenter: Mr BENABED, karim (Institut d’Astrophysique de Paris - CNRS/UPMC) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 590 EPS-HEP 2017 / Report of Contributions Radiation studies on resistive bulk- …
Contribution ID: 750 Type: Parallel Talk
Radiation studies on resistive bulk-micromegas chambers at the CERN Gamma Irradiation Facility Friday, 7 July 2017 12:26 (16 minutes)
With the growing diffusion of resistive Micromegas detectors in HEP experiments the studyof long-term aging behaviour is becoming more and more relevant. Two resistive bulk-Micromegas detectors were installed in May 2015 at the CERN Gamma Irradia- tion Facility exposed to an intense gamma irradiation with the aim to study the detector behavior under high irradiation and the long-term aging. The detectors have an active area of 10x10 2, readout strip pitch of 400 µm, amplification gap of 128 µm and drift gap of 5 mm. The desired accumulated charge of more than 0.2C/cm2 has been reached for one of the chambers, equivalent to 10 years of HL-LHC operation. The efficiency, amplification, and resolution ofthe Micromegas after this long-term irradiation period will be compared with the performance ofa non irradiated detector.
In addition, the latest results of the measured particle rate as a function of the amplification voltage will be presented and compared with those obtained in 2015.
Experimental Collaboration
Primary authors: ALVAREZ GONZALEZ, Barbara (CERN); BORTFELDT, Jona (CERN); FA- RINA, Edoardo Maria (Universita e INFN, Pavia (IT)); IENGO, Paolo (CERN); SAMARATI, Jerome (CERN); SEKHNIAIDZE, Givi (Universita e INFN, Napoli (IT)); SIDIROPOULOU, Ourania (Bayerische Julius Max. Universitaet Wuerzburg (DE)); WOTSCHACK, Joerg (Aristotle University of Thessaloníki (GR))
Presenter: ALVAREZ GONZALEZ, Barbara (CERN) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 591 EPS-HEP 2017 / Report of Contributions Scheming in the SMEFT
Contribution ID: 751 Type: Parallel Talk
Scheming in the SMEFT Thursday, 6 July 2017 12:15 (15 minutes)
We discuss the constraints on the Standard Model Effective Field Theory inferred from global fits to electroweak data. In particular, we focus on two unconstrained combinations of Wilson coeffi- cients that are present when the analysis is restricted to measurements of ψψ¯ → ψψ¯ scatterings. We show how these unconstrained directions arise due to a reparameterization invariance that characterizes ψψ¯ → ψψ¯ processes but is not respected in ψψ¯ → ψψ¯ ψψ¯ scatterings. Finally, we demonstrate that this invariance is independent of the choice of the input parameters, comparing the results obtained in the {αˆem, mˆ Z , GˆF } input scheme with those of a {mˆ W , mˆ Z , GˆF } scheme, which we develop here. The talk is based on hep-ph/1701.06424.
Experimental Collaboration
Primary authors: BRIVIO, Ilaria (University of Copenhagen); TROTT, Michael Robert (University of Copenhagen (DK))
Presenter: BRIVIO, Ilaria (University of Copenhagen) Session Classification: Top and electroweak
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 592 EPS-HEP 2017 / Report of Contributions Single Top and Dark Matter: Two …
Contribution ID: 752 Type: Parallel Talk
Single Top and Dark Matter: Two is not always better than one Thursday, 6 July 2017 16:45 (15 minutes)
To date, only two modes of production at hadron colliders of dark matter through new scalar or pseudoscalar mediators have been considered in the existing literature: pairs of dark matter particles produced through top quark loops with an associated hadronic jet in the event (monojet), and production of dark matter with pairs of heavy flavoured top or bottom quarks. We present a third, previously overlooked channel, which consists of dark matter production in association with a single top quark.
In spite of a generally lower production cross section at LHC when compared to the associated top- pair channel, non-flavour violating single top quark processes are kinematically favored andcan greatly increase the sensitivity to these models. We will show that including dark matter produc- tion in association with a single top quark through scalar or pseudoscalar mediators significantly improves the current searches. In particular, the exclusion limit with the available data set by the LHC searches for dark matter and heavy flavours can be substantially improved from 30% toup a factor 2 depending on the mass assumed for the mediator particle. We expect that, with a dedicated event selection, the single top and dark matter production mode would demonstrate its full potential, and become the leading channel in Run II and future LHC searches.
Experimental Collaboration
Primary author: ZUCCHETTA, Alberto (Universitaet Zuerich (CH)) Co-authors: PINNA, Deborah (Universitaet Zuerich (CH)); CANELLI, Florencia (Universitaet Zuerich (CH)); BUCKLEY, Matthew (Rutgers University) Presenter: ZUCCHETTA, Alberto (Universitaet Zuerich (CH)) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 593 EPS-HEP 2017 / Report of Contributions Search for SM VH -> bb with the …
Contribution ID: 753 Type: Poster Presentation
Search for SM VH -> bb with the ATLAS detector
During Run-1 of the Large Hadron Collider, a particle consistent with the Standard Model Higgs boson was observed coupling directly to the leptonic and bosonic sectors of the Standard Model. The decay of the Standard Model Higgs to bbbar is the most commonly occurring decaymode, with a branching fraction of approximately 58%. Probing this decay is vital to furthering our understanding of the Standard Model. Due to the large multijet background, the direct observation of H → bbbar in the gluon fusion channel is very challenging. Instead, looking for the associated production of a Higgs with a vector boson (W/Z), and triggering on leptonic decays of the vector boson provides an effective way to trigger on the H → bbar decays and reduce the overwhelming multijet background. The latest results of this analysis will be presented, which provides oneof the most sensitive searches for H → bbbar decays.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: BELL, Andrew Stuart (University of London (GB)) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 594 EPS-HEP 2017 / Report of Contributions Combination of Higgs boson meas …
Contribution ID: 754 Type: Poster Presentation
Combination of Higgs boson measurements
Combined measurements of Higgs boson production cross sections and branching fractions are presented using the H->yy and H->ZZ->4l decay channels, based on 36.1 fb−1 of proton-proton collision data recorded by the ATLAS experiment at the LHC at sqrt(s)= 13 TeV. Results are pre- sented for the individual production processes of gluon fusion, vector-boson fusion, WH, ZH, and ttH, and for kinematic subdivisions of these processes using stage 1 of the simplified templatecross section framework. The ratios of the extracted Higgs boson couplings to their SM predictions, as well as constraints on coefficients of dimension-6 operators of an effective field theory, arealso characterized.
Experimental Collaboration ATLAS
Primary author: ROZEN, Yoram (Technion (IL)) Presenter: FENG, Eric (CERN) Session Classification: Poster session
Track Classification: Higgs and New Physics
October 6, 2021 Page 595 EPS-HEP 2017 / Report of Contributions Full simulation study of the proces …
Contribution ID: 755 Type: Poster Presentation
Full simulation study of the process e+e− → b¯b at \sqrt(s) = 250 GeV at the ILC
The heavy quark doublet plays a central role in the quest for new physics. The complementary between studies of electroweak top quark production and bottom quark production is therefore intuitively clear and pointed out in the literature. Let us remind that the tension between the LEP b measurement and the Standard Model prediction of the forward-backward asymmetry Afb is still one of the unsolved questions in the field and may be interpreted as a first manifestation ofnew physics in the heavy quark sector. The process e+e− → b¯b at the ILC offers a unique opportunity for a final word on the tension. Polarised beams allow for a large disentangling of the coupling constants or form factors that govern the γ/Z b¯b vertex.
The contribution will present a detailed simulation study of the process e+e− → b¯b at 250\, GeV with the ILD Detector. Besides the phenomenological implications, the contribution will demon- strate that with a careful analysis of the final state the charge of the b-quarks can be determined on an event-by-event basis with the ILD Detector. Such a capability is unprecedented by past and present particle physics experiments.
Experimental Collaboration ILD Collaboration
Primary authors: BILOKIN, Sviatoslav (Universite de Paris-Sud 11 (FR)); RICHARD, Francois (LAL); POESCHL, Roman (Universite de Paris-Sud 11 (FR)) Presenter: BILOKIN, Sviatoslav (Universite de Paris-Sud 11 (FR)) Session Classification: Poster session
Track Classification: Top and Electroweak Physics
October 6, 2021 Page 596 EPS-HEP 2017 / Report of Contributions Status and recent results of the Da …
Contribution ID: 756 Type: Parallel Talk
Status and recent results of the Dark Energy Survey Friday, 7 July 2017 14:45 (15 minutes)
The Dark Energy Survey (DES) is a large galaxy survey designed to address the fundamental ques- tion of the accelerating expansion of the universe and uncover the nature of the dark energy. It started the data taking in 2013, providing high quality imaging for 1/8 of the sky. The talk will present the current status of the project and the most recent results, mainly based on data from the first season of observations, where an exhaustive analysis for the control of systematic effects has been performed.
Experimental Collaboration DES (Dark Energy Survey)
Primary author: Dr SANCHEZ, Eusebio (CIEMAT) Presenter: Dr SANCHEZ, Eusebio (CIEMAT) Session Classification: Cosmology, dark energy, gravitational waves
Track Classification: Cosmology, Dark Energy, Gravitational Waves
October 6, 2021 Page 597 EPS-HEP 2017 / Report of Contributions A Summary of Recent Updates in …
Contribution ID: 757 Type: Parallel Talk
A Summary of Recent Updates in the Search for Cosmic Ray Sources using the IceCube Detector Thursday, 6 July 2017 17:34 (18 minutes)
The IceCube detector has observed the first clear detection of a diffuse astrophysical high energy neutrino flux, however, the sources for these neutrinos have yet to be found. Hadronic interac- tions around cosmic ray accelerators result in both high energy gamma and neutrino fluxes for neutral and charged pion decays respectively. Observing cosmic ray sources with neutrinos pro- vides unique evidence of the hadronic nature of these sources. Recently there have been many analyses from IceCube using multiple years of data for the detector in order to establish a neu- trino source. These searches involve looking for a significant clustering of neutrinos from anydi- rection or a strong correlation with a known source observed by other messengers also expected to emit a neutrino flux. These searches range from stacking searches involving populations ofsim- ilar sources such as active galactic nuclei, to time-dependent searches targeting individual sources when they are in flaring states. We present here the most recent updates in the search for sources of extraterrestrial neutrinos using the latest methods and source information.
Experimental Collaboration IceCube
Primary authors: CARVER, Tessa Lauren (Universite de Geneve (CH)); MONTARULI, Teresa (Universite de Geneve (CH))
Presenter: CARVER, Tessa Lauren (Universite de Geneve (CH)) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 598 EPS-HEP 2017 / Report of Contributions Dark Sector Physics with Belle II
Contribution ID: 758 Type: Parallel Talk
Dark Sector Physics with Belle II Thursday, 6 July 2017 16:30 (15 minutes)
The next-generation B-factory experiment Belle II at the upgraded KEKB accelerator, SuperKEKB, will start physics data taking in 2018. It is an asymmetric e+e- collider that will operate with 40x the instantaneous luminosity of KEKB/Belle and aims to collect 50 times more data in total.
Belle II offers the possibility to search for a large variety of dark sector particles in the GeVmass range complementary to LHC and dedicated low energy experiments. These searches will profit both from the very large dataset that will be acquired by the Belle II experiment, and from specifi- cally designed triggers for the early running of Belle II. This talk will review planned dark sector searches with a focus on the discovery potential of the first data.
Experimental Collaboration Belle II
Primary author: PERUZZI, Ida Marena (Laboratori Nazionali di Frascati dell’INFN) Presenter: FERBER, Torben (University Of British Columbia) Session Classification: Dark matter
Track Classification: Dark Matter
October 6, 2021 Page 599 EPS-HEP 2017 / Report of Contributions CP Violation sensitivity at the Bell …
Contribution ID: 762 Type: Parallel Talk
CP Violation sensitivity at the Belle II Experiment Friday, 7 July 2017 17:45 (15 minutes)
The measurement of the time-dependent CP violation parameters for B-meson decays iscrucial for tightening the constraints on the unitarity triangle and for the search of new physics beyond the Standard Model. A clean environment for the study of B decay channels is provided by B-factories. With a design luminosity of 8 · 10^35 cm^−2s^−1, leading ultimately to an integrated luminosity beyond 50 ab^−1, the new B-factory SuperKEKB will exceed the record instantaneous luminosity of its predecessor KEKB by a factor of 40. The new Belle II detector will exploit the expected high statistics data sample thanks to a major upgrade of the tracking system, including a novel pixel vertex detector in its innermost part. Additionally, the detector capabilities will be complemented by substantial improvements in the reconstruction software.
We develop a strategy for CP violation analysis in order to maximally exploit the new data set and to characterize the sensitivity of Belle II for various benchmark B decay channels.
Experimental Collaboration Belle II
Presenters: MORDA, Alessandro (CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France); MORDÀ, Alessandro (INFN - National Institute for Nuclear Physics) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 600 EPS-HEP 2017 / Report of Contributions Measurement of CKM parameters …
Contribution ID: 763 Type: Parallel Talk
Measurement of CKM parameters at Belle II Thursday, 6 July 2017 18:15 (15 minutes)
The Belle II experiment is a substantial upgrade of the Belle detector; it will operate attheSu- perKEKB energy-asymmetric e+e− collider. The detector is in its final phase of construction and the accelerator has successfully completed the first phase of commissioning. The design luminos- ity is 8×1035cm−2s−1, and the Belle II experiment aims to record 50 ab−1 of data, a factor of 50 more than the Belle experiment. We report our prospects for measuring the CKM angle gamma and observables in semileptonic B meson decays linked to the matrix elements Vcb and Vub. The CKM angle gamma is the least well known of the angles of the unitarity triangle andtheonly one that is accessible with tree-level decays in a theoretically clean way. The key method to mea- sure gamma is through the interference between B^+ to D^0 K^+ and B^+ to \overline{D}^0 K^+ decays which occur if the final state of the charm-meson decay is accessible to both theD^0and \overline{D}^0 mesons. To achieve the best sensitivity, a large variety of D and B decay modes is required; the Belle II experiment has the advantage that almost all final states can be reconstructed, including those with photons.
The measurements of rates and other observables in CKM favoured or suppressed semileptonic B meson decays to light leptons (electron and muon) and to the tau lepton. provide a gateway to fundamental parameters of the Standard Model, such as Cabibbo-Kobayashi-Maskawa matrix elements Vcb and Vub and are sensible to lepton flavour universality violation from physics beyond the Standard Model.
Experimental Collaboration Belle II
Presenter: KOMAROV, Ilya (Ecole Polytechnique Federale de Lausanne (CH)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 601 EPS-HEP 2017 / Report of Contributions Search for sterile neutrinos at the …
Contribution ID: 764 Type: Parallel Talk
Search for sterile neutrinos at the DANSS experiment Friday, 7 July 2017 10:00 (15 minutes)
DANSS (JINR, Dubna and ITEP, Moscow) is a one cubic meter highly segmented solid scintillator detector. It consists of 2500 scintillator strips (100x4x1 cm3), covered with gadolinium loaded reflective coating and read out by SiPMs via wave length shifting fibers. Groups of 50 strips are also read out by conventional PMTs. DANSS is placed under a 3 GW reactor at the Kalinin NPP (Russia) on a movable platform. The distance from the reactor core center canbe changed from 10.7m to 12.7m. The reactor core and other materials provide about 50 mwe shielding against cosmics, which reduces the background drastically. DANSS detects about 5000 Inverse Beta Decay events per day with a background from cosmic muons of about 2.5% only. Results based on more than 6 months of data taking will be presented including reactor off periods. This data set provides sensitivity to a large range of sterile neutrino parameters. Comparison of the measured positron spectrum with Monte Carlo predictions will be also presented.
Experimental Collaboration DANSS
Presenter: Prof. DANILOV, Mikhail (National Research Nuclear University MEPhI (RU)) Session Classification: Neutrino physics
Track Classification: Neutrino Physics
October 6, 2021 Page 602 EPS-HEP 2017 / Report of Contributions Studies of missing energy decays o …
Contribution ID: 765 Type: Parallel Talk
Studies of missing energy decays of B meson at Belle II Thursday, 6 July 2017 12:30 (15 minutes)
The Belle II experiment at the SuperKEKB collider is a major upgrade of the KEK “B factory” facility in Tsukuba, Japan. The machine is designed for an instantaneous luminosity of 8x10^35 cm^-2s^- 1, and the experiment is expected to accumulate a data sample of about 50 ab^-1 in five years of running. With this amount of data, decays sensitive to physics beyond the Standard Model can be studied with unprecedented precision. One promising set of modes are physics processes with missing energy such as B^+ to tau^+ nu, B to D^() tau nu, and B to K^() nu nu-bar decays.
The B–> K^() nu nu-bar decay provides one of the cleanest experimental probes of the flavour-changing neutral current process b–>s nu nu-bar, which is sensitive to physics beyond the Standard Model. How- ever, the missing energies of the two neutrinos in the final state makes the measurement challenging and requires full reconstruction of the spectator B meson in e^+ e^—> Upsilon(4S)–> BBbar events. Observation of the B–> K^() nu nu-bar decay will become possible with the large data set to be collected by the upgraded Belle II experiment running at the Super-KEKB accelerator in Japan. A challenge of this analysis will be understanding and suppressing backgrounds. This talk discusses such backgrounds and the expected sensitivity of Belle II for this rare decay.
Experimental Collaboration Belle II
Presenter: MANONI, Elisa (Universita e INFN, Perugia (IT)) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 603 EPS-HEP 2017 / Report of Contributions Charm physics prospects at Belle II
Contribution ID: 766 Type: Poster Presentation
Charm physics prospects at Belle II
Belle II is a major upgrade of the Belle experiment, and will operate at the B-factory SuperKEKB, located at the KEK laboratory in Tsukuba, Japan. Belle II will be an ideal laboratory to study the properties of the charm quark, collecting more than 5x10^10 ccbar events with a total integrated luminosity of about 50 ab^-1 in the next decade.
We will discuss the expected sensitivity of Belle II for CPV measurements and New Physics searches in the charm sector. Estimates for several decay channels will be presented, in particular for those with lepton-neutrino, neutral pions and other neutrals in the final state. Alternative flavour- tagging techniques has been developed, a novel flavour-tagging method of prompt D0s will be presented. Finally, we will present the impact of the improved tracking at Belle II, which will allow to significantly increase the precision of time-dependent measurements.
Experimental Collaboration
Presenter: DE PIETRO, Giacomo (INFN and Univ. Roma Tre) Session Classification: Poster session
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 604 EPS-HEP 2017 / Report of Contributions Bringing students closer to high e …
Contribution ID: 767 Type: Poster Presentation
Bringing students closer to high energy physics: Fine arts and dance
Scientific developments have seen reality dissolved into smaller and smaller invisible particles that the physicist has to make visible. This process is mirrored by the artist attempting toex- press thoughts and emotions through the manipulation of materials in the case of fine arts, or the movements of the human body in the case of dance. Taking the same journey from something hidden to something revealed. We present two new activities developed by artists, dancers, and particle physicists to enthuse students regarding STEM subjects, stimulate inquiry, and enhance learning. The first involves experimenting with ways of visualising using mark-making, simple three-dimensional materials, photography and film to explore the intriguing connections between art and science, while the second employs dance improvisation, rhythm, and music. These projects have been developed in the context of and supported by the CREATIONS initiative.
Experimental Collaboration
Primary authors: TRAVAGLINO, Fanny; ANDREWS, Ian; FOTINAKI, Katerina; NIKOLOPOULOS, Konstantinos (University of Birmingham (GB)); PARDALAKI, Maria; PAVLIDOU, Maria (University of Birmingham); FORTES MAYER, Sarah Presenter: NIKOLOPOULOS, Konstantinos (University of Birmingham (GB)) Session Classification: Poster session
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 605 EPS-HEP 2017 / Report of Contributions Constraining the Flavor Structure …
Contribution ID: 768 Type: Parallel Talk
Constraining the Flavor Structure of Lorentz Violation Hamiltonian with the Measurement of Astrophysical Neutrino Flavor Compositions Thursday, 6 July 2017 17:52 (18 minutes)
We study Lorentz violation effects to flavor transitions of high energy astrophysical neutrinos. It is shown that the appearance of Lorentz violating Hamiltonian can drastically change the flavor transition probabilities of astrophysical neutrinos. Predictions of Lorentz violation effects to flavor compositions of astrophysical neutrinos arriving on Earth are compared with IceCube flavor composition measurement which analyzes astrophysical neutrino events in the energy range between 25 TeV and 2.8 PeV. Such a comparison indicates that the future IceCube-Gen2 will be able to place stringent constraints on Lorentz violating Hamiltonian in the neutrino sector. We work out these expected constraints for different flavor structures of Lorentz violating Hamiltonian. In some cases these expected constraints can improve upon the current constraints obtained from other types of experiments by more than two orders of magnitudes.
Experimental Collaboration
Primary authors: Prof. LAI, Kwang-Chang (Chang Gung University, Taiwan); Mr LAI, Wei-Hao (National Chiao-Tung University); Prof. LIN, Guey-Lin (National Chiao-Tung University, Taiwan)
Presenter: Prof. LIN, Guey-Lin (National Chiao-Tung University, Taiwan) Session Classification: Astroparticle physics
Track Classification: Astroparticle Physics
October 6, 2021 Page 606 EPS-HEP 2017 / Report of Contributions A Systematic Study of Discriminat …
Contribution ID: 769 Type: Parallel Talk
A Systematic Study of Discriminators between New Physics and Standard Model in b → s transitions Thursday, 6 July 2017 10:45 (15 minutes)
Measurements of b → s transitions in semi-leptonic, leptonic and radiative decays of the the B meson has come of age with several collider and flavour-factory experiments focusing on these over the past years. While the inclusive and leptonic channels have been computed to relatively high precision, the exclusive decays are fraught with uncertainties stemming from both non- factorizable and factorizable parts of the matrix element. Since all these modes test overlap- ping components of a common short distance structure and are hence correlated, the uncertain- ties in the matrix element make it difficult to rightfully claim the presence or absence ofnew physics contributions through a global analysis of these observables. Following our previous work (arXiv:1512:07157), we expand our analysis to include all measured decay modes and try to estab- lish discriminators between possible contributions from new physics and those from the matrix elements which have a richer helicity structure and should follow a signature kinematic distribu- tion.
Experimental Collaboration
Primary authors: CIUCHINI, Marco (INFN Sezione di Roma Tre); Mr COUTINHO, António (Uni- versità Roma Tre); FEDELE, Marco (INFN RM1); FRANCO, Enrico (INFN (Istituto Nazionale Fisica Nucleare)); Dr PAUL, Ayan (INFN, Sezione di Roma); SILVESTRINI, Luca (INFN Rome); VALLI, Mauro (INFN Rome)
Presenter: VALLI, Mauro (INFN Rome) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 607 EPS-HEP 2017 / Report of Contributions SU(3)f Breaking through Final Stat …
Contribution ID: 771 Type: Parallel Talk
SU(3)f Breaking through Final State Interactions and CP Asymmetries in D → PP Decays Friday, 7 July 2017 17:30 (15 minutes)
The question of the validity of analyzing charmed meson decays to pairs of mesons withinthe SU(3)F framework has been long and often debated. There are convincing arguments that small breaking of this symmetry can accommodate for the current experimental data on branching frac- tions of D → PP (P = π, K, η). However, the uncertainty in the evaluation of the amplitudes in these modes renders it quite impossible to justify with complete authority the physical inter- pretations of the parameters extracted from experimental data. In our current work we build a parametrization of perturbative SU(3)F breaking in an attempt to incorporate final state interac- tions through isospin specific phases and small breaking in the amplitudes. We use a reduced menu 0 ± ′ of decay modes consisting of the D and D(s) initial states and excluding η/η in the final states in an initial attempt to explain the branching fractions data with our parametrization. Wealso incorporate CP non-conservation in our parametrization which requires the knowledge of poorly dir estimated penguin amplitudes. We attempt at estimating ∆ACP, and build its correlation with several other CP asymmetries using our parametrization making predictions which are testable at Belle II and LHCb.
Experimental Collaboration
Primary authors: BUCCELLA, Franco (Unknown); FRANCO, Enrico (INFN (Istituto Nazionale Fisica Nucleare)); PAUL, Ayan (INFN, Sezione di Roma); SANTORELLI, Pietro; SILVESTRINI, Luca (INFN Rome)
Presenter: PAUL, Ayan (INFN, Sezione di Roma) Session Classification: Flavour and symmetries
Track Classification: Flavour Physics and Fundamental Symmetries
October 6, 2021 Page 608 EPS-HEP 2017 / Report of Contributions Measurement of electron antineut …
Contribution ID: 772 Type: Poster Presentation
Measurement of electron antineutrino oscillation based on 1230 days of operation of the Daya Bay experiment
Utilizing powerful nuclear reactors as anti-neutrino sources, high mountains to provide ample shielding from cosmic rays in the vicinity, and functionally identical detectors with large tar- get volume for near-far relative measurement, the Daya Bay Reactor Neutrino Experiment has achieved unprecedented precision in measuring the neutrino mixing angle θ13 and the neutrino | 2 | mass squared difference mee . I will report the latest Daya Bay results on neutrino oscillations, based on more than 2.5 million ν¯e inverse beta-decay interactions observed from the combina- tion of 217 days of operation of six antineutrino detectors with a subsequent 1013 days using the complete configuration of eight detectors.
Experimental Collaboration The Daya Bay Collaboration
Primary authors: Prof. CHU, Ming-chung (The Chinese University of Hong ;Kong) ON BEHALF OF THE DAYA BAY COLLABORATION
Presenter: Prof. CHU, Ming-chung (The Chinese University of Hong Kong) Session Classification: Poster session
Track Classification: Neutrino Physics
October 6, 2021 Page 609 EPS-HEP 2017 / Report of Contributions The new CGEM inner tracker and…
Contribution ID: 773 Type: Parallel Talk
The new CGEM inner tracker and the custom TIGER ASIC for the BESIII experiment Thursday, 6 July 2017 18:15 (15 minutes)
A new detector exploiting the technology of Cylindrical Gas Electron Multipliers (CGEM) has been proposed to replace the innermost tracker chamber of BESIII (Beijing Electron Spectrometer) ex- periment, which is suffering from aging due to the high luminosity of Beijing Electron Positron Collider (BEPCII). The CGEM Inner Tracker will deploy several new features w.r.t. other state-of-art GEM detectors. The µTPC and analog readout, using charge centroid method, will allow for a 130 µm spatialres- olution in a 1 T magnetic field, keeping the number of channels to a manageable number (about ten thousand while the digital readout would require 25000 channels). The channels are readout by TIGER (Torino Integrated GEM Electronics for Readout), acustom64- channel mixed-mode ASIC, providing time and charge measurements with a fully-digital output. The charge measurement is obtained either from the time-over-threshold or the 10-bit digitization of the peak amplitude of the signal. The time of the event is measured by quad-buffered, low- power TDCs, based on analog interpolation techniques. For µTPC readout, a time resolution of better than 5 ns is needed. A maximum event rate of 60 kHz (with a 4× safety factor) isforeseen per channel. In this presentation, an overview of TIGER characterization will be covered with a particular fo- cus on measurements to assess the functionality of the silicon and on first tests with the full-scale detector.
Experimental Collaboration BESIII Italian Collaboration, BESIIICGEM Consortium
Primary authors: GRECO, M. (INFN-Torino, University of Torino, Italy); ALEXEEV, M. (INFN-- Torino, University of Torino, Italy); BUGALHO, R. (PETSys Electronics, Portugal); CHAI, JY. (PoliTO, INFN-Torino, Italy; University of CAS, IHEP, China); COSSIO, F. (PoliTo, INFN-Torino, Italy); DA ROCHA ROLO, M. (INFN-Torino, Italy); DI FRANCESCO, A. (LIP, Portugal); GERTOSIO, M. (Univer- sity of Torino, INFN-Torino, Italy); LENG, CY. (PoliTO, INFN-Torino, Italy; University of CAS, IHEP, China); LI, HS. (INFN-Torino, Italy; IHEP, China); MAGGIORA, M. (INFN-Torino, University of Torino, Italy); MIGNONE, M. (INFN-Torino, Italy); RIVETTI, A. (INFN-Torino, Italy); VARELA, J. (PETSys Elec- tronics, LIP, Portugal); WHEADON , R. (INFN-Torino, Italy) Presenter: MARCELLO, S. (INFN-Torino, University of Torino, Italy) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 610 EPS-HEP 2017 / Report of Contributions Jet production at high precision us …
Contribution ID: 774 Type: Parallel Talk
Jet production at high precision using the CoLoRFulNNLO method Friday, 7 July 2017 10:30 (15 minutes)
We compute cross section for the production of three jets in electron-positron annihilation at next-to-next-to-leading order (NNLO) accuracy. We use a general subtraction scheme developed for computing QCD jet cross sections in perturbation theory. This method is implemented in the Monte Carlo for the CoLoRFulNNLO Subtraction Method (MCCSM) program that provides a general framework for computing QCD jet cross sections at NNLO accuracy, requiring only the implementation of the necessary squared matrix elements. We demonstrate the good numerical convergence of the MCCSM program by providing stable predictions over the whole kinematic range including small values of the jet resolution variable. We provide high-precision perturbative predictions for jet rates by matching the predictions at NNLO accuracy with cross sections obtained by resumming the leading and next-to-leading logarithms at all orders in perturbation theory for jets defined by the exclusive and inclusive Durham clustering algorithms. We also discussthe status of extending the method to jet hadroproduction.
Experimental Collaboration
Primary authors: TROCSANYI, Zoltan Laszlo (University of Debrecen (HU)); KARDOS, Adam (University of Debrecen); SOMOGYI, Gabor (University of Debrecen (HU)); Mr SZŐR, Zoltán (Univer- sity of Debrecen)
Presenter: TROCSANYI, Zoltan Laszlo (University of Debrecen (HU)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 611 EPS-HEP 2017 / Report of Contributions Development of the Diamond base …
Contribution ID: 775 Type: Poster Presentation
Development of the Diamond based Proton Beam Monitor for COMET Experiment
The COMET experiment searches for the muon-to-electron(µ − e) conversion with a sensitivity below 10−16 which is 10,000 times better than the present upper limit. This process is strictly forbidden in the standard model because of the lepton flavor conservation law. In contrast, its branching ratio can be sizable around 10−15 in many models of physics beyond the standard model (BSM). Therefore the discovery of the µ − e conversion should be unambiguous evidence of BSM. Since sufficient amount of muons can be collected owing to the world most powerful pulsed proton beam at J-PARC, the background suppression is the most important to achieve the target sensitiv- ity. In COMET, the measurement will be done between 500-1000 ns after coming the beam bunch to highly suppress the beam related prompt background. Even in this case, signals can be detected because of muon’s long life time (τµ ∼ 800 ns) in a muonic-atom in case of using aluminum. In this scheme, the “extinction factor”, (=(\#of residual protons between two bunches)/(\#of pro- tons in a bunch)), must be less than 10−10. To ensure such an extremely low extinction factor during the data taking, an innovative diamond detector will be adopted since it has high radiation tolerance to an intensive proton beam such as 1012 protons/sec, and a fast time response to identify a single proton after the prompt beam including 108 of protons. Recently, a prototype detector was developed based on a single-crystal diamond with a metal- insulator-metal type structure to perform the direct proton measurement inside the abort beam- line of J-PARC main ring. The installation was completed in last February and signals of secondary particles causedbybeam protons were observed in this April. In this spring, the direct beam measurement will be conducted with the high intensity pulsed pro- ton beam. In this presentation, the results of above measurement will be reported together with future prospects.
Experimental Collaboration COMET
Primary author: FUJII, Yuki (High Energy Accelerator Research Organization) Presenter: FUJII, Yuki (High Energy Accelerator Research Organization) Session Classification: Poster session
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 612 EPS-HEP 2017 / Report of Contributions Central-forward dijets in Pb-Pb co …
Contribution ID: 776 Type: Parallel Talk
Central-forward dijets in Pb-Pb collisions in high energy factorization Friday, 7 July 2017 16:45 (15 minutes)
We report on double inclusive jet production in Pb-Pb collision within newly constructed frame- work combining High Energy Factorization with mechanism for energy loss in Quark Gluon Plasma. The framework allows for exact treatment of kinematics of colliding partons andthere- fore to increase accuracy in studies of energy loss of jets in quark gluon plasma. Furthermore the chosen configuration of jets i.e. forward-central configuration allows for analysis of rapidity structure of quark gluon plasma.
Experimental Collaboration
Primary author: DEAK, Michal (Polish Academy of Sciences (PL)) Co-authors: KUTAK, Krzysztof (Instytut Fizyki Jadrowej Polskiej Akademii Nauk); TYWONIUK, Konrad (CERN)
Presenter: DEAK, Michal (Polish Academy of Sciences (PL)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 613 EPS-HEP 2017 / Report of Contributions Technological Prototypes and Res …
Contribution ID: 779 Type: Parallel Talk
Technological Prototypes and Result Highlights of Highly Granular Calorimeters Thursday, 6 July 2017 12:00 (15 minutes)
Following successful demonstrations of the potential of highly granular calorimeters by the CAL- ICE collaboration, the emphasis of current R&D has shifted to the next generation of prototypes. Optimized for Particle Flow Algorithms (PFA) which will achieve unprecedented jet energy reso- lution at future colliders, this new generation of CALICE calorimeters also addresses full system requirements such as compactness and low power consumption. These activities cover further de- velopments of the technological prototype of the RPC-based SDHCAL already tested in beams, the construction of a full technological prototype of the SiPM / scintillator - based Analog HCAL fol- lowing recent tests of smaller systems, and a second-generation SiW ECAL. Within these projects, large detector areas, automatic assembly and testing procedures and self-supporting mechanical structures are being developed. The detectors use a new generation of low noise, power-pulsed electronics with independent channels and zero suppression protocol as well as precise cell-by-cell time stamping. The prototypes will be instrumented with a common DAQ system to enable com- bined beam tests of several prototypes and have already successfully been operated with a newly developed monitoring and control system. This presentation will discuss the latest technological developments of these new calorimeter prototypes, and highlight areas of fruitful synergies with planned and ongoing upgrades of LHC experiments.
Experimental Collaboration CALICE
Primary author: GRENIER, Gerald (Institut de Physique Nucleaire de Lyon (IPNL)) Presenters: GRENIER, Gerald (Institut de Physique Nucleaire de Lyon (IPNL)); GRENIER, Gerald (Universite Claude Bernard-Lyon I (FR)) Session Classification: Detectors and data handling
Track Classification: Detector R&D and Data Handling
October 6, 2021 Page 614 EPS-HEP 2017 / Report of Contributions Jet production in pp and p-Pb colli …
Contribution ID: 781 Type: Parallel Talk
Jet production in pp and p-Pb collisions with the ALICE experiment at LHC Thursday, 6 July 2017 11:30 (15 minutes)
Produced in a hard scattering an energetic parton will lead to a parton shower which will befrag- menting into a hadronic spray of particles called jet. The mass of the jet is sensitive to the initial virtuality of the parton at the origin of the shower. The jet fragmentation functions and their moments, describe the momentum distribution of hadrons inside a reconstructed jet. Their mea- surement is important for understanding the mechanisms of parton fragmentation. Well defined jet shapes observables, preserving collinear and infrared safety, like the first radial moment or the jet constituent momentum dispersion provide complementary information on the fragmentation process and can be compared to perturbative QCD (pQCD) calculations. This comparison can also be made with measurements of the differential jet production cross sec tion and of jet properties in proton-proton (pp) collisions. Proton-Lead collisions allow to probe cold nuclear matter effects and both systems are also used as a reference to measurements of the properties of the medium created in Heavy Ion Collisions. The central barrel of the ALICE detector at the LHC has unique tracking capabilities enablingto measure charged particles down to transverse momenta as low as 150 MeV/c and provides particle identification (PID). Combining information from the ALICE Time Projection Chamber andfrom the Electromagnetic Calorimeters EMCAL/DCAL allows to precisely measure the jet energy.
An overview of recent results on jet physics in pp and p-Pb collisions from the ALICE experiment at the LHC will be presented. The results will be compared to pQCD calculations at leading and next-to-leading order.
Experimental Collaboration ALICE Collaboration
Presenter: SHABETAI, Alexandre (Centre National de la Recherche Scientifique (FR)) Session Classification: QCD and hadronic physics
Track Classification: QCD and Hadronic Physics
October 6, 2021 Page 615 EPS-HEP 2017 / Report of Contributions The Junior Community in ALICE
Contribution ID: 782 Type: Parallel Talk
The Junior Community in ALICE Friday, 7 July 2017 15:30 (15 minutes)
The junior community in ALICE at the LHC, consisting of early-career scientists, forms animpor- tant and active body within the collaboration. It organizes a rich program with analysis tutorials and physics publication discussions. It also provides a collegial atmosphere for junior scientists to present their work and have lively discussions. In addition, the group is a vital element for junior scientists to strengthen their professional network and actively maintain bonds with current and previous members. Any collaboration, including their decision-making bodies, can profit from the additional perspec- tive which diverse groups offer. Within ALICE, the early-career scientists are represented inboth its legislative and executive branches. A junior participant in every committee, formed to obtain input for various boards, ensures that junior viewpoints are taken into account. Such a junior representation is unique among the LHC experiments.
In this contribution, we discuss our experience with the junior community in ALICE from a junior and senior point of view. We present the various activities of this junior community and their positive impact on early-career scientists and the collaboration as a whole.
Experimental Collaboration ALICE Collaboration
Presenter: BECK, Hans (Ruprecht-Karls-Universitaet Heidelberg (DE)) Session Classification: Outreach, education, diversity
Track Classification: Outreach, Education, and Diversity
October 6, 2021 Page 616 EPS-HEP 2017 / Report of Contributions Measurements of vector meson ph …
Contribution ID: 783 Type: Parallel Talk
Measurements of vector meson photoproduction with ALICE in ultra-peripheral Pb-Pb collisions at sqrt(sNN) = 5.02 TeV Thursday, 6 July 2017 18:15 (15 minutes)
The intense photon fluxes of relativistic nuclei provide a possibility to study photonuclear and two-photon interactions in ultra-peripheral collisions (UPC) where the nuclei do not overlap and no strong nuclear interactions occur. The study of such collisions provides information about the initial state of nuclei (nPDF). Exclusive J/ψ production in UPC which is sensitive to the nuclear gluon distribution: first ALICE results from LHC Run 2 will be presented for this channel for both forward and mid-rapidity J/ψ. The increased statistics and the higher collision energy allows for a more detailed study of lower values of Bjorken-x.
The analysis of the γ + A → ρ0+A process in UPC is a tool to test the, so-called, black disk regime where the target nucleus appears like a black disk and the total ρ0+A cross section reaches it quantum mechanical limit. √ 0 ALICE reports new measurements of ρ photoproduction cross sections in Pb-Pb UPC at sNN = 5.02 TeV at mid-rapidity which are compared to predictions.
Experimental Collaboration ALICE Collaboration
Primary author: ALICE COLLABORATION Presenter: POZDNIAKOV, Valeri (Joint Institute for Nuclear Research (RU)) Session Classification: Heavy ion physics
Track Classification: Heavy Ion Physics
October 6, 2021 Page 617 EPS-HEP 2017 / Report of Contributions Neutral pion - hadron correlations …
Contribution ID: 784 Type: Parallel Talk
Neutral pion - hadron correlations in pp and Pb–Pb collisions measured at the ALICE experiment Friday, 7 July 2017 17:15 (15 minutes)
The study of the azimuthal correlation with π0 offers a powerful way to investigate the properties of strongly-interacting matter created in ultra-relativistic heavy-ion collisions. In this talk, we present the measurement of two-particle correlations of π0 trigger particles with associated√ charged particles versus azimuthal angle difference (∆φ) in pp and central Pb–Pb col- 0 lisions at sNN =2.76 TeV with the ALICE experiment. π are detected by the ALICE electro- magnetic calorimeter EMCal for transverse momenta 8 The extracted per-trigger yield modification factors (IAA) on the near and away side are compared with the expectations from theoretical models. The measurement is sensitive to the modifications of the medium modified fragmentation pattern in the QGP. Experimental Collaboration ALICE Collaboration Primary author: ALICE COLLABORATION Presenter: PENG, Xinye (Universita e INFN, Padova (IT)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 618 EPS-HEP 2017 / Report of Contributions Low latency gravitational wave se … Contribution ID: 786 Type: Parallel Talk Low latency gravitational wave searches for prompt multimessenger followups Friday, 7 July 2017 17:15 (15 minutes) The gravitational wave era has started with the detections of gravitational waves originated from the coalescences of black holes. This gives new challenges and interests to the multi-messenger approach, which aims to reach the extraordinary result of identifying the counterparts. In this talk, we review the gravitational wave low-latency algorithms used by the LIGO-Virgo collaboration. Those algorithms produce triggers within a few minutes of the arrival time at the detectors. The most significant triggers are shared with the electromagnetic partners (from radio to gamma-ray) as well as neutrino and high energy cosmic ray observatories. Experimental Collaboration LIGO-Virgo Primary author: DRAGO, Marco Presenter: DRAGO, Marco Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 619 EPS-HEP 2017 / Report of Contributions Jet production in Pb-Pb collisions … Contribution ID: 787 Type: Parallel Talk Jet production in Pb-Pb collisions in ALICE Friday, 7 July 2017 15:00 (15 minutes) High energy collisions of heavy nuclei permit the study of nuclear matter at temperatures and energy densities. Under these conditions the fundamental theory for strong interactions, QCD, predicts a phase transition to a plasma of quarks and gluons. This matter, called a Quark Gluon Plasma (QGP), has been studied experimentally for the last decade and has been observed to be a strongly interacting liquid with a low viscosity. High energy partons created early in the colli- sion interact with the QGP and provide unique probes of its properties. Studies of these partons through full jet reconstruction and high-momentum particles have demonstrated that the QGP is a strongly interacting, dense medium. Studies of jet-hadron correlations and jet structure can help understand the energy loss mechanism. We present measurements of jet spectra, jet structure, and jet-hadron correlations in Pb–Pb colli- sions and discuss the constraints these studies place on partonic energy loss mechanisms in the medium. Experimental Collaboration ALIE Collaboration Primary author: ALICE COLLABORATION Presenter: NATTRASS, Christine (University of Tennessee (US)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 620 EPS-HEP 2017 / Report of Contributions On the Coverage of the pMSSM by … Contribution ID: 788 Type: Parallel Talk On the Coverage of the pMSSM by Simplified Model Results Friday, 7 July 2017 15:45 (15 minutes) ATLAS and CMS have performed a large number of searches for physics beyond the Standard Model (BSM). The results of SUSY searches are typically interpreted in the context of Simplified Models. While mass limits obtained in this manner are highly model dependent, cross section up- per limits (or efficiency maps) may be used to obtain constraints on generic BSM scenarios with- out any further event and detector simulation. This procedure has been automatised in the public tool SModelS, which first decomposes the generic scenario into Simplified Model components that can then be tested directly against the results in the SModelS database. I will briefly introduce SModelS and then discuss how the coverage by Simplified Model results compares to what canbe obtained in a full simulation study for the example of the 19 parameter phenomenological MSSM (pMSSM). Considering all parameter points that ATLAS has tested in a comprehensive study (see arXiv:1508.06608), we find that about 50% of the points excluded by ATLAS can be excluded from Simplified Model constraints. This fraction could be improved by considering currently ‘miss- ing’ Simplified Model topologies and I will show examples of parameter space regions wherethe coverage is significantly improved if we add Simplified Model topologies not considered bytheex- periments. Finally we characterise scenarios that do not map onto Simplified Model components. Experimental Collaboration Primary author: LAA, Ursula (LPSC Grenoble) Co-authors: AMBROGI, Federico (Austrian Academy of Sciences (AT)); KRAML, Sabine (LPSC Grenoble); KULKARNI, Suchita (Austrian Academy of Sciences (AT)); Prof. LESSA, Andre (CCNH - Univ. Federal do ABC); Dr WALTENBERGER, Wolfgang (Austrian Academy of Sciences (AT)) Presenter: LAA, Ursula (LPSC Grenoble) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 621 EPS-HEP 2017 / Report of Contributions Experimental measurement of stro … Contribution ID: 789 Type: Poster Presentation Experimental measurement of strong enhancement of bremsstrahlung radiation by 120 GeV/c electrons in an oriented PWO crystal Since their invention, scintillator materials found many applications in physics. Several e.m. calorime- ters in HEP, e.g. in CMS, Fermi and Gamma-400, use crystal scintillators with high-Z elements as CsI and PWO. The impact of crystal orientation of scintillators is usually poorly considered, whereas infactthe influence of the crystalline structure on radiation and pair production in more usual crystals, such as Si and Ge, has been known since decades. Indeed, due to the interaction with the strong crys- talline field for small particle incidence angles with respect to crystal planes/axes, the radiation emitted by high-energy e± and pair production by photons may strongly increase as compared to an amorphous medium. Together these two processes substantially reduce the effective radiation length of the crystal, thus modifying the shower development. We report the experimental measurement of 120 GeV/c electron radiation enhancement in a 4 mm thick (0.45 X0) PWO crystal, carried on at the SPS-H4 line. The experimental results are in good agreement with simulations based on the Baier-Katkov method, which were recently validated in an experiment using a Si target 1. We measured the transition from a nearly single-photon emission, where the crystal axis was not oriented with the beam direction, to a continuous e.m. shower development for alignment with <001> PWO axis. We also analyzed the e− energy loss distribution under axial orientation, which peaks at more than 100 GeV, demonstrating a several- fold reduction of the effective radiation length. The observed effect can be exploited to reduce the shower dimension and leakage in HEPcalorime- ters based on crystals, for instance to measure the TeV-energy cosmic rays or to decrease the calorimeter dimension and provide high angular resolution in gamma-telescopes [2]. 1 L. Bandiera et al, PRL. 111 (2013) 255502 [2] V.G. Baryshevsky et al, NIMB in press http://doi.org/10.1016/j.nimb.2017.02.066 Experimental Collaboration Primary authors: BANDIERA, Laura (Universita di Ferrara & INFN (IT)); TIKHOMIROV, Victor (BSU); MAZZOLARI, andrea (INFN Ferrara); Mr ROMAGNONI, Marco (University of Ferrara and INFN); BERRA, Alessandro (Universita & INFN, Milano-Bicocca (IT)); PREST, Michela (Universita & INFN, Milano-Bicocca (IT)); VALLAZZA, Erik (Universita e INFN (IT)); DE SALVADOR, Davide (Universita e INFN (IT)); BAGLI, Enrico (Universita di Ferrara & INFN (IT)); Ms DURIGHELLO, Claudia (INFN); SYTOV, Alexei (Universita di Ferrara & INFN (IT)) Presenter: BANDIERA, Laura (Universita di Ferrara & INFN (IT)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 622 EPS-HEP 2017 / Report of Contributions EEE Project - Students from all pa … Contribution ID: 791 Type: Poster Presentation EEE Project - Students from all parts of peninsula collaborate to study cosmic rays Project Extreme Energy Events (EEE) – “La scienza nelle scuole” is an experiment dedicated to the study of high energy cosmic radiation, using detectors distributed over an area of more than half a million km2, from Geneva to Lampedusa. Data are taken simultaneously from about 40 telescopes. More than 40 billion particles have been registered up to now. Project was born in 2004 from an idea of Professor Antonino Zichichi, funded and operated by the Fermi Center in Rome in collaboration with CERN, INFN, and the Ministry of Education, with the aim to involve high school students in a real physics experiment. The Initiative has reached the goal of 100 participating educational institutes, with a support of 20-30 students per school. Half of these already hosts a detector, the others, waiting for a telescope, are involved in data taking and analysis together with twinned schools. The participation of students starts with the construction of the detectors at CERN, working with local researchers. After installation into school, they manage and monitor the operation ofthe telescope during the data taking, and intervene in case of failure. Students deepen their knowledge both about particle physics through targeted lessons and in spe- cific areas of data analysis with dedicated “master classes”. Periodically they attend seminars, open also to the citizens and sometime highlighted in newspapers, and to annual meetings between all schools involved and the Centro Fermi researchers coordinating the project. Since November 2016, there are monthly videoconferences opened to schools; more than 50 schools are connected simultaneously! In these meetings, students are updated on the latest news of the project and present their activities to the entire collaboration. In my presentation, I will examine the different ways of involvement of young people in the project and its impact on education and citizenship. Experimental Collaboration EEE Project Primary author: Dr GRAZZI, Stefano (Centro Studie e Ricerche ”Enrico Fermi”) Presenter: Dr GRAZZI, Stefano (Centro Studie e Ricerche ”Enrico Fermi”) Session Classification: Poster session Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 623 EPS-HEP 2017 / Report of Contributions The cylindrical drift chamber for t… Contribution ID: 793 Type: Poster Presentation The cylindrical drift chamber for the MEG II The MEG experiment, at the PSI in Switzerland, aims at searching the charged lepton flavor violat- ing decay µ+ → e+γ. MEG has already determined the world best upper limit on the branching ratio: BR<4.2×10−13@90\%CL with the full data set collected in the years 2009-2013.\\ The new positron tracker is a high transparency single volume, full stereo cylindrical DriftCham- ber (DC), immersed in a non uniform longitudinal B-field, co-axial to the muon beam line with length of 1.93 m , internal radius of 17 cm and external radius of 30 cm. It is composed of 10 con- centric layers, divided in 12 identical sector of 16 drift cells. The single drift cell is approximately square, with a 20 µm gold plated W sense wire surrounded by 40 µm silver plated Al field wires in a ratio of 5:1. For equalizing the gain of the innermost and outermost layers, two guard layers have been added at proper radii and at appropriate high voltages. The total number of wires amounts −3 to 12288 for an equivalent radiation length per track turn of about 1.45x10 X0 when the cham- ber is filled with an ultra-low mass gas mixture of helium and iso-butane. Due to thehighwire density (12wires/cm2), the use of the classical feed-through technique as wire anchoring system could hardly be implemented and therefore it was necessary to develop new wiring strategies. The number of wires and the stringent requirements on the precision of their position and on the uni- formity of the wire mechanical tension impose the use of an automatic system (wiring robot) to operate the wiring procedures. \\ Several tests have been performed in different prototypes of the drift chamber, exposed tocos- mic rays, test beams and radioactive sources, to fulfill the requirement on the spatial resolution to be less than 110 µm. The drift chamber is currently under construction at INFN and shouldbe completed by the end of 2017 to be then delivered to PSI. Experimental Collaboration Meg collaboration Primary authors: CHIARELLO, gianluigi (University of Salento - INFN Lecce); TASSIELLI, Gio- vanni F. (INFN Lecce / Università del Salento) Co-authors: PANAREO, Marco (Universita degli Studi di Lecce); GRANCAGNOLO, Francesco (INFN); CHIRI, Claudio (INFN - National Institute for Nuclear Physics); MICCOLI, Alessandro (INFN Lecce e Universita del Salento (IT)); Mr CORVAGLIA, Alessandro Presenter: CHIARELLO, gianluigi (University of Salento - INFN Lecce) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 624 EPS-HEP 2017 / Report of Contributions Search for physics beyond the SM … Contribution ID: 794 Type: Parallel Talk Search for physics beyond the SM in meson decays with WASA detector. Thursday, 6 July 2017 17:45 (15 minutes) The indirect searches for dark matter particles are a very hot topic of today’s physics andastro- physics. The energy-mass content of the Universe is one of the biggest riddles of modern science. The Standard Model describes the physics of only a small fraction of the Universe. Although only gravitational interaction of the dark matter with normal matter was observed up to now, alotof effort is put by the scientific community into searches for some new interaction between darkand usual matter. This new force would be carried by a new boson and the latter could beseeninthe decays of mesons. Most of the scientific research for the effects of dark matter focuses on veryhigh energy physics, still the existence of such effects at lower energy scales is not excluded. Through the analysis of the rare decays of light mesons (eta, neutral pion) WASA collaboration searches for a dark matter signal which cannot be described in the frame of the Standard Model. Thiseffect could be explained by a coupling between a dark boson and Standard Model particles (leptons, photons and/or quarks). The WASA detector is perfectly suited to study leptonic decays for ithas the capability to detect both neutral and charged particles and particle identification capacity. The analysis of channels such as η → e+e−γ, η → e+e− or π0 → e+e−γ will be presented. The data sample with η meson production was collected in proton proton collisions at 1.4 GeV kinetic energy. Experimental Collaboration WASA Primary author: PSZCZEL, Damian (Uppsala University) Presenter: PSZCZEL, Damian (Uppsala University) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 625 EPS-HEP 2017 / Report of Contributions KLOE/KLOE-2 results and perspec … Contribution ID: 795 Type: Parallel Talk KLOE/KLOE-2 results and perspectives on dark force search Thursday, 6 July 2017 18:00 (15 minutes) During the last years several Dark Sector Models have been proposed in order to address striking astrophysical observations which fail standard intepretations. In the minimal case a new vector particle, the so called dark photon (U or A’ boson), is introduced, with small coupling with Standard Model particles. Also, the existence of a dark Higgs boson h’ is postulated, in analogy with the Standard Model, to give mass to the dark photon through the Spontaneous Symmetry Breaking mechanism. The experiment KLOE, which collected 2.5 fb-1 of integrated luminosity at the Dafne e+e-collider in Frascati, searched for the existence of the dark photon in a quite complete way, investigating three different processes and six different final states: • in dalitz decays of the Phi meson Phi-> eta U, with U->e+e- and eta-> pi+pi-pi0 and p0p0p0 • in e+e- -> U gamma events, with U decaying to electron, muon and pion pairs • in the dark Higgsstrahlung process, e+e- -> Uh’, U-> mu+mu-, h’ invisible. Tight limits on the model parameters have been set at 90%CL. A new beam crossing scheme, allowing for a reduced beam size and increased luminosity, is now operating at DAFNE. The upgraded detector, named KLOE-2, has already collected 3.5 fb-1 inthese new operating conditions. Further improvements are expected in terms of sensitivity and discovery potential with KLOE-2, both because of the larger available integrated luminosity and the presence of a new tracking detec- tor in the interaction region, with better momentum and vertex position measurement resolutions. A single photon trigger is now in operation and will allow the search of the dark photon through its invisible decays in light dark matter particles. Experimental Collaboration KLOE-2 Primary author: Dr GRAZIANI, Enrico (INFN-Roma3) Presenter: MANDAGLIO, Giuseppe (INFN - National Institute for Nuclear Physics) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 626 EPS-HEP 2017 / Report of Contributions Test of discrete symmetries with n … Contribution ID: 796 Type: Parallel Talk Test of discrete symmetries with neutral kaons at KLOE-2 Saturday, 8 July 2017 11:00 (15 minutes) The KLOE-2 experiment at the INFN Laboratori Nazionali di Frascati (LNF) is currently taking data at the e+e- DAFNE collider which is implementing an innovative collision scheme based on a crab-waist configuration. An integrated luminosity of 3.5 fb-1 has been already collected by KLOE-2, and at least 5fb−1are expected by Spring 2018. KLOE-2 represents the continuation of KLOE with an upgraded detector and an extended physics program which includes neutral kaon interferometry and test of discrete symmetries among the main topics. Entangled neutral kaon pairs produced at DAFNE are a unique tool to test discrete symmetries and quantum coherence at the utmost sensitivity, in particular strongly motivating the experimental searches of possible CPT violating effects, which would constitute an unambiguous signal of a New Physics framework. The status of the latest ongoing analyses on KLOE/KLOE-2 data using themost refined analyses tools will be presented and discussed: (i) measurement of the KS semileptonic charge asymmetry and tests of CP and CPT symmetry, (ii) test of Time reversal and CPT in transitions in Phi->KSKL->pienu,3pi0,(2pi) decays, (iii) search for the CP violating KS->3pi0 decay. Experimental Collaboration KLOE-2 Primary author: DI DOMENICO, Antonio (Sapienza Universita e INFN, Roma I (IT)) Presenter: DI DOMENICO, Antonio (Sapienza Universita e INFN, Roma I (IT)) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 627 EPS-HEP 2017 / Report of Contributions Development and characterization … Contribution ID: 797 Type: Parallel Talk Development and characterization of near-UV sensitive Silicon Photomultipliers for the Schwarzschild-Couder Telescope prototype for the CTA collaboration Friday, 7 July 2017 10:42 (17 minutes) Silicon Photomultipliers (SiPM) are standard sensors widely employed for applications in which high sensitivities and fast responses in the detection of low fluxes of visible and UV photons are required. The Italian Institute of Nuclear Physics (INFN), in collaboration with Fondazione Bruno Kessler (FBK), is involved in a R&D project for SiPM sensors sensitive to near UV wavelengths. The performances of the latest technology of NUV-High-Density SiPM have confirmed thatthe quality of the current production technology opens the possibility to employ these devices for many applications. In this contribution, we review the performances of the latest technology of NUV-High-Density SiPM and the prospects for their use in one of the designs of the camera focal planes of Schwarzschild- Couder Telescope prototype, including the development of packaging procedures of single sensors into high-density multi-SiPM modules and the development of a custom front-end ASIC for a high rate waveform sampling of the SiPM signals. Experimental Collaboration Cherenkov Telescope Array (CTA) Primary authors: BOIANO, Alfonso (INFN); BONAVOLONTÀ; ARAMO, Carla (INFN - Napoli); SI- MONE, Daniela (INFN - National Institute for Nuclear Physics); DI VENERE; Dr BISSALDI, Elisa- betta (INFN Bari); FIANDRINI, Emanuele (Universita e INFN, Perugia (IT)); GIORDANO, Francesco (INFN); AMBROSI, Giovanni (Universita e INFN, Perugia (IT)); TOSTI, Luca; IONICA, Maria (Univer- sita e INFN, Perugia (IT)); MASONE; AMBROSIO, Michelangelo (Dipartimento di Scienze Fisiche); CAPRAI, Mirko; PAOLETTI, Riccardo (Universita degli studi di Siena (IT)); VALENTINO; VAGELLI, Valerio (Uni- versita e INFN, Perugia (IT)); POSTOLACHE, Vasile; DE LISIO; GIGLIETTO, nicola (infn-bari) Presenter: FIANDRINI, Emanuele (Universita e INFN, Perugia (IT)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 628 EPS-HEP 2017 / Report of Contributions The Hyper-Kamiokande Experiment Contribution ID: 798 Type: Parallel Talk The Hyper-Kamiokande Experiment Thursday, 6 July 2017 15:15 (15 minutes) Hyper-Kamiokande is a planned next-generation multi-purpose megaton-scale water Cherenkov detector in Japan. It is situated along the same J-PARC beam line as T2K. The detector, which is heavily influenced by its successful predecessor Super-Kamiokande, will consists of two cylindrical tanks filled with 260 ktons of ultrapure water, a volume approximately 10 times larger thanSuper- Kamiokande. 40,000 ultrasensitive photo-sensors will clad its internal volume and 6,700 on the external detector faces. This massive undertaking pro-vides challenges for R&D, calibration, DAQ and construction. We will present the current detector design, systems and status, as well as its capability to address the fundamental question of the CP violation in the leptonic sector. Results assuming the second tank based in Korea will also be presented. Experimental Collaboration Hyper Kamiokande Primary author: Dr RICHARDS, Benjamin (QMUL) Presenter: Dr RICHARDS, Benjamin (QMUL) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 629 EPS-HEP 2017 / Report of Contributions Probing Chirality of Top-Higgs FC … Contribution ID: 799 Type: Parallel Talk Probing Chirality of Top-Higgs FCNC Couplings at Linear Colliders Friday, 7 July 2017 15:00 (15 minutes) We study the nature of the flavor changing neutral couplings of the top quark with theHiggs boson and the up/charm quark in the tt¯ production at linear colliders. There are previous bounds on such tqH couplings at both, linear and hadronic colliders, with the assumption that it couples equally to the left and the right handed fermions. In this paper we examine the chirality ofthe tqH coupling and construct different observables which will be sensitive to it. It was found thatin particular the off-diagonal basis can be useful to distinguish among the chiral tqH couplings. The sensitivity of the unpolarized ILC in probing the couplings at the 3σ level at s√ = 500 GeV and L = 500 fb−1 is also studied, resulting in predicted BR(t → qH) < 1.19 ×10−3. This limit isfurther improved to BR(t → qH) < 8.84 ×10−4 with the inclusion of initial beam polarization of left handed electrons and right handed positrons. Experimental Collaboration Primary author: Dr PATRA, Monalisa (Rudjer Boskovic Institute, Zagreb) Presenters: Prof. MELIC, Blazenka (Rudjer Boskovic Institute, Zagreb); MELIC, Blazenka; MELIC, Blazenka (IRB, Zagreb); MELIC, Blazenka Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 630 EPS-HEP 2017 / Report of Contributions Decoupling effects in the running … Contribution ID: 800 Type: Parallel Talk Decoupling effects in the running of the Cosmological Constant Friday, 7 July 2017 10:45 (15 minutes) We revisit the decoupling effects associated with heavy particles in the renormalization group running of the vacuum energy in a mass-dependent renormalization scheme. We find the running of the vacuum energy stemming from the Higgs condensate in the entire energy range and show that it behaves as expected from the simple dimensional arguments meaning that it exhibits the quadratic sensitivity to the mass of the heavy particles in the infrared regime. The consequence of such a running to the fine-tuning problem with the measured value of the Cosmological Constant is analyzed and the constraint on the mass spectrum of a given model is derived. We show that in the Standard Model (SM) this fine-tuning constraint is not satisfied while in the massless theories this constraint formally coincides with the well known Veltman condition. We also provide a remarkably simple extension of the SM where saturation of this constraint enables us to predict the radiative Higgs mass correctly. Generalization to constant curvature spaces is also given. Experimental Collaboration Primary author: ANTIPIN, Oleg (Institut Rudjer Boskovic) Presenters: Prof. MELIC, Blazenka (Rudjer Boskovic Institute, Zagreb); MELIC, Blazenka; MELIC, Blazenka (IRB, Zagreb); MELIC, Blazenka Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 631 EPS-HEP 2017 / Report of Contributions Search for tau neutrinos at PeV en … Contribution ID: 801 Type: Parallel Talk Search for tau neutrinos at PeV energies and beyond with the MAGIC telescopes Thursday, 6 July 2017 16:58 (18 minutes) The MAGIC telescopes, located at the Roque de los Muchachos Observatory (2200 a.s.l.) in the Canary Island of La Palma, are placed on the top of a mountain, from where a window of visibility of about 5◦ in zenith and 80◦ in azimuth is open in the direction of the surrounding ocean. This permits to search for a signature of particle showers induced by earth-skimming cosmic tau neutrinos in the PeV to EeV energy range arising from the ocean. We have studied the response of MAGIC to such events, employing Monte Carlo simulations of upward-going tau neutrino showers. The analysis of the shower images shows that air showers induced by tau neutrinos can be discriminated from the hadronic background coming from a similar direction. We have calculated the point source acceptance and the expected event rates, assuming an incoming tau neutrino flux consistent with IceCube measurements, and for a sample of generic neutrino fluxes from photo-hadronic interactions in AGNs and GRBs. The analysis of about 30 hours of data taken toward the sea leads to a point source sensitivity for tau neutrinos at the level of the down-going point source analysis of the Pierre Auger Observatory, but the diffuse limit is less constraining with respect to the IceCube diffuse results for tau neutrinos. Experimental Collaboration the MAGIC Collaboration Primary authors: Dr GORA, Dariusz (Institute of Nuclear Physics PAN); MANGANARO, Marina (IAC - Instituto de Astrofísica de Canarias); Prof. BERNARDINI, Elisa (DESY and Humboldt University, Germany); Dr DORO, Michele (University and INFN Padova); Dr WILL, Martin (Inst. de Astrofísica de Canarias,); Dr RICO, Javier (Institut de Fisica d’Altes Energies (IFAE)); Dr LOMBARDI, Saverio (INAF-OAR and ASDC, Rome, Italy ); Dr SOBCZYNSKA, Dorota (University of Lodz) Presenters: Dr GORA, Dariusz (Institute of Nuclear Physics PAN); MANGANARO, Marina (IAC - Instituto de Astrofísica de Canarias) Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 632 EPS-HEP 2017 / Report of Contributions Astroparticle physics with ARGO- … Contribution ID: 802 Type: Parallel Talk Astroparticle physics with ARGO-YBJ Thursday, 6 July 2017 15:24 (18 minutes) The ARGO-YBJ experiment was installed in the Tibet region of China, 4300 meters above sealevel. It run continuously from November 2007 until February 2013, with the goal of observing astronom- ical gamma-ray sources in the energy range between a few hundred GeV and about 100 TeV, and primary cosmic rays in the energy range between about 1 TeV and a few PeV. The unique feature of the ARGO-YBJ detector was its full-coverage layout of Resistive Plate Chambers on an area of (78 x 74) m^2, with a guard ring around and a full area of 11000 m^2. The most important results obtained by ARGO-YBJ will be presented, with specific focus on the observation and monitoring of galactic and extragalactic gamma-ray sources and primary light-nuclei spectrum and knee. Experimental Collaboration ARGO-YBJ Primary author: CAMARRI, Paolo (University of Roma ”Tor Vergata”) Presenters: CAMARRI, Paolo (University of Roma ”Tor Vergata”); CAMARRI, Paolo (INFN e Uni- versita Roma Tor Vergata (IT)) Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 633 EPS-HEP 2017 / Report of Contributions CREATIONS: Infusing creativity in … Contribution ID: 803 Type: Parallel Talk CREATIONS: Infusing creativity in science education through the arts Friday, 7 July 2017 15:00 (15 minutes) Science education research suggests that STEM learning for young students may be especially enhanced through the combined use of inquiry and creativity in formal and informal settings. Consistent with the increasing emphasis on interdisciplinarity and the integration of the arts into STEM instruction (from STEM to STEAM), the CREATIONS initiative within the HORIZON-2020 framework brings together 16 partners from 10 European countries with the specific aim to spark young people’s interest in science and in following scientific careers through the design and im- plementation of a series of innovative activities grounded in a creativity-enriched inquiry-based science education pedagogical framework. Art is applied as a tool to make the non-visible world of high-energy physics (HEP) visible and to promote a long-lasting dialogue between basic science, the art world and educational communities for a greater appreciation and understanding of particle physics research and its contribution to society. As a good practice example, Science&Art@School was established as an education and outreach initiative (part of the art@CMS programme at CERN), that aims to act as an inspiring springboard for engaging the youth in the excitement of scientific research in HEP. By offering such synergies between the three actors, sparking school students’ interest in science and – on the long range – in choosing scientific careers is supposed to arise. This consequent bridging is based on an effective community of researchers, teachers andschool students to empower sharing and exploiting innovatively the collective power of unique scientific resources. This talk will present examples of HEP-related education activities successfully imple- mented by various CREATIONS partners over the last two years, based on which implications for physics education research and practice will be identified. Experimental Collaboration Primary authors: Dr ALEXOPOULOS, Angelos (CERN); BOGNER, Franz (University of Bayreuth); Dr CUNNINGHAM, Elizabeth (Science and Technology Facilities Council); Dr HOCH, Michael (HEPHY In- stitute & CERN); Mr LEE, David (European Physical Society); Mrs LONG, Lynn (University of Birming- ham); NIKOLOPOULOS, Konstantinos (University of Birmingham (GB)); Dr PALMER, Sophy (Science and Technology Facilities Council); Dr PAVLIDOU, Maria (University of Birmingham); Dr PETRILLI, Achille (CERN); Dr SOTIRIOU, Sofoklis (R&D Department Ellinogermaniki Agogi); Dr STORR, Mick (University of Birmingham (GB)) Presenter: Dr ALEXOPOULOS, Angelos (CERN) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 634 EPS-HEP 2017 / Report of Contributions Rates and CP asymmetries of Cha … Contribution ID: 805 Type: Poster Presentation Rates and CP asymmetries of Charmless Two-body Baryonic Bu,d,s Decays With the experimental evidences of B0 → pp and B− → Λp decays, it is now possible to extract both tree and penguin amplitudes of the charmless two-body baryonic B decays for the first time. The extracted penguin-tree ratio agrees with the expectation. Using the topological amplitude approach with the experimental results on B0 → pp and B− → Λ¯p decay rates as input, predic- tions on all other Bq → calBcalB, calBcalD, calDcalB and calDcalD decay rates, where B and calD are the low lying octet and decuplet baryons, respectively, are given. It is non-trivial that the results do not violate any existing experimental upper limit. From the analysis it is un- derstandable that why B0 → pp and B− → Λ¯p modes are the first two modes with experimental evidences. Relations on rates are verified using the numerical results. We note that the predicted B− → p∆++ rate is close to the experimental bound, which has not been updated in the last ten years. Direct CP asymmetries of all Bq → calBcalB, calBcalD, calDcalB and calDcalD modes are explored. Relations on CP asymmetries are examined using the numerical results. The direct CP asymmetry of B0 → pp decay can be as large as ±50%. The CP asymmetries of ∆S = −1 pure penguin modes are constrained to be of few %. These modes are expected to be sensitive to New Physics contributions and are good candidates to be added to the list of the tests of the Standard Model. Experimental Collaboration Primary author: CHUA, Chun-Khiang Presenter: CHUA, Chun-Khiang Session Classification: Poster session Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 635 EPS-HEP 2017 / Report of Contributions The SST-1M Cherenkov telescope f… Contribution ID: 807 Type: Parallel Talk The SST-1M Cherenkov telescope for high-energy gamma-ray astronomy and its SiPM-based camera Saturday, 8 July 2017 09:45 (15 minutes) An array of about 70 small-sized telescope will cover the high-end of the gamma ray energy spec- trum at the southern site of the Cherenkov telescope array (CTA). They will offer an unprecedented insight on the energetic processes in the range 1-300TeV originated in galactic and extragalactic sources. The SST-1M is one of the three implementations of those small-sized telescopes and consists ofan innovative digital camera based on silicon photo-multipliers mounted on a Davis-Cotton optics with a single seg- mented 4-m diameter mirror. The telescope, the photo-detection plane, its digital readout and its trigger system will be described, together with the test setup realised to fully characterise the camera and the calibration strategy to operate it. This test setup allows us to asses the performances of the camera, from the single silicon photo-multiplier re- sponse to the overall trigger rate and efficiencies. The performances of the system will be discussed and compared to end-to-end simulations of the telescope. Experimental Collaboration SST-1M Collaboration and the CTA consortium Primary authors: COCO, Victor (Universite de Geneve (CH)); DELLA VOLPE, Domenico (Univer- sitè de Genève); HELLER, Matthieu (Universite de Geneve (CH)); ALISPACH, Cyril Martin (Universite de Geneve (CH)); NJOH EKOUME, Theodore (Universite de Geneve (CH)); AL SAMARAI, Imen (Univer- site de Geneve (CH)); CADOUX, Frank Raphael (Universite de Geneve (CH)); FAVRE, Yannick (Univer- site de Geneve (CH)); MONTARULI, Teresa; NAGAI, Andrii (Universite de Geneve (CH)); TROYANO PUJADAS, Isaac (Universite de Geneve (CH)); LYARD, Etienne (University of Geneva); SLIUSAR, Vitalii (Université de Genève); NERONOV, Andrii (Universite de Geneve (CH)); WALTER, Roland (University of Geneva); MACH, Emil (IFJ); MICHALOWSKI, Jerzy (High Energy Department); NIEMIEC, Jacek (Institute of Nuclear Physics PAS); STODULSKA, Magdalena (Institute of Nuclear Physics PAS); OS- TROWSKI, Michal (Jagiellonian University); Dr STAWARZ, Lukasz (Jagiellonian University, Krakow, Poland); ZIETARA, Krzysztof (Jagiellonian University); PAŚKO, Paweł (SRC PAS); Mr BORKOWSKI, Jerzy; MODERSKI, Rafal (Nicolaus Copernicus Astronomical Center); LALIK, Kris (AGH-UST); Dr MANDAT, Dusan (Institute of Physics of the Czech Academy of Sciences); PECH, Miroslav (Academy of Science Czech Republic); BLOCKI, J. (IFJ); RAFALSKI, J. (IFJ); SKOWRON, K. (IFJ); STODUL- SKI, M. (IFJ); BULIK, T. (University of Warsaw); GRUDZINSKA, M. (University of Warsaw); JAM- ROZY, M. (Jagiellonian University); ZAGDANSKI, A. (Jagiellonian University); SEWERYN, K. (SRC PAS); FRANKOWSKI, A. (Nicolaus Copernicus Astronomical Center); JANIAK, M. (Nicolaus Coper- October 6, 2021 Page 636 EPS-HEP 2017 / Report of Contributions The SST-1M Cherenkov telescope f… nicus Astronomical Center); BILNIK, W. (AGH University of Science and Technology); KASPEREK, J. (AGH University of Science and Technology); RAJDA, P. (AGH University of Science and Technol- ogy); WIECEK, M. (AGH University of Science and Technology); SCHOVANEK, P. (Institute of Physics of the Czech Academy of Sciences, Olomouc) Presenter: COCO, Victor (Universite de Geneve (CH)) Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 637 EPS-HEP 2017 / Report of Contributions Improving predictions for associat … Contribution ID: 808 Type: Parallel Talk Improving predictions for associated t\bar{t}H production at the LHC: soft gluon resummation through NNLL accuracy Friday, 7 July 2017 11:30 (15 minutes) Recent results on the resummation of soft gluon corrections to the pp → ttH¯ cross section at the LHC will be presented. The resummation was carried out at next-to-next-to-leading-logarithmic (NNLL) accuracy using the Mellin space technique and matched to the NLO cross section. The pro- cess probes directly the top-Higgs Yukawa coupling that may be particularly sensitive to physics beyond the Standard Model. The measurement of the pp → ttH¯ cross section is among the high- est priorities of the current LHC physics program and therefore, improvement of the theoreti- cal accuracy is of the central importance. We show that the resummation leads to reduction of scale-variation uncertainty of the total pp → ttH¯ cross section and three-particle invariant mass distributions. Experimental Collaboration Primary authors: KULESZA, Anna (University of Muenster); MOTYKA, Leszek; THEEUWES, Vincent (SUNY, Buffalo); STEBEL, Tomasz (Jagiellonian University) Presenter: STEBEL, Tomasz (Jagiellonian University) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 638 EPS-HEP 2017 / Report of Contributions Development of a thin-wall straw- … Contribution ID: 809 Type: Parallel Talk Development of a thin-wall straw-tube tracker for COMET experiment Friday, 7 July 2017 12:10 (16 minutes) The COMET experiment at J-PARC aims to search for the charged lepton flavor violating processof neutrinoless muon to electron conversion with an improvement of a sensitivity by a factor of 10000 to the current limit, in order to explore the parameter region predicted by most of well-motivated theoretical models beyond the Standard Model. When the muon to electron conversion occurs, almost all the energy of the muon mass is carried out by the electron which is expected to have the monochromatic energy of about 105 MeV. The experiment requires to detect such electron with an excellent momentum resolution, better than 200 keV/c, in order to achieve the goal sensitivity. Thus the very light material detector which is operational in vacuum is indispensable. Onthebasis of the requirement, we have developed the thin-wall straw-tube tracker which is operational in the vacuum and constructed by the extremely light material. The prototype straw-tube tracker has been developed, which consists of 9.8 mm diameter tube, longer than 1 m length, with 20 µm thickness Mylar foil and 70 nm aluminum deposition, and its performance evaluation using radioactive source, cosmic ray, and electron beam has been performed. In this presentation, we report the detail of the performance evaluation of the prototype tracker. The prospect of final detector design is also described. Experimental Collaboration Primary author: UENO, Kazuki (KEK) Co-authors: EVTOUKHOVITCH, Peter (Joint Inst. for Nuclear Research (RU)); FUJII, Yuki (High En- ergy Accelerator Research Organization); HAMADA, Eitaro; MIHARA, Satoshi (KEK); MOISEENKO, Anatoly (JINR); NISHIGUCHI, Hajime (KEK); OISHI, Kou (Kyushu University); SAITO, Takashi (Kyushu University); SAMARTSEV, Alexander (JINR); TOJO, Junji (Kyushu University (JP)); TSAMALAIDZE, Zviadi (JINR); TSVERAVA, Nikolozi (JINR) Presenter: UENO, Kazuki (KEK) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 639 EPS-HEP 2017 / Report of Contributions art@CMS sciARTmasterclass 5 ye … Contribution ID: 810 Type: Poster Presentation art@CMS sciARTmasterclass 5 years successful experience with interdisciplinary science education art@CMS is an education and outreach program of the CMS experiment at the Large Hadron Col- lider (LHC) at CERN, the European Laboratory for Particle Physics. It is based on the collaboration between the CMS and HEP scientific community, artists, art communities,as well as art and science teachers. The art@CMS scheme enacts as a master example within the HORIZON2020 initiative CREATIONS. Since the school year 2012/2013 the art@CMS program is running interdisciplinary educative science inspiration and education workshops for different levels of education. The aim ofthe art@CMS sciARTmasterclass or Science&Art@school is to perform innovative activities that in- volve teachers or supervisors and school or academic students and enhance their scientific research through arts. The art@CMS program based on global engagement and local networking makesthe case for different forms of education that fosters skills that are more appropriate to challenges of the 21st century. The sciARTmasterclass follows modern concepts to quantify the benefits ofde- veloping skills such as innovations, creativity and critical thinking. Experimental Collaboration CMS CERN Primary authors: Dr HOCH, Michael (Michael Hoch, HEPHY, Austrian Academy of Science Vienna (AT) CERN/ CMS, Geneva Switzerland); STORR, Mick (University of Birmingham (GB)) Presenter: Dr HOCH, Michael (Michael Hoch, HEPHY, Austrian Academy of Science Vienna (AT) CERN/ CMS, Geneva Switzerland) Session Classification: Poster session Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 640 EPS-HEP 2017 / Report of Contributions Extending the gravitational waves … Contribution ID: 811 Type: Parallel Talk Extending the gravitational waves searches for black holes with intermediate masses and residual eccentricity at merger Friday, 7 July 2017 18:00 (15 minutes) Detections of stellar mass binary black holes (BBHs) system in the first observing run of LIGO interferometers has started an exciting new era of black hole astrophysics. Understanding the possible formation channels of the population of BBH will be important to un- derstand the environment in which such systems are formed. Hence, the recent detections prove that BBHs exists in nature and merge within Hubble time, and so there is a strong motivation to search for BBH systems in a larger parameter space, such as BBH with intermediate masses (IMBBH) and residual eccentricity till the time of merger (eBBH). Detection or rate upper limits on IMBBH or eBBH will extend the understanding of the formation channels and black hole astro- physics. The search for such sources is conducted using both templated search with extended template bank to IMBBH and un-modelled searches tuned to IMBBH and eBBH. We present here the meth- ods and results for the searches concerning IMBBH and eBBH, also present the results of the search for IMBBH in the first observational run of the LIGO detectors where no detections were madebut very interesting rate upper limits were obtained. Experimental Collaboration LIGO and VIRGO Primary author: TIWARI, Shubhanshu (INFN - National Institute for Nuclear Physics) Presenter: TIWARI, Shubhanshu (INFN - National Institute for Nuclear Physics) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 641 EPS-HEP 2017 / Report of Contributions Small-pad Resistive Micromegas fo … Contribution ID: 812 Type: Poster Presentation Small-pad Resistive Micromegas for Operation at Very High Rates The resistive micromegas detectors have already proved to be suitable for precision tracking in dense particle rate environment up to few kHz/cm2. Rate capability up to few MHz/cm2 and low occupancy can be achieved by using few mm2 readout pads. Such a rate capability will be required in upgrades of forward muon detectors of LHC experiments as well as in experiments at future colliders. We present the development of resistive micromegas with O(mm2) pad readout aiming at precision tracking in high rate environment without efficiency loss up to several MHz/cm2. A first small-pad prototype has been designed, constructed and tested. It consists of amatrixof 48x16 pads. Each pad with rectangular shape with a pitch of 1 and 3 mm in the two coordinates. The active surface is 4.8x4.8 cm2 with a total number of 768 channels. Characterization and performance studies of the detector have been carried out by means of ra- dioactive sources, high irradiation X-Rays, cosmic rays and test beam. The results will be presented, along with a new development aiming at the construction of fully scalable, thousands-channels small-pad detectors, with embedded front-end electronics. Experimental Collaboration Primary authors: ALVIGGI, Mariagrazia (Universita e INFN, Napoli (IT)); BIGLIETTI, Michela (INFN Roma Tre); CAMERLINGO, Maria Teresa (Universita e INFN, Napoli (IT)); CANALE, Vincenzo (Universita e INFN, Napoli (IT)); DELLA PIETRA, Massimo (Universita e INFN, Napoli (IT)); DI DO- NATO, Camilla (Universita e INFN, Napoli (IT)); FARINA, Edoardo Maria (Universita e INFN, Pavia (IT)); FRANCHINO, Silvia (Ruprecht-Karls-Universitaet Heidelberg (DE)); GRIECO, Chiara (Universita e INFN, Napoli (IT)); IENGO, Paolo (CERN); IODICE, Mauro (INFN - Sezione di Roma Tre); PETRUCCI, Fabrizio (Universita e INFN, Roma Tre (IT)); ROSSI, Eleonora (Universita e INFN, Roma Tre (IT)); SEKHNI- AIDZE, Givi (Universita e INFN, Napoli (IT)); SIDIROPOULOU, Ourania (Bayerische Julius Max. Uni- versitaet Wuerzburg (DE)); Ms VECCHIO, Valentina (Universita e INFN, Roma Tre (IT)) Presenter: IENGO, Paolo (CERN) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 642 EPS-HEP 2017 / Report of Contributions Application of SiPM arrays for the … Contribution ID: 813 Type: Poster Presentation Application of SiPM arrays for the readout of a scintillator based time-of-flight detector A study of feasibility of replacing a conventional phototube with an array of SiPMs is presented. High gain, low voltage operation and insensitivity to the magnetic field make SiPMs practically useful for the light collection in a physics experiment. In addition, sensors can be assembled in a compact system which is easily scalable. In this study an array of large area SiPMs was coupled directly to the end of a long plastic scintillator counter. The principal restriction for applications requiring accurate evaluation of the photons arrival time is the large capacitance of SiPM which results in broadening of the signal shape. A natural solution of the problem is to amplify and read- out a large SiPM surface in parts. In this study an 8 channel SiPM anode readout ASIC (MUSIC R1) based on a novel low input impedance current conveyor is used. The evaluation board pro- vides individual single ended outputs and the sum of signals. Both analog and digital outputs are supported by the board. Prospects for applications in large-scale particle physics detectors with timing resolution around 100 ps are provided in light of the results. Experimental Collaboration Primary authors: Dr KORZENEV, Alexander (Université de Genève (CH)); BETANCOURT, Christo- pher (Universitaet Zuerich (CH)); GASCON, David (University of Barcelona (ES)); GOMEZ FERNAN- DEZ, Sergio (University of Barcelona (ES)); MERMOD, Philippe (Universite de Geneve (CH)); SERRA, Nicola (Universitaet Zuerich (CH)); STORACI, Barbara (Universitaet Zuerich (CH)); BLONDEL, Alain (Universite de Geneve (CH)); BRUNDLER DENZER, Ruth (Universitaet Zuerich (CH)); DAETWYLER, Alexander; FAVRE, Yannick (Universite de Geneve (CH)); NOAH MESSOMO, Etam (Geneva univer- sity); SGALABERNA, Davide (Universite de Geneve (CH)) Presenter: Dr KORZENEV, Alexander (Université de Genève (CH)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 643 EPS-HEP 2017 / Report of Contributions Solar γ-rays as a Complementary … Contribution ID: 814 Type: Poster Presentation Solar γ-rays as a Complementary Probe of Dark Matter We show that observations of solar γ-ray fluxes offer a novel probe of dark matter, in scenarios where interactions with the visible sector proceed via a long-lived mediator. As a proof of principle, we demonstrate that there exists a class of models which yield solar γ-ray lines observable with the next generation of γ-ray telescopes, while being allowed by a large variety of experimental constraints. Our results suggest that fluxes of solar γ-ray lines can be up to two orders of magni- tude higher than the ones from the galactic center, and are subject to very low backgrounds. Solar γ-ray observations are complementary to the future direct/indirect dark matter detection efforts, especially when dark matter capture and annihilation in the Sun happen out of equilibrium. Experimental Collaboration Primary authors: ARINA, Chiara (CP3 UCLouvain); BACKOVIC, Mihailo (CP3-UCL); HEISIG, Jan (RWTH Aachen University); Dr LUCENTE, Michele (CP3-UCL) Presenter: Dr LUCENTE, Michele (CP3-UCL) Session Classification: Poster session Track Classification: Dark Matter October 6, 2021 Page 644 EPS-HEP 2017 / Report of Contributions Anisotropic flow studies in heavy … Contribution ID: 815 Type: Poster Presentation Anisotropic flow studies in heavy ion collisions at relativistic energies Anisotropic flow in heavy ion collisions is sensitive to the properties of produced hot anddense nuclear matter. In the present work, we will use a multi-phase transport (AMPT) model,with the default version and the version with string melting, to study the (pseudo)rapidity and pT de- pendence of anisotropic flow coefficients of charged hadrons and identified particles produced in heavy-ion collisions at future CBM-FAIR energies. These results could indicate if a partonic matter is formed during early stage of relativistic heavy ion collisions and only around midrapidity. The simulated results will be compared with existent experimental data. Experimental Collaboration Primary authors: RISTEA, Catalin-Lucian (Institute of Space Science (RO), University of Bucharest); RIS- TEA, Oana (University of Bucharest, Faculty of Physics); Dr JIPA, Alexandru (University of Bucharest, Faculty of Physics); Mrs PETRUSE, Teodora (University of Bucharest, Faculty of Physics); Dr LAZANU, Ionel (University of Bucharest, Faculty of Physics); Dr ESANU, Tiberiu (University of Bucharest, Na- tional Institute of Nuclear Physics and Engineering Horia Hulubei, Romania); Dr CALIN, Marius (Uni- versity of Bucharest, Faculty of Physics) Presenter: RISTEA, Catalin-Lucian (Institute of Space Science (RO), University of Bucharest) Session Classification: Poster session Track Classification: Heavy Ion Physics October 6, 2021 Page 645 EPS-HEP 2017 / Report of Contributions Quarkonia in heavy ion collisions Contribution ID: 816 Type: Parallel Talk Quarkonia in heavy ion collisions Thursday, 6 July 2017 09:00 (15 minutes) Quarkonium has been regarded as one of the golden probes to identify the phase transition from confined hadronic matter to the deconfined quark-gluon plasma (QGP) in heavy-ion collisions. Re- cent theoretical developments in the study of the J/ψ and ϒ families at the energies of Large Hadron Collider (LHC) are reviewed. In particular, the possible implications related to the production and propagation of quarkonia in proton-nucleus collisions are discussed. A special emphasis is put on the excited states such as the ψ′, Υ(2S) and Υ(3S). Experimental Collaboration Presenters: Prof. FERREIRO, Elena (University of Santiago de Compostela); GONZALEZ FERREIRO, Elena (Universidade de Santiago de Compostela (ES)); GONZALEZ FERREIRO, Elena (Universidad de Santiago de Compostela) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 646 EPS-HEP 2017 / Report of Contributions GW transient searches to probe N … Contribution ID: 817 Type: Parallel Talk GW transient searches to probe Neutron star physics Friday, 7 July 2017 17:00 (15 minutes) Transient gravitational wave emission can originate by phenomena associated with neutron stars (NSs) oscillations modes, such as hyperflares from galactic magnetars and binary coalescence. Po- tential signals related to these events are generally not well-modeled, requiring robust, morphology- independent analysis techniques. In particular, the coalescence of binary neutron stars (BNS) is a promising source of gravitational waves detectable by the advanced LIGO and Virgo interfer- ometers. The mass of the binary system and the NS equation of state (EoS) can lead todifferent scenarios for the system evolution: prompt collapse to black hole, formation of a remnant hy- permassive (HMNS) or supramassive (SMNS) neutron star with a delay collapse to black hole, or even a stable NS. In case of HMNS or SMNS formation, the newly-born NS is strongly perturbed: among the excited modes of the NS, the fundamental (quadrupolar) one is expected to produce in the emitted GW spectrum a strong peak typically in the kHz range. Therefore the characterization of the spectrum of the post merger phase (PMNS) allows to infer astrophysical properties of the source and to constrains on the EoS. With Advanced interferometer detectors, we may soon use BNS to investigate matter in an ex- tremely dense state. We will discuss the research on the spectral properties of GWs due to BNS, fo- cusing on the PM phase, and the analysis, under development, to unfold properties of the compact object; we will report the observing scenarios in the upcoming data taking of the interferometers network. Experimental Collaboration LIGO-Virgo Collaboration Primary author: Dr LAZZARO, Claudia (INFN ) Co-authors: Prof. PRODI, Giovanni Andrea (Università degli studi di Trento); TRINGALI, Maria Concetta (Università degli studi di Trento); Dr CIOLFI, Riccardo (INAF) Presenter: Dr LAZZARO, Claudia (INFN ) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 647 EPS-HEP 2017 / Report of Contributions Highlights of the ANTARES neutr … Contribution ID: 818 Type: Parallel Talk Highlights of the ANTARES neutrino telescope results Thursday, 6 July 2017 17:16 (18 minutes) ANTARES is the first undersea neutrino telescope and, at present, the largest one in the Northern hemisphere. Its main goal is the search for high-energy astrophysical neutrinos. It consists of an array of photomultipliers tubes housed in so-called optical modules, detecting the Cherenkov light induced along the path of relativistic charged particles originated by neutrino interactions in and around the instrumented volume. ANTARES, has been acquiring data in its final configuration since 2008. The excellent optical properties of the sea water and the location of the telescope allow for the reconstruction of neutrino event direction with very good angular resolution, and for high sensitivity searching for possible sources in the region of the Galactic plane. The most recent results of ANTARES searches for neutrino point sources, for diffuse neutrino emission from several interesting regions, and for neutrinos from WIMP annihilation in massive objects like the Sun and the Galactic Center will be presented. Particular attention will be given to the multimessenger approach, presenting the wide program of combined searches in collaboration with astronomical observatories, with cosmic ray experiments and, recently, with the LIGO/VIRGO interferometers. Experimental Collaboration ANTARES Primary author: MARGIOTTA, Annarita (Universita e INFN, Bologna (IT)) Presenter: MARGIOTTA, Annarita (Universita e INFN, Bologna (IT)) Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 648 EPS-HEP 2017 / Report of Contributions Probing Neutrino Mass Hierarchy … Contribution ID: 819 Type: Poster Presentation Probing Neutrino Mass Hierarchy by the Charged-Current and Neutral-Current Events of Supernova Neutrinos in Scintillation Detectors The neutrino mass hierarchy is one of the neutrino fundamental properties yet to be determined. We introduce a method to determine neutrino mass hierarchy by comparing the events of neutral + current (NC) interactions, ν(ν)+p → ν(ν)+p, and inverse beta decays (IBD), ν¯e +p → n+e , of supernova neutrinos from accretion and cooling phases in scintillation detectors. Neutrino flavor conversions inside the supernova are sensitive to neutrino mass hierarchy. Due to Mikheyev- Smirnov-Wolfenstein effects, the full swapping of ν¯e flux with the ν¯x (x = µ, τ) one occurs in the inverted hierarchy, while such a swapping does not occur in the normal hierarchy. As a result, the ratio of high energy IBD events to NC events for the inverted hierarchy is higher than the ratio for the normal hierarchy. Since the luminosity of ν¯e is larger than that of νx in accretion phase while the luminosity of ν¯e becomes smaller than that of νx in cooling phase, we calculate this ratio for both accretion and cooling phases. By analyzing the change of this event ratio from accretion phase to cooling phase, one can determine the neutrino mass hierarchy. Experimental Collaboration Primary authors: Dr LAI, Kwang-Chang (Chang Gung University); Dr LEE, Fei-Fan (National Chiao Tung University); Mr LEE, Feng-Shiuh (National Chiao Tung University); Prof. LIN, Guey-Lin (National Chiao Tung University) Presenter: Dr LAI, Kwang-Chang (Chang Gung University) Session Classification: Poster session Track Classification: Astroparticle Physics October 6, 2021 Page 649 EPS-HEP 2017 / Report of Contributions A Combined View of Sterile- … Contribution ID: 820 Type: Parallel Talk A Combined View of Sterile-Neutrino Constraints from CMB and Neutrino Oscillation Measurements Friday, 7 July 2017 15:00 (15 minutes) We perform a comparative analysis of constraints on sterile neutrinos from the Planck experi- ment and from current and future neutrino oscillation experiments (MINOS, IceCube, SBN). For the first time, we express the Planck constraints on Neff and msterileeff from the CosmicMi- crowave Background in the parameter space used by oscillation experiments using both mass- squared differences and mixing angles. In a model with a single sterile neutrino species andusing standard assumptions, we find that the Planck data and the oscillation experiments measuring muon-neutrino disappearance have similar sensitivity. We also compare these constraints for the electron-neutrino sterile-neutrino mixing angle in a 1+1 model and discuss how to extend the analysis to a 2+1 flavour model. Experimental Collaboration Primary author: GUZOWSKI, Pawel (University of Manchester) Presenter: GUZOWSKI, Pawel (University of Manchester) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 650 EPS-HEP 2017 / Report of Contributions Measuring baryon acoustic oscilla … Contribution ID: 821 Type: Parallel Talk Measuring baryon acoustic oscillations using the distribution of intergalactic gas Friday, 7 July 2017 12:30 (15 minutes) The Baryon Oscillation Spectroscopic Survey (BOSS) of SDSS-III has ushered in a new era forhigh- redshift quasar surveys studying the large-scale structure of the Universe through intervening absorption by the intergalactic gas. The unprecedented number of quasar absorption spectra pro- vided by BOSS allows us to measure the expansion rate and geometry of the Universe at redshift z>2 using baryon acoustic oscillations (BAO) imprinted in large-scale structures. I will present the latest measurements of the BAO scale using the absorption auto-correlation and cross-correlation with quasars based on 160,000 quasar spectra taken from SDSS-III Data Release 12. By combin- ing the BAO results from the auto- and cross-correlation, the Hubble parameter is measured with a precision of nearly 2%, providing direct evidence that the cosmic expansion was decelerating 11 billion years ago. New data from the ongoing Extended Baryon Oscillation Spectroscopic Sur- vey (eBOSS) of SDSS-IV and the near-future surveys DESI and WEAVE will greatly enhance the precision of the BAO measurement over the next decade. Experimental Collaboration Primary author: Dr BLOMQVIST, Michael (Laboratoire d’Astrophysique de Marseille) Presenter: Dr BLOMQVIST, Michael (Laboratoire d’Astrophysique de Marseille) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 651 EPS-HEP 2017 / Report of Contributions The global electroweak fit: present … Contribution ID: 822 Type: Parallel Talk The global electroweak fit: present status, constraints on new physics, and prospects at future colliders Thursday, 6 July 2017 11:30 (15 minutes) We review the status of the global electroweak fit in the Standard Model (SM), including the latest theoretical and experimental updates. We discuss in detail the consistency of the SM with current experimental data, and derive constraints on general new physics scenarios. These are compared and combined with the bounds obtained using Higgs boson observables measured at the LHC. Finally, we present the projection of the fit with the improvements expected at future e+ e- colliders. All the results have been obtained using the HEPfit code. Experimental Collaboration Primary authors: Dr DE BLAS, Jorge (University of Padova); CIUCHINI, Marco (INFN Sezione di Roma Tre); FRANCO, Enrico (INFN (Istituto Nazionale Fisica Nucleare)); MISHIMA, Satoshi (KEK); PIERINI, Maurizio (CERN); REINA, Laura (Florida State University (US)); SILVESTRINI, Luca (INFN Rome) Presenter: SILVESTRINI, Luca (INFN Rome) Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 652 EPS-HEP 2017 / Report of Contributions KLOE-2 Inner Tracker: the First C … Contribution ID: 823 Type: Parallel Talk KLOE-2 Inner Tracker: the First Cylindrical GEM Detector Thursday, 6 July 2017 10:30 (15 minutes) KLOE-2 at the e+e− DAΦNE collider, is the main experiment of the INFN Laboratori Nazionali di Frascati (LNF) and is the first high-energy experiment using the GEM technology with a cylindri- cal geometry, a novel idea developed at LNF exploiting the kapton properties. The experiment is the continuation of KLOE, upgraded with state-of-the-art technology to improve its discovery po- ′ tential, with a new physics program mainly focused on the study of Ks, η and η decays as well as on kaon interferometry, test of discrete symmetries, and search for physics beyond the Standard Model. Four concentric cylindrical triple-GEM detectors compose the Inner Tracker which has been inserted around the interaction region and before the inner wall of the pre-existing KLOE Drift Chamber, at distances from 130 mm to 205 mm, to improve the resolution on decayvertices close to the interaction point (IP) reconstructed from low-momentum charged secondaries. State- of-the-art solutions have been expressly developed or tuned for this project: single-mask GEM etching, multi-layer XV patterned readout circuit, PEEK spacer grid, GASTONE front-end board, a custom 64-channel ASIC with digital output, and the Global Interface Board for data collection, with a configurable FPGA architecture and Gigabit Ethernet. Alignment and calibration of acylin- drical GEM detector was never done before and represents one of the challenging activities of the experiment. The first set of alignment and calibration parameters obtained with cosmic-ray muons has been used with Bhabha scattering events to validate the integrated tracking using both Inner Tracker and Drift Chamber information, exploiting the Kalman filter technique. Data taking cam- paign started in November 2014, reached 3.5 fb−1 integrated luminosity and is presently ongoing with the aim of collecting more than 5 fb−1 by March 2018. The Inner Tracker detector operation, calibration and performance will be presented. Experimental Collaboration KLOE-2 Collaboration Primary author: DE LUCIA, Erika (INFN e Laboratori Nazionali di Frascati (IT)) Presenter: DE LUCIA, Erika (INFN e Laboratori Nazionali di Frascati (IT)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 653 EPS-HEP 2017 / Report of Contributions Perspectives for SUSY in light of c … Contribution ID: 828 Type: Parallel Talk Perspectives for SUSY in light of current LHC constraints Friday, 7 July 2017 17:00 (15 minutes) We present the current perspectives for SUSY at the LHC Run-II and at future colliders in the SU5, mAMSB and in a phenomenological Minimal Supersymmetric Standard Model scenarios with eleven parameters (pMSSM11). Our study includes the most important limits on SUSY coming from searches at runs 1 and 2 of the LHC, as well as the compatibility with the observed Higgs signal and the constraints coming from electroweak precision data and flavor physics. Cosmological data and direct searches for dark matter are also taken into account. Particular attention has been given to the impact of the constraint coming from the current measurementof muon anomalous magnetic moment. Experimental Collaboration Primary author: MARTINEZ SANTOS, Diego (U. Santiago de Compostela) Co-author: BAGNASCHI, Emanuele Angelo (DESY Hamburg) Presenter: MARTINEZ SANTOS, Diego (U. Santiago de Compostela) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 654 EPS-HEP 2017 / Report of Contributions Women in Science and Engineerin … Contribution ID: 830 Type: Parallel Talk Women in Science and Engineering at Syracuse University Friday, 7 July 2017 17:15 (15 minutes) The WiSE program at Syracuse University encompasses a broad spectrum of activities designed to develop the unique strengths and overcome the challenges that women in science, technology, engineering, and mathematics (STEM) face at every stage of their education and career, from the beginning of their undergraduate studies to accomplished professional roles. Key goals of Wise are an improvement of the persistence in STEM of undergraduate women through an emphasis on research, support career development and professional goals for women graduate students and postdoctoral research associates, improve career and personal productivity and balance for women STEM faculty. The unifying vision of this broad program is the goal of building a strong community andsocial network for women in STEM. Experimental Collaboration Primary author: ARTUSO, Marina (Syracuse University (US)) Presenter: ARTUSO, Marina (Syracuse University (US)) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 655 EPS-HEP 2017 / Report of Contributions Implications of Vector Boson Scatt … Contribution ID: 831 Type: Parallel Talk Implications of Vector Boson Scattering Unitarity in Composite Higgs Models Friday, 7 July 2017 09:00 (15 minutes) The strong nature of Composite Higgs models manifests at high energies through thegrowing behavior of the scattering amplitudes of longitudinally polarized weak bosons that leads tothe formation of composite resonances as well as non resonant strong effects. In this work, the uni- tarity of these scattering amplitudes, computed on the framework of chiral perturbation theory, is used as tool to assess the profile of composite spectrum of the theory, including non-resonant behavior, vector resonances, and specially the CP-even scalar excitation, which is only poorly described by lattice calculations. These three signatures are then studied in realistic scattering processes at colliders, aiming to estimate the potential to exclude natural dynamically motivated scenarios of Composite Higgs models. This work is based on arXiv:1605.0136 and a follow up paper which will be submitted in the next weeks. Experimental Collaboration Primary authors: BUARQUE FRANZOSI, Diogo (Universita e INFN Torino (IT)); Mr FERRARESE, Piero (University of Goettingen) Presenter: BUARQUE FRANZOSI, Diogo (Universita e INFN Torino (IT)) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 656 EPS-HEP 2017 / Report of Contributions Performance of the Pixel Luminosi … Contribution ID: 832 Type: Parallel Talk Performance of the Pixel Luminosity Telescope for Luminosity Measurement at CMS during Run2 Thursday, 6 July 2017 12:15 (15 minutes) The Pixel Luminosity Telescope (PLT) is a dedicated system for luminosity measurement atthe CMS experiment using silicon pixel sensors arranged into “telescopes”, each consisting of three planes. It was installed during LS1 at the beginning of 2015 and has been providing online and offline luminosity measurements throughout Run 2. The online bunch-by-bunch luminosity mea- surement employs the “fast-or” capability of the pixel readout chip (PSI46) to identify events where a hit is registered in all three sensors in a telescope corresponding primarily to tracks originating from the interaction point. In addition, the full pixel information is read out at a lower rate, allow- ing for the calculation of corrections to the online luminosity from effects such as the miscounting of tracks not originating from the interaction point and detector efficiency. In this talk, we will present results from 2016 running and preliminary 2017 results, including commissioning and op- erational history, luminosity calibration using Van der Meer scans, and corrections to the online luminosity, as well as offline performance and monitoring. Experimental Collaboration CMS Primary author: LUJAN, Paul (Universita e INFN, Padova (IT)) Presenter: LUJAN, Paul (Universita e INFN, Padova (IT)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 657 EPS-HEP 2017 / Report of Contributions Impact of CMS measurements on P … Contribution ID: 833 Type: Parallel Talk Impact of CMS measurements on Proton Structure and QCD parameters Friday, 7 July 2017 17:15 (15 minutes) The sensitivity of CMS measurements to Parton Distribution Functions, strong coupling constant and treatment of heavy flavours in QCD analyses is presented. CMS data collected at various center-of-mass energies and their impact on the PDFs are presented. Measurements of cross sec- tions of jet and top-quark pair production are in particular sensitive to the gluon distribution in the proton and the strong coupling, while the electroweak boson production - inclusive or associated with charm or beauty quarks give insight into the flavour separation of the proton sea and give hints to the treatment of heavy quarks in PDF-related studies. Experimental Collaboration Presenter: EREN, Engin (Deutsches Elektronen-Synchrotron (DE)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 658 EPS-HEP 2017 / Report of Contributions Higgs measurements at the HL- … Contribution ID: 834 Type: Parallel Talk Higgs measurements at the HL-LHC with CMS Thursday, 6 July 2017 18:00 (15 minutes) We present the performance of Higgs boson property measurements and BSM Higgs searches using the CMS detector in the High-Luminosity LHC conditions, with an integrated luminosity of up to 3000 fb-1. Projections of 13 TeV analyses and 14 TeV simulation studies are both shown. Experimental Collaboration CMS Primary author: CMS COLLABORATION Presenter: DE WIT, Adinda (Imperial College (GB)) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 659 EPS-HEP 2017 / Report of Contributions Prospects for standard model mea … Contribution ID: 835 Type: Parallel Talk Prospects for standard model measurements at the High-Luminosity LHC with CMS Saturday, 8 July 2017 10:45 (15 minutes) The proposed upgrade of the LHC, the High-Luminosity LHC (HL-LHC) is expected todeliver data corresponding to a luminosity of up to 3 ab-1 under severe pileup conditions with up to 200 additional interactions per bunch crossing. The pileup effects are expected to be mitigated by upgraded detectors, which allow to study rare physics processes up to large rapidities, as well as precision standard model measurements that benefit significantly from the high luminosity. Studies are presented that show the potential of the upgraded CMS detector at the HL-LHC with respect to B physics, top-quark production, decay and properties, as well as with respect to the measurement of electroweak processes. Experimental Collaboration Presenter: REZAEI HOSSEINABADI, Ferdos (Institute for Research in Fundamental Sciences (IR)) Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 660 EPS-HEP 2017 / Report of Contributions The Latest CMS results on Higgs b… Contribution ID: 836 Type: Poster Presentation The Latest CMS results on Higgs boson decaying to two photons with 13 TeV data The latest results of the measurement of the Higgs boson decaying into two photons withthefull 2016 data will be presented. The analysis is performed using the dataset recorded by theCMS experiment at the LHC from pp collisions at centre-of-mass energies of 13 TeV corresponding to an integrated luminosity of 35.9 1/fb. Experimental Collaboration Presenter: PUROHIT, Arnab (Saha Institute of Nuclear Physics (IN)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 661 EPS-HEP 2017 / Report of Contributions Cancelled: Multi-jet correlations Contribution ID: 837 Type: not specified Cancelled: Multi-jet correlations Experimental Collaboration Session Classification: Poster session Track Classification: QCD and Hadronic Physics October 6, 2021 Page 662 EPS-HEP 2017 / Report of Contributions New GEM Test Chambers for the … Contribution ID: 838 Type: Poster Presentation New GEM Test Chambers for the HL-LHC Upgrade in CMS In preparation for the High Luminosity LHC, GEM detectors will be installed during Long Shut- down 2 (2018-2019) in the forward region of 1.6 < |eta| < 2.2 to improve trigger and tracking per- formance in the muon endcap, and maintain sensitivity to low pT muons. During the 2016-2017 year-end technical stop, five pairs of triple-foil GEM detectors were installed on the minus endcap of CMS as a demonstrator for the GEM detector design. This poster will report on the quality con- trol tests of the front-end ASICs and GEM Electronics Boards used in this test, the installation of the chambers at CMS, and the ongoing commissioning of the detectors. The methods developed to calibrate and configure the front end electronics will be presented. Experimental Collaboration CMS Primary author: BAND, Reyer Edmond (University of California Davis (US)) Presenter: BAND, Reyer Edmond (University of California Davis (US)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 663 EPS-HEP 2017 / Report of Contributions Measurement of the differential cr … Contribution ID: 839 Type: Poster Presentation Measurement of the differential cross section for top-quark pair production in the dilepton channel at 13 TeV with the CMS detector In this poster we present measurements of normalized differential top quark pair (ttbar) production cross sections using final states with two leptons (ee, mumu, and emu) in proton-proton collisions at sqrt(s) = 13 TeV at the CERN LHC. The data were recorded in 2015 with the CMS detector and correspond to an integrated luminosity of 2.2 fb−1. The ttbar production cross section is measured as a function of kinematic properties of the top quarks and the ttbar system in the full phase space, as well as of the jet multiplicity in the event in the fiducial phase space. Several perturbative QCD calculations are confronted with the data and are found to be broadly in agreement with the measured results. Experimental Collaboration Presenter: SAVITSKYI, Mykola (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Poster session Track Classification: Top and Electroweak Physics October 6, 2021 Page 664 EPS-HEP 2017 / Report of Contributions Aging studies for the CMS RPC sy … Contribution ID: 840 Type: Poster Presentation Aging studies for the CMS RPC system Aging effects are studied for the CMS RPC system which can manifest during the HL-LHC running period. A dedicated consolidation program was set up using the CERN Gamma Irradiation Facility ++, where RPC detectors are exposed to a high gamma flux for a long term period equivalent to the HL-LHC operational time. Based on the past operational experience, the high background con- ditions are estimated and the RPCs are tested under such circumstances. Several parameters are monitored as function of integrated charge and dedicated test beam periods allows to measure the detector efficiency as function of the background rate. In this work, an overview of themeasure- ments which are performed for these studies is given. After having collected a significant amount of the total irradiation, no aging effects nor degradation of the RPC detectors has been observed. These results suggest that the RPC system is capable to handle the HL-LHC conditions. Experimental Collaboration CMS Primary author: EYSERMANS, Jan (Autonomous University of Puebla (MX)) Presenter: EYSERMANS, Jan (Autonomous University of Puebla (MX)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 665 EPS-HEP 2017 / Report of Contributions LSST: project status Contribution ID: 843 Type: Parallel Talk LSST: project status Friday, 7 July 2017 15:15 (15 minutes) The Large Synoptic Survey Telescope (LSST) is an automated ground-based 8.4m optical telescope, whose first observations are expected in 2023. The aim of this new instrument is toconducta ten year wide and deep imaging survey of 18,000 square degrees of the sky in six broad optical bands, with a deep stack reaching magnitude r = 27.5. The LSST design is driven by four science themes: dark energy and dark matter, galactic structure, transient objects, and the Solar System inventory. After a quick presentation of the LSST subsystems and of the project status, I will focus on the LSST cosmological probes, and more specifically on the large-scale structures and weak lensing science reaches. I will highlight the on-going preparation studies about the photometric redshift reconstruction for galaxies and the possibilities in terms of cross-correlations with other cosmological data and surveys. Experimental Collaboration LSST Primary author: NEVEU, Jeremy (LAL, Université Paris-Sud) Presenter: NEVEU, Jeremy (LAL, Université Paris-Sud) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 666 EPS-HEP 2017 / Report of Contributions Higgs decay into four leptons in th … Contribution ID: 844 Type: Parallel Talk Higgs decay into four leptons in the presence of dimension–six operators Friday, 7 July 2017 10:00 (15 minutes) We study the effects of dimension-six operators on the Higgs decay into four lepton channel. The calculation of new matrix elements has been performed in the so-called Higgs basis and it is implemented in a Monte Carlo event generator. A mapping between the parameters of the phenomenological Lagrangian and those of the Warsaw and SILH bases is also implemented. We consider all the relevant operators, both the CP-even and CP-odd operators, which contribute to this decay channel. Choosing suitable benchmark values for some relevant Wilson coefficients, we compare our predictions for partial decay width and some important kinematic distributions with the NLO (EW) SM predictions. A paper, collecting our results, has been recently published (arXiv:1703.06667) and will be submitted to an international peer-reviewed journal in the forthcoming days. Experimental Collaboration Primary authors: Dr BOSELLI, Stefano (INFN, Sez. di Pavia); CARLONI CALAME, Carlo Michel; MON- TAGNA, Guido (University of Pavia e INFN, Pavia (IT)); NICROSINI, Oreste (Dipartimento di Fisica Nu- cleare e Teorica); Dr PICCININI, Fulvio (INFN Pavia); Dr SHIVAJI, Ambresh (UCL, Louvain-la-Neuve) Presenter: Dr BOSELLI, Stefano (INFN, Sez. di Pavia) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 667 EPS-HEP 2017 / Report of Contributions Search for Time-Varying v¯e → v¯e … Contribution ID: 845 Type: Poster Presentation Search for Time-Varying v¯e → v¯e Oscillation Probability and Lorentz Violation at Daya Bay Experiment We discuss a search for a time-varying v¯e→v¯e oscillation probability and Lorentz violation at the Daya Bay Reactor Neutrino Experiment in the framework of the Standard Model Extension (SME). The experiment’s unique configuration of multiple baselines to three groups of nuclear reactors allows to constrain individual Lorentz-violating coefficients for the first time. In addition, we search for time-varying v¯e → v¯e oscillation probability in a model independent way using Fourier analysis. The status of both searches will be described in this poster Experimental Collaboration Daya Bay Primary author: Dr HIGUERA, Aaron (University of Houston) Presenter: Dr HIGUERA, Aaron (University of Houston) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 668 EPS-HEP 2017 / Report of Contributions Nonperturbative determination of … Contribution ID: 846 Type: Parallel Talk Nonperturbative determination of form factors for semileptonic Bs meson decays Thursday, 6 July 2017 18:30 (15 minutes) Investigating the phenomenology of semileptonic Bs meson decays allows to further constrain the Standard Model and explore new, independent channels to determine important parameters, like the CKM matrix elements |Vub| and |Vcb|. Given different systematics of Bs decays w.r.t. B decays, this may help to shed light on the long-standing discrepancy between inclusive and exclusive determinations of CKM matrix elements, on recently reported anomalies like in ratios of branching fractions, or on rare, GIM suppressed decays. Here we report on our lattice calculation based on the set of 2+1 flavor domain-wall Iwasaki gauge field configurations generated by the RBC-UKQCD collaboration using domain-wall light, strange, and charm quarks, and bottom quarks simulated with the relativistic heavy quark action. We present new results for semileptonic form factors for Bs → Dsℓν and Bs → Kℓν as well as for → + − ∗ Bs ϕℓ ℓ and will give an outlook on determining the ratios R(Ds) and R(Ds ) as well as on (∗) + − form factors for Bs → K ℓ ℓ decays. Experimental Collaboration Primary author: WITZEL, Oliver (University of Edinburgh) Presenter: WITZEL, Oliver (University of Edinburgh) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 669 EPS-HEP 2017 / Report of Contributions Astrophysical and cosmological re … Contribution ID: 847 Type: Parallel Talk Astrophysical and cosmological results from compact binary coalescences Friday, 7 July 2017 16:45 (15 minutes) Gravitational-wave astronomy has made a tremendous stride forward with detections during the first observing run of the Advanced Laser Interferometer Gravitational-wave Observatory (LIGO). The signals have been identified as originating from the merger of black holes, whose parameters it was possible to infer. This discovery has profound implications. Gravitational waves provide information on some of the most energetic astrophysical events, revealing unique insights into the nature of gravity and of our universe. In this talk I will describe how gravitational-wave signals are studied, and discuss the results of this analysis on LIGO’s first observations. Experimental Collaboration LIGO Virgo Collaboration Presenters: Dr RAYMOND, Vivien (Max Planck Institute for Gravitational Physics); RAYMOND, Vivien (Max Planck Institute for Gravitational Physics) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 670 EPS-HEP 2017 / Report of Contributions The process of Coulomb dissociati … Contribution ID: 848 Type: Poster Presentation The process of Coulomb dissociation of weakly bound relativistic hypernuclei within the two-cluster model Using the analogy with the problem of ionization and excitation of atoms at the propagation of relativistic charged particles through matter, the process of Coulomb dissociation of weakly bound relativistic nuclei and hypernuclei is theoretically investigated in the framework of the two-cluster deuteron-like model. Explicit expressions for the total cross-section of Coulomb disintegration of weakly bound systems are derived, taking into account the corrections connected with the finite size of the target nucleus; numerical estimates for the Coulomb dissociation of relativistic 3 6 hypernuclei HΛ and He Λ are performed. It is shown that, due to the sharp dependence of the cross-section of Coulomb dissociation upon the binding energy, the experimental measurement of this cross-section in the case of weakly bound relativistic nuclei and hypernuclei allows one to determine the values of binding energy for these systems. Experimental Collaboration Primary authors: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ); Dr LYUBOSHITZ, Vladimir (Joint Institute for Nuclear Research, Dubna) Presenter: Dr LYUBOSHITZ, Valery (Joint Institute for Nuclear Research, Dubna ) Session Classification: Poster session Track Classification: QCD and Hadronic Physics October 6, 2021 Page 671 EPS-HEP 2017 / Report of Contributions Evolution of the Reactor Antineut … Contribution ID: 849 Type: Parallel Talk Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay Thursday, 6 July 2017 10:15 (15 minutes) The Daya Bay Reactor Neutrino Experiment consists of eight antineutrino detectors placed atdif- ferent baselines from six 2.9 GWth nuclear reactors. In this talk, I will present the evolution of the reactor antinetrino flux and spectrum with a 2.2 million inverse beta decay (IBD) sample collected from the Daya Bay’s near detectors over multiple fuel cycles in 1230 days. In addition to the dis- agreement of the observed flux and spectrum with reactor model predictions, a3.1σ discrepancy in the antineutrino flux variation with respect to the reactor fuel composition is observed. This discrepancy indicates a 7.8% overestimation of the predicted antineutrino flux from 235U, suggest- ing that this fission isotope could be the primary contributor to the reactor antineutrino anomaly. Experimental Collaboration Daya Bay Primary author: Dr TSANG, Ka Vang (SLAC) Presenter: Dr TSANG, Ka Vang (SLAC) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 672 EPS-HEP 2017 / Report of Contributions Energy and rapidity dependence of … Contribution ID: 851 Type: Poster Presentation Energy and rapidity dependence of pion production at relativistic energies using Tsallis statistics Transverse momentum distributions of pions produced in relativistic nuclear collisions (p-p, Cu- Cu, Pb-Pb, Au-Au) at various energies including BES data are studied using Tsallis distribution as a parametrization. We will present the energy dependence and collision centrality of the Tsallis fit parameters, Tsallis temperature, volume and non-extensivity parameter, a parameter character- izing the degree of non-equilibrium for the systems produced in these collisions. Rapidity depen- dence of the Tsallis parameters is investigated using BRAHMS data and it is found that deviations from Boltzmann statistics are decreasing with rapidity, temperature values are increasing with rapidity, but the T/cosh(y) ratio is constant as a function of rapidity. The physics implications of these results on the collision dynamics will be discussed. Experimental Collaboration Primary authors: RISTEA, Oana (University of Bucharest, Faculty of Physics); Dr JIPA, Alexandru (University of Bucharest, Faculty of Physics); Dr RISTEA, Catalin (Institute of Space Science, Bucharest-- Magurele, University of Bucharest); Dr LAZANU, Ionel (University of Bucharest, Faculty of Physics); Dr CALIN, Marius (University of Bucharest, Faculty of Physics); Dr ESANU, Tiberiu (National Institute of Nuclear Physics and Engineering Horia Hulubei, Magurele) Presenter: RISTEA, Oana (University of Bucharest, Faculty of Physics) Session Classification: Poster session Track Classification: Heavy Ion Physics October 6, 2021 Page 673 EPS-HEP 2017 / Report of Contributions Soft gluon resummation for the as … Contribution ID: 852 Type: Parallel Talk Soft gluon resummation for the associated production of a top quark pair with a W or Z boson at the LHC Saturday, 8 July 2017 09:30 (15 minutes) The measurements of associated production of a massive gauge boson with a top-antitop quark pair at the LHC provide an important test of the Standard Model, in particular of the top quark couplings. To increase the precision of the theoretical predictions beyond NLO, a class of logarithmic corrections can be taken into account with the help of resummation methods. In this talk results for soft gluon resummation at fixed invariant mass for pp → ttZ¯ /W will be presented. The resummed results are matched to the NLO predictions and include terms beyond next-to-leading logarithmic accuracy. Numerical predictions for the total inclusive cross sections and the invariant mass distributions at the LHC will be discussed, together with estimates of their theoretical errors . Experimental Collaboration Primary authors: SCHWARTLÄNDER, Daniel (University of Münster); THEEUWES, Vincent (SUNY Buffalo, USA) Co-authors: KULESZA, Anna (University of Münster, Germany); MOTYKA, Leszek (Jagiellonian University, Cracow, Poland); STEBEL, Tomasz (Institute for Nuclear Physics, Cracow, Poland) Presenter: SCHWARTLÄNDER, Daniel (University of Münster) Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 674 EPS-HEP 2017 / Report of Contributions The NEXT double beta decay expe … Contribution ID: 853 Type: Parallel Talk The NEXT double beta decay experiment Friday, 7 July 2017 16:30 (15 minutes) NEXT (Neutrino Experiment with a Xenon TPC) aims to observe the neutrinoless double beta decay of Xe-136 in a high-pressure gas xenon Time Projection Chamber using electroluminescence to amplify the signal from ionization. The two main advantages of this technology are ahigh energy resolution and the possibility of reconstructing the electron tracks in events with energies close to the Q-value of the decay to use it to distinguish signal (two electrons) from background (single electron). NEXT-100 is an electroluminescent, asymmetric TPC which is going to host 100 kg of the Xe-136 isotope at 15 bar of pressure. On one side, a sparse array of photomultipliers records both the pri- mary scintillation signal, which gives the starting time of the event, and the electroluminescence signal, which gives a precise measurement of the total deposited energy. On the other side, a dense grid of silicon photomultipliers provides the reconstruction of the elec- tron tracks. Being able of reconstructing the position of a track is doubly useful: one hand, it allows the correction of the energy of the event, which is distortioned according to the position, and on the other hand it provides an extra handle for background rejection, since a two-electron track and a single-electron track show higher energy density at both ends, and only at one end, respectively. After a protoyping period (2009-2014) NEXT has completed the construction and started theoper- ation of its first phase (NEW) in the Canfranc Underground Laboratory, in the Spanish Pyrenees, with the objectives of measuring the NEXT background model and the two-neutrino mode of the double beta decay. In this talk I will describe the NEXT concept and present the latest results of the NEW detector. Experimental Collaboration NEXT Primary author: FERRARIO, Paola (Univ. of Valencia and CSIC (ES)) Presenter: FERRARIO, Paola (Univ. of Valencia and CSIC (ES)) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 675 EPS-HEP 2017 / Report of Contributions Searching for massless Dark Photo … Contribution ID: 854 Type: Parallel Talk Searching for massless Dark Photons at LHC via Higgs boson production Thursday, 6 July 2017 17:30 (15 minutes) Dark photons¯mediating long-range forces in a dark sector are predicted by various new physics scenarios, and are being intensively searched for in experiments. Thanks to the non-decoupling properties of the Higgs boson, BR values of Higgs decaying into a photon plus darkphoton H → γγ¯ up to a few percent are possible for a massless dark photon, even for heavy dark-sector scenar- ios. The corresponding signature consists (for a Higgs boson at rest) of a striking monochromatic photon with energy Eγ = mH /2, and similar amount of missing energy. We perform a model in- dependent analysis at the LHC of both the gluon-fusion and VBF Higgs production mechanisms at 14 TeV, including parton-shower effects, and updating our previous parton-level analysis at 8TeV in the gluon-fusion channel by a more realistic background modeling. We find that a 5σ sensitivity can be reached in the gluon-fusion channel for BR(H → γγ¯)0.1% with an integrated luminosity of L 300fb−1. The corresponding VBF reach is instead restricted to 1%. Such decay ratescanbe naturally obtained in dark-photon scenarios arising from unbroken U(1)F models explaining the origin and hierarchy of the Yukawa couplings, strongly motivating the search for this exotic Higgs decay at the LHC. Experimental Collaboration Primary authors: Dr GABRIELLI, Emidio (University of Trieste); Dr BISWAS, Sanjoy (KIAS); Dr HEIKINHEIMO, Matti (Helsinki Institute of Physics); Dr MELE, Barbara (INFN) Presenter: Dr MELE, Barbara (INFN) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 676 EPS-HEP 2017 / Report of Contributions PROSPECT: The Precision Reactor … Contribution ID: 856 Type: Parallel Talk PROSPECT: The Precision Reactor Oscillation and Spectrum Experiment Friday, 7 July 2017 10:15 (15 minutes) PROSPECT is a reactor antineutrino experiment consisting of a segmented 6Li-loaded liquid scin- tillator antineutrino detector designed to probe short-baseline neutrino oscillations and precisely measure the reactor antineutrino spectrum. The experiment will be located at the High Flux Iso- tope Reactor (HFIR) at Oak Ridge National Lab. The three ton detector will be located 7-12m from the compact, highly enriched uranium HFIR core. Over the past three years, PROSPECT has deployed multiple detectors at HFIR and Yale University to understand the local background en- vironment and to demonstrate active and passive background rejection. Measuring the neutrino spectrum from 235U at a range of baselines will give insight into the recent reactor spectrum dis- crepancies, provide an important benchmark for future reactor experiments, and will probe the eV-scale sterile neutrino best-fit region at 3sigma within one year of operation at HFIR. Inthis talk, we will discuss the design, experimental program, and discovery potential of the experiment. Experimental Collaboration PROSPECT Collaboration Primary author: Dr MARTINEZ CAICEDO, David (Illinois Institute of Technology) Presenter: Dr MARTINEZ CAICEDO, David (Illinois Institute of Technology) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 677 EPS-HEP 2017 / Report of Contributions — Contribution ID: 857 Type: Parallel Talk — Friday, 7 July 2017 18:00 (15 minutes) Experimental Collaboration CDF Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 678 EPS-HEP 2017 / Report of Contributions Leptogenesis via varying Weinber … Contribution ID: 858 Type: Parallel Talk Leptogenesis via varying Weinberg operator Saturday, 8 July 2017 12:45 (15 minutes) I will talk about a totally new mechanism of leptogenesis. It requires only a time-varying Weinberg operator. The Weinberg operator is well-known for the motivation of generating light neutrino masses. It violates lepton number and can provide non-equilibrium dynamics in the early universe due to the suppression of tiny neutrino masses. A lot of underlying symmetries, e.g., B-L symmetry and flavour symmetries, have been proposed in the lepton sector. These symmetries strongmo- tivate the existence of phase transitions at high scales. During the phase transition, the coupling of the Weinberg operator is time-dependent, and the lepton asymmetry is generated by the inter- ference of the Weinberg operator at different times. Any heave BSM particles, e.g., right-handed neutrinos, are not necessary in this mechanism. Experimental Collaboration Primary author: ZHOU, Ye-Ling (Durham University) Co-authors: PASCOLI, Silvia (University of Durham (GB)); TURNER, Jessica (Durham Univer- sity) Presenter: ZHOU, Ye-Ling (Durham University) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 679 EPS-HEP 2017 / Report of Contributions A Search for Sterile Neutrinos with … Contribution ID: 859 Type: Parallel Talk A Search for Sterile Neutrinos with SoLid Friday, 7 July 2017 09:30 (15 minutes) The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillation at veryshort baseline and perform a precise measurement of the 235U anti- e spectrum at SCK•CEN BR2 in Belgium. A way to test this hypothesis is to look for distortions of the anti-neutrino energy caused by oscillation from active to sterile neutrino at several close stand-off distances ( ∼ 6-9m) from a compact reactor core. In addition the so-called “bump at 5 MeV”, can be tested at a almost pure U235 neutrino source with SoLid at SCK•CEN BR2 research reactor. A novel approach to measuring reactor anti- neutrinos was developed based on an innovative sand- wich of composite Polyvynil-Toluene and LiF:ZnS scintillators. High experimental sensitivity can be achieved with the combination of high granularity, high neutron-gamma discrimination us- ing 6LiF:ZnS(Ag) scintillator and precise localization of the inverse beta decay products. We will describe the principle of detection, the detector design and we will focus on the performance of the full scale SoLid prototype module installed at BR2 early 2015 demonstrating the technology and the segmentation capabilities in terms of background rejection. We will present first results on selecting inverse beta decay candidates using the first data set collected with the SM1 module in 2015, and will show the physics reach of the next phase that will start data taking in mid 2017. Experimental Collaboration The SoLid Collaboration Primary author: Dr YERMIA, Frederic (Université de Nantes) Presenter: Dr YERMIA, Frederic (Université de Nantes) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 680 EPS-HEP 2017 / Report of Contributions Studies for Standard Model Higgs … Contribution ID: 860 Type: Poster Presentation Studies for Standard Model Higgs Decaying to two pseudoscalar light bosons with final states two muons and two taus, in pp colisions using the CMS detector Searches for exotic decay of the scalar Higgs boson to a pair of light pseudoscalar α bosons, which subsequently decay into pairs of muons and taus are performed using data collected by the CMS Experiment at centre-of-mass energies 8 and 13 TeV in addition to data based on future runs. This scenario is modivated by the 2HDM+S model which predicts the existence of supersymmetric higgs bosons. For the decay channel h->αα->mmττ TYPE III has the largest braching fraction. Due to the short lifetime of taus we study 6 different final states depending on whether thetau leptons decay leptonicaly or hadronicaly: mmτeτe , mmτeτμ , mmτeτh, mmτμτμ, mmτμτh and mmτhτh. Pseudoscalar boson masses between 20 and 60 GeV are promped. The estimation of the background contribution from experimental data and the contribution of theoretical and experi- mental uncertainties will be also addressed. A possible discovery of a scalar or pseudoscalar Higgs Boson would constitute a decisive test for 2HDM+S model. Experimental Collaboration CMS Primary author: CMS COLLABORATION Presenter: ERODOTOU, Eleni (University of Cyprus (CY)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 681 EPS-HEP 2017 / Report of Contributions Analysis of ttH(bb) with BDT, ME … Contribution ID: 861 Type: Poster Presentation Analysis of ttH(bb) with BDT, MEM and DNN techniques with CMS Latest 13 TeV results of CMS searches for the Higgs boson produced in association with top quarks and decaying to b quarks will be presented. This poster will focus on the semi-leptonic and di- leptonic channels with the matrix element method, BDT and DNN discriminants. Experimental Collaboration Presenter: RIEGER, Marcel (Rheinisch-Westfaelische Tech. Hoch. (DE)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 682 EPS-HEP 2017 / Report of Contributions The SoLid short baseline neutrino … Contribution ID: 862 Type: Parallel Talk The SoLid short baseline neutrino detector Thursday, 6 July 2017 10:45 (15 minutes) The SoLid short baseline reactor neutrino experiment consists of a highly segmented plasticscin- tillator detector with a fiducial mass of 2 ton. Its main purpose is to prove or rule out the existence 2 of sterile neutrinos corresponding to δM 2 values of order 1eV . The covered baseline ranges be- tween 6 and 9 meters and is in-line with the compact core of the 60MW BR2 reactor of the Belgian Nuclear Research Centre. The experiment will come online in the summer of 2017 and will recon- struct over 50.000 neutrino events per year, based on the inverse beta decay process. In this talk we will review the detector technology and several improvements made to the original design, based on the physics and operational performance of a 320kg full size prototype module that took data at the same site in 2015. When available, we will also present a preview of the commissioning data of the final design de- tector system, that should come online around the time of this conference. Experimental Collaboration The SoLid Collaboration Primary author: Mr PESTEL, Valentin (LPC Caen) Presenter: Mr PESTEL, Valentin (LPC Caen) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 683 EPS-HEP 2017 / Report of Contributions Search for MSSM Higgs boson dec … Contribution ID: 863 Type: Poster Presentation Search for MSSM Higgs boson decaying to a pair of tau leptons in CMS The latest results of the search for MSSM Higgs boson decaying into two tau leptons withthefull 2016 data will be presented. The analysis is performed using the dataset recorded by theCMS experiment at the LHC from pp collisions at centre-of-mass energies of 13 TeV corresponding to an integrated luminosity of 35.9/fb. Experimental Collaboration Presenter: WEN, Yiwen (Deutsches Elektronen-Synchrotron (DE)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 684 EPS-HEP 2017 / Report of Contributions Search for the standard model Hig … Contribution ID: 864 Type: Poster Presentation Search for the standard model Higgs boson produced in vector boson fusion and decaying to bottom quarks with CMS A search for the standard model Higgs boson is presented in the Vector Boson Fusion production channel with decay to bottom quarks. A data sample comprising 35.9 fb^−1 of proton-proton collision at sqrt(s) = 13 TeV collected during the 2016 running period has been analyzed. Production upper limits at 95% Confidence Level are derived for a Higgs boson mass of 125 GeV, as well asthe fitted signal strength relative to the expectation for the standard model Higgs boson. Resultsare also combined with the ones obtained with 2015 sqrt(s) = 13 TeV data, and Run1 sqrt(s) = 8 TeV data collected in 2012. Experimental Collaboration Presenter: CHERNYAVSKAYA, Nadezda (Eidgenoessische Tech. Hochschule Zuerich (CH)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 685 EPS-HEP 2017 / Report of Contributions Measurement of very forward jets … Contribution ID: 865 Type: Parallel Talk Measurement of very forward jets in p-Pb data at CMS Friday, 7 July 2017 17:00 (15 minutes) We present results on the measurement of very forward jets in p-Pb data with the CASTOR calorimeter in the CMS experiment at 5 TeV. Experimental Collaboration CMS Primary author: CMS COLLABORATION Presenter: VAN MECHELEN, Pierre (University of Antwerp (BE)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 686 EPS-HEP 2017 / Report of Contributions Muon g-2 and dark matter in mod … Contribution ID: 866 Type: Parallel Talk Muon g-2 and dark matter in models with vector-like fermions Friday, 7 July 2017 18:00 (15 minutes) We analyze the phenomenological status of several models of BSM physics explaining the muon g-2 anomaly and the relic density of dark matter. We consider scenarios requiring extra vector-like matter, some of which are based on supersymmetry. We confront the models with the latestbounds from the LHC 14 TeV run, direct and indirect searches for dark matter, and precision tests of the electroweak theory, highlighting viable regions of the parameter space and expected signatures in future experiments. Experimental Collaboration Primary author: SESSOLO, Enrico Maria (NCBJ, Warsaw) Co-authors: KOWALSKA, Kamila (TU Dortmund); DARMÉ, Luc (UPMC Paris 6); Dr CHOUDHURY, Arghya (University of Sheffield); TROJANOWSKI, Sebastian (National Centre for Nuclear Research, Poland); ROSZKOWSKI, Leszek Presenter: SESSOLO, Enrico Maria (NCBJ, Warsaw) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 687 EPS-HEP 2017 / Report of Contributions Ultra long-lived particles searches … Contribution ID: 867 Type: Poster Presentation Ultra long-lived particles searches with MATHUSLA Many extensions of the Standard Model (SM) include particles that are neutral, weakly coupled, and long-lived that can decay to final states containing several hadronic jets. Long-lived particles (LLPs) can be detected as displaced decays from the interaction point, or missing energy if they escape. ATLAS and CMS have performed searches at the LHC and significant exclusion limits have been set in recent years. However, the current searches performed at colliders have limitations. An LLP does not interact with the detector and it is only visible once it decays. Unfortunately, no existing or proposed search strategy will be able to observe the decay of non-hadronic electrically neutral LLPs with masses above ~GeV and lifetimes near the limit set by Big Bang Nucleosynthesis (cτ~107 − 108 m). Therefore, ultra-long-lived particles (ULLPs) produced at the LHC will escape the main detector with extremely high probability. In this talk we describe the concept of the MATHUSLA surface detector (MAssive Timing Ho- doscope for Ultra Stable neutraL pArticles), which can be implemented with existing technology and in time for the high luminosity LHC upgrade to find such ultra-long-lived particles, whether produced in exotic Higgs decays or more general production modes. The MATHUSLA detector will consist of resistive plate chambers (RPC) and scintillators with a total sensitive area of 200x200 m2. It will be installed on the surface, close to the ATLAS or CMS detectors. A small-scale test detector (~6 m2) will be installed on the surface above ATLAS in early summer 2017. It will consist of three layers of RPCs used for timing/tracking and two layers of scintilla- tors for timing measurements. It will be placed above the ATLAS interaction point to estimate cosmic backgrounds and proton-proton backgrounds coming from ATLAS during nominal LHC operations. We will report on the status of the test detector, on the on-going background studies, and plans for the MATHUSLA detector. Experimental Collaboration Primary author: ALPIGIANI, Cristiano (University of Washington, Seattle) Presenter: ALPIGIANI, Cristiano (University of Washington, Seattle) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 688 EPS-HEP 2017 / Report of Contributions The five-loop beta function inQCD Contribution ID: 868 Type: Parallel Talk The five-loop beta function in QCD Friday, 7 July 2017 11:43 (13 minutes) In this talk I will present a new result for the beta function in QCD, valid for a general gauge group. I will briefly summarise the methods which were used to obtain this result and explain itsimpact on low energy strong coupling extractions and precision observables at NNNNLO in perturbative QCD, such as the Higgs decay width and the total cross section for e+ e- to Hadrons. Experimental Collaboration Primary authors: VOGT, Andreas (University of Liverpool); RUIJL, Ben (Nikhef); HERZOG, Franz (Nikhef); VERMASEREN, Jozef Anton; UEDA, Takahiro Presenter: HERZOG, Franz (Nikhef) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 689 EPS-HEP 2017 / Report of Contributions Testing the strong-field dynamics … Contribution ID: 869 Type: Parallel Talk Testing the strong-field dynamics of general relativity with gravitational wave signals from compact binary coalescences Friday, 7 July 2017 16:30 (15 minutes) The observations of the presumed binary black hole coalescences GW150914 and GW151226 dur- ing the first observing run of Advanced LIGO have allowed us to probe the genuinely strong-field dynamics of Einstein’s general theory of relativity (GR) for the first time. We give a brief overview of the tests carried out on the detected signals, which showed consistency with GR within the mea- surement uncertainties. As the detectors undergo further upgrades, more and louder signals are likely to be observed. This will enable us to not only put tighter constraints on the inspiral-merger- ringdown dynamics of the binary coalescence process, but also more directly probe the nature of the compact objects themselves, in complementary ways. During inspiral, massive objects that deviate from standard black holes (e.g. boson stars or dark matter stars) may give away their non- standard nature through tidal effects. Observation of the “ringdown” of the merger remnant allows for a test of the black hole no-hair theorem. Finally, certain quantum modifications to black holes (e.g. firewalls) are speculated to have macroscopic consequences, in the form of gravitational wave “echoes”, or bursts of radiation that appear at regular time intervals after the ringdown has ended. Thus, the direct observation of gravitational waves opens up unique possibilities to putideasin fundamental physics and cosmology to the test. Experimental Collaboration Virgo Collaboration Primary author: GHOSH, Archisman (Nikhef) Presenter: GHOSH, Archisman (Nikhef) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 690 EPS-HEP 2017 / Report of Contributions Measurements of charm meson pr … Contribution ID: 870 Type: Poster Presentation Measurements of charm meson production in p+p, p+Au and Au+Au collisions by the STAR experiment Charm quarks possess large masses and thus they are expected to be primarily produced at the initial stages of heavy-ion collisions. Hot and dense nuclear matter, usually referred to as the Quark-Gluon Plasma (QGP), can also be created in these collisions. Therefore, the QGPcanbe studied using charm quarks as penetrating probes via the in-medium energy loss, which is deeply related to the intrinsic properties of the medium. In particular, a mass ordering of the parton energy loss in the hot medium is predicted, i.e. heavy-flavour quarks are expected to lose less energy than light quarks and gluons. Measurements of charm meson production in heavy-ion collisions provide a great opportunity to study the charm quark energy loss in the medium, and thus the QGP properties. D0 D± D∗± In this presentation, we will report the most√ recent measurements of , and production in p+p, p+Au and Au+Au collisions at sNN = 200 GeV. These mesons are reconstructed via their hadronic decay channels, where the daughter particles can be tracked and identified with excellent precision by the STAR experiment at RHIC. Measurements of D meson production in p+p collisions provide a baseline for the similar measurements in p+Au and Au+Au collisions to quantify the cold and hot nuclear matter effects. At high transverse momentum region andin central Au+Au collisions, D meson production is strongly suppressed compared to that in p+p collisions, indicating substantial charm quark energy loss in the medium. These results will be compared to those of light hadrons as well as theoretical calculations. Experimental Collaboration Primary author: KRAMARIK, Lukas (Czech Technical University (CZ)) Presenter: KRAMARIK, Lukas (Czech Technical University (CZ)) Session Classification: Poster session Track Classification: Heavy Ion Physics October 6, 2021 Page 691 EPS-HEP 2017 / Report of Contributions Limits on Torsion parameters from … Contribution ID: 872 Type: Parallel Talk Limits on Torsion parameters from ttbar production at LHC Friday, 7 July 2017 12:15 (15 minutes) Torsion models constitute a well known class of extended quantum gravity models. In this work, one investigates phenomenological consequences of a torsion field interacting in different ways with top quarks at LHC. A torsion field could appear as a new heavy state characterized by itsmass and couplings to fermions. This new state would form a resonance decaying into a top anti-top pair. The latest ATLAS results with 13 TeV data are used to set limits on torsion parameters. The integrated luminosity needed to observe torsion resonance at the next LHC upgrades arealso evaluated, considering different values for the torsion mass and its couplings to Standard Model fermions. Finally, prospects for torsion exclusion at the future LHC phase II and phase III are obtained. Experimental Collaboration Primary authors: NEPOMUCENO, Andre (Universidade Federal Fluminense); MARROQUIM, Fer- nando (Instituto de Fisica); BARROS DO VALE, Aline (Universidade Federal de Sao Joao del-Rei - UFSJ (BR)) Presenter: NEPOMUCENO, Andre (Universidade Federal Fluminense) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 692 EPS-HEP 2017 / Report of Contributions The 17 MeV Anomaly in Beryllium … Contribution ID: 873 Type: Poster Presentation The 17 MeV Anomaly in Beryllium Decays and U(1) Portal to Dark Matter The experiment of Krasznahorkay et al observed the transition of a 8Be excited state to itsground state and accompanied by an emission of e+e− pair with 17 MeV invariant mass. This 6.8σ anomaly can be fitted by a new light gauge boson. We consider the new particle as a U(1) gauge boson,Z′, which plays as a portal linking dark sector and visible sector. In particular, we study the new U(1) gauge symmetry as a hidden or non-hidden group separately. The generic hidden U(1) model, referred to as dark Z model, is excluded by imposing various experimental constraints. On the other hand, a non-hidden Z′ is allowed due to additional interactions between Z′ and Standard Model fermions. We also study the implication of the dark matter direct search on such a scenario. We found the search for the DM-nucleon scattering excludes the range of DM mass above 500MeV. However, the DM-electron scattering for MeV-scale DM is still allowed by current constraints for non-hidden U(1) models. It is possible to test the underlying U(1) portal model by the future Si and Ge detectors with 5e− threshold charges. Experimental Collaboration Primary author: Prof. CHEN, Chian-Shu (Tamkang University) Presenter: Prof. CHEN, Chian-Shu (Tamkang University) Session Classification: Poster session Track Classification: Dark Matter October 6, 2021 Page 693 EPS-HEP 2017 / Report of Contributions High pT single identified particles … Contribution ID: 875 Type: Parallel Talk High pT single identified particles in various collision systems with the PHENIX detector at RHIC Thursday, 6 July 2017 17:45 (15 minutes) Jet quenching in the hot, dense medium formed in Au+Au collisions leads to the suppression of high pT particles which can be studied with the measurement of the leading hadrons, like π0. They can be used to investigate the mechanism of energy loss of partons in a QGP when varying the collision geometry. Asymmetric Cu+Au collisions provide a system with similar energy density but different colli- sion geometry when compared to Au+Au, with the same number of nucleon-nucleon collisions. Furthermore, at RHIC we can study different highly asymmetric collisions, such as p+Au, d+Au and 3He+Au. The observation of collective behavior in these systems suggests the creation ofa medium, but alternate explanations exist. The systematic study of the π0 production could give us a deeper understanding of the physics in these very asymmetric systems. π We present new measurements√ of 0 with PHENIX in the asymmetric collisions at midrapidity |η| < 0.35 with collision energy sNN = 200 GeV. Experimental Collaboration PHENIX collaboration Primary author: DEHMELT, Klaus (Stony Brook University USA) Presenters: DEHMELT, Klaus (Stony Brook University USA); DEHMELT, Klaus (State University of New York Stony Brook (US)); DEHMELT, Klaus (Stony Brook University USA) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 694 EPS-HEP 2017 / Report of Contributions Development of electronics and da … Contribution ID: 876 Type: Poster Presentation Development of electronics and data acquisition system for the J-PARC T59 (WAGASCI) experiment The J-PARC T59 experiment, named WAGASCI, is a neutrino detector with a water target, andit is planed to start taking the neutrino beam data from October 2017 at J-PARC neutrino beamline. Its goal is to measure the cross section ratio of charged current neutrino interaction on nucleus between water target and plastic target with the accuracy of a few percent. The detector adopts three-dimensional grid structure of 3-mm-thick scintillator bars around water and plastic targets, to obtain large angular acceptance. As a photodetector a 32-channel arrayed MPPC has been developed for the WAGASCI detector, and the total number of channels is 1280 for each module. In the J-PARC neutrino beamline, neutrinos are delivered with an 8-bunch structure with 581ns time gaps, every 2.48 seconds. There is a beam timing trigger delivered about 30us before neutrino arrives, in addition to a pre-beam trigger delivered exactly 100ms before the beam trigger. By using these two trigger signals, only the data around the neutrino beam will be recorded. Our front-end electronics is SPIROC2D, a product of Omega, which is an auto-triggered, bi-gain, 36- channel ASIC, allowing to measure the charge from one photoelectron to 2000 and the time with a 100ps accurate TDC. It contains a 16-deep analog memory array, which allows to store 16 hits in an acquisition gate. Front-end electronics boards have been developed with the SPIROC2D chip, and all necessary boards have already been fabricated. The back-end boards control the data output from the front-end ASIC and reception of trigger signals for neutrino beam. Their main functions are implemented into Spartan6 FPGAs, and its firmware have been developed. The data acquisition system has almost been completed, and its operation test has been performed with a test bench of scintillators and J-PARC neutrino beam in April 2017. In this presentation, the performance and status of the WAGASCI electronics and the data acquisition system will be described. Experimental Collaboration T2K, J-PARC T59 Primary author: Mr CHIKUMA, Naruhiro (The University of Tokyo) Co-authors: Mr HOSOMI, Fuminao (The University of Tokyo); Mr KOGA, Taiichiro (The Uni- versity of Tokyo); Mr TAMURA, Riku (The University of Tokyo); Prof. YOKOYAMA, Masahi (The University of Tokyo); Ms ANTONOVA, Maria (Institute for Nuclear Research of the Russian Academy of Science); IZMAYLOV, Alexander (INR RAS); Dr KHABIBULLIN, Marat (Institute for Nuclear Re- search (RU)); Mr KHOTJANTSEV, Alexey (Institute for Nuclear Research of the Russian Academy of Science); Mr KOSTIN, Andrey (INR RAS); KUDENKO, Yury (Russian Academy of Sciences (RU)); Mr MEFODIEV, Aleksandr (INR RAS); MINEEV, Oleg (Russian Academy of Sciences (RU)); Ms OVSJAN- NIKOVA, Tatiana (Institute for Nuclear Research of the Russian Academy of Science); Mr SUVOROV, Serget (INR RAS); YERSHOV, Nikolay; ISHIDA, Taku (KEK); KOBAYASHI, Takashi (KEK); Dr V CAO, Son (Kyoto University); Ms HIRAMOTO, Ayami (Kyoto University); Mr HAYASHINO, Tatsuya (Kyoto University); ICHIKAWA, Atsuko (Kyoto University); Mr NAKAMURA, Keigo (Kyoto Univer- sity); NAKAYA, Tsuyoshi (Kyoto University); QUILAIN, Benjamin; Mr BONNEMAISON, Alain (Lab- oratoire Leprince-Ringuet, Ecole Polytechnique); CORNAT, Remi Jean Noel (Centre National de la October 6, 2021 Page 695 EPS-HEP 2017 / Report of Contributions Development of electronics and da … Recherche Scientifique (FR)); DRAPIER, Olivier (CNRS); FERREIRA, Oscar (Unknown); Mr GASTALDI, Franck (Laboratoire Leprince-Ringuet, Ecole Polytechnique); GONIN, Michel (Laboratoire Leprince-Ringuet (LLR)-Ecole Polytechnique); Mr IMBER, James (Laboratoire Leprince-Ringuet, Ecole Polytechnique); Mr LICCIARDI, Matthieu (Laboratoire Leprince-Ringuet, Ecole Polytechnique); Mr MUELLER, Thomas (Laboratoire Leprince-Ringuet, Ecole Polytechnique); Mr VOLCY, Olivier (Laboratoire Leprince-Ringuet, Ecole Polytechnique); Mr AZUMA, Yuma (Osaka City University); Mr INOUE, Tsubasa (Osaka City University); Mr KIN, Ken’ichi (Osaka City University); Prof. SEIYA, Yoshihiro (Osaka City Univer- sity); Prof. YAMAMOTO, Kazuhiro (Osaka City University); BLONDEL, Alain (Universite de Geneve (CH)); CADOUX, Frank Raphael (Universite de Geneve (CH)); KARADZHOV, Yordan Ivanov (Uni- versite de Geneve (CH)); FAVRE, Yannick (Universite de Geneve (CH)); NOAH MESSOMO, Etam (Geneva university); Mr NICOLA, Laurent (University of Geneva); PARSA, Saba (Universite de Gen- eve (CH)); RAYNER, Mark Alastair (Universite de Geneve (CH)); HAYATO, Yoshinari (University of Tokyo); Prof. MINAMINO, Akihiro (Yokoyama National University) Presenter: Mr CHIKUMA, Naruhiro (The University of Tokyo) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 696 EPS-HEP 2017 / Report of Contributions SuperK-Gd Contribution ID: 878 Type: Parallel Talk SuperK-Gd Thursday, 6 July 2017 17:00 (15 minutes) The Super-Kamiokande (SK) Collaboration has committed to the the SuperK-Gadolinium project that, by dissolving a Gd salt at 0.2 % in mass in the SK water, will upgrade the detector to be able to identify neutrons with very high efficiency. The current expected time for refurbishment of SK and start of this new phase is 2018. In this talk we present the physics benefits of high efficiency neutron tagging in Super-Kamiokande, the very extensive R&D program followed towards the decision, and the most relevant steps in the implementation of the SuperK-gadolinium project. Experimental Collaboration Super-Kamiokande Primary author: LABARGA, Luis (UAM) Presenters: LABARGA, Luis (UAM); LABARGA , Luis (UAM) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 697 EPS-HEP 2017 / Report of Contributions Electroweak baryogenesis via top t … Contribution ID: 879 Type: Parallel Talk Electroweak baryogenesis via top transport Friday, 7 July 2017 10:15 (15 minutes) We study electroweak baryogenesis driven by up-type heavy quarks in a general two Higgs doublet model with CP invariant Higgs potential. With Higgs sector couplings and an additional top Yukawa coupling ρtt all of O(1) in strength, one naturally has sizable CP violation that fuels a cosmic baryon asymmetry. Even if ρtt vanishes, the flavor violating top-charm coupling ρtc can still lead to successful baryogenesis. Phenomenological consequences such as electron electric dipole moment, h → γγ, and the interplay with h → µτ and τ → µγ, are discussed. Experimental Collaboration Presenters: Prof. HOU, George W.S.; HOU, George Wei-Shu (National Taiwan University (TW)) Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 698 EPS-HEP 2017 / Report of Contributions Search for narrow resonances in d … Contribution ID: 880 Type: Poster Presentation Search for narrow resonances in dilepton mass spectra in p-p collisions at sqrt(s) = 13 TeV at CMS Many well established models extending beyond Standard Model (e.g. Grand Unified Theory, Se- quential Standard Model or models proposing extra spatial dimension(s)) predict the existence of new heavy neutral bosons that would decay in two leptons. A search for new narrow resonances, generically referred as Z’, in the dimuon decay channel has been performed using data collected√ by the CMS experiment in 2016 from proton - proton collisions at a center of mass energy of s = 13 TeV corresponding to an integrated luminosity of 36.3 fb−1. In the absence of a significant deviation from the standard model predictions, 95% confidence level limits are set on the ratio of the production cross section times branching fraction for high-mass resonances to that for the Z boson. For several models, lower limits on the resonance mass are derived. Experimental Collaboration Presenter: ERRICO, Filippo (Universita e INFN, Bari (IT)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 699 EPS-HEP 2017 / Report of Contributions Search for Supersymmetry with a … Contribution ID: 881 Type: Poster Presentation Search for Supersymmetry with a Highly Compressed Mass Spectrum in the Single Soft Lepton Channel with the CMS Experiment at the LHC Models with compressed mass spectra target a very interesting region of the SUSY parameter space and are very well motivated by theoretical considerations, such as dark matter constraints and naturalness. The presented analysis focuses on signal events containing a single low-momentum lepton and moderate missing transverse energy. The search targets a simplified model inwhich the signal consists of stop (supersymmetric partner of the top quark) pair-production, followed by 4-body decays into a lepton-neutrino (quark-antiquark) pair, a b-quark and a neutralino, which is considered the lightest supersymmetric particle (LSP), and with a mass gap between the stop and the LSP that is smaller than the W-boson mass. The LSPs and the neutrino escape the detector, leading to a missing transverse energy signature. Compressed regions are challenging to study, as the visible decay products have low momentum and generally do not pass detector acceptance thresholds. This difficulty can be mitigated by requiring the presence of an initial-state radiation jet, which boosts the system. The results are based on data from Run II of the Large Hadron Collider, recorded with the CMS detector at a centre-of-mass energy of 13 TeV. Experimental Collaboration Presenter: ZARUCKI, Mateusz (HEPHY) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 700 EPS-HEP 2017 / Report of Contributions More results from the OPERA exp … Contribution ID: 884 Type: Parallel Talk More results from the OPERA experiment. Thursday, 6 July 2017 10:00 (15 minutes) The OPERA experiment reached its main goal by proving the appearance of ντ in the CNGS νµ beam. A total sample of 5 candidates fulfilling the analysis defined in the proposal was detected with a S/B ratio of about ten allowing to reject the null hypothesis at 5.1 σ. The search has been ex- tended to ντ -like interactions failing the kinematical analysis defined in the experiment proposal to obtain a statistically enhanced, lower purity, signal sample. One such interesting neutrino inter- action with a double vertex topology is reported with a high probability of being a ντ interaction 2 with charm production. Based on the enlarged data sample the estimation of ∆m23 in appear- ance mode is presented. The search for νe interactions has been extended over the full data set with a more than twofold increase in statistics with respect to published data. The analysis of the νµ → νe channel is updated and the implications of the electron neutrino sample in the framework of the 3+1 sterile model is discussed. An analysis of νµ → ντ interactions in the framework of the sterile neutrino model has also been performed. Finally, the results of the analysis of the annual modulation of the cosmic muon rate is discussed. Experimental Collaboration OPERA Collaboration Primary author: SIRIGNANO, Chiara (University of Padova & INFN Padova) Presenter: SIRIGNANO, Chiara (University of Padova & INFN Padova) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 701 EPS-HEP 2017 / Report of Contributions Measurements of open charm had … Contribution ID: 886 Type: Parallel Talk Measurements of open charm hadron production in Au+Au collisions by the STAR experiment Thursday, 6 July 2017 15:15 (15 minutes) Charm quarks possess large masses and thus they are expected to be primarily produced at the initial stages of heavy-ion collisions. Hot and dense nuclear matter, usually referred to as the Quark-Gluon Plasma (QGP), can also be created in these collisions. Therefore, the QGPcanbe studied using charm quarks as penetrating probes via the in-medium energy loss, which is directly related to the intrinsic properties of the medium. In particular, a mass ordering of the parton en- ergy loss in the hot medium is predicted, i.e. heavy-flavor quarks are expected to lose less energy than light quarks. Measurements of charm meson production in heavy-ion collisions provide a great opportunity to study the charm quark energy loss in the medium, and thus the QGP prop- erties. Moreover, STAR has measured several species of charm hadrons and, therefore, can probe several modes of hadronization in the medium. In this presentation, we report the most recent 0 ± measurements of the production of D and D , as well as Ds, containing a strange quark, and Λ √the c baryon in Au+Au collisions at the center-of-mass energy per nucleon-nucleon collision of sNN = 200 GeV. These particles are reconstructed via their hadronic decay channels, where the daughter particles can be tracked and identified with excellent precision. Experimental Collaboration STAR collaboration Primary author: Mr SIMKO, Miroslav (Nuclear Physics Institute of The Czech Academy of Sci- ences) Presenters: Mr SIMKO, Miroslav (Nuclear Physics Institute of The Czech Academy of Sciences); SIMKO, Miroslav (Nuclear Physics Institute of the Czech Academy of Sciences (cz)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 702 EPS-HEP 2017 / Report of Contributions Dark matter and LHC: complemen … Contribution ID: 887 Type: Parallel Talk Dark matter and LHC: complementaries and limitations Thursday, 6 July 2017 17:15 (15 minutes) It is well known that dark matter density measurements, indirect and direct detection experiments, importantly complement the LHC in setting strong constraints on new physics scenarios. Yet, dark matter searches are subject to limitations which need to be considered for realistic analyses. For illustration, we explore the parameter space of the phenomenological MSSM and discuss the interplay of the constraints from dark matter searches and the LHC, and analyse the impact ofthe astrophysical uncertainties in some detail. Experimental Collaboration Primary authors: ARBEY, Alexandre (Lyon U. & CERN TH); ROBBINS, Glenn (Centre de recherche astrophysique de Lyon (FR)); BOUDAUD, Mathieu (LAPTh Annecy France); MAHMOUDI, Nazila (Uni- versite Claude Bernard-Lyon I (FR)) Presenter: ROBBINS, Glenn (Centre de recherche astrophysique de Lyon (FR)) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 703 EPS-HEP 2017 / Report of Contributions W boson polarization in vector bo … Contribution ID: 888 Type: Parallel Talk W boson polarization in vector boson scattering at the LHC Thursday, 6 July 2017 09:30 (15 minutes) Measuring the scattering of longitudinally-polarized vector bosons will represent a fundamental test of Electroweak Symmetry Breaking. In addition to the challenges provided by low rates and large backgrounds, there are conceptual issues which remain unresolved for the definition of a suitable signal. Since vector bosons are unstable and can only be observed through their decay products, the polarization states interfere among themselves. Moreover, already at tree level, there are diagrams which cannot be interpreted as production times decay of EW bosons but are necessary for gauge invariance. We discuss two possible ways to define a cross section for polarized W ’s. In both cases all non resonant diagram are dropped. In the first one, the mass of the ℓν pair is required to be close to MW . In the second one, an On–Shell Projection is performed. The two methods give comparable outcomes. We show that generating events with a specified W polarization and exact decription of its decay leads to a coherent definition of the polarization fractions. In most cases, the sum of polarized distributions reproduces accurately the exact results. In the absence of cuts this procedure reproduces the results of a standard projection on Legendre polynomials. While the latter cannot be employed in the presence of selection cuts on the charged leptons, a comparison of the data with singly polarized templates allows the extraction of the polarization fractions in a realistic environment. We have compared the decay distribution of the charged leptons, after acceptance cuts, in the SM, its Singlet extension and a Higgsless model. The normalized shapes are sufficiently similar to allow an almost model independent definition of the signal and measurement of the polarized components. The possibility of generating VBS events with a single W polarization has been introduced into PHANTOM. Experimental Collaboration Primary authors: BALLESTRERO, Alessandro (INFN Torino); MAINA, Ezio (Department of Physics - University of Torino); PELLICCIOLI, Giovanni (Department of Physics - University of Torino) Presenter: MAINA, Ezio (Department of Physics - University of Torino) Session Classification: Top and electroweak October 6, 2021 Page 704 EPS-HEP 2017 / Report of Contributions W boson polarization in vector bo … Track Classification: Top and Electroweak Physics October 6, 2021 Page 705 EPS-HEP 2017 / Report of Contributions Understanding cosmic ray small- … Contribution ID: 889 Type: Parallel Talk Understanding cosmic ray small-scale anisotropies Thursday, 6 July 2017 10:12 (30 minutes) The arrival directions of Galactic cosmic rays are highly isotropic. This is expected from thepres- ence of turbulent magnetic fields in our Galactic environment that repeatedly scatter charged cos- mic rays during propagation. However, various cosmic ray observatories have identified weak anisotropies of various angular sizes and with relative intensities of up to a level of 1 part in 1,000. Whereas large-scale anisotropies are generally predicted by standard diffusion models, the appear- ance of small-scale anisotropies down to an angular size of 10◦ is surprising. In this review, I summarise the current experimental situation and address some of the remaining questions in interpreting the observed large-scale anisotropies. I review some of the various suggestions for explaining the small-scale anisotropies, focussing on the promising idea that they are a direct re- flection of the particular realisation of the turbulent magnetic field in our Galactic neighbourhood. Experimental Collaboration Primary author: MERTSCH, Philipp Presenter: MERTSCH, Philipp Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 706 EPS-HEP 2017 / Report of Contributions Measurements of the Upsilon mes … Contribution ID: 890 Type: Parallel Talk Measurements of the Upsilon meson production in Au+Au collisions at the STAR experiment Thursday, 6 July 2017 11:30 (15 minutes) In ultra-relativistic heavy-ion collisions, creation of a novel state of matter—the quark-gluon plasma (QGP)—is expected. Studying the properties of this medium of deconfined quarks and gluons has been a focus of high energy nuclear physics and poses a significant experimental challenge. Among various probes, quarkonium production is a crucial one since their production is expected to be suppressed in the QGP due to the dissociation caused by the color screening effect, which is viewed as a direct evidence of the QGP formation. The dissociation process is dependent on the quarko- nium binding energy and thus occurs for different states at different temperatures. By measuring the “sequential melting” of different quarkonium states in the medium, constraints on theQGP temperature can be inferred. Υ √In this talk, we will present recent measurements on the production in Au+Au collisions at sNN = 200 GeV via both the di-muon and di-electron channels by the STAR experiment at RHIC. At RHIC energies, other effects affecting the quarkonium production—such as the inelastic inter- actions with final-state hadrons and coalescence of deconfined heavy quarks—are deemed much less significant for the Υ mesons than for the charmonia, which makes the bottomonium family a cleaner probe. The nuclear modification factors for both the ground and excited Υ states are reported as a function of collision centrality and transverse momentum, and compared with simi- Υ lar measurements at the LHC as√ well as theoretical calculations. Furthermore, the productions in p+p and p+Au collisions at sNN = 200 GeV are measured via the di-electron channel, which provide a refined p+p reference and quantification of the cold nuclear matter effect. Experimental Collaboration STAR Primary author: MATONOHA, Oliver (CTU Prague) Presenter: MATONOHA, Oliver (CTU Prague) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 707 EPS-HEP 2017 / Report of Contributions The NA62 Calorimeter Level 0 Tri … Contribution ID: 891 Type: Parallel Talk The NA62 Calorimeter Level 0 Trigger Operation and Performances Thursday, 6 July 2017 11:30 (15 minutes) The NA62 experiment at CERN SPS aims to measure the Branching Ratio of the very rarekaon decay K+ -> pi+ nu nubar collecting ~100 events with a 10% background to make a stringent test of the Standard Model in two years of data taking. The Calorimeter Level 0 Trigger is used to suppress one of the main backgrounds, the K+->pi+ pi0 decay, and to select events with a pi+ in the final state. The Calorimeter Level 0 Trigger identifies clusters in electromagnetic and hadronic calorimeters. It prepares time-ordered lists of reconstructed clusters together with the arrival time, position, and energy measurements of each cluster. It also provides trigger decisions based on complex energy and cluster multiplicity combinations. The main parameters of the trigger processor are the high design hit rate (30 MHz) andtherequired single cluster time resolution (1.5 ns). The calorimeter trigger processor is a parallel system composed of 37 boards, 111 mezzanines and 221 high-performance programmable devices housed in three 9U crates. The Calorimeter Level 0 Trigger also provides a coarse-grained readout of the calorimeters that might be used in software trigger levels. The NA62 experiment is currently taking data and the calorimetric trigger is used to suppressthe background coming from the K+ -> pi+ pi0 decay and to trigger on many other medium-rare and exotic decays. The design, operation and performances of the Calorimeter Level 0 Trigger are presented. Experimental Collaboration NA62 Primary authors: AMMENDOLA, Roberto (Universita e INFN Roma Tor Vergata (IT)); BAR- BANERA, Mattia (INFN Sezione di Pisa, Universita’ e Scuola Normale Superiore, P); Mr BATTISTA, Daniele (Department of Physics, University of Roma “Tor Vergata”, Rome, Italy and INFN — Sezione di Roma “Tor Vergata”, Rome, Italy); BIZZARRI, Marco (Universita e INFN (IT)); BONAIUTO, Vincenzo (Universita e INFN Roma Tor Vergata (IT)); CECCUCCI, Augusto (CERN); CHECCUCCI, Bruno (Uni- versita e INFN, Perugia (IT)); DE SIMONE, Nico (CERN); FANTECHI, Riccardo (Universita & INFN, Pisa (IT)); FEDERICI, Luca (INFN e Universita Roma Tor Vergata (IT)); FUCCI, Adolfo (Universita e INFN Roma Tor Vergata (IT)); LUPI, Matteo (Johann-Wolfgang-Goethe Univ. (DE)); PAOLUZZI, Gio- vanni (Universita e INFN Roma Tor Vergata (IT)); PAPI, Andrea (Universita e INFN, Perugia (IT)); PE- DRESCHI, Elena (Universita di Pisa & INFN (IT)); PIANDANI, Roberto (INFN Sezione di Pisa, Universita’ e Scuola Normale Superiore, P); PICCINI, Mauro (INFN - Sezione di Perugia (IT)); RYJOV, Vladimir (CERN); SALAMON, Andrea (INFN e Universita Roma Tor Vergata (IT)); SALINA, Gaetano (Istituto Nazionale di Fisica Nucleare); SARGENI, Fausto (Universita e INFN Roma Tor Vergata (IT)); SERGI, Antonino (University of Birmingham (GB)); SOLDI, Dario (Universita e INFN Torino (IT)); SPINELLA, October 6, 2021 Page 708 EPS-HEP 2017 / Report of Contributions The NA62 Calorimeter Level 0 Tri … Franco (Universita di Pisa & INFN (IT)); VENDITTI, Stefano (CAEN); ZAMKOVSKY, Michal (Charles University (CZ)) Presenter: SALAMON, Andrea (INFN e Universita Roma Tor Vergata (IT)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 709 EPS-HEP 2017 / Report of Contributions Results of transient GW searches … Contribution ID: 892 Type: Parallel Talk Results of transient GW searches with Advanced LIGO Friday, 7 July 2017 15:45 (15 minutes) The detection of gravitational waves from the merger of binary black holes during thefirstAd- vanced LIGO science runs has opened up a new field of astronomy, and a new window on the universe. During these runs, searches for different types of compact binaries are conducted. In this talk, I will review the detected black hole mergers, and discuss the implications of the non- detection of other transient source types, such as binary neutron stars and intermediate mass black holes, in the first science run. Experimental Collaboration Advanced LIGO - Virgo Primary author: PORTER, Ed (APC-Paris / CNRS) Presenter: PORTER, Ed (APC-Paris / CNRS) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 710 EPS-HEP 2017 / Report of Contributions Jets in QGP Contribution ID: 893 Type: Parallel Talk Jets in QGP Friday, 7 July 2017 14:30 (30 minutes) I will review the recent developments in the understanding of the dynamics of jets that propa- gate through QGP with particular emphasis on jet substructure. I will argue that substructure observables provide a novel direction in quenching studies. Experimental Collaboration Primary author: Dr TEIXEIRA DE ALMEIDA MILHANO, Guilherme (LIP-Lisbon & CERN TH) Presenter: Dr TEIXEIRA DE ALMEIDA MILHANO, Guilherme (LIP-Lisbon & CERN TH) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 711 EPS-HEP 2017 / Report of Contributions Can gauge theories of flavour be a … Contribution ID: 894 Type: Poster Presentation Can gauge theories of flavour be accessible at the LHC? There is no explanation in the Standard Model for the existence of families and for theirmass hierarchy. It is possible to think to some horizontal symmetries between families and their spon- taneous breakdown. Then new interactions will arise and compositeness limits must be respected. But the more stringent limits may arise from flavour changing neutral currents and CP-violation. However there could be suppression effects due to custodial symmetry. It results that the horizontal gauge bosons mediating flavour changing transitions between families can be as light as TeV, without contradiction with the experimental limits of the flavour changing processes (kaon system, heavy neutral meson systems, muon decay, tau decay, etc.). Thus they can be detectable at the LHC. Experimental Collaboration Primary author: BELFATTO, Benedetta (Gran Sasso Science Institute & INFN) Presenter: BELFATTO, Benedetta (Gran Sasso Science Institute & INFN) Session Classification: Poster session Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 712 EPS-HEP 2017 / Report of Contributions Working with the media - The role … Contribution ID: 895 Type: Parallel Talk Working with the media - The role of the Public Information Officer - Saturday, 8 July 2017 12:15 (15 minutes) Informing science and also nurturing the sympathy to scientific activities could be an important background to raise the fund, recruit staff and acquire the land to build the large research infras- tructures. Mass media plays an important role in this communication, that is, the media relation is very important for scientific community to build good relation with the general public, and public information officer (PIOs) play a big role and help in the relations. Then what is “media relations”? It is the activity to build trusting relationships with reporters, and foster mutual understanding, sometimes acting as source of informal advice. It is to proactively inform the media of news, by issuing press releases and so on. It is to disseminate the news, by interviews by email or phone, face to face, or in front of the camera. When informing the media of science, there are some points to note. First, scientists are encour- aged to show the overview or the background of science or the importance or the meaning of it, and to make it clear what is the point. Actually the media report not only scientific results. They cover how the research activities are going on, such like construction of the facilities. They are also interested in the humanities of scientists itself or the background of the scientific activities. And PIOs will help scientists. PIOSs will build relationships with the media, by providing back- ground and identifying the key points. They supplement what scientists did not say. They translate the jargons. They know how to consider that there are some cultural or local differences inreport- ing. As such, PIOs try to open the door and welcome the media to science. In this way, scientists can rely on PIOs in making media relations in making better relations be- tween scientific community and the general public. It would be better to consider that there are some cultural or local differences in reporting. Experimental Collaboration Primary author: OKADA, Saeko (KEK) Presenter: OKADA, Saeko (KEK) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 713 EPS-HEP 2017 / Report of Contributions Search for eV Sterile Neutrinos – T … Contribution ID: 896 Type: Parallel Talk Search for eV Sterile Neutrinos – The Stereo Experiment Friday, 7 July 2017 09:45 (15 minutes) In the recent years, major milestones in neutrino physics were accomplished at nuclear reactors: the smallest neutrino mixing angle θ13 was determined with high precision and the emitted an- tineutrino spectrum was measured at unprecedented resolution. However, two anomalies, the first one related to the absolute flux and the second one to the spectral shape, have yet to be solved. The flux anomaly is known as the Reactor Antineutrino Anomaly and could be caused bytheex- istence of a light sterile neutrino eigenstate participating in the neutrino oscillation phenomenon. Introducing a sterile state implies the presence of a fourth mass eigenstate, while global fits favor oscillation parameters around sin2 2θ = 0.09 and ∆m2 = 1.8 eV2. The Stereo experiment was built to finally solve this puzzle. It is one of the first runningexper- iments built to search for eV sterile neutrinos and takes data since end of 2016 at ILL Grenoble (France). At a short baseline of 10 meters, it measures the antineutrino flux and spectrum emitted by a compact research reactor. The segmentation of the detector in six target cells allows forin- dependent measurements of the neutrino spectrum at multiple baselines. An active-sterile flavor oscillation could be unambiguously detected, as it distorts the spectral shape of each cell’s mea- surement differently. This talk will give an overview on the Stereo experiment, along with details on the detector design, detection principle and the current status of data analysis. Experimental Collaboration Primary author: Dr HASER, Julia (MPIK Heidelberg) Presenter: Dr HASER, Julia (MPIK Heidelberg) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 714 EPS-HEP 2017 / Report of Contributions News on spectra from the NA61/S … Contribution ID: 897 Type: Parallel Talk News on spectra from the NA61/SHINE experiment. Thursday, 6 July 2017 18:00 (15 minutes) NA61/SHINE is a fixed target experiment at the CERN Super-Proton-Synchrotron. The maingoals of the experiment are to discover the critical point of strongly interacting matter and study the properties of the onset of deconfinement. In order to reach these goals, a study of hadron produc- tion properties is performed in nucleus-nucleus, proton-proton and proton-nucleus interactions as a function of collision energy and size of the colliding nuclei. In this talk, recent results of particle production in p+p interactions, as well as Be+Be and Ar+Sc collisions in the SPS energy range are reviewed. Transverse momentum, transverse mass and ra- pidity spectra obtained with various analysis methods are presented. An implication of collective flow in central collisions of larger systems is discussed as well as surprises in studies onsignatures of onset of deconfinement. The results are compared with available world data. Experimental Collaboration NA61/SHINE Primary author: KUICH, Magdalena (University of Warsaw (PL)) Presenter: KUICH, Magdalena (University of Warsaw (PL)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 715 EPS-HEP 2017 / Report of Contributions Diamond Detector Technology: St … Contribution ID: 898 Type: Parallel Talk Diamond Detector Technology: Status and Perspectives Friday, 7 July 2017 11:50 (20 minutes) At present most experiments at the CERN Large Hadron Collider (LHC) are planning upgrades in the next 5-10 years for their innermost tracking layers as well as luminosity monitors to be able to take data as the luminosity increases and CERN moves toward the High Luminosity-LHC (HL-LHC). These upgrades will most likely require more radiation tolerant technologies than exist today. As a result this is one area of intense research. Chemical Vapor Deposition (CVD) diamond has been used extensively and successfully in beam conditions/beam loss monitors as the innermost detectors in the highest radiation areas of essentially all LHC experiments. The startup of the LHC in 2015 brought anew milestone where the first diamond pixel modules were installed in anLHC experiment (ATLAS) and successfully began taking data. As a result, this material is now being discussed as a possible sensor material for tracking very close to the interaction region and for pixelated beam conditions/beam loss monitors of the LHC/HL-LHC upgrades where the most extreme radiation conditions will exist. The RD42 collaboration at CERN is leading the effort to use CVD diamond as a material for tracking detectors operating in extreme radiation environments. During the last three years the RD42 group has succeeded in producing and measuring a number of devices to address specfic issues related to use at the HL-LHC. We will present status of the RD42 project with emphasis on recent beam test results. In particular we present the latest results on material development, the most recent results on the independence of signal size on incident particle rate in poly-crystalline CVD diamond pad and pixel detectors over a range of particle fluxes up to 20 MHz/cm^2 measured, and results from first 3D diamond detectors which produce an extremely radiation tolerant device and collect nearly all of the charge deposited in the material. In addition we will present the plans for future use of the most recent devices Experimental Collaboration RD42 Collaboration Primary authors: REICHMANN, Michael Philipp (Eidgenoessische Technische Hochschule Zuerich (CH)); TRISCHUK, William (University of Toronto (CA)) Co-author: KAGAN, Harris (Ohio State University (US)) Presenter: REICHMANN, Michael Philipp (Eidgenoessische Technische Hochschule Zuerich (CH)) October 6, 2021 Page 716 EPS-HEP 2017 / Report of Contributions Diamond Detector Technology: St … Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 717 EPS-HEP 2017 / Report of Contributions The Short Baseline Neutrino Detec … Contribution ID: 900 Type: Parallel Talk The Short Baseline Neutrino Detector at Fermilab Friday, 7 July 2017 12:00 (15 minutes) SBND (Short-Baseline Near Detector) is a 112 ton liquid argon TPC neutrino detector under construction on the Fermilab Booster Neutrino Beam. Together with MicroBooNE and ICARUS-T600, SBND will search for shortbaseline neutrino oscil- lations in the 1 eV 2 mass range. SBND will also perform detailed studies of the physics of neutrino-argon interactions, thanks to a data sample of millions of electron and muon neutrino interactions. Finally SBND plays an important role in the on-going R&D effort to develop the LArTPC technology, testing several technologies that can be used in a future kiloton-scale neutrino detectors for a long-baseline experiment. We will discuss the detector design, its current status, and the physics program. Experimental Collaboration SBND Primary author: Dr GAMEZ , Diego Garcia (Manchester University) Presenter: Dr GAMEZ , Diego Garcia (Manchester University) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 718 EPS-HEP 2017 / Report of Contributions Search for Higgs-like particle prod … Contribution ID: 901 Type: Parallel Talk Search for Higgs-like particle produced in association with b quarks and measurement of Z → b¯b cross section at CDF II Thursday, 6 July 2017 17:15 (15 minutes) We present a search for a Higgs-like particle ϕ decaying into b¯b produced in association with b − quarks in pp¯collisions. The event sample corresponds to 5.4fb 1 of integrated luminosity collected with the CDF II detector at the Tevatron collider using a single b tagged jet trigger. We search for an enhancement in the mass of the two leading jets in event with at least three jets identified as coming from b quarks. A data-driven procedure is applied to estimate the dijet mass spectrum of the non-resonant multijet background, which has been used to measure the production cross- section of the Z decaying into b¯b in the same sample but with at least two b-jets. We set one of the most stringent upper limits on σ(pp¯ → ϕb) × B(ϕ → b¯b) in the 100 − 300 GeV/c2 mass range. Experimental Collaboration CDF Primary author: COLLABORATION, CDF (Fermilab) Presenter: MICHIELIN, Emanuele (Universita e INFN, Padova (IT)) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 719 EPS-HEP 2017 / Report of Contributions Matching and options in Neutrino … Contribution ID: 902 Type: Parallel Talk Matching and options in Neutrino EFT Saturday, 8 July 2017 12:00 (15 minutes) We discuss the matching of the minimal seesaw scenario up to dimension seven onto the SMEFT at tree level, and at one loop to dimension four following the papers arXiv:1703.10924 and arXiv:1703.04415. The dramatic possibility that the minimal seesaw scenario can form a UV boundary condition that give the Higgs potential and electroweak scale at lower energies with PeV Majorana masses is discussed. Experimental Collaboration Primary authors: TROTT, Michael Robert (University of Copenhagen (DK)); BRIVIO, Ilaria (Uni- versity of Copenhagen) Presenter: BRIVIO, Ilaria (University of Copenhagen) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 720 EPS-HEP 2017 / Report of Contributions Physics and Commissioning of the … Contribution ID: 904 Type: Parallel Talk Physics and Commissioning of the SNO+ experiment Friday, 7 July 2017 16:45 (15 minutes) The SNO+ experiment has multiple physics goals among which the search for neutrinoless double- beta decay, the study of solar neutrinos, measurements of anti-neutrinos from nuclear reactors and the Earth’s natural radioactivity, as well as the detection of Supernovae neutrinos. Located in the SNOLAB underground physics laboratory (Canada) it re-uses the SNO detector equipped with ~9300 PMTs and looking at a 12 m diameter spherical volume. The detector will be filled with 780 tons of liquid scintillator to which 130Te at 0.5% loading will be added. The commissioning of the detector at SNOLAB has started with water fill data at the end of 2016. A short phase withthe detector completely filled with water is on-going, before filling the detector with scintillator later this year. The neutrinoless double-beta decay sensitivity physics goals that SNO+ aims toachieve in phases with different loadings, as well as the physics plans for the water phase will be presented. A full review of the experiment present status and on-going commissioning in the water phase will also be given. Experimental Collaboration SNO+ Primary author: DUNGER , Jack (University of Oxford) Presenter: DUNGER , Jack (University of Oxford) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 721 EPS-HEP 2017 / Report of Contributions Data-Quality and Run Selection fo… Contribution ID: 906 Type: Poster Presentation Data-Quality and Run Selection for the SNO+ experiment The SNO+ detector main physics goal is the search for neutrinoless double-beta decay, ararepro- cess which if detected, will prove the Majorana nature of the neutrinos and provide information on the absolute scale of the neutrino absolute mass. Additional physics goals of SNO+ include the study of solar neutrinos, anti-neutrinos from nuclear reactors and the Earth’s natural radioac- tivity as well as Supernovae neutrinos. Located in the SNOLAB underground physics laboratory (Canada), it will re-use the SNO experiment ~9300 PMTs looking at a 12 m diameter spherical vol- ume filled with 780 tons of Te-loaded liquid scintillator. A short phase with the detector completely filled with water has started at the end of 2016. It will be followed by a scintillator phase expected to start at the end of this year. A careful monitoring of the detector state such as its hardware con- figuration, slow control information, data handling and triggers has to be performed atanytime to ensure the quality of the data taken. Several automatic checks have been put in place for that purpose. This information serves as input to higher level run selection tools that will ultimately perform a final decision on the goodness of a run for a given physics analysis. In this poster,we will describe in details the tools that the collaboration has developed to ensure the quality of the data taken and select golden runs for physics analysis. Experimental Collaboration SNO+ Primary authors: PRIOR, Gersende (LIP); COULTER, Ian; DESCAMPS, Freija; DI LODOVICO, Francesca (University of London (GB)); FALK, Elisabeth (University of Sussex (UK)); MARZEC, Eric; MAST- BAUM, Andy; NAE, Stefan; RUMLESKIE, Janet (Laurentian University); SINGH, Kalpana (University of Alberta); STRINGER, Mark; Mr MLEJNEK, Miroslav (University of Sussex (GB)) Presenter: FALK, Elisabeth (University of Sussex (UK)) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 722 EPS-HEP 2017 / Report of Contributions Detector energy calibration in the … Contribution ID: 908 Type: Poster Presentation Detector energy calibration in the STEREO neutrino experiment The STEREO experiment was developed to confirm the hypothesis of a light sterile neutrino aris- ing from the observed discrepancy between measured reactor antineutrino fluxes and revised flux predictions, known as the Reactor Antineutrino Anomaly. The detector is located at 10 m from the compact nuclear reactor core of the Institut Laue-Langevin, composed of >90% enriched 235U fuel. Antineutrino interactions are detected by the inverse β-decay reaction in Gd-loaded liquid scintillator. The segmentation of the detector target in 6 cells allows measuring the neutrino en- ergy spectrum at different baselines. The target cells are surrounded by a segmented volume called Gamma Catcher filled with unloaded liquid scintillator. The Gamma Catcher helps recovering the energy that may escape from the target cells and detecting external background. STEREO started taking data in November 2016. About 70 days of data have been recorded during reactor operation and about 25 during reactor shut down. STEREO plans to record 95 days more in 2017 and about 150 days in 2018. To perform a correct energy reconstruction of neutrino events, the detector energy response must be determined accurately, taking into account the spatial in-homogeneities of the detector vol- umes. The STEREO energy calibration uses several radioactive sources that can be placed inside or outside the detector. In one case, sources are introduced in tubes immersed in some of the target cells. In the other, an automated system positions sources on the external perimeter of the Gamma catcher volume. Different radioactive gamma-ray sources, from 0.5 to ~4.4 MeV, are used to constrain thenon- linearity of the scintillator response. Calibration data analysis provides the relation between the charge detected by the photo multipliers and the true deposited gamma energy obtained by simu- lations. The main goal is to reconstruct the energy scale within a 2% uncertainty. Experimental Collaboration STEREO Primary author: SERGEYEVA, Viktoriya (Laboratoire Annecy le Vieux de Physique des Partic- ules) Presenter: SERGEYEVA, Viktoriya (Laboratoire Annecy le Vieux de Physique des Particules) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 723 EPS-HEP 2017 / Report of Contributions Hemisphere Mixing: A Fully Data- … Contribution ID: 909 Type: Parallel Talk Hemisphere Mixing: A Fully Data-Driven Model Of QCD Multijet Backgrounds For LHC Searches Friday, 7 July 2017 12:48 (12 minutes) Multijet processes have always been hard to model precisely in hadron collisions, and reliance of experimental studies and searches on Monte Carlo simulations has been problematic, at times resulting in controversies and retractions. Nowadays matrix-element-based tools can accurately predict the general features of energetic collisions producing several hadronic jets, yet often the huge involved cross sections make these events impractical to handle with simulations, hence an- alysts prefer to resort to signal-depleted control samples for their searches of new phenomena at the high-energy frontier. A method never used before in hadron collisions is proposed here as a tool to model multijet pro- cesses. The method, dubbed “hemisphere mixing”, is based on exploiting the schematization of high-pT QCD processes as 2->2 reactions made complex by subleading effets. The construction of libraries of “half events” with experimental data, and a kNN-based association map, allow the generation of artificial datasets that are shown to reproduce with surprising accuracy the kinemat- ics of the background component in the original data, while washing out the effect of any small signal. The method will be described and tested with statistical procedures considering themulti- dimensional space of event features, and results based on LHC data will be shown to illustrate the excellent properties of the model. Experimental Collaboration Primary author: Dr DORIGO, Tommaso (INFN) Presenters: Dr DORIGO, Tommaso (INFN); DORIGO, Tommaso (Universita e INFN, Padova (IT)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 724 EPS-HEP 2017 / Report of Contributions New results on rare B decays with … Contribution ID: 911 Type: Parallel Talk New results on rare B decays with leptons from Belle Thursday, 6 July 2017 15:45 (30 minutes) Rare B decays with leptons in the final state are powerful probes to search for physics beyond the Standard Model (SM) as they can be calculated in the SM with high precision. We report recent results on rare B decays with leptons from the Belle experiment at the KEKB e+e− collider. The B → D∗τ +ν mode is sensitive to New Physics effects such as a charged Higgs or leptoquark current, while the world average of the branching ratio shows a discrepancy from the SM. Recently, Belle has performed a measurement of this mode using τ + decays to hadronic final states, which is essentially independent of previous measurements from Belle. With this method, the τ lepton polarization in B → D∗τ +ν has been measured for the first time. In addition, we study the D∗ polarization in B → D∗τ +ν by analyzing the D∗ helicity angle distributions. Exploiting the + − + unique features of e e B-factories, Belle can also study inclusive B → Xcτ ν decays. Recent results on purely leptonic decay, B → µ+ν will also be discussed. The analyses are based on the full data set of Belle containing 772 million BB¯ pairs. Experimental Collaboration Belle Presenter: FALKE, Saskia (Centre National de la Recherche Scientifique (FR)) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 725 EPS-HEP 2017 / Report of Contributions Recent measurements of radiative … Contribution ID: 913 Type: Parallel Talk Recent measurements of radiative and electroweak Penguin Decays at Belle Thursday, 6 July 2017 10:00 (30 minutes) Radiative and electroweak penguin B decays proceed through one loop diagrams at the lowest order. Since new particles beyond the Standard Model can enter in the loop, these processes are very sensitive to new physics. We will report on the recent results on inclusive and exclusive ∗ + − modes of radiative and electroweak penguin B meson decays, including B → Xsγ, K l l and hνν¯, based on the full data set of Belle containing 772 million BB¯ pairs. Experimental Collaboration Belle Presenter: WEHLE, Simon (DESY) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 726 EPS-HEP 2017 / Report of Contributions Recent measurements of branchin … Contribution ID: 914 Type: Parallel Talk Recent measurements of branching fractions and CP asymmetries of charmless hadronic B meson decays at Belle Friday, 7 July 2017 18:15 (15 minutes) Hadronic B decays without a charm quark constitute a powerful probe to search for physics beyond the standard model as well as provide constraints of CP -violation parameters. We report the final measurements from Belle of the branching fraction and CP asymmetry for the decays B0 → π0π0, B± → K+K−π± and preliminary results for ± → 0 0 ± ± → + − ± B KSKSh (h = K, π) and B π π π . All investigations employ the full data sample delivered by the KEKB e+e− collider. The B0 → π0π0 measurements enable improved constraints ± + − ± on the angle ϕ2 of the CKM unitarity triangle. For B → K K π we measure CP asymmetry as a function of the invariant-mass of the K+K− system, where we find strong evidence for large direct CP -violation as well as a large increase in yield at low mass. This measurement challenges conventional theoretical approaches since the result requires a large enhancement in both tree and loop diagrams in the same small region of phase-space. The three-body decay final + − ± 0 0 ± states π π π and KSKSh (h = K, π) proceed mostly via flavor-changing neutral currents and are thus sensitive to new physics via enhanced CP -asymmetry due to interference from non-SM amplitudes in loops. The final measurement plays an important role in understanding the B decay dynamics and improving the deviation boundary of sin 2ϕ1 obtained in b → ccs¯ and b → sqq¯ decays. Experimental Collaboration Belle Primary author: KWON, Youngjoon (Yonsei University) Presenter: KALIYAR, Abdul Basith (IIT Madras) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 727 EPS-HEP 2017 / Report of Contributions Search for dark sector particles at … Contribution ID: 915 Type: Parallel Talk Search for dark sector particles at Belle Thursday, 6 July 2017 15:45 (15 minutes) The dark photon, A, the dark Higgs boson, h, and the dark baryon, B′, are hypothetical con- stituents featured in a number of recently proposed Dark Sector Models. Dark Sector particles can be produced in the dark Higgs-strahlung and radiative processes, and in neutral D-meson decays channels. We will present results for the search of dark sector particles with prompt and − displaced vertex decay topologies, when applicable, obtained using 1ab 1 of data collected by the Belle detector. We also report the results of a search for dark matter in radiative Υ(1S) decays. Experimental Collaboration Belle Presenter: KWON, Youngjoon (Yonsei University) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 728 EPS-HEP 2017 / Report of Contributions Search for CP violation and rare d … Contribution ID: 916 Type: Parallel Talk Search for CP violation and rare decays in charm sector at Belle Friday, 7 July 2017 18:30 (15 minutes) − Using more than 920fb 1 data collected with the Belle detector at the KEKB asymmetric-energy + − 0 → 0 0 + − e e collider, we report the first measurement of the T-odd moments in the decay D KSπ π π and the first observation of the radiative charm decay D0 → ρ0γ. We search for CP-violation in 0 → 0 0 + → + 0 0 → 0 → ∗ decays D KSKS, D π π , D ωγ and D K γ. All the results are consistent with no CP violation. We also report the result from the first search for D0 decays to invisible final states. No significant signal yield is observed and an upper limit is set on the branching fraction at 90\% confidence level. Experimental Collaboration Belle Presenter: NAYAK, Minakshi (Indian Institute of Technology Madras) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 729 EPS-HEP 2017 / Report of Contributions Recent QCD results from the Belle … Contribution ID: 917 Type: Parallel Talk Recent QCD results from the Belle experiment Saturday, 8 July 2017 10:00 (15 minutes) Experimental Collaboration Belle Presenter: BRACKO, Marko (Jozef Stefan Institute) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 730 EPS-HEP 2017 / Report of Contributions Study of the Lorentz structure of τ … Contribution ID: 919 Type: Parallel Talk Study of the Lorentz structure of τ decays from Belle Saturday, 8 July 2017 10:15 (15 minutes) We evaluate the Michel parameters of τ decays using the full data sample of Belle. This is important to reveal the Lorentz structure of τ leptonic decays, which includes not only the V − A interaction but also contributions from scalar, tensor and others that may arise from New Physics, thus testing lepton universality as well. We use both τ + → l+νν¯ and τ + → l+γνν¯. We also measure branching fractions of τ decays into three charged leptons and two neutrinos. From this, we can constrain Michelle-like parameters. Experimental Collaboration Belle Primary authors: HAYASAKA, Kiyoshi; KWON, Youngjoon (Yonsei University) Presenter: HAYASAKA, Kiyoshi Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 731 EPS-HEP 2017 / Report of Contributions Generalizing Minimal Dark Matter … Contribution ID: 922 Type: Parallel Talk Generalizing Minimal Dark Matter: Millicharge or Decay Thursday, 6 July 2017 10:45 (15 minutes) The Minimal Dark Matter (DM) framework classifies viable DM candidates that are obtainedby simply augmenting the Standard Model of particle interactions with a new multiplet, without adding new ad hoc symmetries to make the DM stable. The model has no free parameters andis therefore extremely predictive; moreover, recent studies singled out a Majorana SU(2) quintuplet as the only viable candidate. The model can be constrained by both direct and indirect DM searches, with present time gamma-ray line searches in the galactic center being particularly sensitive. It is therefore timely to critically review this paradigm and point out possible generalizations. We propose and explore two distinct directions. One is to abandon the assumption of DM electric neutrality in favor of absolutely stable, millicharged DM candidates. We explicitly study a few examples, and find that a Dirac SU(2) triplet is the candidate least constrained by indirect searches. Another possibility is to lower the cutoff of the model, which was originally fixed at thePlanck scale, to allow for decays of the DM quintuplet. We analyze the decay spectrum of this candidate in detail and show that gamma-ray data constrain the cutoff to lie above the GUT scale. Experimental Collaboration Primary authors: DEL NOBILE, Eugenio; NARDECCHIA, Marco (CERN); PANCI, Paolo (Institute d’Astrophysique de Paris (IAP)) Presenter: DEL NOBILE, Eugenio Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 732 EPS-HEP 2017 / Report of Contributions Neutrino-nucleus scattering at nu … Contribution ID: 925 Type: Parallel Talk Neutrino-nucleus scattering at nuSTORM Thursday, 6 July 2017 15:45 (15 minutes) The nuSTORM facility will provide \nu_e and \nu_\mu beams fromthe decay of low energy muons confined within a storage ring. The instrumentation of the ring, combined with the excellent knowledge of muon decay, will make it possible to determine the neutrino flux at the %-level or better. The neutrino and anti-neutrino event rates are such that the nuSTORM facility serving a suite of near detectors will be able to measure \nu_eN and \nu_\muN cross sections with the %-level precision required to allow the next generation of long-baseline neutrino-oscillation experiments to fulfil their potential. By delivering precise cross section measurements with a pure weak probe nuSTORM may have the potential to make measurements important to understanding the physics of nucleii. The precise knowledge of the initial neutrino flux also makes it possible to deliver uniquely sensitive sterile-neutrino searches. The concept for the nuSTORM facility will be presented together with an evaluation of its performance. The status of the planned consideration of nuSTORM at CERN in the context of the Physics Beyond Colliders workshop will be summarised. Experimental Collaboration nuSTORM Primary author: LONG, Kenneth Richard (Imperial College (GB)) Presenter: LONG, Kenneth Richard (Imperial College (GB)) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 733 EPS-HEP 2017 / Report of Contributions Direct detection signals of dark m … Contribution ID: 926 Type: Poster Presentation Direct detection signals of dark matter with magnetic dipole moment The analysis of direct dark matter (DM) detection data often relies on standard assumptions about the DM interactions with nucleons, namely the so-called spin-independent and spin-dependent interactions. However, other interactions are possible, each giving rise to a different signal. The rate spectrum experiments try to measure can thus be used to gain information about the DM properties. The same is also true for the time dependence of the rate, most notably itsannual modulation due to Earth’s rotation around the Sun. It is therefore important to have a clear view of what would be the signal produced not only by standard DM candidates, but also by less-standard yet motivated candidates. A neutral DM particle with a magnetic dipole moment is interesting in this respect, since it has a very different direct detection phenomenology with respect to standard candidates, owingto the peculiar functional form of its differential scattering cross section with nuclei. It could arise as a bound state of charged particles, like the neutron or an atom, or be a fundamental particle which interacts with charged particles, much like a Dirac neutrino. I will analyze in detail the signals expected from this candidate, both the recoil rate and its modulation, and show that they are very different from those expected in the standard scenario. I will also show that, contraryto the common lore, the phase of the modulation depends on the recoil energy as well as on the target material for this candidate. The observation of different modulations by experiments employing different targets would be a strong indication in favour of this type of DMparticle. Experimental Collaboration Primary authors: DEL NOBILE, Eugenio; GELMINI, Graciela Beatriz (University of California Los Angeles (US)) Presenter: DEL NOBILE, Eugenio Session Classification: Poster session Track Classification: Dark Matter October 6, 2021 Page 734 EPS-HEP 2017 / Report of Contributions Suppression of heavy quarkonia in … Contribution ID: 927 Type: Parallel Talk Suppression of heavy quarkonia in pA and AA collisions Thursday, 6 July 2017 09:15 (15 minutes) In this talk we present our results on production of heavy quarkonia in pA and AA collisions in the color dipole approach. We analyze dynamics of quarkonium inside nuclear matter, and assess nuclear suppression due to shadowing and absorption, as well as consider novel multinucleon pro- duction mechanism. The contribution of this new mechanism explains why the measured nuclear effects remain essentially unchanged within the energy range from RHIC totheLHC. We demonstrate that the suggested approach can simultaneously explain a relatively small nuclear suppression of J/ψ and Υ production, as well as a strong suppression of ψ(2S) observed at RHIC and LHC in proton-ion collisions. Experimental Collaboration Primary authors: SIDDIKOV, Marat (Universidad Santa Maria); KOPELIOVICH, Boris (UTFSM); SCHMIDT, Ivan Presenter: SIDDIKOV, Marat (Universidad Santa Maria) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 735 EPS-HEP 2017 / Report of Contributions Supernova remnants in the very– … Contribution ID: 929 Type: Parallel Talk Supernova remnants in the very–high–energy sky: prospects for CTA Thursday, 6 July 2017 15:42 (18 minutes) The Cherenkov Telescope Array is expected to lead to the detection of many new supernova rem- nants in the TeV and multiTeV range. In addition to the individual study of each, the study of these objects as a population can help constraining the parameters describing the acceleration of parti- cles and increase our understanding of the mechanisms involved. Using Monte Carlo methods, the population of Galactic SNRs emitting TeV gamma rays can be simulated. The simulated population can be confronted with future observations to provide a novel test for the SNR hypothesis. Experimental Collaboration CTA Primary author: CRISTOFARI, Pierre (Columbia University) Presenter: CRISTOFARI, Pierre (Columbia University) Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 736 EPS-HEP 2017 / Report of Contributions Constraining dark U(1) models wit … Contribution ID: 930 Type: Poster Presentation Constraining dark U(1) models with Supernova 1987 data Recent 8Be∗ decay anomaly suggests the existence of a light dark boson which has a suppressed coupling to proton compared to its coupling to neutron. The simple dark U(1) model constructed by introducing a kinetic mixing between standard model U(1)Y gauge boson and the dark boson needs to be generalized to satisfy the above requirement. The couplings of dark boson to standard model fermions in such generalized dark U(1) models can be constrained by Supernova 1987 data. We shall present these constraints with the recently proposed plasma effect in supernova taken into account. Experimental Collaboration Primary author: LAI, Wei-Hao (National Chiao-Tung University) Co-authors: LIN, Guey-Lin (National Chiao-Tung University); Dr TSAI, Yue-Ling Sming (Physics Division, National Center for Theoretical Science) Presenter: LAI, Wei-Hao (National Chiao-Tung University) Session Classification: Poster session Track Classification: Astroparticle Physics October 6, 2021 Page 737 EPS-HEP 2017 / Report of Contributions Searching for a Sterile Neutrino at … Contribution ID: 931 Type: Parallel Talk Searching for a Sterile Neutrino at J-PARC MLF: JSNS^2 experiment Friday, 7 July 2017 10:45 (15 minutes) The JSNS2 experiment aims to search for the existence of neutrino oscillations with Delta m2 near 1eV2 at the J-PARC Materials and Life Science Experimental Facility (MLF). With the 1 MW of 3 GeV proton beam created by Rapid Cycling Synchrotron (RCS) and spallation neutron target, an intense neutrino beam from muon decay at rest is available. Neutrinos come predominantly from mu+ decay : mu+ –> e+ + numubar + nue. The oscillation to be searched for is numubar to nuebar which is detected by the inverse beta decay interaction nuebar + p –> e+ + n, followed by gammas from neutron capture of Gd. The two detectors with a fiducial volume of 50 tons are located 24 meters away from the mercury target. Additional physics programs include the cross section measurements with neutrinos with a few 10 MeV from muon decay at rest and with monochromatic 236MeV from kaon decay at rest.. Experimental Collaboration JSNS^2 (J-PARC E56) experiment Primary author: Dr PARK , Jungsic (KEK) Presenter: Dr PARK , Jungsic (KEK) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 738 EPS-HEP 2017 / Report of Contributions Revealing BSM Composite Dynam … Contribution ID: 932 Type: Parallel Talk Revealing BSM Composite Dynamics Through Topological Interactions at Future Colliders Friday, 7 July 2017 11:30 (15 minutes) In composite Higgs models, new composite pseudo-scalars (as an η or an η′-like state) can interact with the Higgs and with gauge bosons via anomalous interactions, which stem from the topological structure of the theory. A future 100 TeV pp collider (FCC) will be able to test these anomalous interactions and thus to shed light on the strong dynamics which generates the Higgs and other composite resonances. I will discuss the topological interactions of a minimal composite Higgs model with fermionic ultraviolet completion, based on the coset SU(4)/Sp(4). I will indicate the strategy to test these interactions at the FCC and the expected reach. Experimental Collaboration Primary authors: THOMSEN, Anders Eller (CP3-Origins); Dr MOLINARO, Emiliano (CP3-Origins, University of Southern Denmark); SANNINO, Francesco (Unknown); VIGNAROLI, Natascia (CP3-Origins) Presenter: VIGNAROLI, Natascia (CP3-Origins) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 739 EPS-HEP 2017 / Report of Contributions High-energy cosmic gamma rays Contribution ID: 935 Type: Plenary Talk High-energy cosmic gamma rays Tuesday, 11 July 2017 12:30 (30 minutes) Experimental Collaboration Presenters: HOFMANN, Werner (Max-Planck-Gesellschaft (DE)); HOFMANN, Werner (Max Planck Institut für Kernphysik) Session Classification: Plenary session October 6, 2021 Page 740 EPS-HEP 2017 / Report of Contributions The ν-cleus experiment: Gram- … Contribution ID: 939 Type: Poster Presentation The ν-cleus experiment: Gram-scale cryogenic calorimeters for a rapid discovery of coherent neutrino scattering We investigate new gram-scale cryogenic detectors, 1-2 orders of magnitude smaller in size than previous devices. These are expected to reach unprecedentedly low energy thresholds, inthe10 eV-regime and below. This technology allows new approaches in rare-event searches, including the search for MeV-scale dark matter, detection of solar neutrinos and a rapid discovery of coher- ent neutrino-nucleus scattering (CNNS) at a nuclear reactor. We show a simple scaling law forthe energy threshold of cryogenic calorimeters, allowing to extrapolate the performance of existing devices to smaller sizes. Results from a measurement with a 0.5 g sapphire detector are presented. This prototype reached a threshold of 20 eV, one order of magnitude lower than previous results with massive calorimeters. We discuss an experiment, called ν-cleus, which enables a 5-σ discov- ery of CNNS within about 2 weeks of measuring time at 40 m distance from a power reactor. In a second stage, this experiment enables precision measurements of the CNNS cross-section and spectral shape for new physics beyond the Standard Model. Experimental Collaboration Primary authors: STRAUSS, Raimund; SCHIECK, Jochen (Austrian Academy of Sciences (AT)) Presenters: STRAUSS, Raimund; SCHIECK, Jochen (Austrian Academy of Sciences (AT)) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 741 EPS-HEP 2017 / Report of Contributions Low energy observables and exclu … Contribution ID: 941 Type: Parallel Talk Low energy observables and exclusive production with the ATLAS Detector Thursday, 6 July 2017 09:45 (15 minutes) Low energy phenomena have been studied in detail at the LHC, providing important input for im- proving models of non-perturbative QCD effects. The ATLAS collaboration has performed several new measurements in this sector: We present charged-particle distributions sensitive to the underlying event, measured by the AT- LAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV. The results are corrected for detector effects and compared to predictions from various Monte Carlo generators. In addition, we present studies on the correlated hadron production, as they are an important source for information on the early stages of hadron formation. In particular, an analysis of the momentum difference between charged hadrons in high–energy proton–proton collisions isper- formed in order to study coherent particle production. The results are compared to the predictions of a helical QCD string fragmenting model. In the absence of forward proton tagging, exclusive processes can be distinguished in the central part of the ATLAS detector exploiting the absence of charged particles reconstructed in the inner tracking detector. We present a first measurement of the exclusive two-photon production ofmuon pairs in proton-proton collisions at a center-of-mass energy of 13 TeV. The results show significant deviations from the pure QED prediction, which can be explained by proton-proton rescattering effects. Experimental Collaboration ATLAS Presenter: MARTIN, Tim (University of Warwick (GB)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 742 EPS-HEP 2017 / Report of Contributions « La Nuit des ondes gravitationnel … Contribution ID: 942 Type: Parallel Talk « La Nuit des ondes gravitationnelles » : a multi-site outreach event about gravitational waves Saturday, 8 July 2017 09:45 (15 minutes) On Monday March 20th 2017, an outreach event dedicated to the gravitational waves and their recent discovery by the LIGO-Virgo collaboration took place. Jointly organized by the “Centre National de la Recherche Scientifique” (CNRS) and the “Société Française de Physique » (SFP), it was targeting the general audience with an emphasis on high-school students and teachers. The key feature of this project was to be multi-site, meaning that the event would takeplace simultaneously in a dozen French cities, plus the French Institute in Firenze (Italy), close to the site of the Virgo experiment. The project was also meant to be interactive, with all sites connected through a videoconference for a Q&A session with scientists, a quiz and finally a conference about astrophysics in the cinema. The event was also broadcasted live on the web, via a webcast system and the social medias. In addition, four contests (science and arts) open to anyone (schools and the general audience) were organized. Experimental Collaboration Primary authors: WORMSER, Guy (LAL Orsay); Mrs LAUVERGEON, Marie (CNRS); ARNAUD, Nicolas (LAL (CNRS-IN2P3)) Presenter: ARNAUD, Nicolas (LAL (CNRS-IN2P3)) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 743 EPS-HEP 2017 / Report of Contributions First Results from the XENON1T D … Contribution ID: 943 Type: Parallel Talk First Results from the XENON1T Dark Matter Experiment Thursday, 6 July 2017 09:30 (15 minutes) XENON1T is a dual-phase time-projection chamber, designed to detect dark matter particle inter- actions within a 2-ton liquid-xenon target with unprecedented sensitivity. The detector, located at the Laboratori Nazionale del Gran Sasso, has been fully operational since May 2016, including reg- ular calibrations, background studies, and a continuously improving xenon purity. The ongoing acquisition of science data began in November 2016. A summary of the status, detector perfor- mance, and new results from the first science run of the XENON1T experiment will be presented. Experimental Collaboration XENON Primary author: Dr GALLOWAY, Michelle (Universität Zürich) Presenter: Dr GALLOWAY, Michelle (Universität Zürich) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 744 EPS-HEP 2017 / Report of Contributions A cold neutron beam facility for p … Contribution ID: 944 Type: Poster Presentation A cold neutron beam facility for particle physics at the ESS Pulsed beams have tremendous advantages for precision experiments with cold neutrons. In order to minimize and measure systematic effects, they are used at continuous sources in spite ofthe related substantial decrease in intensity. At the pulsed neutron source ESS, such experiments will gain up to a factor of 30 in event rate, and novel concepts become feasible. Therefore, the cold neutron beam facility for particle physics ANNI was proposed as part of the ESS instrument suite. Scientific case, design considerations, concept and expected performances of ANNI will bepre- sented. Experimental Collaboration ANNI Primary author: Dr KONRAD, Gertrud (SMI & TU Wien) Co-authors: Prof. ABELE, Hartmut (TU Wien); Prof. MÄRKISCH, Bastian (TU München); Prof. PIEGSA, Florian (University of Bern); Prof. SCHMIDT, Ulrich (Universität Heidelberg); Dr SOLDNER, Torsten (Institut Laue-Langevin); Dr THEROINE, Camille (TU München & ESS) Presenter: Dr KONRAD, Gertrud (SMI & TU Wien) Session Classification: Poster session Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 745 EPS-HEP 2017 / Report of Contributions Search for new physics via baryon … Contribution ID: 945 Type: Poster Presentation Search for new physics via baryon EDM at LHC Permanent electric dipole moments (EDMs) of fundamental particles provide powerful probes for physics beyond the Standard Model. We propose to search for the EDM of strange and charm baryons at LHC, extending the ongoing experimental program on the neutron, muon, atoms, molecules and light nuclei. The EDM of strange Λ baryons, selected from weak decays of charm baryons produced in pp collisions at LHC, can be determined by studying the spin precession in the magnetic field of the detector tracking system. A testof CPT symmetry can be performed by + + measuring the magnetic dipole moment of Λ and Λ baryons. For short-lived Λc and Ξc baryons, to be produced in a fixed-target experiment using the 7 TeV LHC beam and channeled in abent crystal, the spin precession is induced by the intense electromagnetic field between crystal atomic planes. A possible realisation of this programme would be at the LHCb experiment. In this sce- nario the experimental layout based on the LHCb detector and the expected sensitivities in the coming years are discussed, along with perspectives for the future. Experimental Collaboration Primary authors: MARTINEZ VIDAL, Fernando (IFIC - University of Valencia and CSIC (ES)); MERLI, Andrea (Università degli Studi e INFN Milano (IT)); MARANGOTTO, Daniele (Università degli Studi e INFN Milano (IT)); RUIZ VIDAL, Joan (Univ. of Valencia and CSIC (ES)); GARCIA MARTIN, Luis Miguel (Univ. of Valencia and CSIC (ES)); BOTELLA, francisco j. (University of Valencia); DE OYAN- GUREN CAMPOS, Arantza (Univ. of Valencia and CSIC (ES)); NERI, Nicola (CERN, Università degli Studi e INFN Milano (IT)) Presenter: MERLI, Andrea (Università degli Studi e INFN Milano (IT)) Session Classification: Poster session Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 746 EPS-HEP 2017 / Report of Contributions The electromagnetic response of r… Contribution ID: 946 Type: Parallel Talk The electromagnetic response of resonance matter and other strange observations Thursday, 6 July 2017 12:30 (15 minutes) The matter formed in central heavy-ion collisions at a few GeV per nucleon is commonly under- stood as resonance matter, a gas of nucleons and excited baryonic states with a substantial contri- bution from mesonic, mostly pionic excitations. Yet, in the initial phase of the reaction the system is compressed to beyond nuclear ground state density and hence substantial modifications of the hadron properties are expected to occur. The HADES experiment explores strongly interacting baryon-rich matter at moderate tempera- tures using rare and penetrating probes. It operates in the beam-energy range of 1-2A GeV where comparatively long-lived states of compressed matter are created. In this talk we present key results on in-medium properties of hadrons obtained by the High Ac- ceptance DiElectron Spectrometer. The spectral distribution of virtual photon emitted fromthe collision zone of A+A collisions indicates strong medium effects beyond those resulting from a pure superposition of frequent but individual NN collisions. This observable, as well as the mea- sured hadron abundances in the final state show features of a thermalized fireball. Baryon-driven medium effects influence significantly the rho meson in-medium spectral function andarecon- sidered essential in describing the low-mass dilepton spectra. While the measured abundance of all reconstructed particles are well described assuming thermalization, the double strange cascade Ξ(1321) production in A+A and p+A collisions shows however a sizeable enhancement above pre- dictions of statistical hadronisation and transport model calculations. A deeper understanding of the microscopic properties of resonance matter requires systematic investigations of baryonic de- cays and these are studied in HADES making use of pion beams. This experimental program will be continued in the coming years with an upgraded HADES detector. Experimental Collaboration HADES Primary author: GALATYUK, Tetyana (TU Darmstadt / GSI) Presenter: GALATYUK, Tetyana (TU Darmstadt / GSI) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 747 EPS-HEP 2017 / Report of Contributions Neutron calibration of the SoLid d … Contribution ID: 947 Type: Poster Presentation Neutron calibration of the SoLid detector SoLid is a reactor neutrino experiment, located at BR2@SCK-CEN (Mol, Belgium), searching for very-short baseline neutrino oscillation (~ 10 m). Its main objectives are to confirm the so-called Reactor Antineutrino Anomaly (RAA), and to test in-fine the existence of light sterile neutrino(s). This experiment is based on a new kind of neutrino detector specially designed against background. The fiducial volume is made of composite solid scintillators (PVTand 6Li screens), which is com- pact and highly segmented (8000 voxels/m3). As most of reactor neutrino experiments, neutrinos are detected through inverse beta decay reac- tion (IBD), which produces a positron and a neutron. To perform a sensitive oscillation analysis, one of the most important requirement is to control perfectly the detection efficiency, which is in IBD case directly driven by the neutron detection efficiency. Regarding the SoLid setup, the challenge arise from the very large number of cells (around 15 000). Then, two automated system, CALIPSO and CROSS, were designed in order to irradiated each cells with well-calibrated neutron source (AmBe et 252Cf). First, this poster will present the calibration strategy adopted by the collaboration to determine the neutron efficiency at percent level. Then, it will describe the Monte-Carlo simulation (GEANT4/MCNP) which allows us to estimate geometrical effects and systematics errors arising from neutron trans- port. To conclude, it will present first results coming from detector commissioning. Experimental Collaboration SoLid Primary author: Mr PESTEL, Valentin (LPC Caen) Presenter: Mr PESTEL, Valentin (LPC Caen) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 748 EPS-HEP 2017 / Report of Contributions The EUSO-SPB mission Contribution ID: 949 Type: Parallel Talk The EUSO-SPB mission Saturday, 8 July 2017 09:30 (15 minutes) EUSO-SPB (Extreme Universe Space Observatory - Super Pressure Balloon) is an experiment on board a super pressure balloon for a flight duration which may reach 100 days. The instrument was launched on the 25th April 2017 from Wanaka in New Zealand and it is now acquiring data. The instrument is an updated version of the EUSO-Balloon one. It includes a full original JEM- EUSO PDM (Photon Detection Module with 2304 pixels), and an optical system with two Fresnel lenses with a side of 1 meter covering a field of view of ±6 degrees. The main scientific objective is the first observation and measurements of Ultra High EnergyCos- mic Ray Air Showers by looking down from near space with a fluorescence detector. The EUSO- SPB will also search for UV pulse like signatures from other objects as meteoroids, atmosphere TLEs, SQM, LSPs and it will measure slowly varying UV light as airglow, bioluminescence events over the ocean. Experimental Collaboration JEM-EUSO Primary authors: SCOTTI, Valentina; OSTERIA, Giuseppe (INFN) Presenter: SCOTTI, Valentina Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 749 EPS-HEP 2017 / Report of Contributions The new front end and DAQ of the… Contribution ID: 950 Type: Poster Presentation The new front end and DAQ of the ICARUS detector Icarus is the largest imaging LAr TPC ever operated. During its LNGS run on the CNGS neutrino beam, from 2010 to 2013, produced some thousands neutrino events of unprecedented quality. This was possible thanks its mechanical precision and stability, liquid argon purity and electronics front-end and DAQ. In this poster the last issue (front-end and DAQ) will be presented in detail. Actually Icarus T600, in view of its operation at FNAL on the SBN neutrino beam, is undergoing a major overhauling that implies cathode mechanics improvement, additional PMTs installation and a new electronics front-end and DAQ. This electronics implements a new architecture, integrated onto the flange proprietary design, and a new front-end that improves S/N and induction signals treatment. Also this issue will be presented in detail together with data recently recorder at CERN in the Icarino, 50 litres, LAr facility. Experimental Collaboration ICARUS Primary author: MENG, Guang (Istituto Nazionale de Fisica Nucleare (INFN)) Presenter: MENG, Guang (Istituto Nazionale de Fisica Nucleare (INFN)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 750 EPS-HEP 2017 / Report of Contributions The upgrading of the ICARUS T60 … Contribution ID: 951 Type: Parallel Talk The upgrading of the ICARUS T600 detector Saturday, 8 July 2017 12:00 (15 minutes) The ICARUS T600 detector is the largest LAr-TPC operated to date. It performed a successful three- year physics run at the underground LNGS laboratories, studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions in cosmic rays. After an intense refurbishing operation, the entire apparatus will be transferred to FNAL(USA), were it will become the far detector of the Short Baseline Neutrino (SBN) program to investigate the possible presence of sterile neutrino states. The T600 detector has undertaken a significant overhauling process at CERN. This introduces new technological developments while at the same time maintaining the already achieved performance. The overhauling covers important technical sections: the realization of new vessels and the review of the cryogenic system; the improvement of the cathodes planarity; the upgrade of the light detection system; the renovation of the read-out electronics. In this contribution, the main activities of the refurbishing operation will be described in details, highlighting the major changes that will affect the ICARUS T600 physics run inthe United States. Experimental Collaboration ICARUS collaboration Primary author: RASELLI, Gian Luca (Universita e INFN, Pavia (IT)) Presenter: RASELLI, Gian Luca (Universita e INFN, Pavia (IT)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 751 EPS-HEP 2017 / Report of Contributions The ICARUS experiment Contribution ID: 952 Type: Parallel Talk The ICARUS experiment Friday, 7 July 2017 12:30 (15 minutes) The 760 ton liquid argon ICARUS T600 detector performed a successful three-year physicsrun at the underground LNGS laboratories, studying neutrino oscillations with the CNGS neutrino beam from CERN, and searching for atmospheric neutrino interactions in cosmic rays. A sensitive search for LSND like anomalous nu_e appearance was performed, contributing to constrain the allowed parameters to a narrow region around Δm2~eV2, where all the experimental results can be coherently accommodated at 90% C.L. The T600 detector will be redeployed at Fermilab, after a significant overhauling, to beexposed the Booster Neutrino Beam acting as the far station to search for sterile neutrino within the SBN program. The proposed contribution will address ICARUS LNGS achievements and the ongoing analyses also finalized to the next physics run at Fermilab. Experimental Collaboration ICARUS collaboration Primary author: VARANINI, Filippo (Universita e INFN, Padova (IT)) Presenter: VARANINI, Filippo (Universita e INFN, Padova (IT)) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 752 EPS-HEP 2017 / Report of Contributions Search for a spin-zero high mass r … Contribution ID: 953 Type: Poster Presentation Search for a spin-zero high mass resonance with the Z(ll)Z(vv) final state in 2016 with CMS The latest results of the search for a high mass scalar boson using the 13TeV proton-proton collision data acquired by the CMS experiment in 2016 will be presented. In particular, this poster will be focused on the decay channel H->ZZ->llvv selected from data corresponding to an integrated luminosity of 35.9/fb. An analysis of the reconstructed transverse mass and missing transverse energy is performed in different event categories, and limits are set on the production cross section of a heavy scalar of variable width in the gluon-fusion and vector-boson fusion production modes. Experimental Collaboration Presenter: DELANNOY, Hugo (Universite Libre de Bruxelles (BE)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 753 EPS-HEP 2017 / Report of Contributions Latest results of the LHCf experim … Contribution ID: 954 Type: Parallel Talk Latest results of the LHCf experiment at LHC Thursday, 6 July 2017 09:00 (18 minutes) In 2016 the LHCf experiment has fulfilled its original goal of measuring the spectra of the neutral particles produced in the very forward direction at LHC at the highest energy ever available. The main purpose of these measurements is indeed to provide the Cosmic Ray and High Energy Physics communities with a missing unique set of information for the improvement of the hadronic inter- action models used to simulate air showers development produced in the interaction of primary High Energy Cosmic Rays (HECR) with the Earth atmosphere. The last data sets collected bythe LHCf experiment have been obtained during p+p collisions, at an energy of 13 TeV in the CM frame, and p+Pb collision, at an energy of the colliding nucleon pair of 5.2 TeV and 8.1 TeV in the CM frame. A review of the main results of LHCf and of the recent and on-going activities will be presented. Experimental Collaboration LHCf Collaboration Primary author: TRICOMI, Alessia (Universita e INFN, Catania (IT)) Presenter: TRICOMI, Alessia (Universita e INFN, Catania (IT)) Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 754 EPS-HEP 2017 / Report of Contributions Review of top and EW physics at … Contribution ID: 955 Type: Parallel Talk Review of top and EW physics at future colliders Saturday, 8 July 2017 11:30 (30 minutes) In the next decades the Large Hadron Collider and its luminosity upgrade are expected to yield a wealth of increasingly sensitive searches and measurements in hadro-production of top quarks and electro-weak gauge bosons. Several projects are being prepared for energy-frontier lepton (ILC, CLIC, FCCee, CEPC, mC), electron-proton (LHeC), hadron colliders (FCChh, SPPC) that are to continue this quest. In this review I collect the results of a large number of studies into the top and EW physics potential of the HL-LHC and future colliders. A model-independent comparison of the BSM potential is performed in the framework of an effective field theory. I discuss the strengths and weaknesses oflepton and hadron colliders and identify areas where different projects can provide complementary information. Experimental Collaboration Primary author: VOS, Marcel (IFIC Valencia (ES)) Presenter: VOS, Marcel (IFIC Valencia (ES)) Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 755 EPS-HEP 2017 / Report of Contributions Multilayer solutions for Near-BPS … Contribution ID: 956 Type: Poster Presentation Multilayer solutions for Near-BPS Skyrme Models The Skyrme Model is considered a natural candidate for a low-energy effective theory ofQCD, a point of view supported by results coming from 1/N_c expansion and holographic QCD. This framework leads to an attractive picture where baryons (and nuclei) emerge as topological solitons with a topological number identified to the baryon number A. Unfortunately, even the most naive Skyrme Model extensions have been plagued with the same problem: they predict large binding energies for the nuclei. The more recently proposed near-BPS class of Skyrme models provides a simple answer to this problem. The solutions nearly saturate the Bogomol’nyi bound which means that by construction they must have small binding energies. We present our most recent results regarding near-BPS Skyrmions and argue that they provide an improved description of nucleons and nuclei. More precisely, we address here the issue regarding the energy minimizer which remains unknown for A > 1 by proposing a more appropriate ansatz than the usual axially symmetric solution at least for large A. Experimental Collaboration Primary authors: MARLEAU, Luc (Université Laval); GIASSON, Nicolas (Université Laval) Presenter: MARLEAU, Luc (Université Laval) Session Classification: Poster session Track Classification: QCD and Hadronic Physics October 6, 2021 Page 756 EPS-HEP 2017 / Report of Contributions The updates of CTEQ-TEA Parton … Contribution ID: 957 Type: Parallel Talk The updates of CTEQ-TEA Parton Distribution Functions Friday, 7 July 2017 17:45 (25 minutes) We present the updates of CTEQ-TEA parton distribution functions (CT17 PDFs). Previous LHC 7 TeV and HERA 1 data, included in the CT14 PDF analysis, are superseded by HERA 1+2 and new LHC data, especially on W boson, Z boson, inclusive jet, and top quark differential distribu- tions. We also discuss the possibility of a (sizable) non-perturbative contribution to charm parton distribution function in the context of CTEQ-TEA (CT14IC) global analysis at the NNLO. Experimental Collaboration Primary author: Dr YUAN, C.-P. (Michigan State University) Presenter: Dr YUAN, C.-P. (Michigan State University) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 757 EPS-HEP 2017 / Report of Contributions The Baby MIND spectrometer for t… Contribution ID: 959 Type: Parallel Talk The Baby MIND spectrometer for the J-PARC T59(WAGASCI) experiment Saturday, 8 July 2017 12:15 (15 minutes) The Baby MIND detector under construction at CERN will measure the momentum andchargeof muons from neutrino interactions in the WAGASCI neutrino targets. The WAGASCI experiment, referred to as T59 at J-PARC, will measure the ratio of neutrino interaction cross-sections on water and plastic using a three-dimensional grid structure providing large angular acceptance. The Baby MIND consists of 33 steel magnet modules, each approximately 2 tonnes, interleaved with 18 scin- tillator modules. The novel magnetisation scheme is a significant departure from more classical approaches for magnetised iron neutrino detectors. Due to handling constraints at J-PARC, narrow shaft, each magnet module is individually magnetised. This provides far greater modularity and flexibility in the layout, with greater possibilities to surround other neutrino targets such aswater Cherenkov, liquid argon or plastic scintillators.The use of such magnetised iron plates would not usually be considered for muon momenta below 1 GeV/c due to multiple scattering in the steel. By optimising the layout, the Baby MIND can determine the charge of muons with good efficien- cies down to 400 MeV/c. Custom readout electronics was developed based on the CITIROC ASIC and has trigger and synchronisation features optimised for operation at J-PARC. This presentation will cover the design and construction of the Baby MIND detector, and measurements of charge identification efficiencies from the latest campaign of beam tests at theCERNPS. Experimental Collaboration NP05 CERN Neutrino Platform, J-PARC T59 WAGASCI Primary author: NOAH MESSOMO, Etam (Geneva University (CH)) Co-authors: KLEYMENOVA,A (INR RAS (RU)); BLONDEL, Alain (Geneva University (CH)); BROSS, Alan (Fermilab (US)); IZMAYLOV, Alexander (INR RAS); DUDAREV, Alexey (CERN); Mr KHOTYANT- SEV, Alexey (Russian Academy of Sciences (RU)); Mr KOSTIN, Andrey (INR RAS); CERVERA VIL- LANUEVA, Anselmo (Univ. of Valencia and CSIC (ES)); CADOUX, Frank Raphael (Geneva University (CH)); Dr KHABIBULLIN, Marat (Institute for Nuclear Research (RU)); Ms ANTONOVA, Maria (In- stitute for Nuclear Research of the Russian Academy of Science (RU)); BOGOMILOV, Mariyan (Sofia University (BG)); Mr CHIKUMA, Naruhiro (The University of Tokyo); BENOIT, Philippe (CERN); Dr ASFANDIYAROV, Ruslan (Geneva University (CH)); BAYES, Ryan (University of Glasgow); FEDOTOV, Sergei (Russian Academy of Sciences (RU)); HALLSJO, Sven-Patrik (University of Glasgow (GB)); Mr KOGA, Taiichiro (The University of Tokyo (JP)); EKELOF, Tord Johan Carl (Uppsala University (SE)); FAVRE, Yannick (Geneva University (CH)); KARADZHOV, Yordan Ivanov (Geneva University (CH)); KU- DENKO, Yury (Russian Academy of Sciences (RU)); LIKHACHEVA, Viktoriia (Russian Academy of Sci- ences (RU)); MARTINEZ, Bastien (Geneva University (CH)); MATEV, Rosen (Sofia University (BG)); MEDVEDEVA, Mariia (Russian Academy of Sciences (RU)); Mr MEFODIEV, Aleksandr (INR RAS); Prof. MINAMINO, Akihiro (Yokoyama National University); MINEEV, Oleg (Russian Academy of Sciences (RU)); Mr NICOLA, Laurent (Geneva University (CH)); NESSI, Marzio (CERN); OVSIANNIKOVA, Tatiana (Rus- sian Academy of Sciences (RU)); PAIS DA SILVA, Helder Filipe (CERN); PARSA, Saba (Geneva Univer- October 6, 2021 Page 758 EPS-HEP 2017 / Report of Contributions The Baby MIND spectrometer for t… sity (CH)); RAYNER, Mark Alastair (Geneva University (CH)); ROLANDO, Gabriella (CERN); SHAIKHIEV, Artur (Russian Academy of Sciences (RU)); SIMION, Patrik (Uppsala University (SE)); SOLER JERMYN, Paul (University of Glasgow (GB)); Mr SUVOROV, Serget (INR RAS); Prof. TSENOV, Roumen (Univer- sity of Sofia (BG)); TEN KATE, Herman (CERN); VANKOVA-KIRILOVA, Galina Tsvetanova (University of Sofia (BG)); YERSHOV, Nikolay (INR RAS (RU)) Presenter: NOAH MESSOMO, Etam (Geneva University (CH)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 759 EPS-HEP 2017 / Report of Contributions Quarkonium Hybrids with Nonrel … Contribution ID: 960 Type: Parallel Talk Quarkonium Hybrids with Nonrelativistic Effective Field Theories Saturday, 8 July 2017 10:45 (15 minutes) I will discuss spectroscopic properties of heavy quarkonium hybrids derived in the last year in the systematic framework of nonrelativistic effective field theories. Re- sults will be compared with data and lattice determinations. Experimental Collaboration Primary author: VAIRO, Antonio Presenter: VAIRO, Antonio Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 760 EPS-HEP 2017 / Report of Contributions Long baseline experiments: a new … Contribution ID: 961 Type: Parallel Talk Long baseline experiments: a new window on sterile neutrinos Friday, 7 July 2017 12:15 (15 minutes) One of the hottest topics in present-day neutrino physics is provided by the hints of sterile species coming from the short-baseline (SBL) anomalies. Waiting for a definitive (dis-)confirmation of these indications by future SBL experiments, other complementary avenues can be explored in the hunt of such elusive particles. An important opportunity is that offered by the long-baseline (LBL) experiments which, as I will show, are sensitive to novel interference effects mediated by the new large squared-mass splitting. This renders the LBLexper- iments the sole setups sensitive to the new sources of CP-violation involved in the 4-flavor scheme. I will point out that the experiments NOvA and T2K already provide the first indications on one of the new CP-phases. I will also describe how the future LBL experiments will be able to pin down the new CPV sector. Experimental Collaboration Primary author: PALAZZO, Antonio (University of Bari and INFN) Presenter: PALAZZO, Antonio (University of Bari and INFN) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 761 EPS-HEP 2017 / Report of Contributions The upgrade project of the T2K ne … Contribution ID: 962 Type: Parallel Talk The upgrade project of the T2K near detector Saturday, 8 July 2017 12:30 (15 minutes) The T2K neutrino oscillation experiment established the νµ → νe appearance with only 10\% of the original beam request of 7.8 × 1021 30 GeV protons on target (p.o.t.). In view of the J-PARC program of upgrades of the beam intensity, the T2K-II proposal requires to run up to 20 × 1021 p.o.t., i.e. an increase of the exposure by more than a factor 10 aimed at establishing CP violation at 3 σ level for a significant fraction of the possible δCP values. The Hyper-K proposal consists in a further increase by a factor 10 of the far detector mass. Facing the potential increase of statistics by two orders of magnitude, it is of great importance to undertake a vigorous program of near detector upgrades, with the aim of reducing the overall statistical and systematic uncertainties at the appropriate level of better than 4\%. Time Projection Chambers equipped with MPGD have been used with success for the T2K ND280 near detector and are proposed for the upgrade of the T2K near detector together with fine-grained scintillator-based targets and TOF detectors. The requirements of TPCs for neutrino detectors are quite specific. We envisage to use a very thin field cage, resistive Micromegas detectors forthe charge readout and state-of-the-art electronics. A project (CERN-SPSC-2017-002 and SPSC-EOI-015) combining the upgrade of the T2K near detec- tor and the R&D for a High Pressure TPC has been recently launched. A High Pressure TPC would be a very sensitive detector for the detailed study of neutrino-nucleus interactions, a limiting fac- tor for extracting the ultimate precision in long baseline experiments. High pressure TPCs are also being considered for future long-baseline experiments like Hyper-Kamiokande and DUNE. We will report on the goals of this project and its development program including prototypes, beam tests, and projected performances. Experimental Collaboration T2K Primary authors: ZITO, Marco (CEA/IRFU,Centre d’etude de Saclay Gif-sur-Yvette (FR)); BLON- DEL, Alain (Universite de Geneve (CH)); SGALABERNA, Davide (Universite de Geneve (CH)) Presenter: SGALABERNA, Davide (Universite de Geneve (CH)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 762 EPS-HEP 2017 / Report of Contributions CMS GEM detector material study … Contribution ID: 963 Type: Poster Presentation CMS GEM detector material study for the HL-LHC A study on the Gaseous Electron Multiplier (GEM) foil material is performed to determine the moisture diffusion rate & saturation level and the moisture effects on its mechanical properties. The study is focused on the foil contact with ambient air and moisture to determine the valueof diffusion coefficient of water in the detector polyimide. The presence of water inside thedetector foil can determine the changes in its mechanical and electrical properties. A simulated model is developed by taking into account the real GEM foil (hole’s dimensions, shapes and material), which describes the adsorption on a sample. This work describes the model, its experimental verification, the water diffusion within the entire sheet geometry of the GEM foil, thus gaining concentration profiles and the time required to saturate the system and the effects on the mechanical properties. Experimental Collaboration CMS Primary author: MUHAMMAD, Saleh (National Centre for Physics, Quaid-I-Azam Univ.) Presenter: MUHAMMAD, Saleh (National Centre for Physics, Quaid-I-Azam Univ.) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 763 EPS-HEP 2017 / Report of Contributions Recent PDF developments and PD … Contribution ID: 964 Type: Parallel Talk Recent PDF developments and PDF needs. Friday, 7 July 2017 16:30 (30 minutes) Overview of recent developments in the PDF field (new PDF sets, new directions), focusing onthe most urgent challenges in the PDF fits and the PDF needs from a point of view of an experimental physicists, for both precision observables and new physics searches. Experimental Collaboration Primary author: GLAZOV, Alexander (Deutsches Elektronen-Synchrotron (DE)) Presenter: GLAZOV, Alexander (Deutsches Elektronen-Synchrotron (DE)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 764 EPS-HEP 2017 / Report of Contributions Resonances and loops: scale interp … Contribution ID: 965 Type: Parallel Talk Resonances and loops: scale interplay in the Higgs effective theory Friday, 7 July 2017 10:00 (15 minutes) I will discuss the structure of the loop corrections in the case of the non-linear EW effective theory and compare it with the low-energy contributions from the exchange of heavy resonances. The convenience of using either the non-linear HEFT or the linear SMEFT will depend on the interplay of the scales that control these two types of contributions. Experimental Collaboration Primary author: SANZ-CILLERO, Juan José (Universidad Complutense de Madrid) Presenter: SANZ-CILLERO, Juan José (Universidad Complutense de Madrid) Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 765 EPS-HEP 2017 / Report of Contributions Jet Energy Calibrations at CMS ex … Contribution ID: 966 Type: Poster Presentation Jet Energy Calibrations at CMS experiment with 13 TeV collisions We present Jet Energy Calibration (JEC) measurements, based on a data sample collected in proton- proton collisions at a center-of-mass energy of 13 TeV recorded by the CMS experiment at the LHC Run 2. The calibration is extracted from data and simulated events and employs combination of several channels and methods. It accounts successively for the effects of pileup, simulated jet response, and residual Jet Energy Scale eta and pT dependences. The residual corrections employ in-situ calibration samples of dijet, photon+jet, Z+jet and multijet events. Several techniques are used to account for the various sources of JES corrections and their uncertainties. Experimental Collaboration CMS Primary author: STOEVER, Marc (Hamburg University (DE)) Presenter: STOEVER, Marc (Hamburg University (DE)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 766 EPS-HEP 2017 / Report of Contributions Data analysis at CMS Level-1 Trig … Contribution ID: 967 Type: Poster Presentation Data analysis at CMS Level-1 Trigger level: Migrating complex selection algorithms from offline analysis and High-Level trigger to the trigger electronics With ever increasing luminosity at the LHC, optimum online data selection is getting more and more important. While in the case of some experiments (LHCb and ALICE) this task is being completely transferred to computer farms, the others - ATLAS and CMS - will not be able to do this in the medium-term future for technological, detector-related reasons. Therefore, these ex- periments pursue the complementary approach of migrating more and more of the offline and high-level trigger intelligence into the trigger electronics. The presentation will illustrate how the Level-1 Trigger of the CMS experiment and in particular its concluding stage, the so-called “Global Trigger”, take up this challenge. Experimental Collaboration CMS Primary author: WULZ, Claudia (Austrian Academy of Sciences (AT)) Presenter: WULZ, Claudia (Austrian Academy of Sciences (AT)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 767 EPS-HEP 2017 / Report of Contributions First SUSY results with GAMBIT Contribution ID: 968 Type: Parallel Talk First SUSY results with GAMBIT Friday, 7 July 2017 15:30 (15 minutes) I will present the first global fit results for supersymmetric models using the new Global AndMod- ular BSM Inference Tool (GAMBIT). With GAMBIT we have performed fits of the GUT-motivated CMSSM, NUHM1 and NUHM2 models, as well as the weak-scale MSSM7, extending existing re- sults in terms of the number of observables included, scanning techniques and treatment of nui- sance parameters. Experimental Collaboration Primary author: KVELLESTAD, Anders (Nordita) Presenter: KVELLESTAD, Anders (Nordita) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 768 EPS-HEP 2017 / Report of Contributions Towards 16 T dipole magnets for F … Contribution ID: 970 Type: Parallel Talk Towards 16 T dipole magnets for Future Circular Colliders Saturday, 8 July 2017 10:40 (25 minutes) The construction of new particle accelerators, more powerful and larger than ever, requires thede- sign and development of high-field superconducting magnets made of Nb3Sn conductor. Beyond obvious challenges pertaining to the size of such machines and consequently, the financial en- deavour, the production of superconducting magnets of accelerator quality, which develop fields much higher than nowadays, calls for a number of design innovations and technological pushes. The Nb3Sn magnets for the High Luminosity LHC, namely the 11T dipole magnet for the upgrade of the LHC collimation system, and the large aperture quadrupole for the new triplets, are a big step forward. The installation in LHC of four 11T dipole magnets is foreseen during the longshut down 2 of the machine that is scheduled in years 2019-2020. It will be the first Nb3Sn magnet ever installed in a particle accelerator. This paper presents the progress at CERN on the development activities relating to the 11 T dipole magnet, with an overview of the technological challenges. The FRESCA II magnet, a 13 T dipole with a 100 mm aperture that will be used to upgrade the CERN cable test facility FRESCA, will be briefly presented, as another step towards higher fields. Finally, an overview of the 16 T dipole magnet programme currently conducted jointly in Europe and in the US will be given, with focus on the design and technology developments. Experimental Collaboration Primary author: SAVARY, Frederic (CERN) Presenter: SAVARY, Frederic (CERN) Session Classification: Accelerators for HEP Track Classification: Accelerators for HEP October 6, 2021 Page 769 EPS-HEP 2017 / Report of Contributions The LHCb RICH Detector Upgrade Contribution ID: 971 Type: Parallel Talk The LHCb RICH Detector Upgrade Friday, 7 July 2017 09:51 (17 minutes) LHCb is one of the four main experiments at the Large Hadron Collider (LHC) at CERN, focused on the study of CP violation and rare decays of b and c quarks. The Ring-Imaging Cherenkov (RICH) system is a crucial component of the LHCb experiment providing identification of charged particles over a large momentum range (2-100 GeV/c) and angular acceptance (15-300 mrad). The LHCb RICH performed extremely well during Run 1 and the current Run2. LHCb will upgrade many of its detector systems during the second LHC long shutdown (2019-2020) in order to sustain a five- fold increase in instantaneous luminosity up to 2×1033 cm−2s−1. In order to reach the planned 40 MHz continuous data taking, a substantial change in the LHCb trigger and read-out schemes will be implemented. The RICH detectors will be upgraded by installing new photo-detectors, electronics and modified optics and mechanics. The status of the RICH upgrade program will bereviewed, including tests of the complete photo-electronic chain in the lab and in dedicated test-beams. Experimental Collaboration on behalf of the LHCb RICH Collaboration Primary author: FIORINI, Massimiliano (Universita di Ferrara & INFN (IT)) Presenter: FIORINI, Massimiliano (Universita di Ferrara & INFN (IT)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 770 EPS-HEP 2017 / Report of Contributions Latest Results From MicroBooNE Contribution ID: 972 Type: Parallel Talk Latest Results From MicroBooNE Thursday, 6 July 2017 12:45 (15 minutes) MicroBooNE is a liquid-argon-based neutrino experiment, which is collecting data in the Fermilab Booster Neutrino Beam. MicroBooNE will directly probe the source of the anomalous excess of electron-like events in MiniBooNE, while also measuring low-energy neutrino cross sections and providing important R&D for future detectors. It is the first of three liquid argon TPC detectors planned for the Fermilab Short Baseline Neutrino program. This talk will give the status of Micro- BooNE and present recent results on the detector technology, on event reconstruction techniques, and from neutrino beam data. Experimental Collaboration MicroBooNE Primary author: Dr AUGER , Martin (LHEP BERN) Presenter: Dr AUGER , Martin (LHEP BERN) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 771 EPS-HEP 2017 / Report of Contributions Universal strangeness production … Contribution ID: 973 Type: Parallel Talk Universal strangeness production and size fluctuactions in small and large systems Thursday, 6 July 2017 16:30 (15 minutes) Strangeness production at high multiplicity gives indications on the transverse size fluctuactions in AA,pA and pp. In particular the universal behavior of strange particle hadronization in small and large systems can be tested for the specific particle species, for different centralities and for large fluctuation of the transverse size in pA and pp by using the recent ALICE data. The expected similar behavior between large and small systems at large energies is discussed on the basis of causality constraints. Experimental Collaboration Primary authors: Prof. SATZ, Helmut (Departmente of Theoretical Physics, Bielefeld University, Germany); Dr FLORIS, Michele (CERN); Prof. CASTORINA, Paolo (Dipartimento Fisica ed Astronomia- Università di Catania, Italy); Dr PLUMARI, Salvatore (Dipartimento Fisica ed Astronomia , UNiversità di Catania, Italy) Presenter: Prof. CASTORINA, Paolo (Dipartimento Fisica ed Astronomia- Università di Catania, Italy) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 772 EPS-HEP 2017 / Report of Contributions Non-Linear Invariance of Black H … Contribution ID: 974 Type: Parallel Talk Non-Linear Invariance of Black Hole Entropy Saturday, 8 July 2017 12:10 (20 minutes) A novel non-linear symmetry of black hole entropy is presented : Freudenthal duality, defined as an anti-involutive, non-linear map acting on symplectic spaces. After a general introduction on some aspects of extended (super)gravity theories in four dimen- sions and the structure of their e.m. duality orbits, I will consider the e.m. duality Lie groups “of type E7”, and the corresponding notion of Freudenthal duality. Extension to Abelian gaugings of supergravity, also including hypermultiplets, will also be briefly discussed. Experimental Collaboration Primary author: Dr MARRANI, Alessio (”Enrico Fermi” Center, Roma, IT) Presenter: Dr MARRANI, Alessio (”Enrico Fermi” Center, Roma, IT) Session Classification: QFT and string theory Track Classification: Quantum Field and String Theory October 6, 2021 Page 773 EPS-HEP 2017 / Report of Contributions Status and Perspectives of KM3Ne … Contribution ID: 975 Type: Parallel Talk Status and Perspectives of KM3NeT/ORCA Thursday, 6 July 2017 17:45 (15 minutes) The KM3NeT collaboration is constructing megaton-scale neutrino detectors at a depth of2500m in the Mediterranean Sea. These detectors, named ARCA and ORCA are each made up of a three-dimensional array ofspheri- cal optical modules, each of which contains 31 3” photomultiplier tubes, designed to detect Cherenkov light emitted by charged leptons produced by neutrino interactions in and around the instrumented volume. These are packed either sparsely (ARCA) or densely (ORCA), depending on the target energy. ORCA, which is under construction off the coast of Toulon in France, will study atmospheric neu- trino oscillations in the 1-100 GeV range. This will address multiple outstanding issues in neutrino oscillation research, including ascertain- ing the neutrino mass ordering. Physics studies indicate that this can be determined with a significance of 3-7 sigma (depending on the true value of the hierarchy and the the value of the mixing angle θ23) after three years of operation. Experimental Collaboration KM3NeT Primary author: Mr QUINN, Liam (CPPM) Presenter: Mr QUINN, Liam (CPPM) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 774 EPS-HEP 2017 / Report of Contributions Status and perspectives of JUNO e … Contribution ID: 976 Type: Parallel Talk Status and perspectives of JUNO experiment Thursday, 6 July 2017 18:00 (15 minutes) Precise measurements of the θ13 neutrino oscillation parameter by the Daya Bay, RENO and Dou- ble Chooz experiments have opened the path to the determination of the neutrino mass hierarchy. Indeed whether the ν3 neutrino mass eigenstate is heavier or lighter than the ν1 and ν2 mass eigenstates is one of the remaining undetermined fundamental aspects of the Standard Model in the lepton sector. Mass hierarchy determination would have an impact in the quest of the neutrino nature (Dirac or Majorana mass terms) towards the formulation of a theory of flavor. In addition to providing an important input to future experiments and other fields like cosmology, the deter- mination of the mass hierarchy would represent a major step forward towards the understanding of the origin and nature of neutrino masses. The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator neutrino detector under construction in the south of China. Thanks to the large 20~kton active mass and unprecedented energy resolution (3% at 1 MeV) it will allow to determine the neutrino mass hier- 2 archy with good sensitivity and to precisely measure the neutrino mixing parameters, θ12, ∆m21 2 and ∆mee with < 1% precision. Moreover, a large liquid scintillator detector will allow to explore physics beyond mass hierarchy determination and provide fundamental results on many topics in astroparticle physics, like supernova burst and diffuse supernova neutrinos, solar neutrinos, atmo- spheric neutrinos, geo-neutrinos, nucleon decay, indirect dark matter searches and a number of additional exotic searches. The talk will review the status of the experiment and give highlights on the physics reach. Experimental Collaboration Juno collaboration Primary author: GIAZ, Agnese Presenter: GIAZ, Agnese Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 775 EPS-HEP 2017 / Report of Contributions Heavy ions at the Future Circular … Contribution ID: 977 Type: Parallel Talk Heavy ions at the Future Circular Collider Friday, 7 July 2017 17:30 (15 minutes) This presentation will review the projected accelerator performance and the physics opportunities for a heavy-ion programme at FCC-hh 1. In addition, the status of the FCC-hh detector design studies will be discussed. The FCC-hh Design Study will assess the feasibility and potential of a hadron collider withacentre- of-mass of 100 TeV for pp collisions. Operating FCC-hh with heavy-ion beams would provide Pb-Pb and p-Pb collisions at center of mass energy of 39 and 63 TeV per NN pair, respectively. Current estimates indicate that a luminos- ity of about 30/nb could be integrated during a one-month Pb-Pb run, that is more than one order of magnitude above the maximum projections for the LHC. The FCC-hh beams could also be used for fixed-target collisions, either with beam extraction or gaseous target. The Quark-Gluon Plasma state produced in Pb-Pb collisions at 39 TeV is expected tohaveinitial temperature and energy density substantially larger than at LHC energy, a stronger flow field and freeze-out volume twice as large. The larger temperature could entail novel features, like e.g. abundant in-medium production of charm quarks. The latter could determine an increase in the number of degrees of freedom of the QGP and provide a new tool to study its temperature evolution. New, rarer, hard probes would be available, like boosted top quarks, which could give access to the time-evolution of the medium opacity. The physics of high gluon densities at small Bjorken-x and the onset of saturation canbestudied using pA, AA, and γA collisions. The FCC-hh will provide access to the region down to x<10−6 with perturbative probes like heavy quarks and quarkonia and to the region of high Q2 down to x∼10−4 with W, Z and top. High-energy photon-photon interactions in ultraperipheral AA collisions will also enable the study of very rare processes such as light-by-light scattering and γγ→W+W−. 1 A. Dainese et al., Heavy ions at the Future Circular Collider, arXiv:1605.01389 Experimental Collaboration Primary author: SALGADO LOPEZ, Carlos Albert (Universidade de Santiago de Compostela (ES)) Presenter: SALGADO LOPEZ, Carlos Albert (Universidade de Santiago de Compostela (ES)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 776 EPS-HEP 2017 / Report of Contributions Precise predictions for V+jet prod … Contribution ID: 978 Type: Parallel Talk Precise predictions for V+jet production Thursday, 6 July 2017 14:30 (30 minutes) The production of electroweak gauge bosons in association with a jet, V+jet, constitutes anim- portant class of standard-candle processes at the LHC. The requirement of an additional hadronic jet in the final state introduces a direct sensitivity to the strong coupling constant and thegluon PDF, while still retaining a large event rate. As such, V+jet production provides an ideal testing ground for our understanding of both strong and electroweak interactions in a hadron-collider environment. I give a brief review of the recent theory developments for this process class and present their phenomenological results. I further discuss how these calculations can be used for closely related observables, such as the pT spectrum of the gauge boson, and their impact on the interpretation of experimental data. Experimental Collaboration Primary author: HUSS, Alexander (ETH Zurich) Presenter: HUSS, Alexander (ETH Zurich) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 777 EPS-HEP 2017 / Report of Contributions ARIADNE, a Photographic Two- … Contribution ID: 979 Type: Poster Presentation ARIADNE, a Photographic Two-Phase LAr TPC ARIADNE is an ERC funded novel and innovative 1-ton two-phase LAr TPC experiment investi- gating photographic imaging as an attractive alternative readout method to charge readout thatis currently planned for future giant two phase LAr neutrino experiments. Advantages over current readout techniques include reduction or elimination of charge read-out channels as well as ease of scalability, upgrade, installation and maintenance. This technology has already been demon- strated at the Liverpool LAr facility with the photographic imaging of the secondary scintillation light produced in THGEM holes induced by cosmic muon tracks and single gamma interactions using a 40-litre prototype. Results will be presented that demonstrate imaging and linear track reconstruction of cosmic rays using an EMCCD camera. An overview and status of the project will be detailed. ARIADNE will mature and validate photographic readout technology and will be fully characterized at a charged particle beam line at CERN. More details of the ARIADNE project can be found at: http://hep.ph.liv.ac.uk/ariadne/ Experimental Collaboration ARIADNE Primary author: ROBERTS, Adam (University of Liverpool (GB)) Presenter: ROBERTS, Adam (University of Liverpool (GB)) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 778 EPS-HEP 2017 / Report of Contributions The Euclid Near Infrared Spectro- … Contribution ID: 980 Type: Poster Presentation The Euclid Near Infrared Spectro-Photometer (NISP) instrument and science Euclid is an ESA mission designed to explore the dark side of the Universe and to understand the nature of the dark energy responsible for the accelerated expansion of the Universe. Its objective is to map the geometry of the dark Universe by investigating the distance-redshift relationship and the evolution of cosmic structures. By measuring two cosmological probes simultaneously, the Weak Gravitational Lensing and the Galaxy Clustering (BAOs and Redshift-Space distorsions), Euclid will constrain dark energy, gen- eral relativity, dark matter and the initial conditions of the Universe with unprecedented accuracy. Each probe has a dedicated instrument in the payload: an imager in the visible domain (VIS) and an imager-spectrometer (NISP) covering the near infrared. Here we present the NISP (Near In- frared Spectro-Photometer) instrument operating in the spectral region 0.9-2μm as a photometer and spectrometer, which will allow measuring the redshifts of galaxies with an accuracy better than 0.1%. The Euclid sensitivity to cosmological parameters as the ones characterising thedark energy equation of state and the sum of neutrino masses will be also presented. Experimental Collaboration Primary authors: SIRIGNANO, Chiara (Physics Department University of Padova & INFN Padova); DUSINI, Stefano (INFN Padova); SIRRI, Gabriele (INFN); STANCO, Luca (Universita e INFN, Padova (IT)); MAURI, Nicoletta; PATRIZII, Laura; FORNARI, Federico (Physics Department, Bologna University and INFN Bologna) Presenter: FORNARI, Federico (Physics Department, Bologna University and INFN Bologna) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 779 EPS-HEP 2017 / Report of Contributions Possible origin(s) of RD(*) flavor a … Contribution ID: 981 Type: Parallel Talk Possible origin(s) of RD(*) flavor anomalies Thursday, 6 July 2017 18:00 (15 minutes) Three key issues pertaining to the semi-leptonic RD(*) anomalies will be addressed here: 1) How robust are the SM predictions? 2) What are the model-independent collider signature of these anomalies? 3) What are some of the simplest BSM explanations for these? In answer to 1) latest information from on and off the lattice will be critically examined to question, in particular the reliability of the stated theory error. Reg 2) It will be shown that the semi-leptonic anomalies rigorously imply unavoidable collider signatures that the LHC experimental community should ASAP vigorously pursue to confirm or refute these anomalies. Lastly, but nevertheless of considerable importance, reg 3), is the issue of what interesting, and theoretically well motivated, underlying extensions of the SM are there that could be responsible for these anomalies assuming they withstand further scrutiny and the test of time. This talk is based in significant part on work done and in progress with Wolfgang Altmannshofer and Bhupal Dev. Experimental Collaboration Primary authors: SONI, Amarjit (Brookhaven National Lab); SONI, Amarjit Presenter: SONI, Amarjit (Brookhaven National Lab) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 780 EPS-HEP 2017 / Report of Contributions Unitarity Triangle Analysis and D … Contribution ID: 984 Type: Parallel Talk Unitarity Triangle Analysis and D meson mixing in the Standard Model and Beyond Friday, 7 July 2017 18:00 (15 minutes) We present the current status of the Unitarity Triangle Analysis in the Standard Model and in the presence of New Physics, as well as a global analysis of D meson mixing data. Based on these results, we obtain constraints on New Physics in Delta F = 2 processes and present bounds on the scale of New Physics. Experimental Collaboration Presenters: SILVESTRINI, Luca (INFN Rome); BONA, Marcella (Queen Mary University of London (UK)) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 781 EPS-HEP 2017 / Report of Contributions Observable Gravitational Waves fr … Contribution ID: 986 Type: Parallel Talk Observable Gravitational Waves from Higgs Inflation in SUGRA Friday, 7 July 2017 09:15 (15 minutes) Abstract content We consider models of chaotic inflation driven by the real parts of a conjugate pair of Higgs superfields involved in the spontaneous breaking of a grand unification symmetry at a scale assuming its Supersymmetric value. Employing Kaehler potentials with a prominent shift-symmetric part proportional to c- and a tiny violation, proportional to c+, included in a logarithm we show that the inflationary observables provide an excellent match to the recent Planck and Bicep2/Keck Array results setting, e.g., 0.012<= c+/c- <=1/N where N=2 or 3 is the prefactor of the logarithm. Deviations of these prefactors from their integer values above are also explored and a region where hilltop inflation occurs is localized. Moreover, we analyze several possible stabilization mechanisms for the non-inflaton accompanying superfield using just quadratic terms. In all cases, inflation can be attained for subplanckian inflaton values with the corresponding effective theories retaining the perturbative unitarity up to the Planck scale. Experimental Collaboration Primary author: PALLIS, Costas (University of Cyprus) Presenter: PALLIS, Costas (University of Cyprus) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 782 EPS-HEP 2017 / Report of Contributions Inflation with dissipation and met … Contribution ID: 987 Type: Parallel Talk Inflation with dissipation and metastability Friday, 7 July 2017 09:45 (15 minutes) We analyze two models in which primordial inflation has non-standard features. In the first model we study the evolution of a system in which the inflaton is slowed down by dissipation of energy into gauge bosons instead of the usual Hubble friction: in particular we study the conditions of the onset of such a scenario from a static field configuration and we briefly mention some difficulties of the treatment of perturbations. In the second model we consider the case of a metastable vacuum which sources exponential inflation and we show that the presence of scalar-tensor gravity can induce a power-law expansion which allows successful tunneling. We also analyze the case in which such a metastable vacuum might be in the Standard Model Higgs potential. Experimental Collaboration Primary author: Dr NOTARI, Alessio (Universitat de Barcelona) Presenter: Dr NOTARI, Alessio (Universitat de Barcelona) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 783 EPS-HEP 2017 / Report of Contributions EFT probes of new physics Contribution ID: 988 Type: Parallel Talk EFT probes of new physics Friday, 7 July 2017 09:00 (30 minutes) I will explain various EFT approaches to learn about possible new physics lying beyond the SM. Particular emphasis will be put on EWSB physics and operators that break EW symmetry beyond the SM. Experimental Collaboration Primary author: ELIAS MIRO, Joan (SISSA) Presenter: ELIAS MIRO, Joan (SISSA) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 784 EPS-HEP 2017 / Report of Contributions Interplay of QCD and EW correcti … Contribution ID: 989 Type: Parallel Talk Interplay of QCD and EW corrections and precision physics at hadron colliders Thursday, 6 July 2017 16:30 (30 minutes) Precision tests of the Standard Model can be successfully performed at the LHC only if QCD and EW radiative corrections are under control. In this presentation I will discuss the non trivial interplay between the two sets of corrections, using several observables which can be measured in the Drell-Yan processes to illustrate the conceptual and technical problems that arise in the determination of EW parameters with an accuracy below the per mil level. Experimental Collaboration Primary author: VICINI, Alessandro (Università degli Studi e INFN Milano (IT)) Presenter: VICINI, Alessandro (Università degli Studi e INFN Milano (IT)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 785 EPS-HEP 2017 / Report of Contributions Chiral Magnetic Effect in the Dirac- … Contribution ID: 990 Type: Parallel Talk Chiral Magnetic Effect in the Dirac-Heisenberg-Wigner formalism Friday, 7 July 2017 11:30 (15 minutes) The emergence of the Chiral Magnetic Effect (CME) and the related anomalous current isinves- tigated using the real time Dirac-Heisenberg-Wigner formalism. This method is widely used for describing strong field physics and QED vacuum tunneling phenomena as well as pair-production in heavy-ion collisions. We extend earlier investigations of the CME in constant flux tube config- uration by considering time dependent fields. In our model we can follow the formation ofaxial charge separation, formation of axial current and then the emergence of the anomalous electric current. Qualitative results are shown for special field configurations that help interpret thepre- dictions of CME related effects in heavy-ion collisions in the RHIC Beam Energy Scan program. Experimental Collaboration Theoretical Paper Primary author: LEVAI, Peter (MTA Wigner RCP) Co-author: BERENYI, Daniel (Hungarian Academy of Sciences (HU)) Presenter: LEVAI, Peter (MTA Wigner RCP) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 786 EPS-HEP 2017 / Report of Contributions Neutrino electromagnetic properti … Contribution ID: 991 Type: Parallel Talk Neutrino electromagnetic properties: a window to new physics Saturday, 8 July 2017 13:00 (15 minutes) A review of the theory and phenomenology of neutrino electromagnetic properties is presented. A short discussion on derivation of the general structure of the electromagnetic interactions of Dirac and Majorana neutrinos is presented. Then we review experimental constraints on neutrino mag- netic and electric dipole moments, electric millicharge, charge radius and anapole moments from the terrestrial laboratory experiments. A special credit is done to bounds on neutrino magnetic moments obtained by the reactor (MUNU, TEXONO and GEMMA) and solar (Super-Kamiokande and Borexino) experiments. The effects of neutrino electromagnetic interactions in astrophysical environments arealsore- viewed. The main manifestation of neutrino electromagnetic interactions, such as: 1) the radiative decay in vacuum, in matter and in a magnetic field, 2) the Cherenkov radiation, 3) the plasmon decay, 4) spinlightin matter, 5) spin and spin-flavour precession, 6) neutrino pair production in a strong magneticfield, and the related processes along with their astrophysical phenomenology are also considered. The best world experimental bounds on neutrino electromagnetic properties are confronted with the predictions of theories beyond the Standard Model. It is shown that studies of neutrino elec- tromagnetic properties provide a powerful tool to probe physics beyond the Standard Model. References 1 C. Guinti and A. Studenikin, “Neutrino electromagnetic interactions: a window to new physics”, Rev. Mod. Phys. 87 (2015) 531. [2] K. Kouzakov, A. Studenikin, Phys. Rev. D 95, (2017) 055013. [3] A. Studenikin, “New bounds on neutrino electric millicharge from limits on neutrino magnetic moment”, Europhys. Lett. 107 (2014) 21001. [4] A. Studenikin, I. Tokarev, “Millicharged neutrino with anomalous magnetic moment in rotating magnetized matter”, Nucl. Phys. B 884 (2014) 396. [5] K.Kouzakov, A.Studenikin, Adv. High Energy Phys. 2014 (2014) 569409 (16 p.). Experimental Collaboration I am the member of the GEMMA Collaboration Primary author: STUDENIKIN, Alexander Presenter: STUDENIKIN, Alexander Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 787 EPS-HEP 2017 / Report of Contributions QUBIC: the Q&U Bolometric Inter … Contribution ID: 992 Type: Parallel Talk QUBIC: the Q&U Bolometric Interferometer for Cosmology. A novel way to look at the polarized Cosmic Microwave Background. Friday, 7 July 2017 11:45 (15 minutes) In this presentation I will talk about QUBIC, an experiment that takes up the challenge posed by the detection of primordial gravitational waves with a novel approach. Detecting the signature left by primordial gravity waves in the Cosmic Microwave Background (CMB) entails measuring a tiny polarized component of the CMB, the so-called B-modes, that is literally buried in polarized astrophysical foregrounds and can be disguised by instrumental systematic effects. Deploying instruments with tens of thousands of detectors is not enough to measure this elusive, sub-μK signal; one has to effectively control the foreground and instrumental contributions. QUBIC re- sponds to these needs by combining the sensitivity of state-of-the art bolometric detectors with the systematic effects control typical of interferometers, allowing us to clean the measured data from instrumental effects by exploiting the so-called “self-calibration”, a technique deeply rooted in the interferometric nature of the instrument. In my talk I will first highlight the challenges posed by CMB B-modes measurements and then focus on the development of the first module of QUBIC, a dual band instrument (150 GHz and 220 GHz) that will be deployed in Argentina during the Fall of 2018. Experimental Collaboration QUBIC Primary author: Prof. MENNELLA, Aniello (University of Milan, Department of Physics) Presenters: Prof. MENNELLA, Aniello (University of Milan, Department of Physics); MENNELLA, Aniello (Università di Milano - Physics) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 788 EPS-HEP 2017 / Report of Contributions Neutrino spin procession and oscil … Contribution ID: 993 Type: Poster Presentation Neutrino spin procession and oscillations in transversal matter currents It was shown for the first time in 1 (see also [2,3]) that neutrino spin (and spin-flavor) precession can be engendered not only by neutrino interaction with the transversal magnetic field but also by neutrino interaction with matter when there is a transversal matter current or matter polarization. Recently this effect hasat- tracted reasonable interest within studies of neutrino fluxes from supernovae (see [4] and ref- erences therein). In the proposed presentation we present a rigorous derivation of neutrino spin and spin-flavor evolution effective Hamiltonians accounting for interactions with magnetic fields and matter transversal currents. The effect of the transversal matter current as an originforneu- trino spin oscillations has been also checked and confirmed on the basis of the exact solution for the Dirac equation for a neutrino wave function in moving matter (see also [7]). The neutrino spin and spin-flavor oscillation probabilities are obtained for different cases that are of interest for astrophysical applications. 1 A. Studenikin, Neutrinos in electromagnetic fields and moving media, Phys. Atom. Nucl. 67 (2004) 993. [2] A. Studenikin, Neutrino spin and spin-flavour oscillations in transversally moving or polarized matter, Journal of Physics: Conference Series 718 (2016) 062076; arXiv: 1610.06563. [3] A. Studenikin, From neutrino electromagnetic interactions to spin oscillations in transversal matter currents, PoS (NOW2016) 070. [4] A.Dobrynina, A. Kartavtsev and G. Raffelt, Helicity oscillations of Dirac and majorana neutri- nos, Phys. Rev. D 93 (2016) 125030. [5] P.Pustoshny, Neutrino flavor oscillations in a magnetic field and arbitrary moving matter, Bach- elor thesis, Department of Theoretical Physics, Moscow State University, 2017. [6] A.Popov, Neutrino spin oscillations in moving matter, Bachelor thesis, Department of Theoret- ical Physics, Moscow State University, 2017. [7] I.Balantsev, A.Studenikin, Int.J.Mod.Phys.A 30 (2015) 1530044. Experimental Collaboration Primary authors: Mr POPOV, Artem (master student at Department of Theoretyical Physics of Moscow State University); Mr PUSTOSHNY, Pavel (master student, Department of Theoretical Physics, Moscow State UNiversity) Co-authors: BALANTSEV, Ilya (Moscow State University); STUDENIKIN, Alexander Presenter: Mr POPOV, Artem (master student at Department of Theoretyical Physics of Moscow State University) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 789 EPS-HEP 2017 / Report of Contributions Neutrino quantum decoherence du … Contribution ID: 994 Type: Poster Presentation Neutrino quantum decoherence due to entanglement with a magnetic field The origin of neutrino oscillations phenomena emerges due to coherent superposition of different neutrino states. Such superposition can be destroyed by quantum decoherence that appears from entanglement of neutrino with environment. This quantum decoherence can cause suppression of different neutrino oscil- lations. In this work we study suppression of neutrino-antineutrino oscillations as a result of coupling with a magnetic field. For this aim we describe system composed of neutrinos anda magnetic field by density matrix. It gives an opportunity to trace out degrees of freedom of magnetic field and thus to get reduced sys- tem, which consists of only neutrinos. The reduced system is described by non-hermitian Hamil- tonian that provides suppression of neutrino-antineutrino oscillations. It is shown that this new effect of quantum decoherence is important in strong magnetic fields peculiar for neutron stars. Experimental Collaboration Primary authors: STUDENIKIN, Alexander; STANKEVICH, Konstantin (Lomonosov Moscow State University) Presenter: STANKEVICH, Konstantin (Lomonosov Moscow State University) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 790 EPS-HEP 2017 / Report of Contributions Spin-light of neutrino in astrophys … Contribution ID: 995 Type: Poster Presentation Spin-light of neutrino in astrophysical media The Spin Light of Neutrino (SLν) is a new possible mechanism of electromagnetic radiation by a massive neutrino (with nonzero magnetic moment) moving in media 1. Although this effect is strongly suppressed due to smallness of neutrino magnetic moment, for ultra-high neutrino energies, for instance for PeV neutrino recently observed by the IceCube collaboration [2], con- sideration of the SLν is of interest in the case of neutrinos propagating in dense matter. Several astrophysical settings in which the effect might be possible, such as a neutron star, supernova, gamma-ray burst, and relic neutrino background, are considered. We also note that due to the specific polarization properties the SLν should be considered in connected with the observed po- larization of GRB emission [3]. 1 A. Lobanov and A. Studenikin, Spin light of neutrino in matter and electromagnetic fields, Phys. Lett. B 564 (2003) 27; A. Studenikin and A.Ternov, Neutrino quantum states and spin light inmatter, Phys.Lett. B 608 (2005) 107; A.Grigoriev, A. Studenikin,A.Ternov, Quantum theory of neutrino spin light in dense matter, Phys. Lett. B 622 (2005) 199; A.Grigoriev, A.Lokhov, A.Studenikin, A.Ternov, The effect of plasmon mass on spin light of neutrino in dense matter, Phys. Lett. B718(2012)512. [2] M. Aartsen. et al (IceCube Collaboration), A combined maximum-likelihood analysis of the high-energy astrophysical neutrino flux measured with IceCube, Astrophys. J. 809 (2015) 98. [3] S.Covino, D.Gotz, Polarization of prompt and afterglow emission of Gamma-Ray Bursts A&AT, Vol. 29 (2016) 205. Experimental Collaboration Primary authors: STUDENIKIN, Alexander; LOKHOV, Alexey (MSU); Dr GRIGORIEV, Alexander (Department of Theoretical Physics, Moscow State University); Prof. TERNOV, Alexey (Department of Theoretical Physics, Moscow Institute for Physics and Technology) Presenter: STUDENIKIN, Alexander Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 791 EPS-HEP 2017 / Report of Contributions Newest COMPASS results on long … Contribution ID: 996 Type: Parallel Talk Newest COMPASS results on longitudinal and transverse nucleon spin structure. Friday, 7 July 2017 15:00 (15 minutes) The COMPASS experiment at CERN has performed a rich programme in inclusive and semi-inclusive deep inelastic scattering of longitudinally polarised muons off longitudinally, transversely po- larised and unpolarised nucleons. The main topic is the investigation of the spin structure of the nucleon in terms of quark and gluons, both through accessing the spin dependent collinear parton distribution functions and through studying the transverse momentum dependent TMD PDFs. The newest results on the spin structure function of the proton and the deuteron, onthe transversity and Sivers PDFs and the measurements of hadron multiplicities will be shown. Plans for the near future will also be presented. Experimental Collaboration COMPASS Presenter: LEVORATO, Stefano (Universita e INFN, Trieste (IT)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 792 EPS-HEP 2017 / Report of Contributions Review on Top quark anomalous c … Contribution ID: 997 Type: Parallel Talk Review on Top quark anomalous coupling studies Friday, 7 July 2017 16:30 (30 minutes) I review the status of the top quark couplings studies. The discussion is focused on anomalous electroweak interactions, which are largely unconstrained by hadron collider experiments. Pos- sible anomalous interactions in Quantum Chromodynamics are reviewed, as well. In addition to hadron collider experiments, I discuss constraints from B-physics experiments and future colliders. Experimental Collaboration Primary author: SCHULZE, Markus (Humboldt-University Berlin) Presenter: SCHULZE, Markus (Humboldt-University Berlin) Session Classification: Top and electroweak Track Classification: Top and Electroweak Physics October 6, 2021 Page 793 EPS-HEP 2017 / Report of Contributions Loop corrections to pion and kaon … Contribution ID: 998 Type: Parallel Talk Loop corrections to pion and kaon production Saturday, 8 July 2017 10:15 (15 minutes) In this talk we present results of our study of the next-to-leading order corrections to deeply vir- tual pion and kaon production in neutrino experiments. We estimate these corrections in the kinematics of the Minerva experiment at FERMILAB, and find that they are sizable and increase the leading order cross-section by up to a factor of two. Also, we estimate the cross-sections of the charged-current mediated pion and kaon production in electron-induced processes. Experimental Collaboration Primary authors: SIDDIKOV, Marat (Universidad Santa Maria); SCHMIDT, Ivan Presenter: SIDDIKOV, Marat (Universidad Santa Maria) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 794 EPS-HEP 2017 / Report of Contributions Flavour Physics meets Heavy Higg … Contribution ID: 999 Type: Parallel Talk Flavour Physics meets Heavy Higgs Searches Thursday, 6 July 2017 15:45 (15 minutes) We point out that the stringent lower bounds on the masses of additional neutral and charged Higgs bosons crucially depend on the flavour structure of their Yukawa interactions. We show that these bounds can easily be evaded when flavour violation is allowed in the Higgs sector. As an illustration, we study the phenomenology of a two Higgs doublet model with a Yukawa texture arising from charging the right-handed top quarks under a new U(1)PQ symmetry, as arising from a variant axion model. We combine constraints from both low energy flavour physics mea- surements, LHC measurements of Higgs boson rates, and LHC searches for new Higgs bosons. We propose novel LHC searches for heavy Higgs bosons that could be performed in the coming years to unravel the existence of these new Higgs bosons. Experimental Collaboration Primary authors: GORI, Stefania (Perimeter Institute/Cincinnati University); GROJEAN, Christophe (DESY (Hamburg) and Humboldt University (Berlin)); JUSTE ROZAS, Aurelio (ICREA and IFAE (ES)); PAUL, Ayan (INFN, Sezione di Roma) Presenter: PAUL, Ayan (INFN, Sezione di Roma) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 795 EPS-HEP 2017 / Report of Contributions Development of Electromagnetic C … Contribution ID: 1001 Type: Poster Presentation Development of Electromagnetic Calorimeter Using LYSO Crystals for the COMET Experiment at J-PARC An electromagnetic calorimeter (ECAL) has been developed for the COMET experiment at J-PARC in Japan, which searches for muon-to-electron conversion of a charged lepton flavor violating pro- cess. The observation of this process forbidden in the standard model (SM) gives a clear evidence ofnew physics beyond the SM. The experiment aims at achieving a single event sensitivity of 10−17 by using a very intense pulsed proton beam and a dedicated beam line. The detector system consists of an upstream tracker and the ECAL with an active area ofabout1 m diameter. Aluminum is used for the muon stopping target and signal electrons are emitted with a fixed en- ergy of 105 MeV. Decay-in-orbit (DIO) process, in which the electron energy reaches the signal region, also occurs as an irreducible background. The ECAL plays an important role in the trigger, so required to have an excellent energy resolution of < 5% at 105 MeV to suppress contamination from the DIO electrons. In addition, a position resolution of < 1 cm and time response of < 100 nsec are required to distin- guish each of pile-up events. To meet those requirements, the ECAL consists of LYSO (Lu2−xYxSiO5) scintillating crystals with a dimension of 20 × 20 × 120 mm3. They have a high light yield and short decay constant com- pared to conventional inorganic scintillators. Since the detector system is operated in a vacuum of < 100 Pa and magnetic field of 1 T, Avalanche Photo Diode with a sensitive area of 10 × 10 mm2 is adopted as the photodetector and its signals are processed by a fast low-noise preamplifier. We constructed the final prototype before its construction and its performance was studied with an electron beam. The result showed an excellent linearity within 0.5%, energy resolution of 4.2%, and position reso- lution of 7.6 cm at 105 MeV. Details of the experimental result and the ECAL design including its whole system will be reported in this talk. Experimental Collaboration COMET Primary author: OISHI, Kou (Kyushu University) Co-authors: HAMADA, Eitaro; DMITRY, Grigoriev (Budker Institute of Nuclear Physics); NISHIGUCHI, Hajime (KEK); YAMAGUCHI, Hiroshi (High Energy Accelerator Research Organization (KEK)); TOJO, Junji (Kyushu University (JP)); UENO, Kazuki (KEK); KAWAGOE, Kiyotomo (Kyushu University (JP)); NOGUCHI, Kyohei (Kyushu University); Mr EPSHTEYN, Leonid (Budker Institute of Nuclear Physics); TANAKA, Manobu (KEK); IKENO, Masahiro (High Energy Accelerator Research Organization (KEK)); SHOJI, Masayoshi (High Energy Accelerator Research Organization (KEK)); LEE, MyeongJae (Institute for October 6, 2021 Page 796 EPS-HEP 2017 / Report of Contributions Development of Electromagnetic C … Basic Science (Korea)); EVTOUKHOVITCH, Petr (JINR); MIHARA, Satoshi (KEK); SAITO, Takashi (Kyushu University); YOSHIOKA, Tamaki (Kyushu University); UCHIDA, Tomohisa (High Energy Accelerator Research Organization (KEK)); FUKAO, Yoshinori (High Energy Accelerator Research Or- ganization (KEK)); KUNO, Yoshitaka (Osaka University); Dr IGARASHI, Youichi (KEK); FUJII, Yuki (High Energy Accelerator Research Organization); NAKAI, Yuki (Kyushu Unviersity); YUDIN, Yury (Budker Institute of Nuclear Physics); TSAMALAIDZE, Zviadi (JINR) Presenter: OISHI, Kou (Kyushu University) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 797 EPS-HEP 2017 / Report of Contributions SUSY contributions in light of rece … Contribution ID: 1002 Type: Parallel Talk SUSY contributions in light of recent ϵ′/ϵ Saturday, 8 July 2017 12:15 (15 minutes) Recently, the standard model prediction of ϵ′/ϵ was improved, and a discrepancy from the experimental results was reported at the 2.9σ level. We study the charging contributions to Z penguin especially with the vacuum stability constraint. The vacuum decay rate is investigated, and it is shown that the discrepancy can be explained if super particles are lighter than 4 − 6TeV. 0 Correlations with B(KL → π νν¯) is also discussed. We also study the gluino contributions to Z penguin. Experimental Collaboration Primary authors: Mr UEDA, Daiki (Sokendai); Dr YAMAMOTO, Kei; Dr ENDO, Motoi (Theory Center, IPNS, KEK); Dr MISHIMA, Satoshi Presenters: UEDA, Daiki (SOKENDAI); Mr UEDA, Daiki (Sokendai) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 798 EPS-HEP 2017 / Report of Contributions Neutrino electromagnetic properti … Contribution ID: 1003 Type: Poster Presentation Neutrino electromagnetic properties and neutrino oscillations Electromagnetic properties of massive neutrinos 1 and their effects on neutrino oscillation phe- nomena are brought into focus. The searches for neutrino millicharges, charge radii and magnetic moments in astrophysics and laboratory measurements are outlined [2,3]. Prospects of probing these neutrino characteristics with JUNO are discussed. 1 C. Giunti and A. Studenikin, Neutrino electromagnetic interactions: A window to new physics, Rev. Mod. Phys. 87, 531 (2015). [2] C. Giunti, K. A. Kouzakov, Y.-F. Li, A. V. Lokhov, A. I. Studenikin, and S. Zhou, Electromagnetic neutrinos in laboratory experiments and astrophysics, Ann. Phys. (Berlin) 528, 198 (2016). [3] K. A. Kouzakov and A. I. Studenikin, Electromagnetic properties of massive neutrinos in low- energy elastic neutrino-electron scattering, Phys. Rev. D 95, 055013 (2017). Experimental Collaboration Primary authors: GIUNTI, Carlo (INFN - National Institute for Nuclear Physics); KOUZAKOV, Konstantin (Lomonosov Moscow State University); LI, Yufeng (Institute of High Energy Physics, Chi- nese Academy of Sciences); LOKHOV, Alexey (MSU); STUDENIKIN, Alexander (Moscow State Univer- sity); XING, Zhi-zhong (Chinese Academy of Sciences); Dr ZHOU, Shun (IHEP, CAS, Beijing) Presenters: GIUNTI, Carlo (INFN - National Institute for Nuclear Physics); KOUZAKOV, Konstantin (Lomonosov Moscow State University); STUDENIKIN, Alexander (Moscow State University) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 799 EPS-HEP 2017 / Report of Contributions Elastic scattering of electromagnet … Contribution ID: 1004 Type: Poster Presentation Elastic scattering of electromagnetic neutrinos on electrons In the standard model neutrinos are massless left-handed fermions which very weakly interact ± with matter via exchange of the W and Z0 bosons. The development of our knowledge about neutrino masses and mixing provides a basis for exploring neutrino properties and interactions beyond the standard model (BSM). In this respect, the study of electromagnetic characteristics of massive neutrinos is of particular interest 1. These characteristics include the electric charge (mil- licharge), the charge radius, the dipole magnetic and electric moments, and the anapole moment. Their effects can be searched in laboratory measurements of low-energy elastic (anti)neutrino- electron scattering in reactor, accelerator, and solar experiments. The present contribution aims at delivering a thorough account of electromagnetic interactions of massive neutrinos in the theoretical formulation of low-energy elastic neutrino-electron scattering [2]. The formalism of neutrino charge, magnetic, electric, and anapole form factors definedas matrices in the mass basis is employed under the assumption of three-neutrino mixing. The flavor change of neutrinos traveling from the source to the detector is taken into account and the role of the source-detector distance is inspected. The effects of neutrino flavor-transition millicharges and charge radii in the scattering experiments are pointed out. 1 C. Giunti and A. Studenikin, Neutrino electromagnetic interactions: A window to new physics, Rev. Mod. Phys. 87, 531 (2015). [2] K. A. Kouzakov and A. I. Studenikin, Electromagnetic properties of massive neutrinos in low- energy elastic neutrino-electron scattering, Phys. Rev. D 95, 055013 (2017). Experimental Collaboration Primary authors: KOUZAKOV, Konstantin (Lomonosov Moscow State University); STUDENIKIN, Alexander (Moscow State University) Presenters: KOUZAKOV, Konstantin (Lomonosov Moscow State University); STUDENIKIN, Alexan- der (Moscow State University) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 800 EPS-HEP 2017 / Report of Contributions An Intermediate Water Cherenkov … Contribution ID: 1005 Type: Parallel Talk An Intermediate Water Cherenkov Detector for the T2K and Hyper-K Experiments Thursday, 6 July 2017 15:30 (15 minutes) The Japan based long baseline neutrino program aims for the discovery of CP violation inneutrino mixing and precision measurements of neutrino oscillation parameters at the T2K and Hyper-K experiments. Achieving these goals will require the collection of large data sets and the reduc- tion of systematic uncertainties to the few percent level. Dominant systematic errors arise in the modeling of (anti)neutrino-nucleus interactions in water, and these errors can be reduced with measurements in an intermediate water Cherenkov detector located near the neutrino source at J-PARC. To this end, intermediate water Cherenkov detectors such as NuPRISM and TITUS have been proposed. These detectors include features such as an off-axis angle spanning configuration to measure the energy dependence of neutrino interactions and Gd loading to measure final state neutron multiplicities in neutrino interactions. In this talk, we present a unified program for in- termediate water Cherenkov detectors in the J-PARC neutrino beam that supports that physics programs of T2K and Hyper-K. Experimental Collaboration Primary author: Dr WILKING , Michael Presenter: Dr WILKING , Michael Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 801 EPS-HEP 2017 / Report of Contributions Precision Calculations to Top- and … Contribution ID: 1007 Type: Parallel Talk Precision Calculations to Top- and Bottom-Yukawa Couplings within the SM and BSM Thursday, 6 July 2017 16:30 (15 minutes) In this talk we would like to report on our recent calculations of the mixed QCD-EW corrections to the top- and bottom Yukawa couplings within the Standard Model (SM) and beyond (THDM, MSSM). After a brief review of the SM calculations, we would like to concentrate on the comparison SM/BSM and on the non-decoupling behavior of these corrections that might open a new window to indirect searches for new physics. Experimental Collaboration Primary author: Dr MIHAILA, Luminita (ITP, University of Heidelberg) Presenters: Dr MIHAILA, Luminita (ITP, University of Heidelberg); MIHAILA, Luminita (Uni Hei- delberg) Session Classification: Higgs and new physics Track Classification: Higgs and New Physics October 6, 2021 Page 802 EPS-HEP 2017 / Report of Contributions Looking for New Physics in the Sa … Contribution ID: 1008 Type: Parallel Talk Looking for New Physics in the Satellites of the Milky Way Friday, 7 July 2017 09:30 (15 minutes) Sitting at the faint end of the galaxy luminosity function, dwarf spheroidal galaxies oftheMilky Way are among the most compelling targets for Dark Matter indirect searches, being character- ized by large mass-to-light ratios and small baryonic background and foreground. In this talk we review the assumptions at the basis of the estimate of the Dark Matter content in these galaxies as extensively studied in the literature. Then, we present a novel method in order to conserva- tively assess the impact of the mass-anisotropy degeneracy plaguing the outcome of these indirect Dark Matter searches. This new approach is based on the inversion of the spherical Jeans equation (arXiv:1603.07721). Going beyond the standard Cold Dark Matter paradigm, we eventually com- ment on the unique opportunity these galaxies offer to us in the quest for the fundamental nature of Dark Matter. Experimental Collaboration Primary author: VALLI, Mauro (INFN Rome) Co-authors: ULLIO, Piero (SISSA); YU, Hai-Bo (University of Michigan) Presenter: VALLI, Mauro (INFN Rome) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 803 EPS-HEP 2017 / Report of Contributions High precision reconstruction of e … Contribution ID: 1009 Type: Poster Presentation High precision reconstruction of electromagnetic showers in the nuclear emulsions of the OPERA experiment We present an automatic procedure developed to reconstruct electromagnetic (EM) showers in the nuclear emulsions of the OPERA long baseline neutrino experiment. OPERA was designed to investigate muon neutrino oscillations using so called Emulsion Cloud Chambers (ECC). Electronic detectors completed the ECC, where lead plates constituting the tar- get mass were interleaved with nuclear emulsion films providing the high spatial resolution. The reconstruction and measurement of EM shower is not trivial because it is very difficultto distinguish electrons belonging to the shower from back-ground tracks and the reconstruction of low energy electrons is a very delicate job in nuclear emulsions. Thus EM showers study is usu- ally performed by reconstructing shower track segments in emulsion films and trying to associate segments from film to film; it is also complemented by visual inspections. The presented technique aims to reduce the load of visual inspections by means of a very detailed image analysis. Image acquisition is performed by a CCD camera mounted on a motorized stage and it is performed with a 1 µm pitch in depth. Silver grains are recognized and used to reconstruct the tracks produced by charged particles. This precise 3D tomographic technique has a spatial res- olution of 0.1 µm and an angular resolution of 1 mrad. Those accuracies are useful to reduce visual inspection keeping a track reconstruction efficiency close to 100% and a purity close to95%. Primary electron/photon energy can be correlated to the number of reconstructed tracks in emul- sion and the calibration is optimized using a sample of Monte Carlo events. The identification and reconstruction efficiencies on electromagnetic showers will be shown . The procedure is usedto study short lived particle decay candidate events in ECC, possibly associated with tau and charm production. Experimental Collaboration OPERA collaboration Primary authors: LAUDISIO, Fulvio (University of Padova & INFN Padova); Dr SIRIGNANO, Chiara (Uiversity of Padova) Presenter: LAUDISIO, Fulvio (University of Padova & INFN Padova) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 804 EPS-HEP 2017 / Report of Contributions Production and characterization of … Contribution ID: 1010 Type: Poster Presentation Production and characterization of large-size diamond detectors for particle tracking and medical applications For several years, a team of 20 scientists from ESRF, IPHC Strasbourg, IPN Lyon and LPSC Grenoble has been working to study the detection properties of large-size diamond detectors from several suppliers, with the aim of achieving reliable & efficient sensors for particle tracking or medical applications. High radiation hardness and intrinsic electronic properties make diamonds reliable & very fast detectors with a good signal-to-noise ratio. Poly- and single-crystal CVD diamond samples were tested under various ionizing particles. Their metalization was performed by using Distributed MicroWave Plasmas, a fully original technology developed by LPSC. Their applicability as particle detector was investigated using α and β radioac- tive sources, 95 MeV/u carbon beams from GANIL (Caen) and short-bunched 8.5 keV photons from ESRF. This last facility offers unique capability of highly focused beams, together with anenergy deposition which is almost uniform in the irradiated volume, as it would be for minimum-ionizing particles or single protons and carbon ions used for hadrontherapy. The MoniDiam project of LPSC is part of the French national collaboration CLaRyS for theon-line dose monitoring of hadrontherapy. It relies on the imaging of nuclear reaction products that are related to the ion interaction in the human tissue. The goal here is to provide large-area detectors with a high detection efficiency for carbon or proton beams, yielding time and position measure- ment at count rates greater than 100 MHz (beam tagging hodoscope). A time resolution ranging from 20 ps up to 40 ps and an energy resolution varying from 7 % up to 10% were measured. It allowed us to conclude that polycrystalline CVD diamond detectors are good candidates for our beam tagging hodoscope development. The final detector will be a ~15×15 cm2 mosaic madeof stripped-diamond sensors read by a dedicated integrated fast read-out electronics (~1800 channels). Experimental Collaboration Primary author: COLLOT, Johann (LPSC, university Grenoble Alpes (FR)) Co-authors: HOSTACHY, Jean-Yves (LPSC, CNRS/IN2P3); GALLIN-MARTEL, Laurent (LPSC/IN2P3 Grenoble); GALLIN-MARTEL, Marie-Laure (LPSC Laboratoire de Physique Subatomique et de Cosmolo- gie (LPSC)); DAUVERGNE, Denis (LPSC, CNRS/IN2P3); MORSE, John (ESRF); MURAZ, Jean-Francois (Centre National de la Recherche Scientifique (FR)); RARBI, Fatah (IN2P3 / LPSC Grenoble); LACOSTE, Ana (LPSC); BES, Alexandre (LPSC); TESTA, Étienne (IPNL); BOSSON, Germain (LPSC); YAMOUNI, Mahfoud (LPSC); SALOMÉ, Murielle (ESRF); KRIMMER, Jochen (IPNL); FONTANA, Mattia (IPNL); CUR- TONI, Sébastien (LPSC); MARCATILI, Sara (LPSC); BROM, Jean-Marie (Institut Pluridisciplinaire Hu- bert Curien (FR)) Presenter: COLLOT, Johann (LPSC, university Grenoble Alpes (FR)) Session Classification: Poster session October 6, 2021 Page 805 EPS-HEP 2017 / Report of Contributions Production and characterization of … Track Classification: Detector R&D and Data Handling October 6, 2021 Page 806 EPS-HEP 2017 / Report of Contributions The CUORE Fast Cooling System Contribution ID: 1011 Type: Poster Presentation The CUORE Fast Cooling System The Cryogenic Underground Observatory for Rare Events (CUORE) is a ton-scale Neutrino-less Double Beta Decay experiment that uses 998 TeO2 crystal bolometers that need to be operated at a baseline temperature of around 10 mK. The large volume and masses involved require a dedicated precooling system that allows the apparatus to reach a threshold temperature after which the Dilution Unit, a mK-scale refrigerator, can start the final cool-down. CUORE Fast Cooling System (FCS) has been developed, constructed and recently used for the CUORE precooling stage. It mainly consists of a cryostat with heat exchangers that use 3 Gifford-McMahon refrigerators, a He blower, a filtering module and several sensors that allow to monitor and control the system during this very delicate cooldown procedure. The present work will describe the FCS and will summarize the FCS performances during the first full CUORE detector cooldown. Experimental Collaboration Primary author: Prof. PAGLIARONE, Carmine Elvezio (LNGS/INFN & UNICLAM) Presenter: Prof. PAGLIARONE, Carmine Elvezio (LNGS/INFN & UNICLAM) Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 807 EPS-HEP 2017 / Report of Contributions Neutrino physics and nuclear astr … Contribution ID: 1012 Type: Parallel Talk Neutrino physics and nuclear astrophysics: the LUNA MV project at Gran Sasso Thursday, 6 July 2017 11:45 (15 minutes) Nuclear astrophysics is an extremely rich field, correlated with many other research fields like observational neutrino physics, stellar modeling and cosmology. As example, the precise knowledge of reactions producing neutrinos is mandatory to use neutrinos as probes of the stellar interior but at stellar energies the cross sections are usually extremely low, down to the femto-barn level. The LUNA (Laboratory for Underground Nuclear Astrophysics) collaboration has exploited the low-background environment of the underground Gran Sasso Laboratory to perform direct mea- surements at the stellar energies. Among the most relevant LUNA contribution to the neutrino physics we remind: the exclusion of a resonance in the cross section of 3He+3He at solar energies that ruled out a nuclear explanation to the solar neutrino problem and the direct measurement down to 70 keV of the bottleneck reaction of the CNO cycle, 14N+p, that pointed out a cross sec- tion lower by a factor two than expected and halved the predictions of the solar CNO neutrino fluxes. Presently, a new LUNA MV facility based on a 3.5 MV accelerator will be installed in the Hall B at the beginning of 2018: the aim is to study the key processes of helium and carbon burning such as the 12C+α reaction that shapes the outcomes of both Ia and core-collapse supernovae. Contemporary a new effort will be devoted to improve the knowledge of solar reactions: the 14N+p reaction will be the first step of the new experimental program with the aim to extend the mea- surement over a wider energy range. The error budget on 13N and 15O neutrino fluxes is dominated by the uncertainty (~10%)inthe 14N+p cross section: an accurate measurement at LUNA MV will importantly contribute to con- strain the chemical composition of the Sun. The present talk is aimed to summarize all the LUNA results relevant to neutrino astrophysics and to present the scientific program related to the years 2018-2022. Experimental Collaboration LUNA Primary author: Dr ZAVATARELLI, Sandra (INFN - Sezione di Genova) Presenter: Dr ZAVATARELLI, Sandra (INFN - Sezione di Genova) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 808 EPS-HEP 2017 / Report of Contributions THE ROLE OF IMAGES IN THE S … Contribution ID: 1013 Type: Parallel Talk THE ROLE OF IMAGES IN THE STORYTELLING OF THE INVISIBLE Saturday, 8 July 2017 09:30 (15 minutes) As particle physicists are, even those who work on the communication on particle physics are always involved with the traces of something. Images have an increasingly important function in communication through both traditional and new media, and play an even more relevant role in building a good storytelling. Unfortunately - that’s a well-known evidence - particles and forces of nature are not generous in offering images of themselves, and although they determine our universe and even our existence, they are not really familiar objects. The story of particles is so time by time a new challenge: that’s well-known for those who work in the Communications Of- fices of Scientific Institutes devoted to research in this field, which has to deal daily withboththe constraints of institutional communication and the need to communicate an accessible message in a passionate way, in order to reach ever new audiences. Research and experimentation of dif- ferent ways to communicate have led to the birth of conference-show projects, in which artistic performances intertwine with the scientific narrative, like it happens in the public events, recently produced by INFN, “Cosmic Tale” or “What I do not know”. But also art exhibitions that, thanks to a proper scenography realized through videos and interactive multimedia installations, seek to cre- ate realistic environments. The goal is to allow the public to immerse themselves in a metaphorical storytelling of scientific concepts. This is what happens with the installations “Spacetime”, “Higgs Boson” or “Universe Expansion”. Thus, the interweaving of different communication languages, from the scientific dialogue to the use of metaphors, images or cartoons, music and performing arts, can accompany the public to the discovery of some of the most fascinating ideas of the con- temporary physics: from the discovery of gravitational waves to the search for Dark Matter, from Albert Einstein’s General Relativity to the wave-particle duality. Experimental Collaboration Primary authors: SCIANITTI, Francesca (INFN Communications Office); VARASCHIN, Antonella (INFN Communicaions Office) Co-author: NAPOLANO, Vincenzo (INFN Communications Office) Presenter: SCIANITTI, Francesca (INFN Communications Office) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 809 EPS-HEP 2017 / Report of Contributions Multiplicity dependence of the pro … Contribution ID: 1014 Type: Parallel Talk Multiplicity dependence of the production of identified charged hadrons in pp and pPb collisions from CMS Thursday, 6 July 2017 17:15 (15 minutes) New results on transverse momentum spectra of identified charged hadrons in proton-proton col- lisions at sqrt(s) = 13 TeV are presented using CMS detector at the LHC. Charged pions, kaons, and protons in the transverse-momentum range pT = 0.1-1.7 GeV/c and for laboratory rapidities |y| < 1 are identified via their energy loss in the CMS silicon tracker. The pT spectra and integrated yields are compared to lower center-of-mass energy pp, and to similar energy pPb and PbPb results, as well as to Monte Carlo simulations. For all collision systems studied, the average pT increases with particle mass and with the charged- particle multiplicity of the event as expected from theoretical predictions, among others from those based on gluon saturation. The results shows only a slight dependence of the average pTonthe center-of-mass energy, indicating that particle production at LHC energies is strongly correlated with the charged-particle multiplicity rather than with the center-of-mass energy of the collision. The observed dependencies show that at TeV energies the characteristics of particle production in hadronic collisions are constrained mostly by the amount of initial parton energy available in a given collision. Experimental Collaboration CMS Primary author: CMS COLLABORATION Presenter: SIKLÉR, Ferenc (Wigner RCP, Budapest (HU)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 810 EPS-HEP 2017 / Report of Contributions Recent Results on Multi-Particle A … Contribution ID: 1015 Type: Parallel Talk Recent Results on Multi-Particle Azimuthal Correlations in High-Multiplicity pp and pPb Collisions in CMS Friday, 7 July 2017 10:15 (15 minutes) In nucleus-nucleus collisions, the Quark-Gluon Plasma behaves like a perfect fluid and theaz- imuthal anisotropy of the observed particle final-state distributions reflects its properties. This anisotropic flow, arising mainly from initial-state geometry and its fluctuations, highlights thecol- lective behavior of the particles produced in the collision. It is well-described by hydrodynamics and explains the long-range near-side correlations, known as the “ridge”, observed experimen- tally in AA collisions and, more recently, in small systems such as pp or pA collisions. The CMS experiment has studied this correlation in details by extracting the momenta of the Fourier decom- position of azimuthal particle-distribution in the final state (vn, n=2—4). The vn are extracted using di-hadron correlation and multi-particle cumulant methods in both pp and pPb collisions. In this talk, results from CMS on the ridge in small systems are shown and compared with those in PbPb collisions, demonstrating that the collective nature of the ridge is present also in small systems. The correlation between different Fourier coefficients is further investigated using asymmetric cumulant analysis and compared across colliding systems. The latest results on vn correlations in pp at 13 TeV and pPb at 8.16 TeV collisions are also discussed. All these results give us a better understanding of collective effects from small to large colliding systems and provide more insights on the nature of the ridge in pp and pPb collisions. Experimental Collaboration CMS Primary author: CMS COLLABORATION Presenter: BERNARDES, Cesar (UNESP - Universidade Estadual Paulista (BR)) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 811 EPS-HEP 2017 / Report of Contributions Detecting quantum gravity in the sky Contribution ID: 1017 Type: Parallel Talk Detecting quantum gravity in the sky Friday, 7 July 2017 10:15 (15 minutes) We show that the dimension of spacetime becomes complex-valued when its short-scale geometry is invariant under a discrete scaling symmetry. This characteristic can arise either in quantum gravities based on combinatorial or multifractal structures or as the partial breaking of continuous dilation symmetry in any conformal-invariant theory. With its infinite scale hierarchy, discrete scale invariance overlaps with the traditional separation between ultraviolet and infrared physics and it can leave an observable imprint in the cosmic microwave background. We discuss such imprint in the form of log oscillations and sharp features in the primordial power spectrum. Experimental Collaboration Primary author: Dr CALCAGNI, Gianluca (IEM-CSIC) Presenter: Dr CALCAGNI, Gianluca (IEM-CSIC) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 812 EPS-HEP 2017 / Report of Contributions Go to the astroparticle physics sch … Contribution ID: 1018 Type: Parallel Talk Go to the astroparticle physics school with the Toledo Metro Station Totem-Telescope for cosmic rays Saturday, 8 July 2017 09:15 (15 minutes) Among the scientific divulgation activities of National Institute of Nuclear Physics of Naples (INFN- NA), the installation of the underground cosmic radiation telescope at the Toledo Metro Station in Naples in 2014 had a major impact on territory. The detector,consisting of 10 xy scintillator planes, read by SiPM, was developed by the National Laboratory of the Gran Sasso (LNGS), and in- stalled together INFN-NA researchers and the Department of Physics of the Federico II University (DIPFIS-UNINA), in collaboration with Azienda Napoletana Mobilità (ANM). It allows observing the cosmic particles that reach 40 meters of depth in the Station through the LEDs that indicate the trajectory of the particles. At the end of September 2016, as part of Notte Europea dei Ricerca- tori, the telescope was upgraded with a multimedia Totem, provides videos on cosmic ray physics, as well as on the activities of INFN and other project partners. The initiative sees engaged INFN- NA, LNGS, DIPFIS-UNINA, ANM and Rotary International. An important aspect is the real-time analysis of Totem’s telescope data, which allows the public to show the tracks of the muons. The accumulated data, transmitted to the Web site of INFN-NA, are accessible to the students foredu- cational purposes. A competition was launched at High Secondary Schools, sponsored by Ufficio Scolastico Regionale (USR), with the aim of engaging teachers and students in astroparticle physics projects. The students, preparing their own elaborates as posters,computer presentations,artefacts and didactic experiments, will expose to the public during the 4 days of Futuro Remoto (May 25- 28, 2017 http://www.cittadellascienza.it/futuroremoto/2017). The Totem and its connection tothe Toledo telescope open new perspectives for communication and dissemination of scientific culture especially for the students through the technique of learning by doing, realizing and presenting the work created, also through the Alternanza Scuola-Lavoro. Experimental Collaboration Primary author: ARAMO, Carla (INFN - Napoli) Co-authors: Dr AMBROSIO, Michelangelo (INFN - Napoli); Dr CANDELA, Attanasio (LNGS-INFN); Dr MASTROSERIO, Paolo (INFN-Napoli) Presenter: ARAMO, Carla (INFN - Napoli) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 813 EPS-HEP 2017 / Report of Contributions PHYSICS ON SOCIAL MEDIA: IM … Contribution ID: 1020 Type: Parallel Talk PHYSICS ON SOCIAL MEDIA: IMPACT AND INTERACTION TO DEAL WITH FAST COMMUNICATION Saturday, 8 July 2017 12:00 (15 minutes) Traditional communication channels are now co-living with new ones, such as social media. These are channels through which communication is fast, impactful and interactive. It’s commonly thought that they are mainly used by young people, but now there is an additional increasingly high demand of reliable and easy to understand information on social media by adults. Scientific research results need hence to be easy to find on these channels by those that are familiar with them but also by those publics that are starting now to approach these channels. These are the reasons why, in order to provide accurate and reliable information, scientific research institutes need to be able to adopt a communication strategy appropriate for social media. These channels require indeed an approach that is different from the ‘traditional communication’ one, they need to provide information quickly, interactively and they can never be silent, this means that even when scientific institutes are not able to release breaking news they need to provide users of information that is not yet very well known. At INFN, these three requirements have led to the creation of new communication strategies that are based on two concepts: interaction and impact. INFN has created a series of weekly appointments that through an images-storytelling unveil the work that is daily done at the institute. Moreover, it has planned a series of interactive interviews, Facebook lives, that allow the public to directly ask questions to the first actors in the research field. To reach an increasingly higher public and to meet the new public demands scientific research institute have hence to be strongly present on these new communication channels, social media. Experimental Collaboration Primary author: MAZZOTTA, Francesca Presenter: MAZZOTTA, Francesca Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 814 EPS-HEP 2017 / Report of Contributions Heavy Flavor and Charmonia Prod … Contribution ID: 1021 Type: Parallel Talk Heavy Flavor and Charmonia Production in the PHENIX experiment at RHIC Thursday, 6 July 2017 11:45 (15 minutes) Particles carrying heavy flavor are important probes of the properties of the Quark-Gluon Plasma (QGP) since they are produced in hard scattering during the earliest stages of nuclear collisions. 3 In recent years, the PHENIX√ detector has collected data on p+p, p+Al, p+Au, He +Au, Cu+Au and Au+Au collisions at sNN =200GeV with the addition of silicon vertex detectors (VTX and FVTX). Analyses using the VTX for central rapidity (|y|<0.3) studies, and the FVTX for forward rapidities (1.2<|y|<2.2) have produced results on charm and bottom open heavy flavor production, as well as ψ’ to J/ψ ratios. In this talk we will present recent results from PHENIX on open heavy flavor and charmonia in a variety of systems to extract information on cold nuclear matter and QGP properties at RHIC. Experimental Collaboration PHENIX Collaboration Primary author: ROSATI, Marzia (Iowa State University) Presenter: ROSATI, Marzia (Iowa State University) Session Classification: Heavy ion physics Track Classification: Heavy Ion Physics October 6, 2021 Page 815 EPS-HEP 2017 / Report of Contributions Impact of heavy sterile neutrinos o … Contribution ID: 1022 Type: Parallel Talk Impact of heavy sterile neutrinos on the triple Higgs coupling Saturday, 8 July 2017 11:45 (15 minutes) The discovery of neutrino oscillations calls for an extension of the Standard Model that wouldgen- erate neutrino masses and mixing. One of the simplest possibilities is the addition of fermionic gauge singlets or sterile neutrinos. TeV-scale realisations of this idea lead to a very rich phe- nomenology due to the mixing of the new fermions with the left-handed neutrinos of the SM and the large Higgs-neutrino coupling. In a first study, we showed in a simplified 3+1 model with Dirac neutrinos that loops with a heavy neutrino can induce large corrections, up to 30% of the SM one-loop value. These effects are potentially larger in low-scale seesaw models, as weshowed by considering the inverse seesaw. I will discuss how fermionic singlets induce large corrections to the triple Higgs coupling and how they can be used to probe neutrino mass models in a regime otherwise difficult to access. Experimental Collaboration Primary authors: Dr WEILAND, Cedric (IPPP Durham); Dr BAGLIO, Julien (University of Tübin- gen) Presenter: Dr WEILAND, Cedric (IPPP Durham) Session Classification: Neutrino physics Track Classification: Neutrino Physics October 6, 2021 Page 816 EPS-HEP 2017 / Report of Contributions Measurement of shower developm … Contribution ID: 1023 Type: Parallel Talk Measurement of shower development and its Molière radius with a four-plane LumiCal test set-up Friday, 7 July 2017 12:42 (16 minutes) A prototype of a luminometer, designed for a future e+e− collider detector, and consisting at present of a four-plane module, was tested in the CERN PS accelerator T9 beam. The objective of this beam test was to demonstrate a multi-plane operation, to study the development of the electromagnetic shower and to compare it with MC simulations. In addition, the effective Molière radius of this configuration is extracted. Experimental Collaboration FCAL Presenter: LEVY, Itamar (Tel Aviv University (IL)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 817 EPS-HEP 2017 / Report of Contributions Naturally small Dirac neutrino ma … Contribution ID: 1025 Type: Poster Presentation Naturally small Dirac neutrino masses with intermediate SU(2)_L multiplets If neutrinos are Dirac fermions, certain new physics beyond the standard model should exist to account for the smallness of neutrino mass. With two additional scalars and a heavy intermediate fermion, we systematically study the general mechanism that can natrally generate the tiny Dirac neutrino mass at tree and in one-loop level. For tree level models, we focus on natural ones, in which the additional scalars develop small vacuum expectation values without fine-tuning. For D one-loop level models, we explore those having dark matter candidates under Z2 symmetry. In both cases, we concentrate on SU(2)L multiplet scalars no larger than quintuplet, and derive the complete sets of viable models. Experimental Collaboration Primary author: WANG, Weijian Presenter: WANG, Weijian Session Classification: Poster session Track Classification: Neutrino Physics October 6, 2021 Page 818 EPS-HEP 2017 / Report of Contributions The impact of Zpt data on PDF det… Contribution ID: 1026 Type: Parallel Talk The impact of Zpt data on PDF determinations Friday, 7 July 2017 18:10 (15 minutes) Recently released ATLAS and CMS measurements of the Z transverse momentum distribution in vector boson hadroproduction have the potential to significantly constrain the gluon and light quark PDFs in a range of Bjorken-x that is relevant for Higgs production. In this talk I will review the most recent data and discuss their inclusion in a PDF determination based on the NNPDF methodology. In particular, I will discuss their impact on PDF uncertainties and predictions for physical cross-sections relevant to precision Higgs phenomenology. Experimental Collaboration Primary author: Dr GUFFANTI, Alberto (Università degli Studi di Torino & INFN Torino) Presenter: Dr GUFFANTI, Alberto (Università degli Studi di Torino & INFN Torino) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 819 EPS-HEP 2017 / Report of Contributions Performance of Monte Carlo Event … Contribution ID: 1027 Type: Poster Presentation Performance of Monte Carlo Event Generators for the Production of Boson and Multi-Boson States ATLAS Analysis The Monte√ Carlo setups used by ATLAS to model boson+jets and multi-boson processes at s = 13 TeV in pp collisions are described. Comparisons between data and several events generators are provided for key kinematic distributions. Issues associated the evaluation of systematic uncertainties are also discussed. Experimental Collaboration ATLAS Collaboration Presenters: Mr GIULI, Francesco (ATLAS Collaboration); GIULI, Francesco (University of Oxford (GB)) Session Classification: Poster session Track Classification: QCD and Hadronic Physics October 6, 2021 Page 820 EPS-HEP 2017 / Report of Contributions Production of cosmic-ray antinucl … Contribution ID: 1029 Type: Poster Presentation Production of cosmic-ray antinuclei in the Galaxy and background for dark matter searches Antimatter nuclei in cosmic rays (CRs) represent a promising tool for the indirect search ofdark- matter particles in the Galaxy. At this conference, we report updated calculations for the astrophysical production of CR antipro- ton, antideuteron, and antihelium nuclei using updated cross-section formulae and new astrophys- ical constraints inferred from the recent AMS-02 data on CR protons and nuclei. Using these constraints, we also compute upper limits for the flux of CR antinuclei produced and diffusively- shock-accelerate inside Galactic sources. Experimental Collaboration Primary author: TOMASSETTI, Nicola (Perugia University & INFN- Perugia) Presenters: TOMASSETTI, Nicola (Perugia University & INFN- Perugia); OLIVA, Alberto (Centro de Investigaciones Energéti cas Medioambientales y Tecno) Session Classification: Poster session Track Classification: Astroparticle Physics October 6, 2021 Page 821 EPS-HEP 2017 / Report of Contributions Yukawas of light stringy states Contribution ID: 1030 Type: Parallel Talk Yukawas of light stringy states Saturday, 8 July 2017 12:30 (20 minutes) We investigate light massive string states that appear at brane intersections. They replicate the massless spectrum in a richer fashion and may be parametrically lighter than standard Regge excitations. We compute tri-linear Yukawa couplings of such open-string states to massless ones and to one another. Due to ambiguities in the normalisation of the vertex operators, that involve twist fields, we proceed via factorization of appropriate scattering amplitudes. Some peculiar features are observed that may lead to interesting signatures at colliders in the future. Experimental Collaboration Primary author: ANASTASOPOULOS, Pascal (Unknown) Presenter: ANASTASOPOULOS, Pascal (Unknown) Session Classification: QFT and string theory Track Classification: Quantum Field and String Theory October 6, 2021 Page 822 EPS-HEP 2017 / Report of Contributions Stochastic GW searches and Cosm … Contribution ID: 1033 Type: Parallel Talk Stochastic GW searches and Cosmology with GWs Friday, 7 July 2017 17:30 (15 minutes) A stochastic background of gravitational waves can be described as a superposition of several uncorrelated contributions. It can be of both cosmological and astrophysical origin. In the first case, it can constitute potentially a unique probe of the primordial universe. In the second, it can give precious information on stellar populations. After discussing how this kind of signal can be detected and what information can be extracted from its study, I review the past and ongoing efforts to find it, the current upper limits and the future perspective forits detection. Experimental Collaboration Primary author: CELLA, Giancarlo (INFN - National Institute for Nuclear Physics) Presenter: CELLA, Giancarlo (INFN - National Institute for Nuclear Physics) Session Classification: Cosmology, dark energy, gravitational waves Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 823 EPS-HEP 2017 / Report of Contributions Indirect Detection Experiments Contribution ID: 1034 Type: Parallel Talk Indirect Detection Experiments Friday, 7 July 2017 09:00 (30 minutes) We live in a golden age for astro-particle physics, with a significant number of experiments actively monitoring high-energy Universe. Many of these probes provide excellent tests of particle physics models of dark matter particles. In particular, experiments such as Fermi -LAT, AMS-02, Ice Cube, … are significantly cutting into the parameter space of one of the most popular candidates, the WIMPs. In this talk I will describe some of the strategies and methods used to search for dark matter with astrophysical data. Special attention will be given to the latest indications of an unaccounted gamma-ray excess at few GeV in the Fermi-LAT data in the region around the Galactic Centre, which steered lots of attention as it was shown to be consistent with putative signals ofWIMP dark matter particles and complementary constraints provided by other experiments. FinallyI will discuss projections of the expected sensitivities with upcoming experiments and continued data taking with current ones. Experimental Collaboration Primary author: Dr ZAHARIJAS, Gabrijela (University of Nova Gorica) Presenter: Dr ZAHARIJAS, Gabrijela (University of Nova Gorica) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 824 EPS-HEP 2017 / Report of Contributions WIMP Direct Detection Experiments Contribution ID: 1035 Type: Parallel Talk WIMP Direct Detection Experiments Thursday, 6 July 2017 09:00 (30 minutes) Weakly Interacting Massive Particles (WIMPs) are one of the best motivated elementary particle candidates for dark matter. WIMPs could be detected via their scattering off matter, in so-called direct detection experiments. During the past decade, the sensitivity of such experiments has improved by three to four orders of magnitude, but solid evidence for their existence is yet to come. In this talk, I will review the recent progress in direct dark matter detection experiments and discuss future prospects. Experimental Collaboration Primary author: LIU, Jianglai (Shanghai Jiao Tong University) Presenter: LIU, Jianglai (Shanghai Jiao Tong University) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 825 EPS-HEP 2017 / Report of Contributions Axion as a non-WIMP dark matter … Contribution ID: 1036 Type: Parallel Talk Axion as a non-WIMP dark matter candidate Thursday, 6 July 2017 12:00 (30 minutes) The axion arises as a pseudo Nambu-Goldstone boson from the spontaneous breaking ofahypo- thetical global Peccei-Quinn symmetry introduced to provide a solution to the strong CPproblem of quantum chromodynamics. Due to the weakness of the coupling with ordinary matters, the axion is regarded as a viable candidate of dark matter of the universe. However, the estimation of the axion dark matter abundance is not so straightforward if we follow the evolution of theaxion field in the context of inflationary cosmology. As a result, the prediction for the mass ofaxiondark matter depends strongly on the early history of the universe according to the detailed construction of underlying particle physics models. In this contribution, after a quick overview of non-WIMP dark matter candidates, we review recent developments of the theoretical estimation of the axion dark matter abundance and discuss their implications for present and future experimental tests. Experimental Collaboration Primary author: SAIKAWA, Kenichi (Tokyo Institute of Technology) Presenter: SAIKAWA, Kenichi (Tokyo Institute of Technology) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 826 EPS-HEP 2017 / Report of Contributions Axion experimental review Contribution ID: 1037 Type: Parallel Talk Axion experimental review Friday, 7 July 2017 12:15 (30 minutes) Proposed more than 30 years ago, axions are still the most compelling solution to the strong CP problem of the Standard Model. More recently their physics case has been considerably sharpened, as well as that of similar axion-like particles (ALPs) that generically emerge in diverse high-energy extensions of the Standard Model, notably string theory. Both axion and ALPs constitute very appealing candidates to the dark matter of the Universe, and they are also invoked as a solution ofa number of anomalous astrophysical observations. In addition, particular realizations of these type of models appear linked with inflation, dark radiation and even dark energy. These developments, together with the fact that experimental techniques have recently achieved sensitivity to relevant regions of ALP parameter space, are increasing the interest in the search for these particles. I will review the status of the experimental landscape, as well as near term prospect from ongoing experiments, future projects and new detection ideas in the search for laboratory, dark matter and solar axions and ALPs. Experimental Collaboration Primary author: GARCIA IRASTORZA, Igor (Universidad de Zaragoza (ES)) Presenter: GARCIA IRASTORZA, Igor (Universidad de Zaragoza (ES)) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 827 EPS-HEP 2017 / Report of Contributions Measurements of the Higgs Boson … Contribution ID: 1039 Type: Poster Presentation Measurements of the Higgs Boson fiducial and differential cross sections in the 4l decay channel at 13 TeV with the ATLAS detector A measurement of the inclusive and differential fiducial cross section of Higgs-boson production in the four lepton (electrons or muons) final state is presented. The data sample, collected by the ATLAS experiment in2015 and 2016, corresponds to an integrated luminosity of 36.1 fb−1 of proton-proton collisions produced at the Large Hadron Collider at a centre-of-mass energy of 13 TeV. The inclusive fiducial cross section has been measured to beagree- ment with the Standard Model prediction. Moreover, several differential fiducial cross sections are measured for observables sensitive to the Higgs-boson production and decay. Good agreement is found between data and Standard Model predictions. Experimental Collaboration ATLAS Primary author: ROZEN, Yoram (Israel Institute of Technology (IL)) Presenter: SALVUCCI, Antonio (The Hong Kong Universities Cluster (HK)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 828 EPS-HEP 2017 / Report of Contributions Algorithmic improvements and ca … Contribution ID: 1040 Type: Parallel Talk Algorithmic improvements and calibration measurements for flavour tagging at the ATLAS experiment Thursday, 6 July 2017 16:45 (15 minutes) The identification of jets containing b-hadrons is key to many physics analyses at the LHC,includ- ing measurements involving Higgs bosons or top quarks, and searches for physics beyond the Standard Model. In this contribution, the most recent enhancements in the capability of ATLAS to separate b-jets from jets stemming from lighter quarks, and the latest measurements to calibrate the b-tagging efficiency and light/charm mistag rates, willbe presented. Experimental Collaboration ATLAS Primary author: BATTAGLIA, Marco (University of California,Santa Cruz (US)) Presenter: BATTAGLIA, Marco (University of California,Santa Cruz (US)) Session Classification: Detectors and data handling Track Classification: Detector R&D and Data Handling October 6, 2021 Page 829 EPS-HEP 2017 / Report of Contributions Explanation of the 17 MeV Atomki … Contribution ID: 1041 Type: Poster Presentation Explanation of the 17 MeV Atomki Anomaly in a U(1)’-Extended 2-Higgs Doublet Model Motivated by an anomaly observed in the decay of an excited state of Beryllium by the Atomki collaboration, we study an extension of the Standard Model with a gauged U(1)′ symmetry in presence of a 2-Higgs Doublet Model structure of the Higgs sector. We show that this scenario complies with a variety of experimental results and is able to explain the potential presence of a resonant spin-1 gauge boson, Z′, with a mass of 17 MeV in the Atomki experimental data, for appropriate choices of U(1)′ charges and Yukawa interactions. Experimental Collaboration Primary author: DELLE ROSE, Luigi (Rutherford Appleton Lab and University of Southamp- ton) Presenter: DELLE ROSE, Luigi (Rutherford Appleton Lab and University of Southampton) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 830 EPS-HEP 2017 / Report of Contributions Charm Physics: Theory status and … Contribution ID: 1042 Type: Parallel Talk Charm Physics: Theory status and window to New Physics Friday, 7 July 2017 14:30 (30 minutes) Motivated by the possible signals of lepton number violation in B physics, known as RD(*) and RK, RK∗ puzzles, we investigate whether charm physics might offer a window to New Physics, too. Relying on the existing lattice QCD and experimental results on charm leptonic and semileptonic weak decays, one can question presence of NP in the charge current transitions. One can constrain the NP effects in differential decay width distributions, forward-backward asym- metry in D → Klν. The NP might affect flavour changing neutral current transitions as charm meson oscillations and rare charm decays. We present constraints on NP parameters for a few representative models of NP, as new vector gauge bosons, leptoquarks and THDM. Possible tests of lepton flavour universalities are discussed. The effects of Dark Matter particles in charm mesons are investigated too. Experimental Collaboration Primary author: FAJFER, Svjetlana (Univ. of Ljubljana and Inst. J. Stefan) Presenter: FAJFER, Svjetlana (Univ. of Ljubljana and Inst. J. Stefan) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 831 EPS-HEP 2017 / Report of Contributions Discussion panel on diversity and … Contribution ID: 1043 Type: Parallel Talk Discussion panel on diversity and inclusion Friday, 7 July 2017 18:00 (30 minutes) Given the quite limited number of permanent positions in HEP, is it really possible to be gender/diversity- inclusive? And what about people with a disability? Experimental Collaboration Primary author: SERRANO, Justine (CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France) Co-authors: Ms KALTENHÄUSER , Kristin (IT University Copenhagen); STEINKAMP, Olaf (Uni- versitaet Zuerich (CH)); GRANIER DE CASSAGNAC, Raphael (Centre National de la Recherche Scien- tifique (FR)) Presenters: SERRANO, Justine (CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France); Ms KALTENHÄUSER , Kristin (IT University Copenhagen); STEINKAMP, Olaf (Universitaet Zuerich (CH)); GRANIER DE CASSAGNAC, Raphael (Centre National de la Recherche Scientifique (FR)) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 832 EPS-HEP 2017 / Report of Contributions Discussion panel on science comm … Contribution ID: 1044 Type: Parallel Talk Discussion panel on science communication in HEP Saturday, 8 July 2017 12:30 (30 minutes) Communicating HEP results to the general public often relies upon a simplification of the physics behind it. In the long term can be this an issue e.g. for resources given by the funding agencies. Experimental Collaboration Primary author: Ms STONE, Lucy (STFC) Co-authors: SCIANITTI, Francesca (INFN-National Institute for Nuclear Physics, Italy); ORGAN- TINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)); CHALMERS, Matthew (CERN) Presenters: SCIANITTI, Francesca (INFN-National Institute for Nuclear Physics, Italy); ORGAN- TINI, Giovanni (Sapienza Universita e INFN, Roma I (IT)); Ms STONE, Lucy (STFC); CHALMERS, Matthew (CERN) Session Classification: Outreach, education, diversity Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 833 EPS-HEP 2017 / Report of Contributions Getting to grips with hadronic unc … Contribution ID: 1045 Type: Parallel Talk Getting to grips with hadronic uncertainties in kaon physics and in (g-2)_mu Saturday, 8 July 2017 09:00 (30 minutes) Being able to predict a small set of hadronic observables precisely and more importantly reliably in lattice QCD has been a big achievement (see Flavour Lattice Averaging Group review). Decreas- ing the precision below the %-level and increasing the set of numbers for which predictions can be made is challeng- ing but exciting. This talk will highlight recent conceptual progress on hadronic contributions tothe muon g-2 and on long distance effects for kaons (mixing and rare decays). Experimental Collaboration Primary author: JUETTNER, Andreas Presenters: JUETTNER, Andreas; JUTTNER, Andreas (University of Southampton (GB)) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 834 EPS-HEP 2017 / Report of Contributions Adiabaticity and gravity theory in … Contribution ID: 1046 Type: Parallel Talk Adiabaticity and gravity theory independent conservation laws for cosmological perturbations Friday, 7 July 2017 09:30 (15 minutes) We carefully study the implications of adiabaticity for the behavior of cosmological perturbations. There are essentially three similar but different definitions of non-adiabaticity: one is appropriate for a thermodynamic fluid δPnad, another is for a general matter field δPc,nad, and the last one is valid only on superhorizon scales. 2 2 The first two definitions coincide if cs = cw where cs is the propagation speed of the perturbation, while 2 ˙ cw = P /ρ ˙. Assuming the adiabaticity in the general sense, δPc,nad = 0, we derive a relation between the lapse function in the comoving sli\-cing Ac and δPnad valid for arbitrary matter field in any theory of gravity, by using only momentum conservation. The relation implies that as long as cs ≠ cw, the uniform density, comoving and the proper-time slicings coincide approximately for any gravity theory and for any matter field if δPnad = 0 approximately. In the case of general relativity this gives the equivalence between the comoving curvature perturbation Rc and the uniform density curvature perturbation ζ on superhorizon scales, and their conservation. This is realized on superhorizon scales in standard slow-roll inflation. We then consider an example in which cw = cs, where δPnad = δPc,nad = 0 exactly, but the equivalence between Rc and ζ no longer holds. Namely we consider the so-called ultra slow-roll inflation. In this case both Rc and ζ are not conserved. In particular, as for ζ, we find that it is crucial to take into account the next-to-leading order term in ζ’s spatial gradient expansion to show its non-conservation, even on superhorizon scales. This is an example of the fact that adiabaticity (in the thermodynamic sense) is not alwaysenough to ensure the conservation of Rc or ζ. Experimental Collaboration Primary author: ROMANO, Antonio Enea (Universidad de Antioquia (CO)) Presenter: ROMANO, Antonio Enea (Universidad de Antioquia (CO)) Session Classification: Cosmology, dark energy, gravitational waves October 6, 2021 Page 835 EPS-HEP 2017 / Report of Contributions Adiabaticity and gravity theory in … Track Classification: Cosmology, Dark Energy, Gravitational Waves October 6, 2021 Page 836 EPS-HEP 2017 / Report of Contributions Update on the hadronic vacuum p … Contribution ID: 1047 Type: Parallel Talk Update on the hadronic vacuum polarisation contributions to muon g-2 and alpha(m_Z^2) Saturday, 8 July 2017 10:30 (15 minutes) Using new hadronic cross section data for more than 10 exclusive channels mainly from Babar in the energy range up to 2 GeV and also from VEPP-2000, the hadronic contributions to the muon magnetic anomaly and to the running of the electromagnetic coupling constant at the Z-boson mass are updated. The new data complement the previously available information on exclusive channels allowing to alleviate the need for estimation of missing channels based on isospin sym- metry. The updated muon g-2 is 20% more precise than our previous evaluation in 2010andit deviates from the direct measurement by about 3.6 standard deviations. Experimental Collaboration Primary author: ZHANG, Zhiqing Philippe (LAL, Orsay (FR)) Presenter: ZHANG, Zhiqing Philippe (LAL, Orsay (FR)) Session Classification: Flavour and symmetries Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 837 EPS-HEP 2017 / Report of Contributions SUSY global fits and recast of ATL … Contribution ID: 1048 Type: Poster Presentation SUSY global fits and recast of ATLAS and CMS 13 TeV searches We show latest results of SUSY fits from the MasterCode collaboration, and the status of therecast of ATLAS and CMS 13 TeV SUSY searches being incorporated in coming analyses. Experimental Collaboration MasterCode Primary author: SUÁREZ FERNÁNDEZ, Isabel Presenter: SUÁREZ FERNÁNDEZ, Isabel Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 838 EPS-HEP 2017 / Report of Contributions D-meson and charmed-baryon me … Contribution ID: 1053 Type: Parallel Talk D-meson and charmed-baryon measurements in pp and p–Pb collisions with ALICE at the LHC Thursday, 6 July 2017 11:45 (15 minutes) Measurements of charmed-hadron production in pp collisions are important to test predictions from perturbative QCD and provide an essential baseline for the studies in A–A collisions. Mea- surements in p–A collisions also allow studies of possible modifications of the charmed-hadron yields due to cold nuclear matter effects. The study of charm production as a function ofthemul- tiplicity of charged particles can give insight into multi-parton interactions and into the interplay between hard and soft processes. The charmed baryon-to-meson ratio is sensitive to hadronisation mechanisms in pp and p–A collisions and it will offer a unique probe of the role of coalescence and predicted presence of diquark states in A–A collisions. ALICE measures hadrons containing charm quarks in wide momentum and rapidity ranges in pp and p–A collisions. We will present the recent results for D0, D+, D∗+ and D+s mesons recon- structed via their hadronic decays at mid-rapidity in pp collisions at s√ = 5.02, 7, 8 and 13 TeV and in p–Pb collisions at sNN‾‾‾‾√=5.02 TeV, collected with the ALICE detector during the LHC Run-1 and Run-2. In particular, we will show the production cross section, nuclear modification factor, multiplicity-dependent studies and the charm production measurement down to pT = 0. We will report the first measurement of the pT-differential cross section of the Λ+c baryon inpp collisions at s√=7 TeV, and in p–Pb collisions at sNN‾‾‾‾√=5.02 TeV through the full reconstruc- tion of two of its hadronic decay channels and the partial reconstruction of one of its semileptonic decay channels. We will also show the pT-differential cross section times branching ratio ofthe Ξ0c baryon measured in the decay channel Ξ0c→e+Ξ−νe in pp collisions at s√=7 TeV. The results will be compared with theoretical model predictions. Experimental Collaboration Presenter: DE CARO, Annalisa (Universita e INFN, Salerno (IT)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 839 EPS-HEP 2017 / Report of Contributions Updated LHCb measurements on p … Contribution ID: 1054 Type: Parallel Talk Updated LHCb measurements on pentaquark and tetraquark states Saturday, 8 July 2017 12:15 (15 minutes) After the unambiguous confirmation of the resonant behaviour of the Zc(4430) charmonium-like state and the observation of two pentaquark states, it is a main goal for the heavy flavour experi- ments to complete the picture with searches for the many partners the quark model predicts. We report on several studies of b-hadron decay modes potentially involving exotic intermediate states, including new results from studies of three-body final states involving two open-charm particles, the first results to be obtained in this class of decays at the LHC. Prospects for a morerobust determination of the pentaquark final states are also discussed. Experimental Collaboration Presenter: STEINKAMP, Olaf (Universitaet Zuerich (CH)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 840 EPS-HEP 2017 / Report of Contributions Spectroscopy with heavy flavours … Contribution ID: 1055 Type: Parallel Talk Spectroscopy with heavy flavours at LHCb Thursday, 6 July 2017 12:30 (15 minutes) We report on the first observation of excited hadronic states in both the charm and beauty sector with special emphasis on the observation of five excited Omega_c states. Similar techniques are used to analyse LHCb data for short-lived intermediate bound-states formed during the multi-body decay of b-hadrons. Experimental Collaboration Presenter: SPRADLIN, Patrick (University of Glasgow (GB)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 841 EPS-HEP 2017 / Report of Contributions Progress in higher-order QCD calc … Contribution ID: 1056 Type: Parallel Talk Progress in higher-order QCD calculations Friday, 7 July 2017 09:00 (30 minutes) I will review recent progress in the calculation of higher-order QCD corrections and their impact for precision measurements and new physics searches at the LHC. Experimental Collaboration Presenter: ZANDERIGHI, Giulia (CERN) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 842 EPS-HEP 2017 / Report of Contributions COMPASS Measurements of Asym … Contribution ID: 1057 Type: Parallel Talk COMPASS Measurements of Asymmetry Amplitudes in the Drell-Yan Process Observed from Scattering Pions off a Transversely Polarized Proton Target Friday, 7 July 2017 15:15 (15 minutes) In 2015 the COMPASS collaboration at CERN studied the Drell-Yan process with a 190 GeV/c π− beam on a transversely polarized ammonia target. From single-spin asymmetries COMPASS was able to determine amplitudes related to the proton Sivers, transversity and pretzelosity trans- verse momentum dependent (TMD) distributions. The most notable of these TMDs is the Sivers function which has semi-universality and is predicted to change sign between the Drell-Yan and semi-inclusive deep inelastic scattering (SIDIS) processes. COMPASS has previously measured a non-zero Sivers amplitude from SIDIS and therefore COMPASS offers a unique opportunity, with a similar experimental setup and kinematic domain, to definitely conclude on the sign change between the Drell-Yan and SIDIS processes. The data analysis and results of the 2015 Drell-Yan COMPASS data taking will be presented in this talk. Experimental Collaboration Presenter: Mr HEITZ, Robert (University of Illinois) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 843 EPS-HEP 2017 / Report of Contributions Measurement of the leading hadro … Contribution ID: 1058 Type: Parallel Talk Measurement of the leading hadronic contribution to the muon g-2 via space-like data Friday, 7 July 2017 15:45 (15 minutes) The precision measurement of the anomalous magnetic moment of the muon presently exhibits a 3.5σ discrepancy with the Standard Model (SM) prediction. In the next few years this measure- ment will reach an even higher precision at Fermilab and J-PARC. While the QED and electroweak contributions to the muon g-2 can be determined very precisely, the leading hadronic (HLO) correction is affected by a large uncertainty which domi- nates the error of the SM prediction. We propose a novel approach to determine the HLO contribution to the muon g-2 based on the measurement of the effective electromagnetic coupling in the space-like region at low-momentum transfer. We will discuss the possibility of performing this measurement at CERN, by means of a very precise determination of the muon-electron elastic dif- ferential cross-section, exploiting the scattering of 150 GeV muons (currently available at CERN’s North area) on atomic electrons of a low-Z target. We will describe the experimental challenges posed by this measurement and by a detector able to keep the systematic effects at the required level of 10 ppm. This measurement will provide an independent determination of the HLO contribution tothemuon g-2 competitive with the time-like dispersive approach, thus consolidating the SM prediction. It will therefore allow a firmer interpretation of the measurements of the future muon g-2 experi- ments at Fermilab and J-PARC. Experimental Collaboration Presenters: ABBIENDI, Giovanni (Universita e INFN, Bologna (IT)); ABBIENDI, Giovanni; ABBI- ENDI, Giovanni (Universita e INFN (IT)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 844 EPS-HEP 2017 / Report of Contributions Charm and beauty production at H … Contribution ID: 1060 Type: Parallel Talk Charm and beauty production at HERA (H1) Saturday, 8 July 2017 11:30 (15 minutes) Measurements of open charm production are presented in diffractive deep inelastic scattering (5 Experimental Collaboration Presenter: SCHMITT, Stefan (Deutsches Elektronen-Synchrotron (DE)) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 845 EPS-HEP 2017 / Report of Contributions Top-bottom interference effects in… Contribution ID: 1062 Type: Parallel Talk Top-bottom interference effects in Higgs plus jet production at the LHC Friday, 7 July 2017 14:30 (15 minutes) The study of Higgs boson properties form an important part of the LHC program. These studies are not only important for a better understanding of electroweak symmetry breaking mechanism but also for BSM searches. For example, most recently a strategy has been proposed to use LHC measurements of the Higgs transverse momentum distribution to constrain the Yukawa couplings of light-generation quarks to the Higgs boson. In this talk I will present the calculation of NLO QCD corrections of the top-bottom interference contribution to Higgs plus jet production atthe LHC. The calculation involved computing two-loop Feynman integrals expanded in a small bottom mass, which we performed with the differential equation method and that I will elaborate upon.I will also show our results for the NLO top-bottom interference contribution to the Higgs transverse momentum distribution Presenter: WEVER, Chris (Karlsruhe Institute of Technology) Session Classification: QCD and hadronic physics Track Classification: QCD and Hadronic Physics October 6, 2021 Page 846 EPS-HEP 2017 / Report of Contributions Background estimation techniques … Contribution ID: 1063 Type: Poster Presentation Background estimation techniques in searches for heavy resonances at CMS Many Beyond Standard Model theories foresee the existence of heavy resonances (>1 TeV) decaying in final states that include a high-energetic, boosted jet and charged leptons or neutrinos. In these very peculiar conditions, Monte Carlo predictions are not reliable enough to reproduce accurately the expected Standard Model background. A data-Monte Carlo hybrid approach (alpha method) has been successfully adopted since Run1 in heavy-Higgs searches performed by CMS collaboration. By taking advantage of data in signal-free control regions, determined exploiting the boosted jet substructure, predictions are extracted in signal region. The alpha method and jet substructure techniques are described in detail, along with some recent results obtained with 2016 data collected by CMS detector. Experimental Collaboration CMS Primary author: BENATO, Lisa (Universita e INFN, Padova (IT)) Presenter: BENATO, Lisa (Universita e INFN, Padova (IT)) Session Classification: Poster session Track Classification: Higgs and New Physics October 6, 2021 Page 847 EPS-HEP 2017 / Report of Contributions Search for the B-meson decay to f … Contribution ID: 1066 Type: Poster Presentation Search for the B-meson decay to four baryons B → ppp¯ p¯ at BaBar B mesons are the lightest mesons which can decay to various final states containing different baryons. Up to now, the discrepancy between the inclusive branching fraction of all B meson decay modes with at least a couple of baryons in the final state, measured by ARGUS to be (6.8+−0.6)% , and the sum of exclusive baryonic channels, averaged on neutral and positive B mesons at less than 1%, represents an open issue. The measurement and comparison of exclusive branching fractions of baryonic B decays as well as studies on the dynamic of the decay, may allow better understanding of baryon production in B decays and, more generally, hadron fragmentation into baryons. We present here a search for the decay of a B meson in four baryons: B→pp¯pp¯ , not yet observed. The data set consists of about 470 million BB¯ pairs collected with the BaBar detector attheSLAC National Accelerator Laboratory. Experimental Collaboration Presenters: ZANI, Laura (INFN - National Institute for Nuclear Physics); ZANI, Laura Session Classification: Poster session Track Classification: Flavour Physics and Fundamental Symmetries October 6, 2021 Page 848 EPS-HEP 2017 / Report of Contributions ATLAS Track Reconstruction for t … Contribution ID: 1069 Type: Poster Presentation ATLAS Track Reconstruction for the High-Luminosity LHC The large data samples at the High-Luminosity LHC will enable precise measurements oftheHiggs boson and other Standard Model particles, as well as searches for new phenomena such as super- symmetry and extra dimensions. To cope with the difficult challenges such as large radiation doses and high pileup, during Phase II of the ATLAS upgrade the current Inner Detector will be replaced with a new all-silicon Inner Tracker (ITk). The new tracker is expected to cover the range |η|<4.0. The tracking performance of the ITk layout under consideration is evaluated. The forward cover- age would enable track-based rejection of forward pileup jets, which is particularly beneficial for studies of vector boson scattering and Higgs boson production through vector boson fusion. Experimental Collaboration ATLAS Primary author: FENG, Eric (CERN) Presenter: FENG, Eric (CERN) Session Classification: Poster session Track Classification: Detector R&D and Data Handling October 6, 2021 Page 849 EPS-HEP 2017 / Report of Contributions WIMP theory review Contribution ID: 1071 Type: Parallel Talk WIMP theory review Thursday, 6 July 2017 11:30 (30 minutes) The complementarity of direct, indirect and collider searches for dark matter has improved our understanding concerning the properties of the dark matter particle. We will review the basic concepts that these methods rely upon and highlight what are the most important information they provide when it comes down to interpret the results in terms of Weakly Interacting Massive Particles (WIMPs). Later, we go over some of the latest results and developments emphasizing the implications to dark matter theory in a broad sense. Experimental Collaboration Presenter: Dr QUEIROZ, FARINALDO (Max Planck Institute for Nuclear Physics - Heidelberg) Session Classification: Dark matter Track Classification: Dark Matter October 6, 2021 Page 850 EPS-HEP 2017 / Report of Contributions On the Matter Content of Astroph … Contribution ID: 1072 Type: Parallel Talk On the Matter Content of Astrophysical Jets Thursday, 6 July 2017 09:36 (18 minutes) High-energy space missions allow keeping watch over blazars, which are jet emitting astrophysical sources that can flare. They provide deep insights into the engine powered by supermassive black holes. However, having a blazar caught in a very bright flaring state is not easy requiring long surveys. The observation of such flaring events represents a goldmine for theoretical studies. Such a flaring event was captured by the INTEGRAL mission in June 2015 while performing its today’s deepest extragalactic survey when it caught the prominent blazar 3C 279 in its brightest flare ever recorded at gamma-ray energies. The flare was simultaneously recorded by theFermi- LAT mission, by the Swift mission, by the INTEGRAL mission and by observations ranging from UV, through optical to the near-IR bands. The derived snapshot of this broad spectral energy distribution of the flare has been modeled in the context of a one-zone radiation transfer leptonic and lepto-hadronic models constraining the matter content. I will discuss results and challenges faced by trying to reconcile these observations and theory. I will also show very recent results from TeV observations by Atmospheric Cherenkov Telescopes of the flare of 3C 279 and how they relate to our predictions. Experimental Collaboration Primary author: BOTTACINI, Eugenio (University of Padova) Presenters: BOTTACINI, Eugenio (University of Padova); BOTTACINI, Eugenio Session Classification: Astroparticle physics Track Classification: Astroparticle Physics October 6, 2021 Page 851 EPS-HEP 2017 / Report of Contributions Thermodynamic instabilities and s… Contribution ID: 1073 Type: Poster Presentation Thermodynamic instabilities and strangeness production in hot and dense hadronic matter One of the very interesting aspects in the high energy heavy-ion collisions experiments and in nuclear astrophysics is a detailed study of the thermody- namic properties of strongly interacting nuclear matter far away from the nu- clear ground state. The main goal of this contribution isto show that thermo- dynamic instabilities and phase transitions can take place at nite net baryon density and temperature, where the onset conditions of decon ned quark-gluon plasma should not still realized. Similarly to the low density nuclear liquid-gas phase transition, we show that a nite density phase transition is character- ized by pure hadronic matter with both mechanical instability ( uctuations on the baryon density) that by chemical-di usive instability ( uctuations on the strangeness concentration). The main goal is to investigate how the constraints onthe global conservation of the baryon number, electric charge fraction, and strangeness neutrality, in the presence of Delta-isobar degrees of freedom, hy- perons, and strange mesons, in uence the behavior of the equation of state in a regime of nite values of baryon density and temperature. It turns out that in this situation hadronic phases with di erent values of strangeness content may coexist, altering signi cantly meson-antimeson ratios. Experimental Collaboration Primary author: LAVAGNO, Andrea (Politecnico di Torino, Italy) Presenter: LAVAGNO, Andrea (Politecnico di Torino, Italy) Session Classification: Poster session Track Classification: Heavy Ion Physics October 6, 2021 Page 852 EPS-HEP 2017 / Report of Contributions The long string at the stretched ho… Contribution ID: 1074 Type: Poster Presentation The long string at the stretched horizon and the entropy of large non-extremal black holes We discuss how long strings can arise at the stretched horizon and how they can account for the Bekenstein-Hawking entropy. We use the thermal scalar field theory to derive the asymptotic density of states and corresponding stress tensor of a microcanonical long string gas in Rindler space. We show that the equality of the Hagedorn and Hawking temperatures gives rise to the tree-level entropy of large black holes in accordance with the Bekenstein-Hawking-Wald formula. Experimental Collaboration Primary author: VERSCHELDE, Henri Presenter: VERSCHELDE, Henri Session Classification: Poster session Track Classification: Quantum Field and String Theory October 6, 2021 Page 853 EPS-HEP 2017 / Report of Contributions A low-cost Cherenkov detector to … Contribution ID: 1075 Type: Poster Presentation A low-cost Cherenkov detector to be tested in CERN’s T9 beam line The TCO-Asa is a 2015 established team of high-school students of the Liceo Scientifico T.Calzecchi Onesti, in Fermo (Italy), who built a detector instrumented by consumer components including a CMOS camera and a silicon photomultiplier readout by the open-source ArduSiPM kit, to study the Cherenkov effect in water. The proposed poster presents the main activities of the students that included the definition ofthe geometry of the detector, the realisation of the structure prepared by Scanny3D, the optimisation of the coupling between the water and the sensors, the experiences with 18F (prepared by Acom SRL) and 226Rd radioactive sources, and the results of the tests performed at the Beam Test Facility in INFN-Frascati in 2016. The team proposed to expose the detector to a test beam at CERN in 2016 and in 2017 withinthe Beamline for School initiative. The project was assessed among the best in 2016, and wonthe competition in 2017. A test beam, with an improved detector, is planned in September 2017 at CERN, with the PS beam facility. Experimental Collaboration Primary author: FRANCAVILLA, Paolo (LPNHE and Institute Lagrange de Paris - ILP (FR)) Presenter: FRANCAVILLA, Paolo (LPNHE and Institute Lagrange de Paris - ILP (FR)) Session Classification: Poster session Track Classification: Outreach, Education, and Diversity October 6, 2021 Page 854