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NuFact 2021: The 22nd International Workshop on Neutrinos from Accelerators

https://indico.cern.ch/e/855372 NuFact 2021: The … / Report of Contributions NUSTORM + ENUBET

Contribution ID: 1 Type: not specified

NUSTORM + ENUBET

September 30, 2021 Page 1 NuFact 2021: The … / Report of Contributions Detecting and studying high- …

Contribution ID: 3 Type: Oral

Detecting and studying high-energy neutrinos with FASERν at the LHC Thursday, 9 September 2021 14:20 (22 minutes)

FASERν at the CERN LHC is designed to directly detect collider neutrinos for the first time and study their cross sections at TeV energies. The detector will be located 480 m downstream ofthe ATLAS interaction point. With FASERν, the three-flavor neutrino cross-sections will be measured in the currently unexplored energy range between 350 GeV and 5 TeV. In particular, tau-neutrino and electron-neutrino cross sections will be measured at the highest energy ever. From the other perspective, FASERν can measure forward neutrino production, and provide novel constraints on forward particle production. In 2018 we performed a pilot run with the aims of measuring particle fluxes at the detector lo- cation and of detecting neutrino interactions for the first time at the LHC. We installed a30-kg lead/tungsten emulsion detector and collected data of 12.2 fb−1. The analysis of this data has yielded several neutrino interaction candidates, excluding the no-signal hypothesis at the 2σ level.

During Run-3 of the LHC starting from 2022, we will deploy an emulsion detector with a target mass of 1.1 tons, coupled with the FASER magnetic spectrometer. This would yield roughly 1,300 νe, 9,000 νµ, and 30 ντ interacting in the detector. We present the status and plan of FASERν, as well as the neutrino detection in the 2018 data.

Working group WG5

Primary author: ARIGA, Tomoko (Kyushu University (JP)) Presenter: CHEN, Xin (Tsinghua University (CN)) Session Classification: WG 5

September 30, 2021 Page 2 NuFact 2021: The … / Report of Contributions Non-zero θ13 and Leptogenesis in …

Contribution ID: 4 Type: Poster

Non-zero θ13 and Leptogenesis in Type-I seesaw with ∆(27) Discrete Symmetry

In this work, we consider a beyond the Standard Model (SM) framework, based on the non-abelian discrete group ∆(27) to accommodate the observed non-zero reactor mixing angle θ13. The deviation from the tri-bimaximal (TBM) neutrino mixing pattern, in the context of the type-I seesaw, is realized by including new particles to the SM particle content, which thus provides a non-zero θ13, consistent with the recent experimental results. The non-zero neutrino masses can be understood via type-I seesaw mechanism by introducing three right-handed neutrinos, which transform as triplets and a SU(2)L scalar singlet under ∆(27) symmetry. Similarly, to accommodate the charged lepton mass, SU(2)L scalar doublets transforming as singlets under ∆(27) symmetry are also included. We demonstrate that the model successfully explains all the neutrino oscillation parameters such as the atmospheric and solar mass squared differences, all the mixing angles, and the CP-violating∑ phase δCP , as well as the cosmological bound on the sum of active neutrino masses ( mi ). In addition, it also explains the baryon asymmetry of the Universe through Leptogene- sis. The non-zero lepton asymmetry is generated through the decay of the right-handed neutrinos, involving the neutrino Yukawa couplings.

Working group WG5

Primary authors: Ms SETHI, ITISHREE (IIT HYDERABAD); Dr PATRA, SUDHANWA (IIT BHI- LAI); Prof. MOHANTA, RUKMANI (UNIVERSITY OF HYDERABAD); Dr SINGIRALA, SHIVARA- MAKRISHNA (IIT INDORE)

Presenter: Ms SETHI, ITISHREE (IIT HYDERABAD) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 3 NuFact 2021: The … / Report of Contributions Latest Results from JSNS2

Contribution ID: 5 Type: Oral

Latest Results from JSNS2 Thursday, 9 September 2021 15:26 (22 minutes)

The JSNS2 (J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source) experiment will search for neutrino oscillations over a short 24 m baseline with delta m square near 1 eV square at the J-PARC Materials and Life Science Experimental Facility. The JSNS2 detector is filled with 17 tons of gadolinium-loaded liquid scintillator (LS) with an additional 31 tons of unloaded LS in the intermediate gamma-catcher and outer veto. A 1 MW proton beam (3 GeV) incident on a mercury target produces an intense neutrino beam from muon decay-at-rest. The experiment will search for muon antineutrino to electron antineutrino oscillations detected via the inverse beta decay reaction (electron antineutrino + proton -> positron + neutron), which is then tagged by the distinctive gammas from neutron capture on gadolinium. The JSNS2 experiment is expected to provide the ultimate test of the LSND anomaly by replicating nearly identical conditions with a much better S/N ratio. In June 2020, the JSNS2 experiment took the first 10 days of physicsdata after scintillator filling and extracted the scintillator for the summer maintenance of theMLF.Since January 2021 a long physics run has been started, following scintillator filling for the second time. In parallel, we are preparing the JSNS2-II experiment, the second phase of the JSNS2 experiment, with a second detector that has 35 tons of fiducial weight and a 48 m baseline. The second phase will improve the sensitivity of the search for sterile neutrino, especially in the low delta m square region. In this talk, we will summarize the detector operation and subsystems including the scintillator filling and extraction procedure, data acquisition system, preliminary data analysis status, andthe prospect of the JSNS2-II experiment.

Working group WG5

Primary authors: ROTT, Carsten (Sungkyunkwan University); RUIZ, Richard (Universite Catholique de Louvain)

Presenter: MARUYAMA, Takasumi (KEK) Session Classification: WG 5

September 30, 2021 Page 4 NuFact 2021: The … / Report of Contributions Tests of neutrino mass models at L …

Contribution ID: 6 Type: Oral

Tests of neutrino mass models at LHCb Thursday, 9 September 2021 13:00 (20 minutes)

The unique design of the LHCb detector, with a flexible trigger and a precision vertex detector, enables competitive and world-best limits on the production of heavy neutral leptons, particularly for those with low masses and produced from decays of B mesons via off-shell W decays. A review of existing results will be presented, and prospects will be discussed.

Working group WG5

Primary authors: RICCIARDI, Stefania (Science and Technology Facilities Council STFC (GB)); LHCB COLLABORATION

Presenter: BORSATO, Martino (Ruprecht Karls Universitaet Heidelberg (DE)) Session Classification: WG 5

September 30, 2021 Page 5 NuFact 2021: The … / Report of Contributions Status and future prospects of lept …

Contribution ID: 7 Type: Oral

Status and future prospects of lepton universality tests at LHCb Wednesday, 8 September 2021 17:00 (30 minutes)

Tests of lepton flavour universality are particularly sensitive to the presence of physics beyond the Standard Model. Recent results and future prospects with semileptonic and rare heavy flavour decays at LHCb are presented.

Working group WG4

Presenter: PUTHUMANAILLAM, Resmi (Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France)

Session Classification: WG 4

September 30, 2021 Page 6 NuFact 2021: The … / Report of Contributions Tests of neutrino mass models at A …

Contribution ID: 9 Type: Oral

Tests of neutrino mass models at ATLAS Thursday, 9 September 2021 13:20 (20 minutes)

Multiple theories beyond the Standard Model predict the existence of heavy neutrinos, such as the Type I or Type III seesaw mechanisms which can explain the light neutrino masses, or left-right symmetric models which restore parity symmetry in weak interactions at higher energy scale and predict right-handed counterparts to the weak gauge bosons. Searches for such heavy Majorana or Dirac neutrinos with the ATLAS detector, which can also lead to boosted or also displaced signatures, will be presented using proton-proton data from the LHC at a center-of-mass energy of 13 TeV.

Working group WG5

Presenter: NOVAK, Tadej (Deutsches Elektronen-Synchrotron (DE)) Session Classification: WG 5

September 30, 2021 Page 7 NuFact 2021: The … / Report of Contributions Status of the SND@LHC experiment

Contribution ID: 10 Type: Oral

Status of the SND@LHC experiment Thursday, 9 September 2021 15:04 (22 minutes)

The SHiP Collaboration has proposed a general-purpose experimental facility operating inbeam dump mode at the CERN SPS accelerator with the aim of searching for light, long-lived exotic particles of Hidden Sector models. The SHiP experiment incorporates a muon shield based on magnetic sweeping and two complementary apparatuses. The detector immediately downstream of the muon shield is optimised both for recoil signatures of light dark matter scattering and for tau neutrino physics, and consists of a spectrometer magnet housing a layered detector system with heavy target plates, emulsion film technology and electronic high precision tracking. The second detector system aims at measuring the visible decays of hidden sector particles to both fully reconstructible final states and to partially reconstructible final states with neutrinos, ina nearly background free environment. The detector consists of a 50 m long decay volume under vacuum followed by a spectrometer and particle identification with a rectangular acceptance of5 m in width and 10 m in height. Using the high-intensity beam of 400 GeV protons, the experiment is capable of integrating 2 × 1020 protons in five years, which allows probing dark photons, dark scalars and pseudo-scalars, and heavy neutrinos with GeV-scale masses at sensitivities that exceed those of existing and projected experiments. 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, acoupling range for which baryogenesis and active neutrino masses can be explained. The sensitivity to light dark matter reaches well below the elastic scalar Dark Matter relic density limits in the rangefrom a few MeV/c2 up to 200 MeV/c2. The tau neutrino deep-inelastic scattering cross-sections willbe measured with a statistics a thousand 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. Following the review of the Technical Proposal, the Collaboration recently submitted to the CERN SPS Committee a Comprehensive Design Study. These studies have resulted in a mature proposal discussed at the European Strategy for Particle Physics Update meeting in Granada. A measurement with a SHiP target replica of the flux of muons from 400GeV proton interactions was performed at SPS during 2018 and will be reported at this conference. A measurement of charm production with a SHiP-like target interleaved with emulsion-based detectors was performed at SPS during 2018 and will be reported at this conference.

Working group WG5

Primary author: VAN HERWIJNEN, Eric (CERN) Presenter: VAN HERWIJNEN, Eric (CERN) Session Classification: WG 5

September 30, 2021 Page 8 NuFact 2021: The … / Report of Contributions Physics potential of the ESSnuSB

Contribution ID: 13 Type: not specified

Physics potential of the ESSnuSB Thursday, 9 September 2021 13:16 (18 minutes)

The ESSνSB project proposes to base a neutrino ”Super Beam” of unprecedented luminosity atthe European Spallation Source. The original proposal identified the second peak of the oscillation probability as the optimal to maximize the discovery potential to leptonic CP violation. However this choice reduces the statistics at the detector and penalizes other complementary searches such as the determination of the atmospheric oscillation parameters, particularly the octant of θ23 as well as the neutrino mass ordering. We explore how these shortcomings can be alleviated by the combination of the beam data with the atmospheric neutrino sample that would also be collected at the detector. We find that the combination not only improves very significantly these drawbacks, but also enhances both the CP violation discovery potential and the precision in the measurement of the CP violating phase, for which the facility was originally optimized, by lifting parametric degeneracies. We then reassess the optimization of the ESSνSB setup when the atmospheric neutrino sample is considered, with an emphasis in performing a measurement of the CP violating phase as precise as possible. We find that for the presently preferred value of δ -π/2, shorter baselines like that with the Zinkgruvan detector site (360km) and longer running time in neutrino mode would be optimal. In these conditions, a measurement better than 14º would be achievable for any value of the θ23 octant and the mass ordering. Conversely, if present and next generation facilities were not able to discover CP violation, longer baselines like that with the Garpenberg detector site (540 km) and more even splitting between neutrino and neutrino modes would be preferable. Thelatter choices would allow a 5 σ discovery of CP violation for around a 60\% of the possible values of δ and to determine its value with a precision around 6º if it is close to 0 or π.

Working group WG1

Primary authors: FERNANDEZ MARTINEZ, Enrique; BLENNOW, Mattias (KTH Royal Institute of Technology); ROSAURO ALCARAZ, Salvador (Universidad Autónoma de Madrid); OTA, Toshihiko (Universidad Autonoma de Madrid)

Presenter: ROSAURO ALCARAZ, Salvador (Universidad Autónoma de Madrid) Session Classification: WG 1

September 30, 2021 Page 9 NuFact 2021: The … / Report of Contributions Search for lepton flavour violating …

Contribution ID: 16 Type: Poster

Search for lepton flavour violating decays of the Higgs boson with Run II data at CMS

A search for lepton flavour violating (LFV) decays of the Higgs boson to a muon and atau,and an electron and a tau, will be presented. A dataset of 137fb-1 of proton-proton collisions collected by the CMS detector in Run II, at a center-of-mass energy of 13TeV is being used to perform the search. The dominant background contributions for this search are coming from theDrell- Yan process, misidentified leptons, and the top-quark pair-production process. We are using data- driven techniques to estimate the majority of the background. In our previous search using 2016 data, we set the observed (expected) upper limits on the LFV branching fractions of the Higgs boson to be B(H to mu tau) < 0.25%(0.25%) and B(H to e tau) < 0.61%(0.37%), at 95% confidence level. With the current search, we anticipate setting the most stringent limits to date on these branching fractions using the full Run II data.

Working group WG4

Primary author: MEYER, Arnd (Rheinisch Westfaelische Tech. Hoch. (DE)) Presenter: MEYER, Arnd (Rheinisch Westfaelische Tech. Hoch. (DE)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 10 NuFact 2021: The … / Report of Contributions The Mu2e experiment at Fermilab

Contribution ID: 17 Type: not specified

The Mu2e experiment at Fermilab

The Mu2e experiment, under construction at Fermilab, will search for the neutrinoless coherent conversion of the muon into an electron in the field of an aluminum nucleus. This Charged Lepton Flavor Violating (CLFV) process has a very clear signature, a single monoenergetic electron with energy slightly below the muon rest mass. The Mu2e experiment aims to improve by four orders of magnitude the current best limit on the ratio (Rµe) between the conversion and muon capture −17 rates and reach a single event sensitivity of 3 × 10 on Rµe. Another important physics goal would be that of searching for a Lepton Number Violating (LNV) process. Neutrinoless double beta decay (0νββ) has set the most stringent limit on this kind of process. The conversion of stopped negative muons to positrons in the field of anucleus, µ− + N(A, Z) → e+ + N(A, Z−2), is an example of both CLFV and LNV. Mu2e will use a intense, pulsed, negative muon beam sent to an aluminum target for a total number of 1018 stopped muons. The production and transport of the muons is achieved with aso- phisticated magnetic system comprised of a production, a transport and a detector solenoid. The Detector Solenoids hosts the stopping target made of aluminum followed by a straw-tube tracker and electromagnetic calorimeter. The entire detector region is surrounded by a Cosmic RayVeto system. Mu2e is under construction at the Muon Campus at Fermilab. Requirements, tests on prototypes, and status of the production will be discussed. The experiment will start in late 2023 and will take 4-5 years of data-taking to reach our goal.

Working group WG4

Primary author: DIOCIAIUTI, Eleonora (INFN - National Institute for Nuclear Physics) Presenter: DIOCIAIUTI, Eleonora (INFN - National Institute for Nuclear Physics)

September 30, 2021 Page 11 NuFact 2021: The … / Report of Contributions Model-independent way to test the …

Contribution ID: 18 Type: Poster

Model-independent way to test the CPT violation using NOvA, T2K and INO experiments

Charge-Parity-Time (CPT) symmetry governs that the oscillation parameters for neutrinos and anti-neutrinos are to be identical. Different mass and mixing parameters for these particles may give us a possible hint for CPT violation in the neutrino sector. Using this approach, we discuss the ability of long-baseline and atmospheric neutrino experiments to determine the difference be- 2 − 2 2 − 2 ¯ tween mass squared splittings (∆m32 ∆m ¯ 32) and atmospheric mixing angles (sin θ23 sin θ23) of neutrinos and anti-neutrinos. We show the joint sensitivity of the T2K, NOvA and INO experiments to such CPT violating observables in different possible combinations of octant for neutrinos and anti-neutrinos.

Working group WG1

Primary author: Dr KAUR, Daljeet (SGTB Khalsa College, University of Delhi) Presenter: Dr KAUR, Daljeet (SGTB Khalsa College, University of Delhi) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 12 NuFact 2021: The … / Report of Contributions Mu2e-II An Upgrade of the Mu2e …

Contribution ID: 19 Type: not specified

Mu2e-II An Upgrade of the Mu2e for the Fermilab PIP-II Era

The Mu2e experiment, currently in advance stages of construction, isusinga novel technique to search for new physics through lepton flavor violation in the direct conversion of a stopped muon into an electron. The goal is to obtain sensitivities of a factor of 10,000 over existing limits. We discuss an evolution of Mu2e, called Mu2e-II, that would profit from the increased proton intensity provided by the Fermilab PIP-II accelerator upgrade to increase the sensitivity by up to an additional order of magnitude. The opportunities and challenges of harnessing this increased intensity to further the reach of Mu2e will be discussed.

Working group WG4

Primary author: Prof. DUKES, E. Craig (University of Virginia) Presenter: Prof. DUKES, E. Craig (University of Virginia)

September 30, 2021 Page 13 NuFact 2021: The … / Report of Contributions DUNE experiment physics

Contribution ID: 20 Type: not specified

DUNE experiment physics

The Deep Underground Neutrino Experiment (DUNE) will feature a 40-kton liquid argonTPC detector situated a mile below the surface at the Sanford Underground Research Facility. A new broadband high-intensity neutrino source and Near Detector complex will be located at Fermilab, 1300 kilometers away. This arrangement will provide unprecedented sensitivity in the search for neutrino CP violation, determination of the neutrino mass ordering, and precision measurements of neutrino mixing parameters. The underground Far Detector also allows for low background, low threshold observations of supernova neutrinos, with a unique sensitivity to the electron neutrino flux. Further, DUNE will conduct a wide range of searches for physics beyond the Standard Model, including baryon number violation, rare scattering processes, and non-standard flavor transitions. In this talk, we review DUNE’s extensive physics program and show updated sensitivities.

Working group WG1

Primary author: Dr NOWAK, Jaroslaw Andrzej (Lancaster University (GB)) Presenters: Dr NOWAK, Jaroslaw Andrzej (Lancaster University (GB)); NEBOT GUINOT, Miquel (The University of Edinburgh (GB)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 14 NuFact 2021: The … / Report of Contributions Beyond the Standard Model Physi …

Contribution ID: 24 Type: Oral

Beyond the Standard Model Physics Prospects at Deep Underground Neutrino Experiment Wednesday, 8 September 2021 15:20 (20 minutes)

The Deep Underground Neutrino Experiment (DUNE) is an international project for neutrino physics and proton-decay searches, currently in the design and planning stages. Once built, DUNE will consist of two detectors exposed to the world’s most intense neutrino beam. The near detector will record neutrino interactions near the beginning of the beamline, at Fermilab. The other, much larger, detector, comprising four 10-kton liquid argon time projection chambers (TPCs), will be installed at a depth of 1.5 km at the Sanford Underground Research Facility in South Dakota, about 1300 km away from the neutrino source. The unique combination of the high-intensity neutrino beam with DUNE’s high-resolution near detector system and massive LArTPC far detector enables a variety of probes of BSM physics, either novel or with unprecedented sensitivity, from the potential discovery of new particles (sterile neutrinos or dark matter), to precision tests of beyond the three-flavour mixing paradigm, Non- standard Neutrino Interactions, Heavy Neutral Leptons, or the detailed study of rare processes (e.g. neutrino trident production). The talk will review these physics topics and discuss the prospects for their discovery at the DUNE experiment.

Working group WG5

Presenters: MARTIN-ALBO, Justo (Harvard University); MARTIN-ALBO, Justo Session Classification: WG 5

September 30, 2021 Page 15 NuFact 2021: The … / Report of Contributions ProtoDUNE detector

Contribution ID: 26 Type: Oral

ProtoDUNE detector Thursday, 9 September 2021 13:10 (20 minutes)

(Please update abstract) The Deep Underground Neutrino Experiment (DUNE) will use large liquid argon (LAr) detector consisting of four modules, each with a fiducial mass of 10 ktons of LAr. One of the technology options for the far detector modules is a liquid-argon Time Projection Chamber (TPC) working in Dual-Phase mode. In a Dual-Phase TPC, ionization charge deposited in the liquid argon volume is drifted towards the liquid surface, extracted into the argon vapour, amplified by Large Electron Multipliers (LEM) and collected by an anode plane with strip readout. To validate this technology, a kton-scale prototype, ProtoDUNE Dual-Phase, has been constructed and is currently operating at the CERN neutrino platform. In this talk, we will cover the principal features of the detector design, discuss its operation, and show some preliminary results from the collected comic ray data samples.

The single-phase liquid argon TPC at CERN (ProtoDUNE-SP) is an engineering prototype forthe first module of the DUNE far detector. This prototype which has dimensions of a cubeofabout 10m edge provides full validation of the use of the membrane tank technology for large dimension cryostats. Furthermore, the very high performance of the protoDUNE-SP TPC with more than 500 days of continuous and stable operation, demonstrated the reliability of the LAr detection technology at a scale never tested before. In this talk, we will review the main characteristics and milestones of the construction and installation of protoDUNE-SP which provide a series of benchmarks for DUNE. The performance for several different detector working points will alsobe discussed.

Working group WG6

Primary author: WU, Wenjie (University of California, Irvine) Presenter: WU, Wenjie (University of California, Irvine) Session Classification: WG6

September 30, 2021 Page 16 NuFact 2021: The … / Report of Contributions Status of the DUNE near detector

Contribution ID: 28 Type: Oral

Status of the DUNE near detector Thursday, 9 September 2021 13:30 (20 minutes)

DUNE is a long-baseline neutrino oscillation experiment that will take data in a wide-band neutrino beam at Fermilab in the latter half of the 2020s. The experiment is planning to build avery capable near detector to facilitate the high precision extraction of oscillation parameters. Part of the mission of the near detector is to acquire powerful data sets that can be used to constrain the fits used in the oscillation analyses and improve the neutrino interaction model. In this talk,the status of the DUNE near detector design is reviewed.

Working group WG6

Primary author: DIURBA, Richard (University of Minnesota) Presenter: DIURBA, Richard (University of Minnesota) Session Classification: WG6

September 30, 2021 Page 17 NuFact 2021: The … / Report of Contributions Measurement of space charge effe …

Contribution ID: 29 Type: Poster

Measurement of space charge effects and Energy calibration in ProtoDUNE-SP

The single-phase liquid argon prototype at CERN (ProtoDUNE-SP) acts as a validation ofthedesign for the DUNE single-phase far detector. With a total mass of 770 tons, it is the largest monolithic liquid argon single-phase time projection chamber in the world. ProtoDUNE-SP collected test- beam in autumn of 2018 and has been collecting cosmic and special calibration data since the end of 2018. The accumulation of positive ions in a LArTPC located on the surface can distort the electric field and the reconstructed particle trajectories. It is critical to understand and correct for the space charge effects in order to achieve the desired spatial and calorimetric resolutions in the LArTPC. This talk will present the measurement of space charge effects and the calorimetric measurements of the detector in ProtoDUNE-SP.

Working group WG6

Presenter: MOTE, Mitchell W (LSU) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 18 NuFact 2021: The … / Report of Contributions Nonstandard-interaction phenome …

Contribution ID: 35 Type: Poster

Nonstandard-interaction phenomenology on flavour symmetry

The neutrino oscillation is the most important discovery for beyond-the-standard-model physics (BSM). We successfully use three mixing angles, two mass-squared differences, and one Dirac-CP phase to describe them. These six parameters can be explained and predicted by the theoryof flavour symmetry theorem. The model of flavour symmetries should also predict some otherBSM phenomenology, such as nonstandard interactions, which is the BSM interaction in the neutrino oscillation. This inspires us in this talk to investigate how we can extend our knowledge offlavour symmetry theorem through nonstandard interactions.

Working group WG5

Primary author: Dr WANG, TseChun (SYSU) Presenter: Dr WANG, TseChun (SYSU) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 19 NuFact 2021: The … / Report of Contributions Double beta decay results from the …

Contribution ID: 36 Type: Poster

Double beta decay results from the CUPID-0 experiment

A convincing observation of neutrino-less double beta decay (0DBD) relies on the possibility of operating high-energy resolution detectors in background-free conditions. Scintillating cryogenic calorimeters are one of the most promising tools to fulfill the requirements for a next-generation experiment. Several steps have been taken to demonstrate the maturity of this technique, starting form the successful experience of CUPID-0. The CUPID-0 experiment demonstrated the complete rejection of the dominant alpha background measuring the lowest counting rate in the region of interest for this technique. Furthermore, the most stringent limit on the Se-82 0DBD was established running 26 ZnSe crystals during two years of continuous detector operation. In this contribution we present the final results of CUPID-0 Phase I including a detailed model of the background, the measurement of the 2DBD half-life and the evidence that this nuclear transition is single state dominated. The first results obtained after the upgrade of the detectorin 2019 are presented as well.

Working group WG5

Primary author: BELLINI, Fabio (University of Rome) Presenter: BELLINI, Fabio (University of Rome) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 20 NuFact 2021: The … / Report of Contributions Search for K+ decays to a lepton a …

Contribution ID: 37 Type: Oral

Search for K+ decays to a lepton and invisible particles Thursday, 9 September 2021 14:42 (22 minutes)

The NA62 experiment at CERN reports searches for K+ → e+N, K+→μ+N and K+→μ+νX decays, where N and X are massive invisible particles, using the 2016-2018 data set. The N particle is assumed to be a heavy neutral lepton, and the results are expressed asupper limits of O(10−9) and O(10−8) of the neutrino mixing parameter |Ue4|2 and |Uμ4|2, improving on the ear- lier searches for heavy neutral lepton production and decays in the kinematically accessible mass range. The X particle is considered a scalar or vector hidden sector mediator decaying to an invisible final state, and upper limits of the decay branching fraction for X masses in the range 10-370 MeV/c2 are reported for the first time, ranging from O(10−5) to O(10−7). An improved upper limit of 1.0×10−6 is established at 90% CL on the K+→μ+ννν¯ branching fraction.

Working group WG5

Primary author: CENCI, Patrizia (INFN Perugia (IT)) Presenter: LURKIN, Nicolas (Universite Catholique de Louvain (UCL) (BE)) Session Classification: WG 5

September 30, 2021 Page 21 NuFact 2021: The … / Report of Contributions Measurement of the very rare K …

Contribution ID: 38 Type: Poster

Measurement of the very rare K+→π+νν¯ decay at the NA62 experiment at CERN

The NA62 experiment reports the branching ratio measurement BR(K+→π+νν) at 68% CL,based on the observation of 20 signal candidates with an expected background of 7.0 events from the total data sample collected at the CERN SPS during 2016-2018. This provides evidence for the very rare K+→π+νν decay, observed with a significance of 3.4σ. The experiment achieves a single event sensitivity of (0.839±0.054)×10−11, corresponding to 10.0 events assuming the Standard Model branching ratio of (8.4±1.0)×10−11. The result represents the most accurate measurement achieved so far of this ultra-rare decay. Future prospects and plans for data taking from 2021 will also be presented.

Working group WG3

Primary author: CENCI, Patrizia (INFN Perugia (IT)) Presenter: FIORENZA, Renato (Universita e sezione INFN di Napoli (IT)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 22 NuFact 2021: The … / Report of Contributions Search for lepton number and flav …

Contribution ID: 39 Type: Oral

Search for lepton number and flavour violation in K+ and pi0 decays

The NA62 experiment at CERN collected a large sample of charged kaon decays into finalstates with multiple charged particles in 2016-2018. This sample provides sensitivities to rare decays with branching ratios as low as 10-11. Searches for the lepton number violating K+→π−μ+e+ decay and the lepton flavour violating K+→π+μ−e+ and π0→μ−e+ decays are reported. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level. These results improve byone order of magnitude over previous results for these decay modes

Working group WG5

Primary author: OTHER AUTHOR Presenter: OTHER AUTHOR Session Classification: WG 4

September 30, 2021 Page 23 NuFact 2021: The … / Report of Contributions EFT at FASERnu: an experiment to …

Contribution ID: 40 Type: Oral

EFT at FASERnu: an experiment to probe them all Wednesday, 8 September 2021 14:40 (20 minutes)

We will discuss how to systematically study physics beyond the standard model (BSM) in the neutrino experiments within the standard model Effective Field Theory (SMEFT) framework. In this way, the analysis of the data can capture large classes of models, where the new degrees of freedom have masses well above the relevant energy for the experiment. Moreover, it allows to compare several experiments in a unified framework and in a systematic way. The approach could be applied to several short- and long baseline neutrino experiments. We will show the results of this approach at the FASERv experiment, installed 480 m downstream of the ATLAS interaction point. For some coupling structures, we find that FASERν will be able to constrain interactions that are almost three orders of magnitude weaker than the Standard Model weak interactions, implying that FASERν will be indirectly probing new physics at the 10 TeV scale.

Working group WG5

Presenter: TABRIZI, Zahra Session Classification: WG 5

September 30, 2021 Page 24 NuFact 2021: The … / Report of Contributions Application of machine learning te …

Contribution ID: 41 Type: Oral

Application of machine learning techniques for event reconstruction in JUNO Thursday, 9 September 2021 14:40 (20 minutes)

Jiangmen Underground Neutrino Observatory (JUNO) is an up-coming experiment aiming to re- 2 2 | 2 | solve the neutrino mass hierarchy, precisely measure sin θ12, ∆m21 and ∆m31 , investigate solar, atmospheric and geo-neutrinos and address other questions using optical light produced in a 20-kton liquid scintillator in response to the energy deposited by charged particles. The central detector has a spherical shape and is surrounded by about 18 thousand 20” and 26 thousand 3” photo-multiplier tubes (PMT). For achieving the physical goals it is necessary to reconstruct vertex and energy of events using the charge and time information coming from PMTs. Due to the tremendous amount of channels and variety of effects taking place in the detector this task becomes very challenging for traditional methods. Convolutional neural networks (CNN) seem to be a promising alternative. Usually CNN are working with data in Cartesian space, e.g. with rectangular images. In JUNO the sensitive elements (PMT) are arranged on the spherical surface of the central detector. This leads to the necessity of using a projection procedure or a re-design of the neural network structure. The talk is covering different approaches to address this problem.

Working group WG6

Primary authors: Dr GONCHAR, Maxim (JINR, Russia); Dr GROMOV, Maxim (JINR, Russia); Mrs KHATBULLINA, Leyla (HSE, Russia); Dr MALYSHKIN, Yury (JINR, Russia); Mr MANZALI, Francesco (INFN Padova, Italia); Mr PROVILKOV, Ivan (MIPT, Russia); Mr SELIVANOV, Dmitry (SPBU, Rus- sia); Mr TRESKOV, Konstantin (JINR, Russia); Dr USTYUZHANIN, Andrey (HSE) Presenter: Dr MALYSHKIN, Yury (JINR, Russia) Session Classification: WG 1 + WG 6 (WG1 zoom)

September 30, 2021 Page 25 NuFact 2021: The … / Report of Contributions Empowering JUNO physics by me …

Contribution ID: 42 Type: Poster

Empowering JUNO physics by means of an ancillary photodetection system

JUNO is a liquid scintillator detector currently under construction in the south of China. JUNO aims to detect the disappearance of reactor antineutrinos at an average baseline of 53 km, with the primary goal of determining the neutrino mass ordering and performing a sub-percent measurement of three of the neutrino oscillation parameters. This physics program is rooted in the detector’s unprecedented capability to detect 1200 photoelectrons (PEs) per MeV of deposited energy, yielding a 3% energy resolution at 1 MeV. The main photodetection system comprises 18000 20-inch “large” photomultipliers (LPMTs), each of which experiences an illumination varying over two orders of magnitude. To help calibrating the LPMT response in such a demanding environment, JUNO will be instrumented with additional 25600 custom-made 3-inch “small” photomultipliers (SPMTs). They will operate in photon-counting regime by detecting at most 1 PE per neutrino interaction, hence providing a complementary energy estimator. In addition, the SPMT system is designed to provide a semi-independent measurement of the “solar” oscillation parameters, to aid the measurement of supernova neutrinos, and to improve the muon track reconstruction, whose performance is pivotal for background rejection. The SPMTs, together with their power and readout systems, will have to operate under water for over 20 years, posing challenging constraints on the design, reliability and implementation of this major subsystem of JUNO. In this talk, we will present the innovative design of the JUNO SPMT system, its impact on physics, and the current status of SPMT production and testing.

Working group WG6

Primary author: GRASSI, Marco (Padua University (Italy)) Presenters: LEBRIN, Victor (CNRS); LEBRIN, Victor Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 26 NuFact 2021: The … / Report of Contributions ESSνSB Linac and Transfer Line: L …

Contribution ID: 43 Type: Oral

ESSνSB Linac and Transfer Line: Lattice Design and Error Studies Tuesday, 7 September 2021 16:00 (20 minutes)

The ESS neutrino superbeam (ESSνSB) project is being studied as an upgrade to the European Spallation Source (ESS). This proposed upgrade consists of adding an H⁻ source to the existing beamline in order to send H⁻ pulses in between proton pulses, effectively doubling the beam power from 5 MW to 10 MW. In this contribution, we present the 2.5 GeV linear accelerator (linac) lattice and the design of the transfer line from the linac to the accumulator ring, where pulses would be stacked to achieve short proton pulses of high intensity. The results of error studies, quantifying the effect of accelerator imperfections on the beam transport through the linac and transfer line, are also presented.

Working group WG3

Primary authors: BLASKOVIC KRALJEVIC, Neven (European Spallation Source); ESHRAQI, Mo- hammad (ESS - European Spallation Source (SE)); FOLSOM, Benjamin (European Spallation Source); GÅL- NANDER, Björn (ESS ERIC)

Presenter: FOLSOM, Benjamin (European Spallation Source) Session Classification: WG 3

September 30, 2021 Page 27 NuFact 2021: The … / Report of Contributions AGKY Hadronization Model Tunin …

Contribution ID: 47 Type: Oral

AGKY Hadronization Model Tuning in GENIE 3 Wednesday, 8 September 2021 13:16 (18 minutes)

The next generation of neutrino oscillation experiments rely on the precise understanding ofneu- trino interactions in a wide energy range. The GENIE collaboration is constantly engaged inan effort to improve interaction models and fit them against available datasets. A lot of effort isgoing into pion producing processes, so far focusing on the resonant component of the pion production. This is not enough as pion production is entangled with hadronisation models due to theinter- play between deep inelastic scattering and resonant processes. In particular, the knowledge ofthe exact mixture of hadrons in showers affects the efficiency to distinguish between NC/CC events, the topological characterization, and impacts the estimation of backgrounds. The GENIE neutrino Monte Carlo [2] employs an effective low-mass hadronization model known as AGKY [5] whose validity spans from low to high W. At low invariant mass (W < 2.3 GeV/c2), the model is based on the Koba-Nielsen-Olesen (KNO) scaling low while it gradually switches over to PYTHIA6 (W > 3 GeV/c2) [4]. The default AGKY model parameters controlling hadronization at low invariant masses were extracted from some of the FNAL 15” bubble chamber and the Big European Bubble Chamber analysis [6, 1] but PYTHIA has never been tuned to low energy neutrino-hadroprodution data. Moreover, comparisons of the GENIE model against neutrino-induced hadron shower data exposed disagreements between different datasets, which further deteriorates at the PYTHIA region. The GENIE Collaboration addressed this issue by tuning the hadronization model against charged averaged multiplicity data on hydrogen and deuterium targets from bubble chamber experiments. All the experimental procedures followed in the original analysis have been taken into account in the simulation. The tune has been done using the Professor Framework [3] providing with a complete error estimation of the parameters and the correlation between the low-W AGKY parameters and PYTHIA parameters. In this talk, we focus on the discussion of the tuning procedure as well as the impact of the tune on other observables.

References [1] Amsterdam-Bologna-Padova-Pisa-Saclay-Torino Collaboration et al. Charged hadron multi- plicities in high energy ν ̄μn and ν ̄μp interactions. Zeitschrift fu ̈r Physik C Particles and Fields, 11(4):283–292, Dec 1982. [2] C. Andreopoulos et al. The GENIE Neutrino Monte Carlo Generator. Nucl. Instrum. Meth., A614:87–104, 2010. [3] Andy Buckley, Hendrik Hoeth, Heiko Lacker, Holger Schulz, and Jan Eike von Seggern. Sys- tematic event generator tuning for the lhc. 2009. [4] Torbj ̈orn Sj ̈ostrand, Stephen Mrenna, and Peter Skands. Pythia 6.4 physics and manual. Jour- nal of High Energy Physics, 2006(05):026–026, May 2006. [5] T. Yang, C. Andreopoulos, H. Gallagher, K. Hofmann, and P. Kehayias. A hadronization model for few-gev neutrino interactions. The European Physical Journal C, 63(1):1–10, Aug 2009. [6] D. Zieminska et al. Charged-particle multiplicity distributions in νn and νp charged-current interactions. Phys. Rev. D, 27:47–57, Jan 1983. [1] C. Andreopoulos et al. The GENIE Neutrino Monte Carlo Generator. Nucl. Instrum. Meth., A614:87–104, 2010. [2] T. Yang, C. Andreopoulos, H. Gallagher, K. Hofmann, and P. Kehayias. A hadronization model for few-gev neutrino interactions. The European Physical Journal C, 63(1):1–10, Aug 2009. [3] Torbjörn Sjöstrand, Stephen Mrenna, and Peter Skands. Pythia 6.4 physics and manual. Journal of High Energy Physics, 2006(05):026–026, May 2006. [4] D. Zieminska et al. Charged-particle multiplicity distributions in νn and νp

September 30, 2021 Page 28 NuFact 2021: The … / Report of Contributions AGKY Hadronization Model Tunin …

charged-current interactions. Phys. Rev. D, 27:47–57, Jan 1983. [5] D. Zieminska, et al., Charged-particle multiplicity distributions in νµ n and νµ p charged- current interactions, Phys. Rev. D 27 (1983) 47–57 [6] Andy Buckley, Hendrik Hoeth, Heiko Lacker, Holger Schulz, and Jan Eike von Seggern. Systematic event generator tuning for the lhc. 2009.

Working group WG2

Primary author: TENA VIDAL, Julia (University of Liverpool) Presenter: TENA VIDAL, Julia (University of Liverpool) Session Classification: WG 2

September 30, 2021 Page 29 NuFact 2021: The … / Report of Contributions Tests of neutrino mass models at C …

Contribution ID: 48 Type: Oral

Tests of neutrino mass models at CMS Thursday, 9 September 2021 13:40 (20 minutes)

Requested by organizers.

Working group WG5

Presenter: OH, Sungbin (Seoul National University (KR)) Session Classification: WG 5

September 30, 2021 Page 30 NuFact 2021: The … / Report of Contributions Magnetic Field Analysis for Fermil …

Contribution ID: 49 Type: Oral

Magnetic Field Analysis for Fermilab Muon g-2 Thursday, 9 September 2021 14:20 (30 minutes)

The Muon g-2 experiment E989 at Fermilab measures the anomalous magnetic moment ofthe muon aµ with improved precision compared to the Brookhaven (E821) experiments. The Brookhaven results are in tension with the Standard Model by more than 3σ. The determination of aµ requires the measurement of both the muon anomaly frequency ωa and the magnetic field B that confines muons in a storage ring. The field is monitored by a set of coordinated nuclear magnetic resonance (NMR) measurements. NMR probes at fixed locations above and below the storage region constantly monitor the field. An in-vacuum trolley equipped with 17 NMR probes maps themuon storage region, and a special water-based NMR probe provides the calibration for the trolley probes. This presentation focuses on the determination of the time-dependent field maps from combining the fixed probe measurements and the trolley maps. The field maps are combined withthemuon distribution to derive the average field observed by the muons during the measurement. This talk will cover the analysis from the first data run. We acknowledge support from the Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the U.S. DOE-OHEP. The author is supported by the NSF under Grant-1812314.

Working group WG4

Primary author: TEWSLEY-BOOTH, Alec (University of Michigan, Ann Arbor) Presenter: TEWSLEY-BOOTH, Alec (University of Michigan, Ann Arbor) Session Classification: WG 4

September 30, 2021 Page 31 NuFact 2021: The … / Report of Contributions Muon beams at Fermilab

Contribution ID: 50 Type: not specified

Muon beams at Fermilab

Muon is an unstable particle, that plays a rather unique and versatile role in physics measurements. Fermilab has currently a very active muon program with the goal to carry out a sensitive test of the Standard Model as well as to set extraordinary limits on charged-lepton-flavor-violating processes. For instance, the Fermilab g-2 experiment will determine with unprecedented precision the anomalous magnetic moment of the muon while the Mu2e experiment will substantially improve the sensitivity on the search for Charged Lepton Flavor Violation process of a neutrinoless conversion of a muon to an electron. In this talk, I will present an overview of the involved accelerator technology in the design and construction of the aforementioned experiments. I will present recent results from commissioning the beamlines for the Muon g-2 experiment as well as discuss some innovative techniques that we have integrated so that to maximize the muon flux. Finally, I will discuss opportunities for future work.

Working group WG4

Primary author: Dr STRATAKIS, Diktys Presenter: Dr STRATAKIS, Diktys

September 30, 2021 Page 32 NuFact 2021: The … / Report of Contributions StrECAL system for COMET …

Contribution ID: 53 Type: Oral

StrECAL system for COMET Phase-I and Phase-II

The COMET Experiment at J-PARC aims to search for the lepton flavour violating process of muon to electron conversion in a muonic atom, µ−N → e−N, with a 90% confedence level branching-ratio sensitivity of 6 × 10−17, in order to explore the parameter region predicted by most well-motivated theoretical models beyond the Standard Model. The need for this sensitivity places several stringent requirements on both the muon beam and the detector system. In order to realize the experiment effectively and timely, a staged approach to deployment is employed. At the Phase-I experiment, a precise muon-beam measurement will be conducted, and a search for µ−N → e−N will also be carried out with an intermediate sensitivity of 7 × 10−15. The beam measurement in Phase-I experiment and the search for µ−N → e−N with the final sensitivity in Phase-II experiment will be performed by a combined detector system with Straw tracker and ECAL, called StrECAL system. To enable the required momentum resolution (<200 keV/c) for low energy electron signal (=105 MeV), a material budget of tracking detector is essential, i.e. thin-wall straw tracker operational in vacuum is employed. In addition, to enable good enough energy/spacial resolutions for the required trigger (σE/E =5% and σx = 1cm for a 105 MeV electron), highly segmented LYSO crystal viewed with APD is employed as an electromagnetic calorimeter. In this contribution, current status on the R&D and the construction of StrECAL system for COMET Phase-I and Phase-II both will be given.

Working group WG4

Primary author: NISHIGUCHI, Hajime (KEK) Presenter: NISHIGUCHI, Hajime (KEK) Session Classification: WG 4

September 30, 2021 Page 33 NuFact 2021: The … / Report of Contributions Overview of the physics prospects …

Contribution ID: 54 Type: Oral

Overview of the physics prospects in MOMENT Thursday, 9 September 2021 13:52 (18 minutes)

The near future of neutrino oscillation physics will be marked with precision measurements on the standard neutrino mixing parameters. MOMENT introduces a novel method to produce a high-intensity low-energy muon-decay-based neutrino beam, which is ideal to study neutrino oscillations at medium distance. In this talk, we review the general prospects of MOMENT at the precision measurement of the standard parameters as well as in the search for new physics. We will highlight how MOMENT will perform in comparison of other next-generation experiments as well as complement them in the major goal of narrowing down the values of the neutrino mixing parameters.

Working group WG1

Primary author: Dr VIHONEN, Sampsa (Sun Yat-Sen University) Presenter: Dr VIHONEN, Sampsa (Sun Yat-Sen University) Session Classification: WG 1

September 30, 2021 Page 34 NuFact 2021: The … / Report of Contributions The anomalous precession frequen …

Contribution ID: 55 Type: Oral

The anomalous precession frequency measurement in the Fermilab Muon g − 2 experiment Thursday, 9 September 2021 15:20 (30 minutes)

g−2 The muon anomalous magnetic moment, aµ = 2 , can be both measured and computed with high precision, therefore it can provide an important test of the Standard Model and it is a sensitive probe for new physics. The E989 Muon g − 2 Experiment at Fermilab aims to measure aµ with a precision of 140 parts per billion, four time more precisely than the previous experiment at Brookhaven National Laboratory. E989 seeks to either resolve or confirm the discrepancy between the Standard Model value andex- perimental one, which may be a hint of new physics. Recently E989 published a new measurement of aµ from the Run 1 dataset, confirming the previous BNL value with comparable precision.

The aµ measure requires a precise determination of both the muon spin anomalous precession frequency and the average magnetic field seen by the muons as they circulate in a storage ring.The anomalous precession frequency measure is based on the time distribution of high-energy decay positrons observed by 24 electromagnetic calorimeters placed around the inside of the ring, while the magnetic field is constantly monitored by NMR probes. In this talk will present the precession frequency analysis of the Run 1 data (2018), the related systematics and the latest results.

Working group WG4

Primary author: SORBARA, Matteo (INFN - National Institute for Nuclear Physics & University of Rome ”Tor Vergata”)

Presenter: SORBARA, Matteo (INFN - National Institute for Nuclear Physics & University ofRome ”Tor Vergata”) Session Classification: WG 4

September 30, 2021 Page 35 NuFact 2021: The … / Report of Contributions IsoDAR: A High Power Cyclotron …

Contribution ID: 56 Type: Oral

IsoDAR: A High Power Cyclotron for Neutrino Physics and Beyond Wednesday, 8 September 2021 16:30 (30 minutes)

The existence of sterile neutrinos is an important question in our field. IsoDAR is a cyclotron-based electron antineutrino source that produces a pure, well-understood energy spectrum. IsoDAR generates high statistics, which when coupled with an inverse beta decay detector such as KamLAND, is capable of addressing observed anomalies attributed to sterile neutrinos at the 5 sigma level using electron-flavor disappearance. To achieve this level of statistics, the IsoDAR cyclotron must produce 10 mA of protons at 60MeV. This is an order of magnitude more power than any com- mercially available cyclotron. To achieve this, IsoDAR takes advantage of several innovations in accelerator physics, paving the way as a new technology.

Working group WG3

Primary authors: Mr WAITES, Loyd (MIT); ISODAR COLLABORATION Presenter: Mr WAITES, Loyd (MIT) Session Classification: WG 3

September 30, 2021 Page 36 NuFact 2021: The … / Report of Contributions New Physics with nuSTORM

Contribution ID: 57 Type: Poster

New Physics with nuSTORM

The Neutrinos from Stored muons (nuSTORM) facility has been proposed to measure neutrino- nucleon cross-sections with percent level precision. It has been shown that nuSTORM with a detector for short baseline oscillation search has excellent capability to search for the existence of light sterile neutrinos that have been postulated to explain the LSND and MiniBooNE results. This analysis used the Charged Current events in a magnetized Iron calorimeter detector. We study if the large number of Neutral Current events at the detector can be used to constrain the sterile neutrino parameter space further. In addition we also study the constraints on non-unitarity of neutrino mixing matrix using both charged and neutral current events at nuSTORM.

Working group WG1

Primary author: Mr CHAKRABORTY, Kaustav (Physical Research Laboratory) Co-authors: GOSWAMI, Srubabati (Physical Research Laboraotory); LONG, Kenneth Richard (Im- perial College (GB))

Presenter: Mr CHAKRABORTY, Kaustav (Physical Research Laboratory) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 37 NuFact 2021: The … / Report of Contributions A Novel Hit-Based Method to Dist …

Contribution ID: 59 Type: Poster

A Novel Hit-Based Method to Distinguish Tracks and Showers in ProtoDUNE Single Phase

Pandora [1,2] is a pattern recognition software used in liquid argon time projection chamber (LArTPC) experiments such as MicroBooNE, DUNE, SBND, ICARUS, and ProtoDUNE Single Phase (SP). The output of a LArTPC can be considered a high-resolution 2D image and energy depositions, called hits, from particles in a LArTPC create complicated topologies that are broadly classified into tracks and showers. The event reconstruction is particularly challenging when there are multiple overlapping particles and in order to fully harness the imaging capabilities of those experiments, Pandora needs to separate them. A hit-based approach to this problem is presented, which analyses small regions around each hit in data events from ProtoDUNE-SP and from those regions it calculates local variables that are used subsequently in a machine learning approach. After this stage, it is given to each hit a probability to belong to a track or shower-like particle. Results will show the performance of separation between tracks and showers.

[1] Eur. Phys. J. C (2018) 78: 82. [2] Eur. Phys. J. C (2015) 75: 439

Working group WG6

Primary author: Mr VERGANI, Stefano (University of Cambridge) Presenter: Mr VERGANI, Stefano (University of Cambridge) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 38 NuFact 2021: The … / Report of Contributions The Mu2e calorimeter

Contribution ID: 60 Type: Poster

The Mu2e calorimeter

The Mu2e calorimeter consists of 1348 pure CsI crystals coupled to two large area UV-extended Silicon Photomultipliers (SiPMs) organized in two separate annular disks. An intense R & D phase has been pursued to check if this configuration satisfies the Mu2e requirements. In May 2017, a dedicated test has been performed at the Beam Test Facility (BTF) in Frascati (Italy) where a large calorimeter prototype (Module-0) has been exposed to an electron beam in the energy range between 60 and 120 MeV. The prototype consists of 51 crystals, each one readout by two Mu2e SiPMs. We present results for timing and energy resolution both for electrons at normal incidence (0 ◦) and at a grazing impact angle (50 ◦) more similar to the experiment configuration. At the moment the calorimeter group is finishing the Quality Control of crystal al SiPMs andthe installation of the calorimeter is expected for the summer 2020. A description of all the test stations installed for the Quality Control phase of the crystals andthe SiPMs is also reported.

Working group WG6

Primary author: DIOCIAIUTI, Eleonora (INFN - National Institute for Nuclear Physics) Presenter: DIOCIAIUTI, Eleonora (INFN - National Institute for Nuclear Physics) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 39 NuFact 2021: The … / Report of Contributions Prospects and challenges of the M …

Contribution ID: 61 Type: Poster

Prospects and challenges of the Muon Collider

Muon Collider is an extremely attractive option for the future energy-frontier machine. It isca- pable of delivering clean final states of lepton collisions at multi-TeV centre-of-mass energy with the minimal energy consumption. Being a less familiar type of machine compared to e+e- and pp colliders it poses a number of technological challenges that need to be addressed, including the production and acceleration of the muon beams, controlling of the neutrino radiation hazard and mitigation of the beam-induced background with advanced design of both the detector and reconstruction algorithms. In this talk an overview of the mentioned challenges will be presented together with the main solutions studied at the moment. The three main topics that will be covered are: 1. different conceptual designs for obtaining high-energy muon beams; 2. estimated environmental radiation hazard due to neutrinos from the muon beam decays; 3. detector-design considerations and performance studies at a Muon Collider.

Working group WG4

Primary author: BARTOSIK, Nazar (Universita e INFN Torino (IT)) Presenter: BARTOSIK, Nazar (Universita e INFN Torino (IT)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 40 NuFact 2021: The … / Report of Contributions A novel polystyrene based plastic …

Contribution ID: 62 Type: Oral

A novel polystyrene based plastic scintillator production process involving additive manufacturing Wednesday, 8 September 2021 17:12 (18 minutes)

The plastic scintillator detectors are widely used in high-energy physics, in particular inneutrino experiments.They can provide very good particle identification, sub-nanosecond time resolutions, full 3D geometrical acceptance and particle tracking and, at the same time, enough neutrino target mass to minimise the statistical uncertainties.In order to improve the knowledge of neutrino interactions, for instance particularly important for precision measurement of the CP violating phase, future neutrino experiments will require detectors with improved performances and fine granularity, whilst preserving a mass of many tons.The solution is using additive manufacturing, able to quickly make plastic-based objects of any shape with precisions better than 0.1 mm. The applicability of 3D-printing techniques to the manufacture of polystyrene-based scintillator will be discussed. The status of the R\&D and the latest results will be presented.

Working group WG6

Primary author: Dr KOSE, UMUT (CERN) Presenter: Dr KOSE, UMUT (CERN) Session Classification: WG6

September 30, 2021 Page 41 NuFact 2021: The … / Report of Contributions Upgrades of the ARIADNE 1-ton …

Contribution ID: 64 Type: Oral

Upgrades of the ARIADNE 1-ton dual-phase optical liquid argon TPC Wednesday, 8 September 2021 16:54 (18 minutes)

ARIADNE, a state-of-the-art 1-ton dual-phase Liquid Argon Time Projection Chamber (LAr TPC), features a game-changing photographic readout utilising ultra-fast photon sensitive TPX3 cameras to image the secondary scintillation light produced in THGEM holes. ARIADNE underwent testing at the T9 beam line, CERN East Area. ARIADNE is the first dual-phase LAr TPC with photographic capabilities to be positioned at a charged particle beamline, and we successfully imaged beautiful LAr interactions with 1 mm track resolution at momenta between 0.5 GeV to 8 GeV. With this technology we have now created a dream TPC in which you can take videos of particle interactions with ns time resolution and mm spatial resolution just based on light. The system is ideal for colossal dual-phase LAr neutrino detectors at much lower cost and as such is now considered as an option for the fourth module of DUNE. Results using the upgraded system at Liverpool will be presented detailing the many benefits and capabilities of this technology. Additionally, a future larger scale detector using the ARIADNE technology is in the pipeline within the CERN neutrino platform program and will also be discussed.

http://hep.ph.liv.ac.uk/ariadne

Working group WG6

Primary author: Dr MAVROKORIDIS, Konstantinos (University of Liverpool) Presenter: Dr MAVROKORIDIS, Konstantinos (University of Liverpool) Session Classification: WG6

September 30, 2021 Page 42 NuFact 2021: The … / Report of Contributions Muonic X-ray measurmements at …

Contribution ID: 66 Type: not specified

Muonic X-ray measurmements at PSI with medium and high-Z nuclei.

Due to the large overlap between the muon and nuclear wave function, muonic atoms are an exceptionally sensitive system to study short range muon-nuclear/nucleon interactions and probe various nuclear moments. With a physics program focusing on Atomic Parity Violation (APV), the muX collaboration is performing a series of muonic X-ray measurements in medium- and high-Z nuclei, exploiting the coverage and high multiplicity of a germanium detector array and the high- quality negative muon beams at the Paul Scherrer Institute. A measurement of the charge radius of 226Ra, derived from the 2p-1s transition energy, will serve as crucial input for an upcoming APV experiment with electronic radium. To overcome the re- strictions on the allowed amount of radioactive target material, we have developed a novel D2/H2 gaseous target, where a sequence of transfer reactions enable us to stop a standard muon beam in a few micrograms of target material. After developing the technique in 2018 and 2019, the muonic X-ray spectrum of 226Ra and 248Cm was measured. A second measurement program explores the possibility of observing APV directly in muonic atoms. APV arises from the mixing of the opposite parity 2p and 2s atomic states, leading to parity violation in the 2s-1s transition. We focus on Z=30 nuclei, where a measurable branching ratio of the single photon 2s-1s transition is expected. The high granularity of a large solid angle germanium detector array is exploited to suppress background from more intense transitions in the cascade. In this talk, I will discuss the status of the project, focusing on the 2019 experimental campaign where we deployed the high-resolution Miniball germanium detector array from the ISOLDE/CERN facility, and discuss future measurements.

Working group WG4

Primary authors: WAUTERS, Frederik (Universität Mainz); KNECHT, Andreas Presenter: WAUTERS, Frederik (Universität Mainz) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 43 NuFact 2021: The … / Report of Contributions The high-intensity muon beam lin …

Contribution ID: 67 Type: Oral

The high-intensity muon beam line (HiMB) project at PSI Thursday, 9 September 2021 12:30 (25 minutes)

At the Paul Scherrer Institut (PSI) muon rates of up to 4x10^8 mu/s are available, produced by its 1.4 MW proton accelerator complex HIPA. While these are currently the highest muon rates available worldwide, projects in the US and Japan are underway that will be able to surpass these intensities by several orders of magnitude. In order to maintain PSI’s position at the intensity frontier in muon physics and to utilize the unique DC machine structure, a project has started to assess the possibility of creating a next- generation muon beam by modifying the existing Target M station. Initial studies showed that surface muon rates of the order of 10^10 mu+/s can be achievedby placing two normal-conducting capture solenoids close to a slanted slab target and transporting the muons to the experimental areas with a beamline consisting of large-aperture solenoids and dipoles. This contribution will present these studies and the current status of the project.

Working group WG4

Primary author: KNECHT, Andreas Presenter: KNECHT, Andreas Session Classification: WG 3 + WG 4 (WG3 zoom)

September 30, 2021 Page 44 NuFact 2021: The … / Report of Contributions Muon reconstruction with wavefo …

Contribution ID: 68 Type: Poster

Muon reconstruction with waveform information in JUNO

On behalf of the JUNO Collaboration

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator detector currently being built in a dedicated underground laboratory in China. It is a multi-purpose underground experiment with a physics program including neutrino mass hierarchy determination, precision measurement of neutrino oscillation parameters, measurement of solar, atmospheric, geo-neutrinos and other unsolved physical problems. Electron anti-neutrinos are detected via the inverse beta decay by measuring the correlated positron and neutron signals. In this detection channel cosmic ray muon induced radioactive isotopes are the main background, especially 9Li/8He. They are predominantly produced by showing muons which account for about 10%of all muons. Considering that the 9Li/8He background is correlated with the parent muon in time and space, the vertex reconstruction of showers along the muon track is helpful to reject the backgrounds of 9Li/8He and other isotopes. Based on the waveform analysis of Toy MC, we know that the multi-peaks in waveform output by PMTs are caused by these showers. Waveform analysis of muon events and preliminary results of shower vertex reconstruction based on detector simulation will be presented in the poster.

Working group WG6

Primary author: Dr ZHANG, Yongpeng (Institute of High Energy Physics, CAS) Presenter: Dr ZHANG, Yongpeng (Institute of High Energy Physics, CAS) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 45 NuFact 2021: The … / Report of Contributions Search for the muon electric dipole …

Contribution ID: 73 Type: Oral

Search for the muon electric dipole moment at PSI Thursday, 9 September 2021 14:50 (30 minutes)

The presence of a permanent electric dipole moment (EDM) in any elementary particle implies CP violation and thus could help explain the matter-antimatter asymmetry observed in our universe. Within the context of the Standard Model, EDMs of SM particles are extremely small. However, in many beyond SM theories, EDMs could be within experimental reach in the near future. Recently, muon EDM is of particular interest due to the tensions in the anomalous magnetic moment of the muon and the electron, and hints of lepton flavor universality violation in B decays. Moreover, the 23 orders of magnitude difference between the current experimental limit (10−19 e cm) and the SM prediction (10−42 e cm) means muon EDM is one of the least tested areas of the SM and any detected signal is a strong hint of new physics. In this talk, we discuss a dedicated effort at Paul Scherrer Institute to search for the muon EDM using a 1.5 T compact muon storage ring and the frozen spin technique [F.J.M. Farley et al, PRL 93, 052001 (2004)]. This technique is more sensitive than the usual “parasitic” method utilized by the BNL/FNAL/J-PARC collaborations by several orders of magnitude, and could reach (5 x 10−23 e cm) after a year of data taking with the 125 MeV/c muon beam at PSI [A. Crivellin et al, PRD 98, 113002 (2018)].

Working group WG4

Primary author: Prof. KHAW, Kim Siang (Tsung-Dao Lee Institute (CN)) Presenter: Prof. KHAW, Kim Siang (Tsung-Dao Lee Institute (CN)) Session Classification: WG 4

September 30, 2021 Page 46 NuFact 2021: The … / Report of Contributions Short-Baseline neutrino oscillation …

Contribution ID: 74 Type: Oral

Short-Baseline neutrino oscillation searches with the ICARUS detector Tuesday, 7 September 2021 16:00 (22 minutes)

The ICARUS collaboration employed the 760-ton T600 detector in 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. ICARUS performed a sensitive search for LSND-like anomalous νe appearance in the CNGS beam, which contributed to the constraints on the allowed parameters to a narrow region around 1 eV2, where all the experimental results can be coherently accommodated at 90% C.L. After a significant overhaul at CERN, the T600 detector has been installed at Fermilab. In 2020 cryogenic commissioning began with detector cool down, liquid Argon filling and recirculation. ICARUS has started operations andis presently in its commissioning phase, collecting the first neutrino events from the Booster Neu- trino Beam and the NuMI off-axis. The main goal of the first year of ICARUS data taking willthen be the definitive verification of the recent claim by NEUTRINO-4 short baseline reactor experiment both in the νµ channel with the BNB and in the νe with NuMI. After the first year of operations, ICARUS will commence its search for evidence of a sterile neutrino jointly with the SBND near detector, within the Short Baseline Neutrino (SBN) program. The ICARUS exposure to the NuMI beam will also give the possibility for other physics studies such as light dark matter searches and neutrino-Argon cross section measurements. The proposed contribution will address ICARUS achievements, its status and plans for the new run at Fermilab and the ongoing developments of the analysis tools needed to fulfill its physics program.

Working group WG1

Primary author: MENEGOLLI, Alessandro Presenter: TORTI, Marta (Universita & INFN, Milano-Bicocca (IT)) Session Classification: WG 1 + WG 5 (WG1 zoom)

September 30, 2021 Page 47 NuFact 2021: The … / Report of Contributions Core-Collapse Supernova neutrino …

Contribution ID: 77 Type: Poster

Core-Collapse Supernova neutrinos in DarkSide-20k and Argo

When a core-collapse supernova (SN) explodes, only 1 % of its energy is released through electromagnetic waves: the rest is emitted via neutrinos. If a galactic supernova will show up during its data taking, DarkSide-20k, a future 50-ton liquid argon dual-phase TPC, designed for the direct detection of dark matter particles, will perform a flavour insensitive detection of SN neutrinos via coherent elastic neutrino-nucleus scattering, (CE \nu NS), providing additional information onthe explosion mechanism. The sensitivity study is extended to Argo, the following future detector, filled with 300 tons of Liquid Argon. Furthermore, by the comparison with a charged current detection, discrimination between neutrino mass orderings, normal or inverted, can be inferred.

Working group WG6

Primary authors: Mrs LAI, Michela (INFN Cagliari); Dr BONIVENTO, Walter M. (INFN Cagliari); FRANCO, Davide (APC); RENSHAW, Andrew; YE, Ziping Presenter: Mrs LAI, Michela (INFN Cagliari) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 48 NuFact 2021: The … / Report of Contributions Oscillation probability for non- …

Contribution ID: 79 Type: Oral

Oscillation probability for non-standard interactions of neutrino propagation in matter Wednesday, 8 September 2021 15:14 (18 minutes)

In this work, an analytical expression for appearance probability has been derived for neutrino (anti-neutrino) oscillations in matter, including non-standard interactions (NSI-propagation). We consider two NSI parameters ϵeµ and ϵeτ to obtain the expression for νµ → νe ( ν¯µ → ν¯e) transition, relevant to the ongoing and upcoming accelerator neutrino experiments. We also compare our result to that of exact expression of the oscillation probability.

Working group WG1

Primary authors: Mr NATH, Ankur (Tezpur University); Mr BORUAH, Bichitra Bijay (Tezpur University)

Presenter: Mr NATH, Ankur (Tezpur University) Session Classification: WG 1

September 30, 2021 Page 49 NuFact 2021: The … / Report of Contributions Status of the DeeMe experiment to …

Contribution ID: 80 Type: Oral

Status of the DeeMe experiment to search for µ-e conversion at J-PARC MLF Wednesday, 8 September 2021 12:40 (30 minutes)

The DeeMe experiment aims to search for one of the charged lepton flavor violating processes, muon to electron conversion in the field of a nucleus. Our goal is to measure the process with a single event sensitivity of 1 × 10−13 for a graphite target with a novel method, with which the final sensitivity could reach down to a level of 10−15 for a silicon carbide target. That is one or two orders of magnitude better than the current upper limits, 7 × 10−13 for a gold target by the SINDRUM-II experiment at PSI and 4.6 × 10−12 for a titanium target by the experiment at TRIUMF. The construction of the secondary beamline, H Line, is now in progress. Meanwhile, we measured the momentum spectrum of electrons through muon decay-in-orbit (DIO) for the momentum region 48–62 MeV/c at the D2 area, MLF. I will present the preparation status of DeeMe, the detector development, and the measurement of the DIO spectrum.

Working group WG4

Primary author: Dr TESHIMA, Natsuki (Osaka City University) Presenter: Dr TESHIMA, Natsuki (Osaka City University) Session Classification: WG 4

September 30, 2021 Page 50 NuFact 2021: The … / Report of Contributions The HyperMu experiment: measu …

Contribution ID: 81 Type: Poster

The HyperMu experiment: measuring the Zemach radius of the proton

The HyperMu experiment is planning to measure the hyperfine splitting of the muonic hydrogen 1S level to extract the Zemach radius of the proton. A DC muon beam will be stopped in a cryogenic hydrogen target placed inside a laser cavity. After thermalisation and de-excitation, on resonance a powerful 6.8 um laser pulse triggered by the incoming muon will excite the muonic atom to the 1S(F=1) level. The subsequent de-excitation provides enough kinetic energy for the atom todiffuse to the target wall, which is coated with a thin gold layer. The muon quickly transfers to agold atom, the high energy X-rays from the muonic gold cascade are detected as the resonance signal. Last fall, a first test measurement with the detector system was performed at the Paul Scherrer Institute, providing valuable input for the final design of the apparatus. This year, the laser system is being further developed

Working group

Primary authors: WAUTERS, Frederik (Universität Mainz); ANTOGNINI, Aldo (Paul Scherrer Institute)

Presenter: WAUTERS, Frederik (Universität Mainz) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 51 NuFact 2021: The … / Report of Contributions muCool: A novel low-energy muo …

Contribution ID: 83 Type: Oral

muCool: A novel low-energy muon beam for future precision experiments Thursday, 9 September 2021 12:55 (25 minutes)

High precision experiments using muons (µ+) and muonium atoms (µ+e−) provide unique opportunities to test the fundamentals of the Standard Model in a second-generation, fully-leptonic environment, putting a broad spectrum of BSM scenarios within the reach of next generation experiments. Such experiments include the search for the muon electric dipole moment, measurements of the muon g − 2, laser spectroscopy of muonium and gravitational equivalence principle tests using muonium. Such experiments would benefit greatly from an intense, high quality and low energy muon beam. At the Paul Scherrer Institute, a novel phase space compression scheme (muCool) has been developed, which would produce such a beam, reducing the phase space of a standard muon beam by ten orders of magnitude at 10−3 efficiency, for a 107 boost in brightness. The muon beam is stopped in cryogenic helium gas, and using complex electric and magnetic fields in combination with a gas density gradient the muons are steered to a mm-size spot, where they have an eV energy spread. From here, they are extracted through a small orifice into a vacuum and into a magnetic field free region. The process takes less than10 µs, critical to achieving a good efficiency considering the short 2.2 µs muon lifetime. Several key steps in the phase space compression scheme within gas has been demonstrated with high efficiency during several measurements at the PSI muon facility. In this talk, the working principle of the device, the results of recent measurements and prospects for the future will be presented.

This work is supported by SNF grant 200020_172639.

Working group WG4

Presenter: AYRES, Nicholas John (ETH Zurich) Session Classification: WG 3 + WG 4 (WG3 zoom)

September 30, 2021 Page 52 NuFact 2021: The … / Report of Contributions Search for Muon to Electron Conv …

Contribution ID: 84 Type: Oral

Search for Muon to Electron Conversion at J-PARC - COMET Experiment - Wednesday, 8 September 2021 13:40 (30 minutes)

Muon to electron conversion in a muonic atom is a process of charged lepton flavor violation (CLFV). It is not allowed in the Standard Model (SM) and known to be one of the best processes to search for new physics beyond the SM. The COMET experiment aims to search for this process at J-PARC with single-event sensitivity of 3 × 10−17, which is about 10,000 improvement over the current limit. The COMET experiment has taken a staged approach. COMET Phase-I, asthe first phase, aims at a single-event sensitivity of 3 × 10−15 with the partial muon beam line and a Phase-I dedicated detector. The construction of COMET Phase-I has started and its physics runis expected to start in 2022-23. The COMET Phase-II will follow immediately. In this talk, wewill describe the physics motivation of CLFV, and the details of COMET Phase-I / Phase-II together with the current status of the experiment preparation.

Working group WG4

Primary author: CARLOGANU, Cristina (Univ. Blaise Pascal Clermont-Fe. II (FR)) Presenter: CARLOGANU, Cristina (Univ. Blaise Pascal Clermont-Fe. II (FR)) Session Classification: WG 4

September 30, 2021 Page 53 NuFact 2021: The … / Report of Contributions Status of the Short-Baseline Near …

Contribution ID: 85 Type: Poster

Status of the Short-Baseline Near Detector at Fermilab

The Short-Baseline Near Detector (SBND) will be one of three liquid Argon Time Projection Cham- ber (LArTPC) neutrino detectors positioned along the axis of the Booster Neutrino Beam (BNB) at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is currently in the construction phase and is anticipated to begin operation in the second half of 2022. SBND is char- acterised by superb imaging capabilities and will record over a million neutrino interactions per year. Thanks to its unique combination of measurement resolution and statistics, SBND willcarry out a rich program of neutrino interaction measurements and novel searches for physics beyond the Standard Model (BSM). It will enable the potential of the overall SBN sterile neutrino program by performing a precise characterisation of the unoscillated event rate, and by constraining BNB flux and neutrino-Argon cross-section systematic uncertainties. In this talk, the physics reach, current status, and future prospects of SBND are discussed.

Working group WG2

Primary authors: Prof. ANDREOPOULOS, Constantinos (University of Liverpool and STFC/RAL); PALA- MARA, Ornella (Fermilab); SCHMITZ, David (University of Chicago); Dr PANDEY, Vishvas (University of Florida)

Presenter: GUSTAVO , Valdiviesso Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 54 NuFact 2021: The … / Report of Contributions Testing the neutrino mass generat …

Contribution ID: 87 Type: Poster

Testing the neutrino mass generation mechanism at the colliders

The neutrino mass generation mechanism is a mystery so far which explains the possible origin of the tiny observed neutrino masses and the flavor mixings over the decades- which indicates the existence of the beyond the Standard Model (BSM) physics, however, there is no observation of such BSM physics so far. Among the plethora of scenarios, the simple tree level mass generation mechanism with heavy fermions are the interesting ones which are tested at the Large Hadron Collider for the years. In this talk we will discuss briefly about the current status of these models and their prospects in the near future.

Working group WG5

Primary author: DAS, Arindam (Kyungpook National University) Presenter: DAS, Arindam (Kyungpook National University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 55 NuFact 2021: The … / Report of Contributions Latest results from the CUORE ex …

Contribution ID: 89 Type: Oral

Latest results from the CUORE experiment Thursday, 9 September 2021 16:40 (20 minutes)

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for 0νββ decay that has been able to reach the one-tonne mass scale. The detector, located at the LNGS in Italy, consists of an array of 988 TeO2 crystals arranged in a compact cylin- drical structure of 19 towers. CUORE began its first physics data run in 2017 at a base temperature of about 10 mK and in April 2021 released its 3rd result of the search for 0νββ, corresponding to a tonne-year of TeO2 exposure. This is the largest amount of data ever acquired with asolid state detector and the most sensitive measurement of 0νββ decay in 130Te ever conducted, with a median exclusion sensitivity of 2.8×10^25 yr. We find no evidence of 0νββ decay and set alower bound of 2.2 ×10^25 yr at a 90% credibility interval on the 130Te half-life for this process. In this talk, we present the current status of CUORE search for 0νββ with the updated statistics of one tonne-yr. We finally give an update of the CUORE background model and the measurement ofthe 130Te 2νββ decay half-life, study performed using an exposure of 300.7 kg⋅yr.

Working group WG5

Primary authors: RESSA, Alberto; CUORE COLL. Presenter: RESSA, Alberto Session Classification: WG 5

September 30, 2021 Page 56 NuFact 2021: The … / Report of Contributions Possible studies on generalized pa …

Contribution ID: 90 Type: Oral

Possible studies on generalized parton distributions and gravitational form factors Thursday, 9 September 2021 15:14 (18 minutes)

The structure functions F1, F2, and F3 of the nucleon were measured by neutrino deep inelastic inelastic scattering. These structure functions are expressed by collinear parton distribution functions, which indicate longitudinal momentum distributions of partons. In recent years, 3 dimensional (3D) structure functions have been investigated extensively for clarifying the transverse structure of the nucleon in addition to the longitudinal distributions and for understanding the origin of the nucleon spin including the partonic orbital-angular-momentum (OAM) contribution. The OAM contribution should be determined by generalized parton distributions (GPDs), which are measured mainly by deeply virtual Compton scattering and meson productions at lepton accelerator facilities (1). There are also possibilities of measuring the GPDs at hadron facilities by using high-energy exclusive reactions (2). There is another important purpose to investigate the GPDs and the timelike GPDs (or generalized distribution amplitudes) for determining gravitational form factors to find the origin of hadron masses and their internal pressures in terms of quark and gluon degrees of freedom as studied in Ref. (3). Because the LBNF can supply neutrino beam in the energy region of 10 GeV, it is possible ′ to measure the GPDs, for example, by the pion-production reaction νµ +N → µ+π+N \(4,5,6) in figure 1. In general, neutrino reactions are sensitive to the quark flavor, so that their measurements are complementary to the current JLab and COMPASS measurements on the GPDs and also to the future EIC project (7). Combining both neutrino and charged-lepton measurements, we could determine the flavor dependence of the quark GPDs and the gluon GPD.

1 https://research.kek.jp/people/kumanos/tmpnufact2021/nu-gpd-2.eps (1) M. Diehl, Phys. Rept. 388, 41 (2003). (2) S. Kumano, M. Strikman, and K. Sudoh, Phys. Rev. D 80, 074003 (2009); T. Sawada et al., Phys. Rev. D 93, 114034 (2016). (3) S. Kumano, Qin-Tao Song, and O. V. Teryaev, Phys. Rev. D 97, 014020 (2018). (4) B. Z. Kopeliovich, Ivan Schmidt, and M. Siddikov, Phys. Rev. D 86, 113018 (2012). (5) B. Pire, L. Szymanowski, and J. Wagner, Phys. Rev. D 95, 114029 (2017). (6) S. Kumano, EPJ Web Conf. 208, 07003 (2019). (7) Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report, R. Abdul Khalek et al., arXiv:2103.05419, see Sec. 7.5.2, Neutrino physics.

Working group WG2

Primary authors: KUMANO, Shunzo (KEK); Prof. PETTI, Roberto (University of South Car- olina)

Presenter: KUMANO, Shunzo (KEK) Session Classification: WG 2

September 30, 2021 Page 57 NuFact 2021: The … / Report of Contributions The T2K Near Detector Upgrade

Contribution ID: 91 Type: not specified

The T2K Near Detector Upgrade Thursday, 9 September 2021 12:30 (20 minutes)

In view of the J-PARC program of upgrades of the beam intensity, the T2K collaboration is preparing towards an increase of the exposure aimed at establishing leptonic CP violation at 3 σ level for a significant fraction of the possible δCP values. To reach this goal, an upgrade of the T2K near detector ND280 will be installed at J-PARC in 2022, with the aim of reducing the overall statistical and systematic uncertainties at the appropriate level of better than 4\%. We have developed an innovative concept for this neutrino detection system, comprising the to- tally active Super-Fine-Grained-Detector (SuperFGD), two High Angle TPC (HA-TPC) and six TOF planes. The SuperFGD, a highly segmented scintillator detector, acting as a fully active target fortheneu- trino interactions, is a novel device with dimensions of ~2x1.8x0.6 m3 and a total mass of about 2 tons. It consists of about 2 millions of small scintillator cubes each of 1 cm3. The signal readout from each cube is provided by wavelength shifting fibers connected to MPPCs. The total number of channels will be ~60,000 and the cubes have already been produced and assembled in x − y layers. The HA-TPC will be used for 3D track reconstruction, momentum measurement and particle identification. These TPC, with overall dimensions of 2x2x0.8 m3, will be equipped with 32 resistive MicroMegas (ERAM). The thin field cage (3 cm thickness, 4% rad. length) will be realized with laminated panels of Aramid and honeycomb covered with a kapton foil with copper strips. The 34x42 cm2 resistive bulk Micromegas will use a 500 kOhm/square DLC foil to spread the charge over the pad plane, each pad being ~1 cm2. The electronics is based on the AFTER chips. The time-of-flight (TOF) will consist of 6 planes with about 5 m2 surface area surrounding the SuperFGD and the TPCs. Each plane has been assembled with 2.2 m long cast plastic scintillator bars with light collected by arrays of large-area MPPCs from two ends.

In this talk we will report on the status of the construction of these detectors and their performances obtained in test beams.

Working group WG6

Primary author: GIGANTI, Claudio (LPNHE Paris (IN2P3/CNRS)) Presenter: TZANOV, Martin Mihaylov (Louisiana State University (US)) Session Classification: WG6

September 30, 2021 Page 58 NuFact 2021: The … / Report of Contributions Physics studies for ND280 upgrade …

Contribution ID: 92 Type: Poster

Physics studies for ND280 upgrade in T2K experiment

Neutrino oscillation physics has now entered the precision era. In parallel with needing larger detectors to collect more data with, future experiments further require a significant reduction of systematic uncertainties with respect to what is currently available. In the neutrino oscillation measurements from the T2K experiment the systematic uncertainties related to neutrino interaction cross sections are currently the most dominant. To reduce this uncertainty a much improved understanding of neutrino-nucleus interactions is required. In particular, it is crucial to better understand the nuclear effects which can alter the final state topology and kinematicsof neutrino interactions in such a way which can bias neutrino energy reconstruction and therefore bias measurements of neutrino oscillations. The upgraded ND280 near detector of T2K will directly confront our naivety of neutrino interactions using a new detector configuration with full polar angle acceptance and a much lower proton tracking threshold. Furthermore, neutron tagging capabilities in addition to precision timing information will allow the upgraded detector to estimate neutron kinematics from neutrino interactions. Such improvements permit access to a much larger kinematic phase space which correspondingly allows techniques such as the analysis of transverse kinematic imbalances (TKI) to offer remarkable constraints of the pertinent nuclear physics for T2K analyses. In this talk we quantitatively demonstrate ND280’s upgraded sensitivity to key nuclear effects such as removal energy and 2p2h. To this end, we present a fitofaparam- eterised interaction and flux model to simulated measurements of TKI and neutrino energy from the upgraded ND280.

Working group WG2

Primary author: NGUYEN, Viet (LPNHE Paris (IN2P3/CNRS)) Presenter: NGUYEN, Viet (LPNHE Paris (IN2P3/CNRS)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 59 NuFact 2021: The … / Report of Contributions JUNO’s prospects for determining …

Contribution ID: 93 Type: Oral

JUNO’s prospects for determining the neutrino mass ordering Thursday, 9 September 2021 16:00 (15 minutes)

The flagship measurement of the JUNO experiment is the determination of the neutrino massor- dering. Here we revisit the prospects of the JUNO experiment to make this determination by 2030, using the current global knowledge of the relevant neutrino parameters as well as current information on the reactor configuration and the critical parameters of the JUNO detector. We pay particular attention to the non-linear detector energy response. Using the measurement of θ13 from Daya Bay, but without information from other experiments, we estimate the probably of JUNO determining the neutrino mass ordering at 3 or more sigma to be \%. 2 2 | 2 | After a couple of years operation, JUNO will improve our knowledge of sin θ12, ∆m21 and ∆mee , this will allow an updated estimate of JUNO’s probability of determining the neutrino mass ordering.

Working group WG1

Primary authors: PARKE, Stephen (Fermi National Accelerator Lab. (US)); TERNES, Christoph An- dreas (INFN, Sezione di Torino); VANEGAS FORERO, David (Universidad de Medellín); ZUKANOVICH FUNCHAL, renata (Universidade de São Paulo)

Presenter: TERNES, Christoph Andreas (INFN, Sezione di Torino) Session Classification: WG 1

September 30, 2021 Page 60 NuFact 2021: The … / Report of Contributions Neutrino Tagging

Contribution ID: 94 Type: Poster

Neutrino Tagging

The recent technological progresses in silicon pixel detectors are opening new avenues forac- celerator based neutrino experiments. Indeed, at neutrino beams, these detectors could allow to track all beam charged particles. Such information would allow to reconstruct individually all the π± → µ±ν decays which is the major source of beam neutrinos. As a results, the flavour and chirality of each of these neutrinos will be known, and, using the decay kinematics, the neutrinos direction and energy will be determined precisely. These tag-neutrinos could then be individually associated to the neutrinos interacting in thedetec- tor, using time and space coincidence. This association would allow to perform physics analyses with unprecedented energy resolutions and reduced systematic uncertainties which would dramatically change the reach of both short and long base line experiments.

The contribution will report on the feasibility of this technique based on simulations. It willalso report on the on-going experimental demonstration of the neutrino tagging at CERN. Finally, it will present a case study for a long base line tagged neutrino experiment from the U70 accelerator complex in Protvino, Russia, to the KM3NeT-ORCA neutrino telescope and its potential to measure precisely the leptonic CP violating phase.

Working group WG6

Primary author: PERRIN-TERRIN, Mathieu (Centre National de la Recherche Scientifique (FR))

Presenter: PERRIN-TERRIN, Mathieu (Centre National de la Recherche Scientifique (FR)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 61 NuFact 2021: The … / Report of Contributions Heavy Neutrinos at Future Linear …

Contribution ID: 95 Type: Poster

Heavy Neutrinos at Future Linear e+e- Colliders

With the Standard Model being unable to describe the observed baryon asymmetry or dark matter density in the universe, many models of the New Physics introduce heavy neutrino species as a possible explanation for these effects. Dirac or Majorana neutrinos with masses above the EW scale could be produced at future linear e+e- colliders, like the Compact LInear Collider (CLIC) or the International Linear Collider (ILC). We studied the possibility of observing production and decays of heavy neutrinos in qql final state at the ILC running at 500 GeV and 1 TeV and the CLIC running at 3 TeV. The analysis is based on the WHIZARD event generation and fast simulation ofthe detector response with DELPHES. Dirac and Majorana neutrinos with masses from 200 GeV to 3.2 TeV are considered. Estimated limits on the production cross sections and on the neutrino-lepton coupling are compared with the current limits coming from the LHC running at 13 TeV, as well as the expected future limits from hadron colliders. Impact of the gamma-induced backgrounds on the experimental sensitivity is also discussed. Obtained results are stricter than any other limit estimates published so far.

Working group WG5

Primary author: Mr MEKALA, Krzysztof (University of Warsaw) Co-authors: ZARNECKI, Aleksander Filip (University of Warsaw); REUTER, Jürgen (DESY Ham- burg, Germany); BRASS, Simon (DESY) Presenter: Mr MEKALA, Krzysztof (University of Warsaw) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 62 NuFact 2021: The … / Report of Contributions Low emittance muon beam in the…

Contribution ID: 96 Type: Poster

Low emittance muon beam in the 2 to 40 GeV energy range for muon and neutrino experiments

I present a scheme to obtain a 2 to 40 GeV low emittance muon beam, not requiring cooling and within today’s technological resources, to be used for early commissioning of muon accelerator projects, or alternatively dedicated muon and neutrino parameter measurements. In particular, a muon rate of 5x10^4 mu/s in a normalized transverse emittance of 5 um at 22 GeV, and energy spread of 1 GeV obtained from O(10^11) e+/s on target at 44 GeV. This emittance is below the expected results of advanced emittance cooling techniques for muons produced from protons- on-target, and represents an alternative for the duration of complete muon cooling studies. The scheme has beam designed to adjust the muon beam energy in the GeV energy range to the needs for precise parameter measurements of muons and neutrinos. Although the rate is small compared to other muon sources, it does not seem to represent a big limitation for its usage. Furthermore, the muon rate could be in principle increased proportionally to the availability of higher positron rates, already foreseen for future collider projects.

Working group WG3

Presenter: BLANCO GARCIA, Oscar (LNF) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 63 NuFact 2021: The … / Report of Contributions Study of tau neutrino production w …

Contribution ID: 97 Type: Oral

Study of tau neutrino production with nuclear emulsion at CERN-SPS Wednesday, 8 September 2021 15:20 (18 minutes)

The data on tau neutrino is very scarce, only a few experiments have detected its interactions. At FNAL beam dump experiment DONUT, tau neutrino interaction cross-section was directly measured with a large systematical (~50%) and statistical (~30%) errors. The main source of systematical error is due to a poor knowledge of the tau neutrino flux. The effective way for tau neutrino production is the decay of Ds mesons, produced in proton-nucleus interactions. The DsTau experiment at CERN-SPS has been proposed to measure an inclusive differential cross-section of a Ds production with a consecutive decay to tau lepton in p-A interactions. The goal of experiment is to reduce the systematic uncertainty to 10% level. A precise measurement of the tau neutrino cross section would enable a search for new physics effects such as testing the Lepton Universality (LU) of Standard Model in neutrino interactions. The detector is based on nuclear emulsion providing a sub-micron spatial resolution for the detection of short length and small “kink” decays. Therefore, it is very suitable to search for peculiar decay topologies (“double kink”) of Ds→τ →X. After successful pilot runs and data analysis, CERN had approved the DsTau project as a new experiment NA65 in 2019. During the physics runs, 2.3×108 proton interactions will be collected in the tungsten target, and about 103 Ds→τ decays will be detected. In this talk, the results from the pilot run will be presented and the prospect for physics runs in 2021-2022 will be given.

Working group WG2

Primary authors: DSTAU COLLABORATION; GULER, Murat Ali (Middle East Technical Univer- sity (TR)); Dr SATO, Osamu (Nagoya University) Presenter: Dr SATO, Osamu (Nagoya University) Session Classification: WG 2

September 30, 2021 Page 64 NuFact 2021: The … / Report of Contributions MicroBooNE’s Search for a …

Contribution ID: 99 Type: Oral

MicroBooNE’s Search for a Photon-Like Low Energy Excess Tuesday, 7 September 2021 16:22 (22 minutes)

MicroBooNE is a Liquid Argon Time Projection Chamber detector that has been taking data since 2015. One of its primary goals is to investigate the unexplained excess of electromagnetic events in the lowest energy ranges observed in the same neutrino beamline in the MiniBooNE experiment. While one leading interpretation of this anomaly is electron neutrino appearance due to sterile neutrino oscillations, a viable Standard Model explanation is neutrino-induced single photon events. The MicroBooNE single photon analysis looks to test this interpretation by measuring therate of neutrino-induced resonant neutral current (NC) delta baryon production and subsequent delta radiative decay with a single photon in the final state, NC ∆ → Nγ. This search for a process that has never been observed before in neutrino scattering is projected to improve upon the current experimental limit from T2K by greater than a factor of thirty. This talk will present the status of the MicroBooNE single photon analysis and the outlook for subsequent measurements.

Working group WG1

Primary author: MICROBOONE COLLABORATION, MicroBooNE Collaboration Presenter: SUTTON, Kathryn (Columbia University) Session Classification: WG 1 + WG 5 (WG1 zoom)

September 30, 2021 Page 65 NuFact 2021: The … / Report of Contributions First Measurement of Differential …

Contribution ID: 101 Type: Poster

First Measurement of Differential Charged Current Quasi-Elastic-Like Muon Neutrino Argon Scattering Cross Sections with the MicroBooNE Detector

Current and future generation neutrino oscillation experiments aim towards a high-precision measurement of the oscillation parameters, which requires an unprecedented understanding of neutrino-nucleus scattering. Charged-current quasi-elastic (CCQE) scattering is the process in which the neutrino produces a charged lepton and removes a single intact nucleon from the nucleus without producing any additional particles. For existing and forthcoming accelerator–based neutrino experiments, CCQE interactions are either the dominant process or part of the signal. MicroBooNE is the first liquid argon time projection chamber (LArTPC) commissioned as partof the Short Baseline Neutrino (SBN) program at Fermilab and its excellent particle reconstruction capabilities allow the detection of neutrino interactions using exclusive final states, which will play a crucial role in the success of future kiloton LArTPC detectors such as DUNE. This talk will present the first measurement of exclusive νμ -Ar CCQE–like flux integrated total and differential cross sections using single proton knock–out interactions recorded by the MicroBooNE LArTPC detector, which has comparable acceptance to deuterium Bubble Chambers.

Working group WG2

Primary author: PAPADOPOULOU, Afroditi (Massachusetts Institute of technology) Presenter: PAPADOPOULOU, Afroditi (Massachusetts Institute of technology) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 66 NuFact 2021: The … / Report of Contributions Extraction of the Inclusive Muon N …

Contribution ID: 102 Type: Poster

Extraction of the Inclusive Muon Neutrino Charged Current Cross Section at MicroBooNE

The MicroBooNE detector has an active mass of 85 tons of liquid argon and is located alongthe Booster Neutrino Beam (BNB) at Fermilab. It has a rich physics program including the search for a low-energy excess observed at MiniBooNE and measurements of neutrino-Argon interaction cross sections. In this talk, we present a procedure, using the Wiener-SVD unfolding method, to extract the nominal neutrino flux-averaged total and differential cross sections of the inclusive muon neutrino charged-current interaction on argon. This procedure relies on a minimal setof assumptions while maximizing the power in comparing data results with predictions from theory and event generators. Taking advantage of the excellent resolution of a Liquid Argon Time Pro- jection Chamber (LArTPC) and the Wire-Cell tomographic event reconstruction paradigm, this procedure enables a new round of cross section measurements at MicroBooNE.

Working group WG2

Primary author: GU, Wenqiang (Brookhaven National Laboratory (US)) Presenter: GU, Wenqiang (Brookhaven National Laboratory (US)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 67 NuFact 2021: The … / Report of Contributions Neutrino interaction modelling an …

Contribution ID: 103 Type: Oral

Neutrino interaction modelling and uncertainties for T2K analyses Wednesday, 8 September 2021 16:00 (18 minutes)

In order to achieve the ambitious goal of characterising neutrino flavour oscillations with percent- level precision, it is critical for current and future long-baseline neutrino oscillation experiments to substantially reduce existing systematic uncertainties. The most impactful these uncertainties stem from the challenges of modelling few-GeV neutrino-nucleus interactions. In order to confront this challenge, the T2K experiment’s Neutrino Interaction Working Group (NIWG) aims to implement up to date theoretical models in T2K’s Monte-Carlo event generator (NEUT); to define a suitable parametrisation of the model’s uncertainties as an input for neutrino oscillation analyses; and to constrain these parameters using global lepton and hadron scattering data.

In this talk we present the latest uncertainty model from T2K’s NIWG as well as a comparison of the model to available data. Among other improvements, the latest model includes: a parametrisation offering substantial freedom to the input Spectral Function for charged-current quasi-elastic (CCQE) interactions; a momentum transfer dependent correction to the nuclear removal energy for CCQE interactions based on inclusive electron scattering data; and an updated treatment of nuclear medium effects in resonant pion production interactions.

Working group WG2

Primary author: Dr WRET, Clarence (University of Rochester) Co-author: Dr DOLAN, Stephen (CERN) Presenter: Dr WRET, Clarence (University of Rochester) Session Classification: WG1+WG2 (WG1 zoom)

September 30, 2021 Page 68 NuFact 2021: The … / Report of Contributions Combined neutrino and antineutri …

Contribution ID: 104 Type: Oral

Combined neutrino and antineutrino charged current cross section measurement on carbon with zero final state pions in the T2K near detector complex Thursday, 9 September 2021 12:58 (18 minutes)

T2K is a long baseline neutrino oscillation experiment, located in Japan. A muon (anti)neutrino beam peaked at 600 MeV is produced in the J-PARC facility and measured by near detectors and the Super-Kamiokande far detector. The main goal is to measure the neutrino oscillation parameters. T2K can run in both neutrino and antineutrino mode, enhancing the sensitivity to charge-parity violation (CPV) in the lepton sector. Measuring oscillation parameters requires precise knowledge of the (anti)neutrino interaction cross sections.

We present an improved cross section analysis which utilizes combined data samples of multiple detectors and in multiple beam configurations, the first of its kind. It will be used tomeasure the muon neutrino and antineutrino cross sections on carbon with no final state pions. This technique fully exploits the correlations between the samples’ systematic uncertainties, allowing for their efficient cancellation. Since the two utilized T2K near detectors sample different neutrino energy spectra, this measurement will allow to better understand the energy dependence of neutrino interactions, thereby offering a direct probe of the physics that are responsible for the largest uncertainties in T2K oscillation analyses. In addition, by measuring both neutrino and antineutrino cross sections, it is possible not only to better tune theoretical models of nuclear effects such as multinucleon interactions, but alsotoprop- erly understand the asymmetry between neutrino and antineutrino interactions, the latter being of fundamental importance for CPV experiments that measure the asymmetry between neutrino and antineutrino oscillation rates.

Working group WG2

Primary author: SCHLOESSER, Caspar Maria (ETH Zurich (CH)) Presenter: SCHLOESSER, Caspar Maria (ETH Zurich (CH)) Session Classification: WG 2

September 30, 2021 Page 69 NuFact 2021: The … / Report of Contributions Muon Ionization Cooling Experim …

Contribution ID: 105 Type: not specified

Muon Ionization Cooling Experiment (MICE): Results & Prospects Thursday, 9 September 2021 14:20 (30 minutes)

A high-energy muon collider could be the most powerful and cost-effective collider approach in the multi-TeV regime, and a neutrino source based on decay of an intense muon beam would be ideal for measurement of neutrino oscillation parameters. Muon beams may be created through the decay of pions produced in the interaction of a proton beam with a target. The muons are subsequently accelerated and injected into a storage ring where they decay producing a beam of neutrinos, or collide with counter-rotating antimuons. Cooling of the muon beam would enable more muons to be accelerated resulting in a more intense neutrino source and higher collider luminosity. Ionization cooling is the novel technique by which it is proposed to cool the beam. The Muon Ionization Cooling Experiment collaboration has constructed a section of an ionization cooling cell and used it to provide the first demonstration of ionization cooling. Here the observation of ionization cooling is described. The cooling performance is studied for a variety of beamand magnetic field configurations. The future outlook for muon ionization cooling demonstrations is discussed.

Working group WG3

Primary author: PALLADINO, Vittorio (Universita e sezione INFN di Napoli (IT)) Presenter: ROGERS, Chris (STFC) Session Classification: WG 3

September 30, 2021 Page 70 NuFact 2021: The … / Report of Contributions Normalized Transverse Emittance …

Contribution ID: 107 Type: not specified

Normalized Transverse Emittance Reduction via Ionization Cooling in MICE ’Flip Mode’ Thursday, 9 September 2021 14:50 (20 minutes)

Low emittance muon beams are central to the development of a Muon Collider and cansignifi- cantly enhance the performance of a Neutrino Factory. The international Muon Ionization Cooling Experiment (MICE) has recorded several million individual muon tracks passing through a liquid hydrogen or a lithium hydride absorber and has demonstrated the ionization cooling of muon beams. Previous analysis used a restricted data set, and the beam matching was not perfect. In this analysis, beam sampling routines were employed to account for imperfections in beam matching at the entrance into the cooling channel and enable an improvement of the cooling measurement. A study of the normalized transverse emittance change in the MICE cooling channel set upina flipped polarity magnetic field configuration is presented. Additionally, the evolution ofthecanon- ical angular momentum across the absorber is shown and the characteristics of the cooling effect are discussed.

Working group WG3

Primary authors: JURJ, paul (Imperial College London); PALLADINO, Vittorio (Universita e sezione INFN di Napoli (IT))

Presenter: PASTERNAK, Jaroslaw (Imperial College, London) Session Classification: WG 3

September 30, 2021 Page 71 NuFact 2021: The … / Report of Contributions Analysis of Multiple Coulomb Scat …

Contribution ID: 108 Type: not specified

Analysis of Multiple Coulomb Scattering of Muons in the MICE Liquid H2 Absorber Thursday, 9 September 2021 15:10 (20 minutes)

It is anticipated that high brightness muon beams will be needed primarily in two types of accelerators, a muon collider and a neutrino factory. The primary challenge posed by using muons for the working particle of an accelerator complex, and the reason they have not been used extensively, is the muon’s short life-time (2.2μs at rest) and the relatively long cooling periods required by conventional beam cooling techniques. The Muon Ionization Cooling Experiment (MICE) is a multi-national accelerator physics initiative which has demonstrated Ionization Cooling (IC); a new, rapid beam-cooling technique suitable for the short-lived muon. The performance of IC depends on two key processes - energy loss due to collisional ionization, and Multiple Coulomb Scattering (MCS) - for which accurate models are crucial in parametrizing the method and enabling quantitative design of future muon accelerators. Experimental measurements of MCS of positive straight-track muons with momenta in the range 170-240 MeV/c in liquid H2 are reported in this study.

Working group WG3

Primary author: PALLADINO, Vittorio (Universita e sezione INFN di Napoli (IT)) Presenter: CHATZITHEODORIDIS, Gavriil (University of Strathclyde) Session Classification: WG 3

September 30, 2021 Page 72 NuFact 2021: The … / Report of Contributions The DUNE Photon Detection System

Contribution ID: 109 Type: Poster

The DUNE Photon Detection System

DUNE is an underground neutrino oscillation experiment that will be performing precision measurements of the PMNS matrix to determine unambiguously the mass ordering and the leptonic CP violation. It also comprises a rich non-accelerator physics program for the detection of supernova neutrinos, nucleon decay, and BSM physics. DUNE employs a high-power neutrino beam under construction at Fermilab together with the DUNE Near Detector, and four Liquid Argon TPCs (Far Detector) that will be installed at the Sanford Underground Research Facility in South Dakota, 1300 km away from the neutrino source. The photon detection system (PDS) – which records the 128 nm scintillation light ofargonand provides the time of interaction of the beam neutrinos in the Far Detector - is critical for studying nucleon decay and detecting Supernove Neutrino Bursts. The PDS also complements the calorimetric measurement performed by the TPC (i.e. the charge readout) and contributes to the energy calibration and time performance of the Far Detector.

In the talk, we will overview the design of the Photon Detection System for the first DUNE far detector module, with special emphasis on VUV light trapping in a cryogenic environment, its technical challenges, and the expected physics performance. We will also discuss the status of the construction of the PDS and its validation in the Run II of ProtoDUNE-SP.

Working group WG1

Primary author: FALCONE, Andrea (Universita e INFN, Padova (IT)) Presenter: FALCONE, Andrea (Universita e INFN, Padova (IT)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 73 NuFact 2021: The … / Report of Contributions Parametrising CCQE uncertainties …

Contribution ID: 110 Type: Oral

Parametrising CCQE uncertainties in the Spectral Function model for neutrino oscillation analyses Wednesday, 8 September 2021 16:18 (18 minutes)

A substantial fraction of systematic uncertainties in neutrino oscillation experiments stems from the lack of precision in modeling the nucleus when describing the neutrino-nucleus interactions. The Spectral Function (SF) model features a distribution of momenta and removal energies ofnu- cleons inside the nucleus within the shell-model picture, and also accounts for short-range correlations between nucleons. These characteristics offer significant improvements with respect to the more commonly used Fermi gas-based models. Electron scattering experiments offer a precise probe of the structure of the nucleus and have been used to both construct and validate the SF model. SF is thus an interesting reference model for long baseline neutrino experiments.

Based on constraints from electron scattering data, we develop a set of parameters that can alter the occupancy of the nuclear shells and the distribution of the nucleon momentum within each shell. In addition, the contribution of short-range correlations and the effect of Pauli blocking can also be modified. In this talk, we will first present the impact these parameters have on several observables from quasi-elastic-like interactions, such as the transverse momentum imbalance or the muon momentum and direction. We then show fits of these parameters to available T2K and MINERvA cross-section data and discuss how they can be used to constrain the systematic uncertainties related to the SF model in neutrino oscillation analyses.

Working group WG2

Primary authors: CHAKRANI, Jaafar (Laboratoire Leprince-Ringuet (LLR)); BUIZZA AVANZINI, Margherita (Laboratoire Leprince-Ringuet (LLR)); Dr DOLAN, Stephen (CERN) Presenter: CHAKRANI, Jaafar (Laboratoire Leprince-Ringuet (LLR)) Session Classification: WG1+WG2 (WG1 zoom)

September 30, 2021 Page 74 NuFact 2021: The … / Report of Contributions First results from the ARTIE exper …

Contribution ID: 111 Type: Oral

First results from the ARTIE experiment Tuesday, 7 September 2021 16:00 (20 minutes)

A measurement of the transmission coefficient for neutrons through a thick(∼ 3 atoms/b) liquid natural argon target in the energy range 30-70 keV was performed by the Argon Resonance Transmission Interaction Experiment (ARTIE) using a time of flight neutron beam at Los Alamos National Laboratory. In this energy range theory predicts an anti-resonance in the 40Ar cross section near 57 keV, but the existing data, coming from an experiment performed in the 90s (Win- ters. et al.), does not support this. This discrepancy gives rise to significant uncertainty inthe penetration depth of neutrons through liquid argon, an important parameter for next generation neutrino and dark matter experiments. In this talk, the first results from the ARTIE experiment will be presented. The ARTIE measurement of the total cross section as a function of energy confirms the existence of the anti-resonance near 57 keV, but not as deep as the theory prediction. This measurement is important for the Deep Underground Neutrino Experiment since it could allow a viable means of calibration and a deeper understanding of signals and backgrounds for the neutrino science program.

Working group WG2

Primary authors: PANTIC, Emilija (UC Davis); PAGANI, Luca (University of California Davis ); WANG , Jingbo; ERJAVEC , Tyler; PICKARD, Leon; ANDRINGA, Sofia; BEZAWADA, Yash- wanth; HUANG, Junying; HE, Julie; MULHEARN, Michael; SVOBODA, Robert; ULLMANN, John

Presenter: PANTIC, Emilija (UC Davis) Session Classification: WG 2 + WG 6 (WG2 zoom)

September 30, 2021 Page 75 NuFact 2021: The … / Report of Contributions Measuring the proton Zemach rad …

Contribution ID: 112 Type: Poster

Measuring the proton Zemach radius with the FAMU experiment at RIKEN RAL RIKEN-RAL

The FAMU (Fisica degli Atomi Muonici) experiment has the goal to measure precisely theproton Zemach radius, with incoming low energy muons. It will contribute to precision tests of QED and may contribute to shed more light on the so-called proton radius “puzzle”, by studying the electromagnetic structure of the proton and muon nucleon interactions. To this aim, the FAMU experiment makes use of a high-intensity pulsed muon beam at RIKEN-RAL impinging on a cryogenic hydrogen target with an high-Z gas admixture and a tunable mid-IR high power laser, to measure the hyperfine (HFS) splitting of the 1S state of the muonic hydrogen. From the value of the exciting laser frequency, the energy of the HFS transition may be derived with high precision ( 10^-5 ) and thus, via new refined QED calculations, the Zemach radius of the proton. The experimental signature of the process will be the emission of characteristic X-rays from the de-excitation of the high-Z muonic atoms formed when the muon is transferred from p to Z in the cryogenic target. Preliminary studies have provided indications on the most suitable high-Z elements to be used and validated the experimental method and apparatus. The experimental apparatus includes a system of precise fiber-SiPM beam hodoscopes, a crown of 1” LaBr3 crystals read by photomultipliers complemented by additional 1/2” LaBr3 crystals read by SiPM arrays with temperature control and a few HPGe detectors for detection of the emitted characteristic X-rays around 100 keV . The system is in condition to detect the signal in a noisy environment and has been used for preliminary runs. The experimental apparatus and the innovative method to determine the Zemach proton radius with high precision will be described in detail.

Working group WG4

Primary author: BONESINI, Maurizio (Sezione INFN Milano Bicocca) Presenter: BONESINI, Maurizio (Sezione INFN Milano Bicocca) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 76 NuFact 2021: The … / Report of Contributions Recent neutrino cross-section resu …

Contribution ID: 113 Type: Oral

Recent neutrino cross-section results from MicroBooNE Wednesday, 8 September 2021 14:20 (20 minutes)

MicroBooNE is a liquid argon time projection chamber that operates in the Booster Neutrino Beam at Fermilab. The detector provides high-resolution imaging of neutrino interactions with alow threshold and full angular coverage. Thanks to a high event rate and several years of continuous operation, the MicroBooNE collaboration has obtained the world’s largest dataset of neutrino- argon scattering events. A detailed understanding of these interactions, especially the impact of nuclear physics effects, will be critical to the success of future precision neutrino oscillation efforts, particularly the argon-based Deep Underground Neutrino Experiment (DUNE) andthe Short-Baseline Neutrino (SBN) program. This talk presents some of the latest neutrino-argon cross section measurements in MicroBooNE: new measurements of the inclusive electron neutrino and muon neutrino cross sections, a new measurement of the eta production cross section, and progress towards a measurement of lambda baryon production in muon antineutrino interactions.

Working group WG2

Primary author: Dr GRAMELLINI, Elena (Fermilab ) Presenter: Dr GRAMELLINI, Elena (Fermilab ) Session Classification: WG 2

September 30, 2021 Page 77 NuFact 2021: The … / Report of Contributions MEG II experiment status and pro …

Contribution ID: 114 Type: Oral

MEG II experiment status and prospect Tuesday, 7 September 2021 16:00 (30 minutes)

The MEG II experiment at Paul Scherrer Institute (PSI) in Switzerland aims to achieve a sensitivity of 6 × 10−14 on the charged lepton flavor violating decay µ → eγ. The current upper limit on this decay is 4.2 × 10−13 at 90 % C.L., set by the first phase of MEG. This limit was set using the PSI muon beam at a reduced intensity, 3 × 107 µ+/s, to keep the background at a manageable level. The upgraded detectors in MEG II can cope with a higher intensity, thus the experiment is expected to run with a 7 × 107 µ+/s beam. The new low mass, single volume, high granularity tracker, together with a new highly segmented timing counter, guarantees better resolutions for the positron detection. Moreover, the replacement of the old PMTs with MPPCs in the inner face of the liquid Xenon calorimeter improved the photon detection. We will present the details of the upgraded detectors, including their performances calculated from the data collected in the past years. We will also discuss the latest results from last year pre-engineering run and the perspective for the 2021 run, the first with all the detectors and electronics installed.

Working group WG4

Primary author: MEUCCI, Manuel (INFN - National Institute for Nuclear Physics) Presenter: MEUCCI, Manuel (INFN - National Institute for Nuclear Physics) Session Classification: WG 4

September 30, 2021 Page 78 NuFact 2021: The … / Report of Contributions Status of the search for light sterile …

Contribution ID: 115 Type: Poster

Status of the search for light sterile neutrinos at short baselines

From the discovery of the neutrino to the measurement of the last of the neutrino mixing parameters, nuclear reactors have proved indispensable in the study of these particles, of which much remains to be unveiled. Recent and past measurements using reactor neutrinos rely on the prediction of their spectrum, a non-trivial exercise involving ad- hoc methods and carefully selected assumptions. A discrepancy between predicted and measured fluxes at a short distance from reactors, known as reactor antineutrino anomaly, arose in 2011, prompting the birth of new experiments aiming to study neutrino oscillation at a very short baseline. Such anomaly can be in fact explained invoking the existence of a new sterile neutrino at the eV mass scale that participate in the neutrino mixing, an enticing hypothesis that ties to other anomalies already observed in the neutrino sector and opens a door for physics beyond the Standard Model. The speaker will present an overview of the most recent experimental results on the search for reactor neutrino oscillation at very short baseline, and their implication in our current understanding of the reactor antineutrino anomaly and the sterile neutrino hypothesis.

Working group WG5

Primary author: Dr MINOTTI, Alessandro (Universita & INFN, Milano-Bicocca (IT)) Presenter: Dr MINOTTI, Alessandro (Universita & INFN, Milano-Bicocca (IT)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 79 NuFact 2021: The … / Report of Contributions Measuring the proton-argon cross- …

Contribution ID: 116 Type: Poster

Measuring the proton-argon cross-section at ProtoDUNE-SP

The Deep UndergroundNeutrino Experiment (DUNE) is a next generation long-baseline neutrino experiment hosted by the Fermilab. DUNE will be able to unambiguously determine the neutrino mass hierarchy and measure the value of the CP-violating phase. The single-phase liquid argon far-detector prototype (ProtoDUNE-SP) at the CERN neutrino platform serves as a prototype to validate the technology for the 10-kton fiducial mass liquid argon detectors for the DUNE experiment.

The primary physics goal of ProtoDUNE-SP is to measure the hadron-argon cross-sections toun- precedented precision. ProtoDUNE-SP was exposed to a variety of test-beam particles (protons, pions, kaons, muons, and electrons) in a broad range of momenta (from 0.3 - 7 GeV/c). ProtoDUNE- SP has successfully collected over 4 million high-quality beam events. This provides rich data to study the hadron-argon interactions in a liquid argon detector. In this talk, I will present our progress on the proton-argon cross-section measurement, including the selection of beam protons, energy calibration, and the preliminary result of the proton-argon cross-section.

Working group WG1

Primary author: Dr LIAO, Heng-Ye (Kansas State University (US)) Presenter: Dr LIAO, Heng-Ye (Kansas State University (US)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 80 NuFact 2021: The … / Report of Contributions Involving the new generations in F …

Contribution ID: 117 Type: not specified

Involving the new generations in Fermilab future endeavours

Since 1984 the Italian groups of the Istituto Nazionale di Fisica Nucleare (INFN) and Italian Uni- versities, collaborating with the DOE laboratory of Fermilab (US) have been running a two-month summer training program for Italian university students. While in the first year the program involved only four physics students of the University of Pisa, in the following years it was extended to engineering students. This extension was very successful and the engineering students have been since then extremely well accepted by the Fermilab Technical, Accelerator and Scientific Comput- ing Division groups. Over the many years of its existence, this program has proven to be the most effective way to engage new students in Fermilab endeavors. Many students have extended their collaboration with Fermilab with their Master Thesis and PhD. Since 2004 the program has been supported in part by DOE in the frame of an exchange agreement with INFN. An additional agreement for sharing support for engineers of the School of Advanced Studies of S.Anna (SSSA) of Pisa was established in 2007 between SSSA and Fermilab. In the frame of this program four SSSA students are supported each year. Over its 35 years of history, the program has grown in scope and size and has involved more than 500 Italian students from more than 20 Italian Universities, Since the program does not exclude appropriately selected non-italian students, a handful of students of European and non-European Universities were also accepted in the years. Each intern is supervised by a Fermilab Mentor responsible for performing the training program. Training programs spanned from Tevatron, CMS, Muon (g-2), Mu2e and SBN design and experimental data analysis, development of particle detectors (silicon trackers, calorimeters, drift chambers, neutrino and dark matter detectors), design of electronic and accelerator components, development of infrastructures and software for tera-data handling, research on superconductive elements and on accelerating cavities, theory of particle accelerators. Since 2010, within an extended program supported by the Italian Space Agency and the Italian National Institute of Astrophysics, a total of 30 students in physics, astrophysics and engineering have been hosted for two months in summer at US space science Research Institutes and laboratories. In 2015 the University of Pisa included these programs within its own educational programs. Ac- cordingly, Summer School students are enrolled at the University of Pisa for the duration of the internship and are identified and ensured as such. At the end of the internship the students arere- quired to write summary reports on their achievements. After positive evaluation by a University Examining Board, interns are acknowledged 6 ECTS credits for their Diploma Supplement. Information on student recruiting methods, on training programs of recent years and on final student‘s evaluation process at Fermilab and at the University of Pisa will be given in the presentation.

Working group Diversity, Education and Outreach

Primary author: DONATI, Simone (University of Pisa and Istituto Nazionale di Fisica Nucle-

September 30, 2021 Page 81 NuFact 2021: The … / Report of Contributions Involving the new generations in F … are)

Presenter: DONATI, Simone (University of Pisa and Istituto Nazionale di Fisica Nucleare) Session Classification: Special session

September 30, 2021 Page 82 NuFact 2021: The … / Report of Contributions Development, construction and qu …

Contribution ID: 118 Type: Poster

Development, construction and qualification tests of the Mu2e electromagnetic calorimeter mechanical structures

The “muon-to-electron conversion” (Mu2e) experiment at Fermilab will search for theCharged Lepton Flavour Violating neutrino-less coherent conversion of a muon into an electron in the field of an aluminum nucleus. The observation of this process would be the unambiguous evidence of physics beyond the Standard Model. Mu2e detectors comprise a straw-tracker, an electromagnetic calorimeter and an external veto for cosmic rays. The calorimeter provides excellent electron identification, complementary information to aid pattern recognition and track reconstruction, and a fast calorimetric online trigger. The detector has been designed as a state-of-the-art crystal calorimeter and employs 1340 pure Cesium Iodide (CsI) crystals readout by UV-extended silicon photosensors and fast front-end and digitization electronics. A design consisting of two identical annular matrices (named “disks”) positioned at the relative distance of 70 cm downstream the aluminum target along the muon beamline satisfies the Mu2e physics requirements. The hostile Mu2e operational conditions, in terms of radiation levels (total ionizing doseof12 krad and a neutron fluence of 5x1010 n/cm2 @ 1 MeVeq (Si)/y), magnetic field intensity (1T)and vacuum level (10^-4 Torr) have posed tight constraints on the design of the detector mechanical structures and materials choice. The support structure of the two 670 crystal matrices employs two aluminum hollow rings and parts made of open-cell vacuum-compatible carbon fiber. The photosensors and service front-end electronics for each crystal are assembled in a unique mechanical unit inserted in a machined copper holder. The 670 units are supported by a machined plate made of vacuum-compatible plastic material. The plate also integrates the cooling system made of a network of copper lines flowing a low temperature radiation-hard fluid and placed in thermal contact with the copper holders to constitute a low resistance thermal bridge. The data acquisition electronics is hosted in aluminum custom crates positioned on the external lateral surface of the two disks. The crates also integrate the electronics cooling system as lines running in parallelto the front-end system. In this talk we will review the constraints on the calorimeter mechanical structures design, the development from the conceptual design to the specifications of all the structural components, including the mechanical and thermal simulations that have determined the materials and technological choices and the specifications of the cooling station, the status of components production, the components quality assurance tests, the detector assembly procedures, and the procedures for detector transportation and installation in the experimental area. We will also review the lessons learnt from Mu2e to inform the design of the upgraded Mu2e-II detector.

Working group WG6

Primary author: Dr PASCIUTO, Daniele (University of Pisa and Infn Pisa) Co-author: DONATI, Simone (University of Pisa and Istituto Nazionale di Fisica Nucleare) Presenter: Dr PASCIUTO, Daniele (University of Pisa and Infn Pisa)

September 30, 2021 Page 83 NuFact 2021: The … / Report of Contributions Development, construction and qu …

Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 84 NuFact 2021: The … / Report of Contributions Probing axion-like particles with r …

Contribution ID: 119 Type: Oral

Probing axion-like particles with reactor neutrino experiments Thursday, 9 September 2021 14:38 (18 minutes)

The current and next generation experiments looking for coherent elastic neutrino-nucleus scattering (CEvNS) and neutrino-electron scattering are a unique tool for exploring exotic neutrino physics via nuclear and electron recoil measurements. In this talk, I will discuss the potential of such experiments in opening new directions on rare event searches beyond the neutrino sector. In particular, I will present the projected sensitivities of reactor neutrino experiments regarding axion-like particle (ALP) searches with a special focus on the ALP-photon, ALP-electron and ALP- nucleon couplings.

Working group WG2

Primary authors: PAPOULIAS, Dimitrios (University of Ioannina); ARISTIZABAL, Diego (Uni- versidad Tecnica Federico Santa Maria (USM)); Dr FLORES, Luis (Universidad Nacional Autonoma de Mexico); DE ROMERI, Valentina (IFIC - Universidad de Valencia) Presenter: PAPOULIAS, Dimitrios (University of Ioannina) Session Classification: WG 2

September 30, 2021 Page 85 NuFact 2021: The … / Report of Contributions A Plan for Decay at Rest νe + Pb …

Contribution ID: 120 Type: Poster

A Plan for Decay at Rest νe + Pb Cross Section Measurement at J-PARC MLF; D@RveX

D@RveX stands for Decay at Rest νe + Pb Cross(X) section measurement. So far there has not been good low energy νe detection technique. Lead is expected to be an excellent low energy νe target because the cross section is expected to be very large and the delayed − coincidence technique can be used to reduce the backgrounds. If decay at rest νe +Pb → e +n+ Bi cross section is measured, it brings new possibilities to the future neutrino experiments, such as low energy νe oscillation measurements, flavor specific measurement of the supernova explosion νe and understanding of νe-nucleus interactions. We are preparing an experiment to measure the cross section, energy spectrum and direction of the emitted electron, at J-PARC MLF. The beam pulse is very narrow in time and the duty cycleis low at MLF, which help further to reduce the backgrounds significantly. In this presentation, we will explain about conceptual idea of the experiment and status of the preparation.

Working group WG6

Primary author: SUEKANE, Fumihiko (Tohoku Univ.) Presenter: SUEKANE, Fumihiko (Tohoku Univ.) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 86 NuFact 2021: The … / Report of Contributions Results from T2K

Contribution ID: 121 Type: not specified

Results from T2K Monday, 6 September 2021 12:40 (30 minutes)

Presenter: Dr RICCIO, Ciro (Stony Brook University (US)) Session Classification: Plenary

September 30, 2021 Page 87 NuFact 2021: The … / Report of Contributions Results from NOvA

Contribution ID: 122 Type: not specified

Results from NOvA Monday, 6 September 2021 13:10 (30 minutes)

Presenter: KAPLAN, Daniel (Illinois Institute of Technology) Session Classification: Plenary

September 30, 2021 Page 88 NuFact 2021: The … / Report of Contributions Status of DUNE

Contribution ID: 123 Type: not specified

Status of DUNE Monday, 6 September 2021 13:40 (30 minutes)

Working group

Presenter: YANG, Guang (Stony Brook University) Session Classification: Plenary

September 30, 2021 Page 89 NuFact 2021: The … / Report of Contributions Status of HyperK

Contribution ID: 124 Type: not specified

Status of HyperK Monday, 6 September 2021 14:25 (30 minutes)

Presenter: SAKASHITA, Ken (High Energy Accelerator Research Organization (JP)) Session Classification: Plenary

September 30, 2021 Page 90 NuFact 2021: The … / Report of Contributions Status of JUNO

Contribution ID: 125 Type: not specified

Status of JUNO Monday, 6 September 2021 14:55 (30 minutes)

Working group

Presenters: PAOLONI, Alessandro (INFN e Laboratori Nazionali di Frascati (IT)); PAOLONI, alessandro Session Classification: Plenary

September 30, 2021 Page 91 NuFact 2021: The … / Report of Contributions Results of global fits

Contribution ID: 126 Type: not specified

Results of global fits Monday, 6 September 2021 15:25 (30 minutes)

Presenter: SCHWETZ, Thomas (KIT) Session Classification: Plenary

September 30, 2021 Page 92 NuFact 2021: The … / Report of Contributions Towards (semi) exclusive cross sec …

Contribution ID: 127 Type: not specified

Towards (semi) exclusive cross section measurements and modeling Monday, 6 September 2021 16:05 (30 minutes)

Presenter: BARBARO, Maria Benedetta (Universita’ di Torino) Session Classification: Plenary

September 30, 2021 Page 93 NuFact 2021: The … / Report of Contributions Everything a neutrino experiment …

Contribution ID: 128 Type: not specified

Everything a neutrino experimentalist wants to ask the electron scattering community Monday, 6 September 2021 16:35 (30 minutes)

Working group

Presenter: WEINSTEIN, Lawrence (ODU) Session Classification: Plenary

September 30, 2021 Page 94 NuFact 2021: The … / Report of Contributions SBN and MicroBoone status and p …

Contribution ID: 129 Type: not specified

SBN and MicroBoone status and plans Monday, 6 September 2021 17:05 (30 minutes)

Presenters: BONESINI, Maurizio (Universita & INFN, Milano-Bicocca (IT)); BONESINI, Maurizio (Sezione INFN Milano Bicocca) Session Classification: Plenary

September 30, 2021 Page 95 NuFact 2021: The … / Report of Contributions Shallow and deep inelastic scattering

Contribution ID: 130 Type: not specified

Shallow and deep inelastic scattering Tuesday, 7 September 2021 14:20 (30 minutes)

Presenter: MORFIN, Jorge G. (Fermilab) Session Classification: Plenary

September 30, 2021 Page 96 NuFact 2021: The … / Report of Contributions Results from MINERvA

Contribution ID: 131 Type: not specified

Results from MINERvA Tuesday, 7 September 2021 14:50 (30 minutes)

Presenter: KORDOSKY, Michael (William and Mary) Session Classification: Plenary

September 30, 2021 Page 97 NuFact 2021: The … / Report of Contributions Status of ESSnuSB and summary of …

Contribution ID: 132 Type: not specified

Status of ESSnuSB and summary of workshop Tuesday, 7 September 2021 15:20 (30 minutes)

Presenter: KLICEK, Budimir (Ruder Boskovic Institute, Zagreb) Session Classification: Plenary

September 30, 2021 Page 98 NuFact 2021: The … / Report of Contributions PMT development for Hyper- …

Contribution ID: 133 Type: Oral

PMT development for Hyper-Kamiokande Tuesday, 7 September 2021 12:40 (30 minutes)

Working group

Presenter: BRONNER, Christophe Session Classification: Plenary

September 30, 2021 Page 99 NuFact 2021: The … / Report of Contributions Future near detectors

Contribution ID: 134 Type: not specified

Future near detectors Tuesday, 7 September 2021 13:10 (30 minutes)

Working group

Presenters: Mr TANAKA, Hirohisa A. (SLAC/Stanford University); TANAKA, Hirohisa (SLAC Na- tional Accelerator Laboratory (US)) Session Classification: Plenary

September 30, 2021 Page 100 NuFact 2021: The … / Report of Contributions Noble element detectors

Contribution ID: 135 Type: not specified

Noble element detectors Tuesday, 7 September 2021 13:40 (30 minutes)

Presenter: RESNATI, Filippo (CERN) Session Classification: Plenary

September 30, 2021 Page 101 NuFact 2021: The … / Report of Contributions Status of LBNF beam

Contribution ID: 136 Type: not specified

Status of LBNF beam Friday, 10 September 2021 12:40 (30 minutes)

Working group

Presenter: GOLLWITZER, Keith (Fermilab) Session Classification: Plenary

September 30, 2021 Page 102 NuFact 2021: The … / Report of Contributions The JPARC neutrino beam and up…

Contribution ID: 137 Type: not specified

The JPARC neutrino beam and upgrades Friday, 10 September 2021 13:10 (30 minutes)

Working group

Presenter: FRIEND, Megan (High Energy Accelerator Research Organization (JP)) Session Classification: Plenary

September 30, 2021 Page 103 NuFact 2021: The … / Report of Contributions High power targets

Contribution ID: 138 Type: not specified

High power targets Friday, 10 September 2021 13:40 (30 minutes)

Presenter: AMMIGAN, Kavin Session Classification: Plenary

September 30, 2021 Page 104 NuFact 2021: The … / Report of Contributions Results from the g-2 experiment

Contribution ID: 139 Type: not specified

Results from the g-2 experiment Friday, 10 September 2021 14:20 (30 minutes)

Presenter: CORRODI, Simon Session Classification: Plenary

September 30, 2021 Page 105 NuFact 2021: The … / Report of Contributions Lepton flavour physics in the neut …

Contribution ID: 140 Type: not specified

Lepton flavour physics in the neutrino and muon sector Friday, 10 September 2021 14:50 (30 minutes)

Working group

Presenter: DAVIDSON, Sacha (Centre National de la Recherche Scientifique (FR)) Session Classification: Plenary

September 30, 2021 Page 106 NuFact 2021: The … / Report of Contributions muon experiments searching for C …

Contribution ID: 141 Type: not specified

muon experiments searching for CLFV Friday, 10 September 2021 15:20 (30 minutes)

Presenter: HESKETH, Gavin (University College London (UK)) Session Classification: Plenary

September 30, 2021 Page 107 NuFact 2021: The … / Report of Contributions Sterile neutrino searches

Contribution ID: 142 Type: not specified

Sterile neutrino searches Friday, 10 September 2021 16:00 (30 minutes)

Presenter: ARGÜELLES-DELGADO, Carlos A. (Harvard University) Session Classification: Plenary

September 30, 2021 Page 108 NuFact 2021: The … / Report of Contributions Theory overview of mass models

Contribution ID: 143 Type: not specified

Theory overview of mass models Friday, 10 September 2021 16:30 (30 minutes)

Presenter: SENJANOVIC, Goran Session Classification: Plenary

September 30, 2021 Page 109 NuFact 2021: The … / Report of Contributions Exploring BSM Physics at Neutrin …

Contribution ID: 144 Type: not specified

Exploring BSM Physics at Neutrino Oscillation Experiments Friday, 10 September 2021 17:00 (30 minutes)

Presenter: AGARWALLA, Sanjib Kumar (IFIC, CSIC-Universiy of Valencia) Session Classification: Plenary

September 30, 2021 Page 110 NuFact 2021: The … / Report of Contributions Summary of EnuBET/NuStorm wo …

Contribution ID: 145 Type: not specified

Summary of EnuBET/NuStorm workshop Saturday, 11 September 2021 12:40 (20 minutes)

Working group

Presenter: LONGHIN, Andrea (Universita e INFN, Padova (IT)) Session Classification: Plenary

September 30, 2021 Page 111 NuFact 2021: The … / Report of Contributions Summary of Outreach and Diversi …

Contribution ID: 146 Type: not specified

Summary of Outreach and Diversity Workshop Saturday, 11 September 2021 13:00 (20 minutes)

Presenter: DORDEI, Francesca (INFN, Cagliari (IT)) Session Classification: Plenary

September 30, 2021 Page 112 NuFact 2021: The … / Report of Contributions (Anti)neutrino-hydrogen and prec …

Contribution ID: 147 Type: Poster

(Anti)neutrino-hydrogen and precision measurements

A technique has been recently proposed to address the main limitations of past neutrino scattering experiments. In particular, it allows precise measurements of high statistics samples of (anti)neutrino-hydrogen interactions together with various nuclear targets. The planned high intensity LBNF beams give access to a broad mixture of measurements of electroweak parameters, QCD and hadron structure of nucleons and nuclei, nuclear physics, form factors, structure functions and cross-sections, as well as searches for new physics or verification of existing outstanding inconsistencies. A few examples of possible measurements will be discussed.

Working group WG2

Primary author: PETTI, Roberto (University of South Carolina (US)) Presenter: PETTI, Roberto (University of South Carolina (US)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 113 NuFact 2021: The … / Report of Contributions Muon beamline design on EMuS

Contribution ID: 148 Type: Poster

Muon beamline design on EMuS

China Spallation Neutron Source (CSNS) at Dongguan, China, has been in operation since August 2018. Its accelerator complex delivers a proton beam of 100 kW in beam power, 1.6 GeV in kinetic energy and 25 Hz in repetition rate. The Experimental Muon Source (EMuS) is planned tobe constructed from 2022 as a part of the CSNS-II project, and will utilize a proton beam of 25 kW in a standalone mode. Two different schemes for EMuS have been studied, with the Phase-I based ona conventional thick target and side collection, and the future upgrade or the baseline scheme based on a conical target and capture superconducting solenoid. The baseline scheme will provide both surface muon beams and high energy decay muon beams for µSR, muon imaging and muonic X-ray, etc. The muon beam momentum is tunable and covers a wide range from 28 MeV/c to450MeV/c. The complex muon beamlines are based on superconducting solenoids, superferric dipoles and room-temperature magnets, and divided into five areas: trunk beamline, surface muon area, decay muon area and low-energy muon area, as well as a vertical beamline from a tandem thin target to provide surface muons. The surface muon area can provide beam for three µSR spectrometers simultaneously with an electrostatic separator, by using the spatial beam splitting method. Three spectrometers or experimental setups in the decay muon area, for muon imaging, µSR, and muonic X-ray, respectively, can share the beam in the beam switch mode. The vertical beamline that offers high polarization surface muons serves only one spectrometer in the platform. Theareafor slow muons and potential particle physics experiments is also planned. For the Phase-I scheme or simplified scheme, the beamlines are relatively simple, and based on only room-temperature magnets. Only surface muons and cloud negative muons are provided to four endstations with focus on µSR applications and also muonic X-ray analysis. The beam delivery system employs a combined spatial beam splitting and switching method. This presentation will be about thedesign study of the above two schemes for EMuS.

Working group WG3

Primary authors: HONG, Yang (Institute of High Energy Physics, CAS); ZHOU, luping (Institute of High Energy Physics, CAS); TANG, Jingyu (Institute of High Energy Physics, CAS) Presenter: HONG, Yang (Institute of High Energy Physics, CAS) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 114 NuFact 2021: The … / Report of Contributions Pauli Blocking, Nuclear Excitation …

Contribution ID: 149 Type: Poster

Pauli Blocking, Nuclear Excitations and the Coulomb Sum Rule in Electron and Neutrino Scattering on Nuclei

Reliable modeling of quasielastic lepton scattering on nuclei is of great interest to neutrino oscillations experiments, especially at low values of momentum transfer q. We use the Coulomb Sum Rule (in conjunction with electron scattering data including nuclear elastic form factors, nuclear excitation form factors and quasielastic scattering) at low values of q to determine the suppression of the quasielastic cross section from all sources in a model independent way. The Coulomb Sum Rule (CSM) accounts for Pauli blocking contribution as well as all other sources of suppression. We compare the results to three models: (1) An analytic calculation of the average Pauli blocking suppression for a Relativistic Fermi Gas (RFG). (2) The average Pauli suppression from the genie v2 Monte Carlo (MC) generator, and (3) a calculation of Pauli suppression using a superscaling model.

Working group WG2

Primary authors: BODEK, Arie (University of Rochester (US)); CHRISTY, Eric (Hampton Univer- sity)

Presenter: CHRISTY, Eric (Hampton University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 115 NuFact 2021: The … / Report of Contributions Neutrino quantum decoherence at …

Contribution ID: 150 Type: Oral

Neutrino quantum decoherence at reactor experiments. Thursday, 9 September 2021 17:00 (15 minutes)

Reactor experiments are well suited to probe the possible loss of coherence of neutrino oscillations due to wave-packets separation. We will first comment on how decoherence modifies neutrino oscillation probabilities. Then we will turn our attention to the reactor experiments RENO, Daya Bay and KamLAND and discuss how well these experiments can constrain decoherence effects. We will finally present expected sensitivities for the future experiment JUNO.

Working group WG1

Primary author: DE ROMERI, Valentina (IFIC CSIC/UV Valencia) Co-authors: TERNES, Christoph Andreas (INFN, Sezione di Torino); DE GOUVEA, Andre (North- western University)

Presenter: DE ROMERI, Valentina (IFIC CSIC/UV Valencia) Session Classification: WG 1

September 30, 2021 Page 116 NuFact 2021: The … / Report of Contributions Slow control and data acquisition …

Contribution ID: 151 Type: Poster

Slow control and data acquisition development in the Mu2e experiment

The muon campus program at Fermilab includes the Mu2e experiment that will search for acharged- lepton flavor violating processes where a negative muon converts into an electron in thefieldof an aluminum nucleus, improving by four orders of magnitude the search sensitivity reached so far. Mu2e’s Trigger and Data Acquisition System (TDAQ) uses {\it otsdaq} solution. Developed at Fer- milab, {\it otsdaq} uses the {\it artdaq} DAQ framework and {\it art} analysis framework, for event transfer, filtering, and processing. {\it otsdaq} is an online DAQ software suite with a focus on flexibility and scalability, and provides a multi-user interface accessible through a web browser. A Detector Control System (DCS) for monitoring, controlling, alarming, and archiving has been developed using the Experimental Physics and Industrial Control System (EPICS) open source Platform. The DCS System has also been integrated into {\it otsdaq}, providing a GUI multi-user, web-based control, and monitoring dashboard.

Working group WG6

Primary authors: GIOIOSA, Antonio (Università & INFN Pisa); BONVENTRE, Richard (Lawrence Berkeley National Laboratory); DONATI, Simone (University of Pisa and Istituto Nazionale di Fisica Nu- cleare); FLUMERFELT, Eric (Fermi National Accelerator Laboratory); HORTON-SMITH, Glenn (Kansas State University); MORESCALCHI, Luca (INFN - Pisa); O’DELL, Vivian; PEDRESCHI, Elena (Univer- sita & INFN Pisa (IT)); PEZZULLO, Gianantonio (Yale University); SPINELLA, Franco (Universita & INFN Pisa (IT)); UPLEGGER, Lorenzo (Fermilab); RIVERA, Ryan Allen (Fermi National Accelerator Lab. (US))

Presenter: GIOIOSA, Antonio (Università & INFN Pisa) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 117 NuFact 2021: The … / Report of Contributions Recent results of the SoLid experi …

Contribution ID: 152 Type: not specified

Recent results of the SoLid experiment Wednesday, 8 September 2021 13:46 (22 minutes)

The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillations atthevery short baseline (6.3-8.9 m) of the SCK•CEN BR2 research reactor (Mol, Belgium) to address the so-called “Reactor Anti-neutrino Anomaly”. This anomaly arose from the reevaluation of the predicted reactor anti-neutrino flux which resulted in a deficit observed by very short baseline experiments. This deficit could be explained by flavor oscillations to a new type of neutrino: thesterile neutrino. High experimental sensitivity to inverse beta decay interactions can be achieved thanks to the innovative combination of highly segmented PVT scintillator that will serve as neutrino target and to measure the positron with a high neutron-gamma discrimination 6LiF:ZnS(Ag) scintillator. This technology offers precise time and space localization of the IBD signals. The reconstruction of the full topology of the events allows a strong background rejection, necessary given the low overburden at the reactor building and the presence of 214BiPo background from the 238U decay chain in the neutron screens. From the analysis point of view many variables can be reconstructed and exploited with multivariates and boosted decision trees analysis to improve the background rejections.

The detector has been taking a first phase of physics data from 2018 to 2020. In this contributionwe will present an overview of the experiment, the background rejections capabilities, the extraction of the reactor anti-neutrino signal and in particular for the first time the physics results with two years of data. The ability to probe the RAA with this result will be investigated. Finally the perspective of a full event topology analysis will be presented on the first opened dataset of 2018.

Working group WG5

Presenter: GALBINSKI, d (ICL) Session Classification: WG 5

September 30, 2021 Page 118 NuFact 2021: The … / Report of Contributions Impact of the QCD dynamics on th …

Contribution ID: 154 Type: Oral

Impact of the QCD dynamics on the determination of the high energy astrophysical neutrino flux Thursday, 9 September 2021 14:56 (18 minutes)

In this paper, we investigate the impact of different assumptions for the description of the QCD dynamics at high energies on the determination of the normalization Φ and spectral index γ of the astrophysical neutrino flux. The distribution of neutrino events at the IceCube is estimated considering the DGLAP, BFKL and CGC approaches and the best estimates for Φ and γ are determined using a maximum likelihood fit comparing the predictions with the distribution of observed events at IceCube. We also investigate if the increase in the effective exposure time expected in IceCube - Gen2 will to allow usto disentangle the QCD dynamical effects from the description of the astrophysical neutrino flux.

Working group WG2

Primary authors: RG, Diego; GONÇALVES, Victor (Universidade Federal de Pelotas); Ms QUADROS, Alex (Universidade Federal de Pelotas -UFPel)

Presenter: RG, Diego Session Classification: WG 2

September 30, 2021 Page 119 NuFact 2021: The … / Report of Contributions Measurement of the Production of …

Contribution ID: 155 Type: Poster

Measurement of the Production of Λ Baryons in Muon Anti-Neutrino-Ar Interactions with the MicroBooNE Detector

The MicroBooNE detector is a liquid argon time projection chamber (LArTPC) with an 85 tonactive mass that receives flux from the Booster Neutrino and the Neutrinos Main Injector (NuMI) beams, providing excellent spatial resolution of the reconstructed final state particles. Since 2015 Micro- BooNE has accumulated many neutrino and anti-neutrino scatterings with argon nuclei allowing for searches of rare interaction channels. The Cabibbo suppressed production of hyperons in anti-neutrino-nucleus interactions provides sensitivity to a range of effects, including second class currents, SU(3) symmetry violations and reinteractions between the hyperon and the nuclear remnant. This channel exclusively involves anti-neutrinos, offering an unambiguous constraint on wrong sign contamination. The effects of nucleon structure and final state interactions are distinct from those affecting the quasielastic channel and modify the Λ and Σ production cross sections in different ways, providing new information that could help to break their degeneracy. Few measurements of this channel have been made, primarily in older experiments such as Gargamelle [1,2]. This talk will cover the selection of candidate Λ events for the measurement of their production cross-section from Ar nuclei using the MicroBooNE detector.

1 O. Erriquez et al., Nucl. Phys. B140, 123 (1978) [2] O. Erriquez et al., Phys. Lett. B 70, 383 (1977)

Working group WG2

Primary author: THORPE, Christopher (Lancaster University) Presenter: THORPE, Christopher (Lancaster University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 120 NuFact 2021: The … / Report of Contributions New particle search with the REIN …

Contribution ID: 157 Type: not specified

New particle search with the REINFORCE citizen science project

The REINFORCE EU project (Research Infrastructures FOR Citizens in Europe) engages andsup- ports citizens to cooperate with researchers and actively contribute to the development of new knowledge for the needs of science and society. The overall aim is to bridge the gap between them, and reinforce society’s science capital. REINFORCE targets citizens of any age, without requiring prior physics or computing knowledge, and offers four “discovery demonstrators” from different areas of high-energy physics: Gravita- tional Wave Astronomy, Neutrino Physics, High-Energy Collider Physics, and the interplay of Cosmic Rays with Geoscience and Archaeology. The infrastructure of all demonstrators is based on ZOONIVERSE, the most popular citizen-science platform, which is expected to reach a large number of volunteers, and motivate them to play a part in frontier scientific research. After a brief description of the demonstrators comprising REINFORCE, we will present indetail the demonstrator titled “Search for new particles at the LHC”, which will engage citizen-scientists in searches for new elementary particles produced by the high-energy proton-proton collisions at the LHC of CERN. To make this possible, the demonstrator adopts a three-stage architecture. The first two stages use simulated data from the ATLAS detector to train citizens, butalsotoal- low for a quantitative assessment of their performance and a comparison with machine learning algorithms. The third stage, on the other hand, uses real data from the ATLAS Open-Data subset, providing two research paths: (a) study of Higgs boson decays to two photons, one of which could be converted to an electron-positron pair by interaction with detector material, and (b) search for yet undiscovered long-lived particles, predicted by certain theories Beyond-the-Standard-Model. The collected citizens’ results will be assessed and analyzed.

In addition to the aforementioned goals, REINFORCE will also establish communication and feedback channels between research and society through the REINFORCE community of practice, so that the citizens’ voice can be heard. Finally one of REINFORCE main goals is the exploitation of its potential for inclusion and diversity. More precisely its demonstrators’ development will include users who can be sense-impaired people (especially visual-impaired) and senior citizens. A consortium partner has already developed software which sonifies the data.

Working group Diversity, Education and Outreach

Primary author: Prof. KOURKOUMELIS, Christine (National and Kapodistrian University of Athens (GR))

Co-authors: FASSOULIOTIS, Dimitris (National and Kapodistrian University of Athens (GR)); AN- GELIDAKIS, Stylianos (National and Kapodistrian University of Athens (GR)); VOURAKIS, Stylianos (NKUA)

Presenter: Prof. KOURKOUMELIS, Christine (National and Kapodistrian University of Athens (GR)) Session Classification: Special session

September 30, 2021 Page 121 NuFact 2021: The … / Report of Contributions Neutrino Magnetic Moment–Mass …

Contribution ID: 158 Type: Poster

Neutrino Magnetic Moment–Mass Conundrum in the Light of Recent Experiments

The excess in electron recoil events reported recently by the XENON1T experiment may beinter- preted as evidence for a sizable transition magnetic moment of Majorana neutrinos. We show the consistency of this scenario when a single component transition magnetic moment takes values ϵ −11 (1.65 - 3.42) × 10 µB. Such a large value typically leads to unacceptably large neutrino masses. We show that new leptonic symmetries can solve this problem and demonstrate this with several examples. We first revive and then propose a simplified model based onSU(2)H horizontal symmetry and also generalize to a three-family SU(3)H -symmetry. Collider and low energy tests of these models are analyzed. We have also analyzed implications of the XENON1T data for the Zee model and its extensions which naturally generate a large neutrino magnetic moment with suppressed mν via a spin symmetry mechanism, but found that it is not large enough to explain recent data. We also propose a mechanism to evade stringent astrophysical limits on neutrino magnetic moments arising from stellar evolution by inducing a medium-dependent mass for the neutrino. Results will be discussed in this talk.

Working group WG5

Primary authors: Dr JANA, SUDIP (Max-Planck-Institut für Kernphysik); BABU, Kaladi (Okla- homa State University); Prof. LINDNER, Manfred (Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany)

Presenter: Dr JANA, SUDIP (Max-Planck-Institut für Kernphysik) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 122 NuFact 2021: The … / Report of Contributions The ENUBET project: a monitored …

Contribution ID: 159 Type: not specified

The ENUBET project: a monitored neutrino beam Tuesday, 7 September 2021 17:00 (20 minutes)

The ENUBET project intends to reduce the flux related systematics in an accelerator neutrino beam to the 1% level by monitoring associated charged leptons produced in a narrow band meson beam. Large angle leptons from kaon decays are measured in an instrumented decay tunnel, while low angle muons from pions can be monitored after the hadron dump. A general overwiev of the ENUBET physics program will be presented with particular focus on the beamline design. A key element of the project is the design of a meson transfer line with conventional magnets that maximizes the yield of K+ and π+, while minimizing the total length to reduce meson decays in the not instrumented region. In order to limit particle rates on the tunnel instrumentation, a high level of beam collimation is needed, thus allowing undecayed mesons to reach the end of the tunnel. At the same time a fine tuning of the shielding and the collimators is required to minimize any beam induced background in the decay region. The transfer line is optimized with TRANSPORT and G4beamline simulations for 8.5 GeV/cmesons with a momentum bite of 10%, considering various proton drivers and target designs. Doses are estimated with a full FLUKA model. The current envisaged beamline is based on conventional quadrupoles and dipoles and provides a large bending angle that can ensure a reduced background from the untagged neutrino component at the neutrino detector. This contribution will report details on the up-to-date design in terms of particle yields at the decay tunnel and expected neutrino fluxes at the far detector. Doses at the second dipole do not prevent the use of a superconducting magnet, that, increasing the bending angle, could improve the background suppression and the separation of the monitored neutrino component from other neutrinos: glimpses of such a design will be also shown.

In addition, studies on an alternative secondary site-dependent beamline with a broad momentum range (4, 6, 8.5 GeV/c), that could enhance the physics reach of the facility, will be discussed.

Working group WG3

Primary author: BRUNETTI, Giulia (Universita & INFN, Milano-Bicocca (IT)) Presenter: BRUNETTI, Giulia (Universita & INFN, Milano-Bicocca (IT)) Session Classification: WG 3

September 30, 2021 Page 123 NuFact 2021: The … / Report of Contributions Particle Physics Role Play Games i …

Contribution ID: 160 Type: not specified

Particle Physics Role Play Games in introductory physics courses.

An 18-hours course taught in role-play and distance learning modes is presented. The course was designed in order to experiment with innovative methods to engage students in active learning, to foster their identification in what is being studied and to boost their motivation in thestudyof introductory physics courses at Politecnico of Torino. Students are immersed in different settings and are asked to play the role of a physicist. As they go on in the adventure and overcome challenges, they gain competences (represented by experience points) and advance in capability. This advancement is expressed in terms of an increase in their level. The settings of the Role Play Game belong to the world of particle physics: from theneutrino hypothesis (1930s) to the study of collisions between pions and Helium nuclei (2000s). Students are exposed to experimental data (both simulated and from real accelerator experiments) and are asked to apply what they learned in the Physics I course. The pivotal concept around which the entire course revolves is that of conservation laws (Energy and momentum).

Students are organised into groups in order to stimulate teamwork and the use of soft skills. When a new concept or an in-depth study is required as a new tool to succeed in the game, students are invited to develop it independently through a problem-solving activity designed by the instructor.

Working group Diversity, Education and Outreach

Primary author: Dr GALANTE, Lorenzo (Department of Applied Science and Technology, Teaching and Language Laboratory at Politecnico di Torino)

Co-author: Dr GNESI, Ivan (Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi)

Presenter: Dr GALANTE, Lorenzo (Department of Applied Science and Technology, Teaching and Language Laboratory at Politecnico di Torino) Session Classification: Special session

September 30, 2021 Page 124 NuFact 2021: The … / Report of Contributions Latest results from NOvA

Contribution ID: 161 Type: Oral

Latest results from NOvA Wednesday, 8 September 2021 12:40 (22 minutes)

NOvA is a long-baseline neutrino oscillation experiment. Its large tracking calorimeters can detect and identify muon and electron neutrino interactions with high efficiency. Neutrinos produced by the NuMI beam are detected by a near detector, located at Fermilab, and a much larger far detector, located 810 km away in Ash River, Minnesota. NOvA can measure the electron neutrino and antineutrino appearance rates, as well as the muon neutrino and antineutrino disappearance rates, in order to constrain neutrino oscillations parameters, including the neutrino mass hierarchy and the CP-violating phase δCP. This talk will present NOvA’s latest results combining both neutrino data (13.6×10^20POT) and antineutrino data (12.5×10^20 POT).

Working group WG1

Primary author: STRAIT, Matthew (Fermi National Accelerator Laboratory) Presenter: STRAIT, Matthew (Fermi National Accelerator Laboratory) Session Classification: WG 1

September 30, 2021 Page 125 NuFact 2021: The … / Report of Contributions Resolving the NOvA and T2K tens …

Contribution ID: 162 Type: Oral

Resolving the NOvA and T2K tension in the presence of Neutrino Non-Standard Interactions Wednesday, 8 September 2021 14:56 (18 minutes)

The latest data of the two long-baseline accelerator experiments NOνA and T2K, interpreted inthe standard 3-flavor scenario, display a discrepancy. A mismatch in the determination of thestandard CP-phase δCP extracted by the two experiments is evident in the normal neutrino mass ordering. While NOνA prefers values close to δCP ∼ 0.8π, T2K identifies values of δCP ∼ 1.4π. Such two estimates are in disagreement at more than 90% C.L. for 2 degrees of freedom. We show that such a tension can be resolved if one hypothesizes the existence of complex neutral-current non-standard interactions (NSI) of the flavor changing type involving the e−µ or the e−τ sectors with couplings |εeµ| ∼ |εeτ | ∼ 0.2. Remarkably, in the presence of such NSI, both experiments point towards the same common value of the standard CP-phase δCP ∼ 3π/2. Our analysis also highlights an intriguing preference for maximal CP-violation in the non-standard sector with the NSI CP-phases having best fit close to ϕeµ ∼ ϕeτ ∼ 3π/2, hence pointing towards imaginary NSI couplings.

Working group WG1

Primary authors: PALAZZO, Antonio (University of Bari and INFN); CHATTERJEE, Sabya Sachi (IPPP, Durham University)

Presenter: CHATTERJEE, Sabya Sachi (IPPP, Durham University) Session Classification: WG 1

September 30, 2021 Page 126 NuFact 2021: The … / Report of Contributions Total Neutron cross section measu …

Contribution ID: 163 Type: Oral

Total Neutron cross section measurement with a 3D projection scintillator tracker for long-baseline neutrino experiments Tuesday, 7 September 2021 16:20 (20 minutes)

The long-baseline neutrino oscillation experiments rely on detailed models of neutrino interactions on nuclei. These models constitute an important source of systematic uncertainty, driven in part because detectors to date have been blind to final state neutrons. We are proposing a three-dimensional projection scintillator tracker as a near detector component in the next generation long-baseline neutrino experiments such as T2K upgrade and DUNE. Due to the good timing resolution and fine granularity, this technology is capable of measuring neutrons in neutrino interactions on an event-by-event basis and will provide valuable data for refining neutrino interaction models and ways to reconstruct neutrino energy. Two prototypes have been exposed to the neutron beamline in Los Alamos National Lab (LANL) in both 2019 and 2020 with neutron energy ranging from 0 to 800 MeV. In order to demonstrate the capability of the neutron detection, a total neutron-scintillator cross section is measured with one of the prototypes and compared to external measurements. In this presentation, the details of the cross section measurement and the systematic uncertainty handling will be presented.

Working group WG2

Primary author: YANG, Guang (Stony Brook University) Presenter: YANG, Guang (Stony Brook University) Session Classification: WG 2 + WG 6 (WG2 zoom)

September 30, 2021 Page 127 NuFact 2021: The … / Report of Contributions Analysis of the management of co …

Contribution ID: 164 Type: not specified

Analysis of the management of conference presentations in the CMS collaboration

Presentation of the achievements and results to the community of reference in conferences and workshops is a major duty of any scientific collaboration. Large collaborations face the issue of ensuring at the same time the highest quality, a proper recognition of the work done by its members and an adequate representation of all the contributing bodies and institutions, and of the diversity of the collaboration. In this talk, we summarise the procedures for the management of conference presentations adopted by the CMS collaboration at the CERN Large Hadron Collider and the statistical analysis of an unprecedented sample of 13 years of talks and posters at national and international events. Good practices and critical points will be highlighted and discussed.

Working group Diversity, Education and Outreach

Primary author: CMS, Collaboration Presenter: CMS, Collaboration Session Classification: Special session

September 30, 2021 Page 128 NuFact 2021: The … / Report of Contributions Expanding T2K near detector fit by …

Contribution ID: 169 Type: Poster

Expanding T2K near detector fit by adding proton information

T2K (Tokai to Kamioka) is a long-baseline neutrino oscillation experiment located in Japan. One of the most challenging tasks of T2K is to determine whether CP is violated in the lepton sector, which is suggested by recent T2K results. By utilizing the near detector (ND280) data, T2K can constrain neutrino interaction and flux uncertainties by fitting a parametrised model to data. This allows for a significant reduction of the systematic uncertainties in neutrino oscillation analyses. The fit to ND280 data currently uses several samples which are based on muon kinematics andpion multiplicity. There is ongoing work to expand these samples by incorporating the reconstructed proton multiplicity in order to enhance ND280 sensitivity to neutrino cross-section modelling that drive current systematic uncertainties. The poster presents the properties of new ND280 samples and how they enhance the sensitivities to nuclear effects that are dominant at the energy range relevant for T2K. The addition of the proton multiplicity will also help to reduce systematics uncertainties that affect neutrino oscillation measurements at T2K.

Working group WG1

Primary author: SKWARCZYNSKI, Kamil Janusz (National Centre for Nuclear Research (PL))

Presenter: SKWARCZYNSKI, Kamil Janusz (National Centre for Nuclear Research (PL)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 129 NuFact 2021: The … / Report of Contributions An improved muon neutrino …

Contribution ID: 170 Type: Oral

An improved muon neutrino charged-current single positive pion cross section on water using michel electron reconstruction in the T2K near detector Thursday, 9 September 2021 13:16 (18 minutes)

The T2K experiment is a long-baseline neutrino oscillation experiment, based in Japan, whichmea- sures the oscillation probability of muon neutrinos produced at the JPARC facility, and detected at Super-Kamiokande. A detailed understanding of neutrino-nucleus cross sections is essential to measuring neutrino oscillation parameters. The off-axis near detector ND280 is used to measure a variety of neutrino interaction rates in the unoscillated beam, in order to give a better understanding of the individual cross sections. T2K has been working to add single pion production events to the oscillation analysis samples, thus increasing the impact of pion production cross section uncertainties on oscillation results. There is an ongoing effort on T2K to measure the cross section for charged current muon neutrino + events on water, with one positively charged pion in the final state (νµCC1π ) using the ND280 detector. The described measurement builds on a previous result, with significant changes tothe particle kinematic ranges considered, including new reconstruction methods for accessing low energy pions using the signature of the decay chain to Michel electrons (the first instance of this technique being used in a T2K analysis.) In addition, the analysis will benefit from an increase in statistics by a factor of two, an updated treatment for unfolding, and a new treatment for the evaluation and propagation of systematic uncertainties. This talk will focus on the updated analysis techniques and simulated results for a variety of potential data sets based on simulations and previous measurements of signal and background processes.

New or updated neutrino cross section measurements can be used to compare to our current interaction models, in order to reduce model-related systematics, which will be particularly important for next generation oscillation experiments.

Working group WG2

Primary author: JENKINS, Sam (University of Sheffield) Presenter: JENKINS, Sam (University of Sheffield) Session Classification: WG 2

September 30, 2021 Page 130 NuFact 2021: The … / Report of Contributions Overview of neutrino electromagn …

Contribution ID: 171 Type: Oral

Overview of neutrino electromagnetic properties (the theory, laboratory experiments and astrophysical probes) Tuesday, 7 September 2021 17:06 (22 minutes)

We continue our discussions [1-4] on neutrino electromagnetic properties. In the present talk we start with a short introduction to the derivation of the general structure of the electromagnetic form factors of Dirac and Majorana neutrinos. Then we consider experimental constraints on neutrino magnetic and electric dipole moments, electric millicharge, charge radii and anapole moments from the terrestrial laboratory experiments (the bounds obtained by the reactor MUNU, TEXONO and GEMMA experiments and the solar Super-Kamiokande and the recent Borexino experiments). A special credit is done to the most severe constraints on neutrino magnetic moments, millicharge and charge radii [5-9]. The world best reactor [5] and solar [6] neutrino and astrophysical [10,11] bounds on neutrino magnetic moments, as well as bounds on millicharge from the reactor neutrinos [7] are included in the recent issues of the Review of Particle Physics (see the latest Review: P.A. Zyla et al. (Particle Data Group), Prog. Theor. Exp. Phys. 2020, 083C01). The best astrophysical bound onneutrino millicharge was obtained in [12]. In the recent studies [13] it is shown that the puzzling results of the XENON1T collaboration [14] at few keV electronic recoils could be due to the scattering of solar neutrinos endowed with finite Majorana transition magnetic moments of the strengths lie within the limits set by the Borexino experiment with solar neutrinos [6]. The comprehensive analysis of the existing and new extended mechanisms for enhancing neutrino transition magnetic moments to the level appropriate for the interpretation of the XENON1T data and leaving neutrino masses within acceptable values is provided in [15]. Considering neutrinos from all known sources, as well as including all available data from XENON1T and Borexino, the strongest up-to-date exclusion limits on the active-to-sterile neutrino transition magnetic moment are derived in [16] . A comprehensive analisys of constraints on neutrino electric millicharge from experiments of elastic neutrino-electron interaction and future prospects involving coherent elastic neutrino-nucleus scattering is presented in [17]. We also present results of the recent detailed study [18] of the electromagnetic interactions of massive neutrinos in the theoretical formulation of low-energy elastic neutrino-electron scattering. The formalism of neutrino charge, magnetic, electric, and anapole form factors defined asmatri- ces in the mass basis with account for three-neutrino mixing is presented. Using the derived new expression for a neutrino electromagnetic scattering cross section [18], we further developed studies of neutrino electromagnetic properties using the COHERENT data [8] and obtained [9] new bounds on the neutrino charge radii from the COHERENT experiment. Worthy of note, our paper [9] has been included by the Editors Suggestion to the Phys. Rev. D “Highlights of 2018”, and the obtained constraints on the nondiagonal neutrino charge radii since 2019 has been included by the Particle Data Group to the Review of Particle Physics. The main manifestation of neutrino electromagnetic interactions, such as: 1) the radiative decay in vacuum, in matter and in a magnetic field, 2) the neutrino Cherenkov radiation, 3) theplasmon decay to neutrino-antineutrino pair, 4) the neutrino spin light in matter, and 5) the neutrino spin and spin-flavour precession are discussed. Phenomenological consequences of neutrino electromagnetic interactions (including the spin light of neutrino [19]) in astrophysical environments are also reviewed.

September 30, 2021 Page 131 NuFact 2021: The … / Report of Contributions Overview of neutrino electromagn …

The second part of the proposed talk is dedicated to results of our mostly recently performed detailed studies of new effects in neutrino spin, spin-flavour and flavor oscillations under thein- fluence of the transversal matter currents [20] and a constant magnetic field [21,22], aswellto our newly developed approach to the problem of the neutrino quantum decoherence [23] and also to our recent proposal [24] for an experimental setup to observe coherent elastic neutrino-atom scattering (CEνAS) using electron antineutrinos from tritium decay and a liquid helium target that as we have estimated opens a new frontier in constraining the neutrino magnetic moment. The discussed in the second part of the talk new results include two new effects that canbesum- marized as follows: 1) it is shown [20] that neutrino spin and spin-flavor oscillations can be engendered by weak interactions of neutrinos with the medium in the case when there are the transversal matter currents; different possibilities for the resonance amplification of oscillations are discussed, the neutrino Standard Model and non-standard interactions are accounted for; 2) within a new treatment [21] of the neutrino flavor, spin and spin-flavour oscillations in the presence of a constant magnetic field, that is based on the use of the exact neutrino stationary states in the magnetic field, it is shown that there is an interplay of neutrino oscillations on different frequencies. In particular: a) the amplitude of the flavour oscillations νLe↔ νLμ at the vacuum frequency is modulated by the magnetic field frequency μB , and b) the neutrino spin oscillation probability (without change of the neutrino flavour) exhibits the dependence on the neutrino energy and mass square difference Δm2 . The discovered new phenomena in neutrino oscillations should be accounted for reinterpretation of results of already performed experiments on detection of astrophysical neutrino fluxes produced in astrophysical environments with strong magnetic fields and dense matter. These new neutrino oscillation phenomena are also of interest in view of future experiments on observations of supernova neutrino fluxes with large volume detectors like DUNE, JUNO and Hyper-Kamiokande. Two other new results discussed in the concluding part of the talk are as follows: 3) a new theoretical framework, based on the quantum field theory of open systems applied to neutrinos, has been developed [23] to describe the neutrino evolution in external environments accounting for the effect of the neutrino quantum decoherence; we have used this approach to consider a new mechanism of the neutrino quantum decoherence engendered by the neutrino radiative decay to photons and dark photons in an astrophysical environment, the corresponding new constraints on the decoherence parameter have been obtained; 4) in [24] we have proposed an experimental setup to observe coherent elastic neutrino-atom scattering (CEνAS) using electron antineutrinos from tritium decay and a liquid helium target and shown that the sensitivity of this apparatus (when using 60 g of tritium) to a possible electron neutrino magnetic moment can be of order about 7×10−13μB at 90% C.L., that is more than one order of magnitude smaller than the current experimental limit. 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 electromagnetic 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) 531-591. [2] C. Giunti, K. Kouzakov, Y. F. Li, A. Lokhov, A. Studenikin, S. Zhou, Electromagnetic neutrinos in laboratory experiments and astrophysics, Annalen Phys. 528 (2016) 198. [3] A. Studenikin, Neutrino electromagnetic interactions: A window to new physics - II, PoS EPS-HEP2017 (2017) 137. [4] A. Studenikin, Electromagnetic neutrino properties: new constraints and new effects, PoS ICHEP2020 (2021)180.

September 30, 2021 Page 132 NuFact 2021: The … / Report of Contributions Overview of neutrino electromagn …

[5] A. Beda, V. Brudanin, V. Egorov et al., The results of search for the neutrino magnetic moment in GEMMA experiment , Adv. High Energy Phys. 2012 (2012) 350150. [6] M. Agostini et al (Borexino coll.), Limiting neutrino magnetic moments with Borexino Phase-II solar neutrino data, Phys. Rev. D 96 (2017) 091103. [7] A. Studenikin, New bounds on neutrino electric millicharge from limits on neutrino magnetic moment, Europhys. Lett. 107 (2014) 21001. [8] D. Papoulias, T. Kosmas, COHERENT constraints to conventional and exotic neutrino physics, Phys. Rev. D 97 (2018) 033003. [9] M. Cadeddu, C. Giunti, K. Kouzakov, Y.F. Li, A. Studenikin, Y.Y. Zhang, “Neutrino charge radii from COHERENT elastic neutrino-nucleus scattering”, Phys. Rev. D 98 (2018) 113010. [10] N. Viaux, M. Catelan, P. B. Stetson, G. G. Raffelt et al., Particle-physics constraints from the globular cluster M5: neutrino dipole moments, Astron. & Astrophys. 558 (2013) A12. [11] S. Arceo-Díaz, K.-P. Schröder, K. Zuber and D. Jack, Constraint on the magnetic dipole moment of neutrinos by the tip-RGB luminosity in ω-Centauri, Astropart. Phys. 70 (2015) 1. [12] A. Studenikin, I. Tokarev, Millicharged neutrino with anomalous magnetic moment in rotating magnetized matter, Nucl. Phys. B 884 (2014) 396-407. [13] O. G. Miranda, D. K. Papoulias, M. Tórtola, J. W. F. Valle, XENON1T signal from transition neutrino magnetic moments , Phys.Lett. B 808 (2020) 135685. [14] E. Aprile et al. [XENON], Observation of excess electronic recoil Events in XENON1T, Phys. Rev. D 102 (2020) 072004. [15] K. Babu, S. Jana, M. Lindner, Large neutrino magnetic moments in the light of recent experiments, JHEP 2010 (2020) 040. [16] V. Brdar, A. Greljo, J. Kopp, T. Opferkuch, The neutrino magnetic moment portal: Cosmology, astrophysics, and direct detection, JCAP01 (2021) 039. [17] A. Parada, Constraints on neutrino electric millicharge from experiments of elastic neutrino- electron interaction and future experimental proposals involving coherent elastic neutrino-nucleus scattering, Adv.High Energy Phys. 2020 (2020) 5908904. [18] K. Kouzakov, A. Studenikin, Electromagnetic properties of massive neutrinos in low-energy elastic neutrino-electron scattering, Phys. Rev. D 95 (2017) 055013. [19] A. Grigoriev, A. Lokhov, A. Studenikin, A. Ternov, Spin light of neutrino in astrophysical environments, JCAP 1711 (2017) 024 (23 p.). [20] P. Pustoshny, A. Studenikin, Neutrino spin and spin-flavour oscillations in transversal matter currents with standard and non-standard interactions, Phys. Rev. D 98 (2018) 113009. [21] A. Popov, A. Studenikin, Neutrino eigenstates and flavour, spin and spin-flavour oscillations in a constant magnetic field, Eur. Phys. J. C 79 (2019) 144. [22] P. Kurashvili, K. Kouzakov, L. Chotorlishvili, A. Studenikin, Spin-flavor oscillations of ultrahigh- energy cosmic neutrinos in interstellar space: The role of neutrino magnetic moments”, Phys. Rev. D 96 (2017) 103017. [23] K. Stankevich, A. Studenikin, Neutrino quantum decoherence engendered by neutrino radiative decay, Phys. Rev. D 101 (2020) 056004. [24] M. Cadeddu, F. Dordei, C. Giunti, K. Kouzakov, E. Picciau, A. Studenikin, Potentialities of a low-energy detector based on 4He evaporation to observe atomic effects in coherent neutrino scattering and physics perspectives, Phys. Rev. D 100 (2019) 073014.

September 30, 2021 Page 133 NuFact 2021: The … / Report of Contributions Overview of neutrino electromagn …

[25] A. Popov, A. Studenikin, Manifestations of non-zero Majorana CP violating phases in oscillations of supernova neutrinos, accepted for publ. in Phys. Rev. D, arXiv: 2102.07991 [hep-ph].

Working group WG1

Primary author: STUDENIKIN, Alexander (M.V. Lomonosov Moscow State University (RU)) Presenter: STUDENIKIN, Alexander (M.V. Lomonosov Moscow State University (RU)) Session Classification: WG 1 + WG 5 (WG1 zoom)

September 30, 2021 Page 134 NuFact 2021: The … / Report of Contributions Explaining the MiniBooNE Excess …

Contribution ID: 172 Type: Poster

Explaining the MiniBooNE Excess Through a Mixed Model of Oscillation and Decay

This talk presents a model of the electron-like excess observed by the MiniBooNE experiment comprising of oscillations involving two new mass states: ν4, at O(1) eV, that participates in oscillations, and N , at O(100) MeV, that decays to ν + γ via a dipole interaction. Short-baseline oscillation data sets, omitting MiniBooNE appearance data, are used to predict the oscillation parameters. We simulate the production of N along the Booster Neutrino Beamline via both Primakoff upscattering (νA → N A) and Dalitz-like neutral pion decays (π0 → N νγ). The simulated events are fit to the MiniBooNE neutrino energy and visible scattering angledata separately to find a joint allowed region at 95\% CL. A point in this region with a coupling of 3.6 × 10−7 GeV−1, N mass of 394 MeV, oscillation mixing angle of 6 × 10−4 and mass splitting of 1.3 eV2 has ∆χ2/dof for the energy fit of 15.23/2 and 37.80/2. This model represents a significant improvement over the traditional single neutrino oscillation model.

Working group WG5

Primary author: Mr VERGANI, Stefano (University of Cambridge) Co-authors: Mr KAMP, Nicholas William (Massachusetts Institute of Technology); Mr DIAZ, Alejan- dro (Massachusetts Institute of Technology); Prof. ARGÜELLES, Carlos A. (Harvard University); Prof. CONRAD, Janet M. (Massachusetts Institute of Technology); Prof. SHAEVITZ, Michael H. (Columbia University); Prof. UCHIDA, Melissa A. (University of Cambridge) Presenter: Mr VERGANI, Stefano (University of Cambridge) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 135 NuFact 2021: The … / Report of Contributions Long-baseline neutrino oscillation …

Contribution ID: 173 Type: Oral

Long-baseline neutrino oscillation sensitivities with Hyper-Kamiokande Wednesday, 8 September 2021 13:46 (22 minutes)

Neutrino oscillation physics is entering the precision measurement era. The focus of next generation neutrino experiments will beto determine the parameters governing neutrino oscillations precisely. The Hyper-Kamiokande experiment, currently under construction in Japan, includes a long-baseline neutrino oscillations program. Its main goals will be to determine whether CP violation occurs in neutrino oscillations and to provide precise neutrino oscillation parameters. To achieve this, Hyper-Kamiokande will have a large fiducial volume (8 times that of Super-Kamiokande) and will benefit from the upgrade of the J-PARC neutrino beam, enabling it to collect an unprecedented amount of statistics. A thorough knowledge of systematic effects and powerful near detectors are needed to match this levelof precision. This talk presents the expected sensitivity of Hyper-Kamiokande to oscillation parameters, notably CP violation, using a combination of accelerator and atmospheric neutrino information.

Working group WG1

Primary author: MUNTEANU, Laura-Iuliana (Université Paris-Saclay (FR)) Presenter: MUNTEANU, Laura-Iuliana (Université Paris-Saclay (FR)) Session Classification: WG 1

September 30, 2021 Page 136 NuFact 2021: The … / Report of Contributions Is T2K missing energy? Searching …

Contribution ID: 174 Type: Oral

Is T2K missing energy? Searching the electron-scattering data archives for robust removal energy uncertainties Wednesday, 8 September 2021 16:36 (18 minutes)

In order to make precision measurements of neutrino oscillation parameters, it is vital for T2K to have an accurate kinematic reconstruction of the neutrino energy. The uncertainty on this reconstruction has a variety of contributions. However for recent oscillation measurements, the missing energy in the nuclear response is a significant source of systematic uncertainty. T2K has recently updated its nuclear response model, yet it fails to accurately predict the evolution of inclusive electron scattering data over the relevant range of kinematic phase space for T2K-thus motivating a large systematic uncertainty.

By comparing our models to inclusive electron data, it is possible to reduce this systematic. This talk will focus on the development of an approximate electron scattering simulation in NEUT, the event generator used by T2K, and its comparison to such electron scattering data to produce a physically motivated correction to the first nucleon removal energy systematic. The sensitivity of cross-section measurements to such effects will be discussed in the context of recent T2K CC0Pi measurements.

Working group WG2

Primary author: Mr MCELWEE, Jordan (University of Sheffield) Co-author: T2K COLLABORATION, T2K Collaboration Presenter: Mr MCELWEE, Jordan (University of Sheffield) Session Classification: WG1+WG2 (WG1 zoom)

September 30, 2021 Page 137 NuFact 2021: The … / Report of Contributions The SND@LHC experiment at CERN

Contribution ID: 176 Type: Oral

The SND@LHC experiment at CERN Thursday, 9 September 2021 15:32 (18 minutes)

SND@LHC is a compact and stand-alone experiment to perform measurements with neutrinos produced at the LHC in a hitherto unexplored pseudo-rapidity region of 7.2 < < 8.6, complementary to all the other experiments at the LHC. The experiment is to be located 480 m downstream of IP1 in the unused TI18 tunnel. The detector is composed of a hybrid system based on an 800 kgtarget mass of tungsten plates, interleaved with emulsion and electronic trackers, followed downstream by a calorimeter and a muon system. The configuration allows efficiently distinguishing between all three neutrino flavours, opening a unique opportunity to probe physics of heavy flavour production at the LHC in the region that is not accessible to ATLAS, CMS and LHCb. This region is of particular interest also for future circular colliders. The detector concept is also well suited to searching for Feebly Interacting Particles via signatures of scattering in the detector target. The first phase aims at operating the detector throughout LHC Run 3 to collect a total of150fb−1.The experiment was recently approved by the Research Board at CERN. A new era of collider neutrino physics is just starting.

Working group WG2

Primary author: VAN HERWIJNEN, Eric (CERN) Presenter: VAN HERWIJNEN, Eric (CERN) Session Classification: WG 2

September 30, 2021 Page 138 NuFact 2021: The … / Report of Contributions Latest results from MINERvA

Contribution ID: 177 Type: Oral

Latest results from MINERvA

MINERvA was a neutrino scattering experiment that utilized a novel, fine-grained scintillator tracker, a magnetized muon spectrometer (the MINOS near detector), and embedded Pb, Fe, CH, C, and He targets to measure neutrino interactions as a function of atomic number as well as various kinematic quantities. MINERvA collected data between November 2009 and Februrary 2019 in the NuMI low and medium energy beam tunes with both neutrino and anti-neutrino focused beams. The collaboration is now in an intensive data analysis period that will last for at least afewmore years. My talk will present the most recent MINERvA results with a focus on measurements that are important for constraining systematic uncertainties on neutrino interactions, and the neutrino flux, in current and future long-baseline oscillation experiments. I will also describe someofthe analysis techniques that MINERvA pioneered as well as the effort to disseminate those techniques for future analysis of MINERvA data and the effort to integrate those techniques into DUNE.

Working group WG2

Primary author: KORDOSKY, Mike (College of William and Mary (US)) Presenter: KORDOSKY, Mike (College of William and Mary (US)) Session Classification: Plenary

September 30, 2021 Page 139 NuFact 2021: The … / Report of Contributions Connecting low to high: Neutrino …

Contribution ID: 179 Type: Oral

Connecting low to high: Neutrino non-standard interactions and EFTs

Due to the null observation of any definite signals of new physics or any significant deviation from the standard model prediction since the Higgs discovery, searching for new physics model independently in the effective field theory (EFT) framework has become a popular alternative. In this talk, I shall first review the connection between neutrino NSIs in the quantum mechanical formalism and that in quantum field theory. I will then present our recent work on utilizing thelow- energy neutrino oscillation (both accelerator and reactor) experiment, the COHERENT experiment, and precision cosmology to connect neutrino non-standard interactions with the high-energy UV physics above the weak scale in the EFT framework.

Working group WG1

Primary author: DU, Yong (ITP CAS) Presenter: DU, Yong (ITP CAS) Session Classification: WG 1

September 30, 2021 Page 140 NuFact 2021: The … / Report of Contributions SAND - System for on-Axis Neutri …

Contribution ID: 180 Type: Poster

SAND - System for on-Axis Neutrino Detection - in the DUNE Near Detector Complex

The DUNE experiment aims to precisely measure the long baseline neutrino oscillation parameters. The DUNE Far Detector consists of four liquid argon time-projection chambers (total LAr mass of 17 kton for each cryostat), that will be installed at the Sanford Underground Research Facility (SURF) in South Dakota, 1300 km from the proton beam target.

The Near Detector complex, located at Fermilab, is fundamental for limiting the systematic uncertainties, due to the neutrino/antineutrino flux and to the cross-section. It comprises three complementary detectors: ND-Lar, ND-Gar and SAND (System for on-Axis Neutrino Detection). ND-Lar and ND-Gar can move off-axis, while SAND is the only detector permanently on-axis, whose primary goal is to monitor the beam and to measure the flux. In this talk, the SAND design andthe expected performances will be described together with its role within the Near Detector complex for the DUNE physics program.

Working group WG1

Primary author: DUNE COLLABORATION Presenter: VICENZI, Matteo (University of Genova) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 141 NuFact 2021: The … / Report of Contributions A LArTPC with Vertical Drift for t …

Contribution ID: 181 Type: Oral

A LArTPC with Vertical Drift for the DUNE Far Detector Thursday, 9 September 2021 13:50 (18 minutes)

This talk presents the conceptual design of an alternative Liquid Argon Time Projection Chamber (LArTPC) for the Deep Underground Neutrino Experiment (DUNE). The DUNE experiment will be a large LAr detector located at a baseline of 1300 kilometers,1.5 km deep underground. It is planned to be made up of four modules, each with a total mass of 17 kt of LAr, at least the first two of which will consist in LArTPCs. Although this technology was proposed 40 years ago and has been implemented before, it was never done at such a large scale. To prove the feasibility of the LArTPC technology at the kiloton scale, the ProtoDUNE SP and DP detectors were constructed and operated at the CERN Neutrino facility. The Vertical Drift concept proposes to instrument a DUNE module with a TPC where the electrons drift vertically, from a cathode suspended at mid-height, towards anodes placed at the bottomand top of the detector. The anodes would be made out of printed PCBs instead of wires, andthe new disposition would allow the top readout electronics to be accessible during the lifetime of the experiment. The layout of the photo-detection system, that provides the timestamp of theevent and the depth coordinate, would need to be modified with respect to the horizontal drift detector scheme. Since the PCB anodes are opaque, the photo-sensors would need to be placed on surfaces at a high voltage, such as the cathode or the field cage, posing a challenge in terms of power and signal transmission. Studies are ongoing both to overcome the technical challenges of this new design and to finalize the concept.

Working group WG6

Primary author: SACERDOTI, Sabrina (APC-Paris,France) Co-author: DUNE COLLABORATION Presenter: SACERDOTI, Sabrina (APC-Paris,France) Session Classification: WG6

September 30, 2021 Page 142 NuFact 2021: The … / Report of Contributions First detection of solar neutrinos f …

Contribution ID: 182 Type: Poster

First detection of solar neutrinos from the CNO fusion cycle with the Borexino experiment

Borexino is a large-volume liquid-scintillator experiment designed for real-time detection of low energy solar neutrinos. It is located at Laboratori Nazionali del Gran Sasso (INFN) and started taking data in May 2007. This talk will report about the latest results of Borexino: the direct observation of neutrinos produced in the carbon-nitrogen-oxygen (CNO) fusion cycle in the Sun. The measurement was possible only after a dedicated campaign of hardware improvement aimed at stabilizing the thermal condition of the detector and at reducing the intrinsic radioactive backgrounds.The CNO cycle is the main nuclear engine in massive stars: this result is therefore crucial for the modeling of solar physics and confirms the existence of this process in the Universe. The details of the detector stabilization and the analysis strategy used by the Borexino collaboration for disentangling the spectral component of the CNO neutrinos from the residual backgrounds will be presented.

Working group WG6

Primary author: BIONDI, Riccardo (INFN - National Institute for Nuclear Physics) Presenter: BIONDI, Riccardo (INFN - National Institute for Nuclear Physics) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 143 NuFact 2021: The … / Report of Contributions EMuS at CSNS-II

Contribution ID: 183 Type: not specified

EMuS at CSNS-II Wednesday, 8 September 2021 17:00 (30 minutes)

Experimental muon source (EMuS) at China’s spallation neutron source (CSNS) is a multidisci- plinary project intended mainly for μSR, muon induced x-ray emission (MIXE) and imaging applications, and secondary for muonium to antimuonium conversion physics or neutrino cross sections measurements. These goals are achieved by intense beams of surface and decay muons produced by pions decaying at rest or in flight respectively, and neutrinos. At EMuS, pions are produced when a target of graphite is interacting with a 25 kW primary proton beam provided from the rapid cycling synchrotron (RCS) of CSNS at phase-II. Two schemes of EMuS are being studied. The main scheme is called baseline and is operating in surface or decay muons modes and secondary for neutrinos. It is employing a target station with a superconducting capture solenoid and a conical target of graphite for the capture and collection of surface muons or charged pions, a long superconducting line for the transport of surface muons or the decay of charged pions, and shorter beamlines with which extracted surface or decay muons are led to μSR, MIXE and muon imaging experiments. For the neutrino cross sections measurements, a detector is examined few meters downstream from the end of the long superconducting line. In addition, upstream from the superconducting target station, a vertical μSR beamline of quadrupoles is foreseen to run in parallel, employing a thin slab of graphite for the production of surface muons with high polarization. The secondary scheme is called simplified and operating for surface muons and possibly forMIXE experiments. It is employing a conventional rotated thick slab of graphite located sideways from a quadrupole triplet collector, a dipole and a beamline of quadrupoles for the selection and transport of surface muons respectively to μSR experiments. In this talk, the different layouts of target stations and beamlines are discussed.

Working group WG3

Primary author: Dr VASSILOPOULOS, Nikolaos (Institute of High Energy Physics, CAS) Co-author: Prof. YUAN, Ye (IHEP/CAS) Presenter: Dr VASSILOPOULOS, Nikolaos (Institute of High Energy Physics, CAS) Session Classification: WG 3

September 30, 2021 Page 144 NuFact 2021: The … / Report of Contributions Quantum Decoherence in Neutrin …

Contribution ID: 184 Type: Oral

Quantum Decoherence in Neutrino Oscillations Thursday, 9 September 2021 17:15 (15 minutes)

Quantum decoherence in neutrino oscillations was theorized almost 50 years ago, however there is still no clear theoretical understanding of this phenomenon, there is not even agreement on whether or not it could be observed at all. Treating all particles, including the source and detector, consistently in QFT, we study a model where the decoherence emerges from the time evolution of the initial state. We started by studying some simplified cases, obtaining nonetheless interesting results: we have shown that someof the assumptions used in many works on decoherence (such as the covariance of the wavepackets) are inconsistent, since the time evolution would break the Lorentz invariance; moreover we have seen that, contrary to the usual intuition, the uncertainty on the detector momentum does not al- ways play a relevant role in decoherence, at least as long as the detector particle is non-relativistic, since its contribution is suppressed by a factor proportional to p/M. Finally, we also notice the emergence of a new quantum effect: the oscillations do not starts immediately but only only starts a very short time after the first neutrinos arrives; however, since the time window when this effect would be observable is extremely small, the precision required to measure such an effect is most likely well beyond the current technical capabilities

Working group WG1

Primary author: Prof. CIUFFOLI, Emilio (IMP, CAS) Presenter: Prof. CIUFFOLI, Emilio (IMP, CAS) Session Classification: WG 1

September 30, 2021 Page 145 NuFact 2021: The … / Report of Contributions Neutrinolss Double Beta Decay se …

Contribution ID: 185 Type: Oral

Neutrinolss Double Beta Decay search with CUPID Thursday, 9 September 2021 17:00 (20 minutes)

CUPID is a next-generation tonne-scale bolometric neutrinoless double beta decay experiment to probe the Majorana nature of neutrinos and discover Lepton Number Violation if the effective neutrino mass is greater than 10 meV. CUPID will be built on experience, expertise and lessons learned in CUORE, and will be installed in the current CUORE infrastructure in the Gran Sasso underground laboratory. The CUPID detector technology, successfully tested in the CUPID-Mo experiment, is based on scintillating bolometers of Li2MoO4 enriched in the isotope of interest 100Mo. In order to achieve its ambitious science goals, CUPID aims to reduce the backgrounds in the region of interest by a factor 100 with respect to CUORE. This performance will be achieved by introducing the high efficiently alpha/beta discrimination demonstrated bythe CUPID-0 and CUPID-Mo experiments, and using a high transition energy double beta decay nucleus such as 100Mo to minimize the impact of the gamma background. CUPID will consist of about 1500 hybrid heat-light detectors for a total isotope mass of 250 kg. The CUPID scientific reach is supported by a detailed and safe background model that uses CUORE, CUPID-Mo and CUPID-0 results. The required performance in terms of energy resolution, alpha rejection factor and crystal purity have already been demonstrated and will be presented.

Working group WG5

Presenter: BELLINI, Fabio (University of Rome) Session Classification: WG 5

September 30, 2021 Page 146 NuFact 2021: The … / Report of Contributions First Data from the Commissioned …

Contribution ID: 187 Type: Poster

First Data from the Commissioned ICARUS Side Cosmic Ray Tagger

The ICARUS detector will operate at shallow depth and therefore it will be exposed to the fullsur- face flux of cosmic rays. This poses a problematic background to the electron neutrino appearance analysis. A direct way to suppress this background is to surround the cryostat with a detector capable of tagging incident cosmic muons with high efficiency (~95\%). A cosmic ray tagger (CRT) consists of an organic plastic scintillator, wavelength-shifting fibers, readout by silicon photomultipliers and multi-anode photomultiplier tubes. The installation of the ICARUS Cosmic Ray Tagger (CRT) side wall hardware is complete and commissioning of the system is underway. In this talk, I will present the status of the integration of the CRT readout and analysis of first data from the commissioned side CRT system.

Working group WG6

Primary author: BEHERA, Biswaranjan (Colorado State University) Presenter: BEHERA, Biswaranjan (Colorado State University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 147 NuFact 2021: The … / Report of Contributions DUNE long-baseline oscillation ph …

Contribution ID: 188 Type: Oral

DUNE long-baseline oscillation physics sensitivity Wednesday, 8 September 2021 13:24 (22 minutes)

The Deep Underground Neutrino Experiment (DUNE) is a next generation, long-baseline neutrino oscillation experiment which will utilize high-intensity νµ and ν¯µ with peak neutrino energies of ~2.5 GeV produced at Fermilab, over a 1285 km baseline, to carry out a detailed study of neutrino mixing. The neutrino beam has an initial design intensity of 1.2 MW, but has a planned upgradeto 2.4 MW. The unoscillated neutrino flux will be sampled with a near detector complex at Fermilab, and oscillated at the DUNE far detector at the Sanford Underground Research Facility, which will ultimately consist of four modules each containing a total liquid argon mass of 17 kt.

Here, the long-baseline neutrino oscillation sensitivity of DUNE is determined, using a full simulation, reconstruction, and event selection of the far detector and a full simulation and parameterized analysis of the near detector. Detailed uncertainties due to the flux prediction, neutrino interaction model, and detector effects are included. DUNE is able to resolve the neutrino mass ordering to a 5σ precision, for all values of the CP-phase, after a 66 kiloton-megawatt-year exposure (kt-MW- yr). It has the potential to observe charge-parity violation in the neutrino sector to a precision of 3σ (5σ) after an exposure of 197 (646) kt-MW-yr, for 50% of all values of the CP-violating phase. DUNE’s sensitivity to other oscillation parameters of interest have been explored.

Working group WG1

Primary author: WILKINSON, Callum David (Lawrence Berkeley National Lab. (US)) Presenter: MARSHALL, Chris (University of Rochester) Session Classification: WG 1

September 30, 2021 Page 148 NuFact 2021: The … / Report of Contributions Deep Learning Neutrino Event Re …

Contribution ID: 189 Type: Oral

Deep Learning Neutrino Event Reconstruction at DUNE Thursday, 9 September 2021 15:20 (20 minutes)

DUNE is a next-generation international neutrino experiment designed to measure CP violation in neutrinos and the neutrino mass hierarchy, among other BSM goals. DUNE far detector modules are based on the liquid argon time projection chamber (LArTPC) technology, which offers an excellent spatial resolution and potentially allows excellent identification of individual particles. However, neutrino event reconstruction in LArTPC is challenging due to the complexity of the detector and topologies of the events. To address these issues, neutrino events can be reconstructed directly from images of neutrino interactions with deep learning methods, such as Convolutional Neural Networks (CNNs). In this talk, I will discuss the development of deep-learning-based reconstruction methods at DUNE. Compared with traditional reconstruction, these methods show a significantly better performance in simulated DUNE data.

Working group WG1

Primary author: BIAN, Jianming (University of California Irvine (US)) Presenter: BIAN, Jianming (University of California Irvine (US)) Session Classification: WG 1 + WG 6 (WG1 zoom)

September 30, 2021 Page 149 NuFact 2021: The … / Report of Contributions Measurement of pion-argon inelas …

Contribution ID: 190 Type: Poster

Measurement of pion-argon inelastic cross section in ProtoDUNE-SP

The Deep Underground Neutrino Experiment (DUNE) is a leading-edge, international experiment for neutrino science and proton decay studies. ProtoDUNE-SP is one of two liquid argon time projection chambers (LArTPCs) built at CERN using the single phase technology to test the design and robustness of the detector components for DUNE. ProtoDUNE-SP accumulated over 4 million beam events in the H4-VLE beam line at CERN, including pions, protons, kaons and electrons from 0.3 to 7 GeV/c, which are being used to study the detector response to different particles and to measure the hadron-argon cross sections. This talk will discuss the progress on the measurement of the pion-argon inelastic cross section using ProtoDUNE-SP data.

Working group WG2

Primary author: YANG, Tingjun (Fermi National Accelerator Lab. (US)) Presenter: YANG, Tingjun (Fermi National Accelerator Lab. (US)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 150 NuFact 2021: The … / Report of Contributions Cross Section Measurement of Pio …

Contribution ID: 191 Type: Oral

Cross Section Measurement of Pion Absorption in ProtoDUNE Single Phase Detector at CERN Thursday, 9 September 2021 16:00 (20 minutes)

Abstract: The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber with an active volume of 7.2×6.0×6.97m^3. The ProtoDUNE-SP detector also serves as a prototype for the first far detector module of the Deep Underground Neutrino Experiment (DUNE). Acharged particle beam was specifically built to deliver multiple particles including charged pions, kaons, protons, muons and electrons with momenta in the range 0.3 GeV/c to 7 GeV/c. The ProtoDUNE- SP detector also serves as a prototype for the first far detector module of the Deep Underground Neutrino Experiment. We present algorithms for particle identification (protons, pions, and showers) and cross section measurement of pion absorption in the protoDUNE pion beam events with a slicing method. This is the first measurement of pion absorption with pion momenta greater than 350 MeV.

Working group WG2

Primary author: JIANG, Libo (Virginia Poly. Inst. & State Univ. (US)) Presenter: JIANG, Libo (Virginia Poly. Inst. & State Univ. (US)) Session Classification: WG 2

September 30, 2021 Page 151 NuFact 2021: The … / Report of Contributions The role of leptonic CPV phases in…

Contribution ID: 192 Type: Poster

The role of leptonic CPV phases in cLFV observables

In models where the Standard Model is extended by Majorana fermions, interference effects due to the presence of CP violating phases have been shown to play a crucial role in lepton number violating processes. However, important interference effects can also arise in lepton number conserving, but charged lepton flavour violating (cLFV) transitions and decays. In this work we show that in the presence of CP violating (Dirac and Majorana) phases important interference effects might arise, with a striking impact for the predicted rates of cLFV observables. We explore the interference effects in several cLFV observables, carrying for the first time athor- ough analysis of the different observables and the implications for future observation. We show in this talk how the presence of leptonic CP violating phases might lead to a loss of correlation between observables (typically present in simple SM extensions via heavy sterile fermions), or even to the suppression of certain channels; these effects can be interpreted as suggestive of non-vanishing phases.

Working group WG4

Primary author: KRIEWALD, Jonathan (LPC Clermont) Co-authors: ABADA, Asmaa; TEIXEIRA, Ana M. (LPC Clermont) Presenter: KRIEWALD, Jonathan (LPC Clermont) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 152 NuFact 2021: The … / Report of Contributions Beyond Tree Level at Neutrino Ex …

Contribution ID: 193 Type: Oral

Beyond Tree Level at Neutrino Experiments Thursday, 9 September 2021 16:00 (20 minutes)

One of the most important achievements in the field of particle physics is the discovery of neutrino oscillations. Despite already awarded Nobel Prize, neutrino oscillation experiments still have a lot to offer, primarily the discovery of CP violation in the lepton sector is anticipated. Theparame- ters entering the expression for neutrino oscillation probabilities are neutrino mixing parameters and mass squared differences. In this talk, we argue that neutrino mixing parameters atproduc- tion and detection do not necessarily need to be equivalent since such parameters are subject to renormalization group evolution and the process of neutrino production and detection occurs at different energies.In this talk we discuss this in the frame of an UV compete model; inparticu- lar we demonstrate that quantum effects can yield relevant observable effects at various neutrino experiments. As an example, we consider high-energy astrophysical neutrinos at IceCube and show that neutron decay production mechanism, that is considered to be strongly disfavored by present data, becomes viable if the significant renormalization group effects are present. Wealso consider terrestrial experiments and show that the mismatch of neutrino parameters at production and detection can induce large effects at T2K and NOvA.

Working group WG5

Primary author: BRDAR, Vedran (MPIK Heidelberg) Presenter: BRDAR, Vedran (MPIK Heidelberg) Session Classification: WG 5

September 30, 2021 Page 153 NuFact 2021: The … / Report of Contributions Measurements of Neutrino Interac …

Contribution ID: 194 Type: Poster

Measurements of Neutrino Interactions with Electrons in the Final State in the NOvA Near Detector

NOvA is a long-baseline accelerator neutrino experiment primarily designed to measure neutrino oscillations. NOvA utilizes two functionally-identical detectors that lie 14.6 mrad off-axis from the NuMI neutrino beam. The near detector, positioned 1 km downstream of the beam target, provides an excellent platform to perform high-statistics measurements of neutrino cross sections and associated physics. There are few measurements of electron neutrino and electron antineutrino charged current interactions at the GeV scale. Furthermore one of the dominant sources of systematic uncertainties in all neutrino cross section measurements arises from the flux prediction, for which the neutrino-electron elastic scattering can provide an in-situ constraint benefiting from its accurately calculated cross section. We present the first-ever measurement of a double- differential electron neutrino charged-current cross section, and the status of the measurement of the neutrino-electron elastic scattering in the NOvA near detector. Plans for future measurements with electron antineutrinos are also presented.

Working group WG2

Primary author: Dr WU, Wenjie (University of California, Irvine) Presenter: Dr WU, Wenjie (University of California, Irvine) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 154 NuFact 2021: The … / Report of Contributions Detecting reactor antineutrinos wi …

Contribution ID: 195 Type: Oral

Detecting reactor antineutrinos with a liquid argon scintillating bubble chamber Tuesday, 7 September 2021 16:40 (20 minutes)

Nuclear reactors offer a great opportunity to study neutrinos due to their high antineutrino flux, but their detection through coherent elastic neutrino-nucleus scattering (CEvNS) is challenging given the need for sub-keV thresholds and great background identification.

In this talk we will discuss the physics potential of a liquid argon scintillating bubble chamber, a novel CEvNS reactor detector currently under construction by the SBC collaboration. With a one- year exposure, a 100 kg chamber placed at 30 m from a 2 GWth power reactor has the potential to achieve world-leading sensitivities.

Working group WG2

Primary authors: FLORES, Luis; PEINADO, Eduardo (Universidad Nacional Autonoma de Mex- ico); VAZQUEZ-JAUREGUI, Eric (IF-UNAM); ALFONSO-PITA, Ernesto (IF-UNAM) Presenter: FLORES, Luis Session Classification: WG 2 + WG 6 (WG2 zoom)

September 30, 2021 Page 155 NuFact 2021: The … / Report of Contributions Exploring generalized neutrino int …

Contribution ID: 196 Type: Oral

Exploring generalized neutrino interactions at the COHERENT Thursday, 9 September 2021 14:20 (18 minutes)

In this talk, we will discuss the potential to prove “generalized neutrino interactions”, exotic new physics interactions beyond the Standard Model, in the coherent-elastic neutrino-nucleus scattering (CEνNS) experiments in light of the latest COHERENT- CsI, and LAr data. We will discuss that how CEνES processes could constrain these exotic new physics effective couplings, and the related phenomenology. Finally, a model realization will be presented that can lead to such exotic couplings.

Working group WG2

Primary author: Dr NATH, Newton (Instituto de Fisica, National Autonomous University of Mex- ico)

Co-authors: Dr FLORES, Luis J. (Instituto de Fisica, National Autonomous University of Mexico); Dr PEINADO, Eduardo (Instituto de Fisica, National Autonomous University of Mexico)

Presenter: Dr NATH, Newton (Instituto de Fisica, National Autonomous University of Mexico)

Session Classification: WG 2

September 30, 2021 Page 156 NuFact 2021: The … / Report of Contributions Measurement of Neutral Current E …

Contribution ID: 197 Type: Poster

Measurement of Neutral Current Elastic Cross Section in MicroBooNE

The MicroBooNE experiment is an 85 ton active volume liquid-argon time projection chamber located in the Fermilab Booster Neutrino Beamline. MicroBooNE’s ability to detect low-energy protons allows us to study single proton events with a four-momentum transfer squared, Q2, as low as 0.10 GeV2. We present a measurement of the flux-averaged neutral-current elastic differential cross section for neutrinos scattering on argon as a function ofQ2, as well as our plan to extract the strange quark contribution to the axial form factor. This is not only the least-constrained contribution to the neutral-current elastic scattering cross section but is also crucial for understanding the strange quark contribution to the proton spin.

Working group WG2

Primary author: REN, Lu Presenter: REN, Lu Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 157 NuFact 2021: The … / Report of Contributions Dark-sector physics at Belle II

Contribution ID: 198 Type: Poster

Dark-sector physics at Belle II

The Belle II experiment at the asymmetric e+e− collider, SuperKEKB, is a substantial upgrade of the Belle/KEKB experiment. Belle II aims to record 50 ab−1 of data over the course of the project. During the first physics runs in 2018-2020, around 100fb−1 of data were collected. These early data include specifically-designed low-multiplicity triggers which allow a variety of searches for light dark matter and dark-sector mediators in the GeV mass range.

This talk will present the very first world-leading physics results from Belle II: searches forthe invisible decays of a new vector Z’, and visible decays of an axion-like particle; as well as the near- term prospects for other dark-sector searches. Many of these searches are competitive with the data already collected or the data expected in the next few years of operation.

Working group WG5

Primary author: LIBBY, James (Indian Institute of Technology Madras (IN)) Presenter: LIBBY, James (Indian Institute of Technology Madras (IN)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 158 NuFact 2021: The … / Report of Contributions Belle II experiment: status and pro …

Contribution ID: 199 Type: Oral

Belle II experiment: status and prospects Wednesday, 8 September 2021 15:00 (20 minutes)

The Belle II experiment at the SuperKEKB energy-asymmetric e+e− collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The target luminosity of the machine is 6 × 1035 cm−2s−1 and the Belle II experiment aims to record 50 ab−1 of data, a factor of 50 more than its predecessor. With this data set, Belle II will be able to measure the Cabibbo-Kobayashi- Maskawa (CKM) matrix, the matrix elements and their phases, with unprecedented precision and explore flavor physics with B and charmed mesons, and τ leptons. Belle II has alsoaunique capability to search for low mass dark matter and low mass mediators. We also expect exciting results in quarkonium physics with Belle II. In this presentation, we will review the status of the Belle II detector, the results of the planned measurements with the full available Belle II data set, and the prospects for physics at Belle II.

Working group WG5

Primary author: LIBBY, James (Indian Institute of Technology Madras (IN)) Presenter: PASSERI , Antonio Session Classification: WG 5

September 30, 2021 Page 159 NuFact 2021: The … / Report of Contributions The Water Cherenkov Test Experi …

Contribution ID: 200 Type: Oral

The Water Cherenkov Test Experiment at CERN Wednesday, 8 September 2021 16:18 (18 minutes)

Water Cherenkov neutrino experiments have played a crucial role in neutrino discoveries over the years, and provide a well established and affordable way to instrument large target masses. The largest uncertainty in the most recent T2K oscillation results are from the Super-Kamiokande detector systematic errors in the oscillated event samples. As neutrino experiments move from discovery to precision measurements, a comprehensive understanding of water Cherenkov detectors becomes increasingly important. The physics and technological development studies that WCTE will be capable of will aid future neutrino experiments such as Hyper-Kamiokande, ESSnuSB and THEIA.

The Water Cherenkov Test Experiment (WCTE) is a small scale water Cherenkov detector which will be located in the T9 experimental area at CERN. WCTE will be used to study the water Cherenkov detector response to hadron, electron and muon beams, and will use new photosensor technologies. The detector will be instrumented with multi-PMT modules consisting of19, 3-inch PMTs each, and will test a newly developed calibration deployment system. Calibration techniques with known particle fluxes will be used to demonstrate a 1% level calibration forGeV scale neutrino interactions. Other measurements will include those of Cherenkov light production, pion scattering and secondary neutrino production, to provide direct inputs to the T2K andSuper- Kamiokande experiments. This talk will describe the WCTE detector design, the newly developed mPMT and calibration hardware and the all important physics program.

Working group WG1

Primary author: ANTHONY, Lauren (Imperial College London) Presenter: ANTHONY, Lauren (Imperial College London) Session Classification: WG6

September 30, 2021 Page 160 NuFact 2021: The … / Report of Contributions Tau Neutrino Physics at DUNE

Contribution ID: 201 Type: Oral

Tau Neutrino Physics at DUNE Thursday, 9 September 2021 16:15 (15 minutes)

Over the last two decades, the experimental understanding of three flavor oscillations has improved dramatically. However, almost all of our understanding of neutrino physics is due to the study of electron and muon neutrinos, and the tau neutrino remains the least well-studied particle in the Standard Model. The Deep Underground Neutrino Experiment (DUNE) is a next-generation neutrino experiment currently under construction. DUNE will consist of two high-resolution neutrino interaction imaging detectors exposed to the world’s most intense neutrino beam with the Near Detector at Fer- milab and the Far Detector 1,300 km away in the Sanford Underground Research Facility in South Dakota. DUNE is therefore ideally suited to collect a high-statistics, high-purity sample of tau neutrinos to significantly improve our understanding of electroweak interactions and will offer crucial tests of the three-flavor paradigm. This capability can be further improved using apro- posed high-energy beam mode.

In this talk, I will discuss prospects for analyses using tau neutrinos to assess the validity of the three-flavor model, search for short-baseline sterile-driven tau neutrino appearance in theNear Detector, and constrain the currently unmeasured F4 and F5 structure functions.

Working group WG1

Primary author: AURISANO, Adam Jude (University of Cincinnati (US)) Presenter: AURISANO, Adam Jude (University of Cincinnati (US)) Session Classification: WG 1

September 30, 2021 Page 161 NuFact 2021: The … / Report of Contributions ESSnuSB detector performance

Contribution ID: 202 Type: Poster

ESSnuSB detector performance

ESSnuSB is a design study for a high precision future experiment at ESS, which will measure CP violation in the lepton sector at the second neutrino oscillation maximum. The experiment is based on a neutrino superbeam and will feature both near and far detectors. This talk will report on the baseline configuration of the near and far detectors. The progress of design and simulation ofthe far Cherenkov detectors will be presented in more detail, focusing on the migration matrices and detector efficiencies for detecting relevant neutrino flavors.

Working group WG1

Primary author: ZORMPA, Olga (Nat. Cent. for Sci. Res. Demokritos (GR)) Presenter: ZORMPA, Olga (Nat. Cent. for Sci. Res. Demokritos (GR)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 162 NuFact 2021: The … / Report of Contributions NuMI Beam Monitoring Simulatio …

Contribution ID: 203 Type: Poster

NuMI Beam Monitoring Simulation and Data Analysis Status and Progress

With the Main Injector Neutrino Oscillation Search (MINOS) experiment decommissioned, muon and hadron monitors became an important diagnostic tool for the NuMI Off-axis νμ Appearance (NOvA) experiment at Fermilab to monitor the Neutrinos at the Main Injector (NuMI) beam. The goal of this study is to establish correlations between muon monitor and other beamline detector signals and upstream and downstream beam and lattice parameters in order to monitor and improve neutrino beam quality. We report on the progress of the beam data analysis and comparison with the simulation results.

Working group WG3

Primary author: YU, Yiding (Illinois Institute of Technology) Co-authors: SNOPOK, Pavel (IIT/Fermilab); SZTUC, Artur (Imperial College London); WICKRE- MASINGHE, Don Athula; BOSTAN, Nilay (University of Iowa); Mr CARROLL, Thomas (University of Wisconsin); LANG, Karol (Fermi National Accelerator Laboratory); Prof. THOMAS, Jennifer (Univer- sity of Wisconsin / University College of London); YONEHARA, Katsuya (Fermilab) Presenter: YU, Yiding (Illinois Institute of Technology) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 163 NuFact 2021: The … / Report of Contributions Exploring Earth’s Matter Effect in…

Contribution ID: 204 Type: Poster

Exploring Earth’s Matter Effect in High-Precision Long-Baseline Experiments

A detailed understanding of Earth’s Matter effect is inevitable to correctly analyze the data from the upcoming high-precision long-baseline experiments to resolve the remaining fundamental un- knowns such as neutrino mass ordering, leptonic CP violation and precision measurements of the oscillation parameters. In this paper, for the first time, we explore in detail the capability ofDeep Underground Neutrino Experiment (DUNE) to establish the matter oscillation as a function of δCP and θ23 by excluding the vacuum oscillation. We find that DUNE is sensitive to Earth’s matter effect at more than 2σ C.L. irrespective of the choice of the oscillation parameters. The relative 1σ precision in the measurement of line-averaged constant Earth matter density (ρavg ) for maximal CP-violating choices of δCP is around 10% to 15% depending on the choice of neutrino mass order- ◦ ◦ ing. If δCP turns out to be around -90 or 90 , the precision in measuring ρavg is better in DUNE as compared to what are achievable from the Super-K atmospheric data, combined data from Solar and KamLand, and full exposure of T2K and NOνA. We also observe new interesting degeneracies among ρavg , δCP , and θ23 and notice that the present uncertainty in δCP dilutes more the measurement of ρavg compared to θ23 . To lift these degeneracies, we incorporate the prospective data from the upcoming Tokai to Hyper-Kamiokande (T2HK) and T2HK with a second detector in Korea (T2HKK) experiments. With a relatively shorter baseline and high statistics at first oscillation maximum, T2HK offers unprecedented sensitivity to establish genuine CP violation and to measure δCP, whereas in the T2HKK setup, the second detector in Korea with a roughly four times longer baseline is more sensitive to Earth’s matter effect and provides crucial information on δCP working at second oscillation maximum. We explore interesting complementarities among these possible setups and find that the combined data from DUNE and T2HKK can establish Earth’s matter effect at more than 5σ C.L. irrespective of the choices of mass ordering, δCP, and θ23.

Working group WG1

Primary author: Ms SINGH, Masoom (Institute of Physics and Utkal University) Co-author: Dr AGARWALLA, Sanjib Kumar (Institute of Physics, Bhubaneswar) Presenter: Ms SINGH, Masoom (Institute of Physics and Utkal University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 164 NuFact 2021: The … / Report of Contributions Exploring Matter Effect and Assoc …

Contribution ID: 205 Type: Oral

Exploring Matter Effect and Associated Degeneracies at DUNE Thursday, 9 September 2021 16:45 (15 minutes)

Matter effect plays a pivotal role in the upcoming Deep Underground Neutrino Experiment (DUNE) to address pressing fundamental issues such as leptonic CP violation, neutrino mass hierarchy, and precision measurements of the oscillation parameters in the precision era. In this paper, for the first time, we explore in detail the capability of DUNE to establish the matter oscillationasa function of δCP and θ23 by excluding the vacuum oscillation. With the optimized neutrino beam design and using an exposure of 300 kt·MW·years, DUNE can confirm the presence of Earth’s matter effect at2σ C.L. irrespective of the choices of hierarchy, δCP, and θ23. Moreover, DUNE can rule out the vacuum oscillation at 3σ (5σ ) significance with a δCP coverage of 64% (46%) for normal hierarchy and maximal θ23, whereas for inverted hierarchy, the δCP coverage is 82% (43%). The relative 1σ precision in the measurement of line-averaged constant Earth matter density (ρavg) for maximal CP-violating choices of δCP is around 10% to 15% depending on the choice of neutrino mass hierarchy. The same for CP-conserving values of δCP is around 25% to 30%. We ◦ ◦ find that if δCP turns out to be around -90 or 90 , the precision in measuring ρavg in DUNE is better than that one can achieve using the atmospheric data from Super-Kamiokande, combined data from Solar and KamLand, and from the full exposure of T2K and NOνA. We also identify new 2 degeneracies in (ρavg-δCP) and (ρavg-sin θ23) planes and notice that the uncertainty in δCP affects the measurement of ρavg more than that of θ23. A detailed understanding of these degeneracies are essential to correctly assess the outcome of DUNE.

Working group WG1

Primary authors: SINGH, Masoom (Institute of Physics and Utkal University); C, SOUMYA (In- stitute of Physics Bhubaneswar); AGARWALLA, Sanjib Kumar (Institute of Physics, Bhubaneswar)

Presenter: C, SOUMYA (Institute of Physics Bhubaneswar) Session Classification: WG 1

September 30, 2021 Page 165 NuFact 2021: The … / Report of Contributions A two-Higgs doublet solution to th …

Contribution ID: 206 Type: Poster

A two-Higgs doublet solution to the LSND, MiniBooNE and muon g − 2 anomalies

We show that one of the simplest extensions of the Standard Model, the addition of a second Higgs doublet, when combined with a dark sector singlet scalar, allows us to: i) explain the long-standing anomalies in the Liquid Scintillator Neutrino Detector (LSND) and MiniBooNE (MB) while main- taining compatibility with the null result from KARMEN, ii) obtain, in the process, a portal to the dark sector, and iii) comfortably account for the observed value of the muon g − 2. Three singlet neutrinos allow for an understanding of observed neutrino mass-squared differences via a Type I seesaw, with two of the lighter states participating in the interaction in both LSND and MB. We obtain very good fits to energy and angular distributions in both experiments. We explain features of the solution presented here and discuss the constraints that our model must satisfy. We also mention prospects for future tests of its particle content.

Working group WG5

Primary author: ROY, Samiran (Physical Research Laboratory) Presenter: ROY, Samiran (Physical Research Laboratory) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 166 NuFact 2021: The … / Report of Contributions Calibration Strategy of the JUNO E …

Contribution ID: 207 Type: Oral

Calibration Strategy of the JUNO Experiment Thursday, 9 September 2021 14:20 (20 minutes)

The Jiangmen Underground Neutrino Observatory (JUNO) central detector (CD) would bethe world’s largest liquid scintillator (LS) detector to probe multiple physics goals, including determining neutrino mass ordering, measuring solar neutrino, detecting supernova neutrino, etc. With an unprecedented 3% effective energy resolution and an energy nonlinearity better than 1% requirement to determine neutrino mass ordering, the calibration system, including Auto Calibration Unit (ACU), Cable Loop System (CLS), Guide Tube Calibration System (GTCS), and Remotely Operated Vehicle (ROV), is designed with deploying multiple radioactive sources in various locations inside/outside of the CD. The strategy of the JUNO calibration system has been optimized basedon Monte Carlo simulation results from calibration sub-systems data. This talk will present details of calibration strategy, including the JUNO calibration system design and simulation results, which help achieve an excellent energy resolution better than 3% between 1 MeV and 8 MeV.

Working group WG1

Primary author: MENG, Yue (Shanghai Jiao Tong University) Presenter: MENG, Yue (Shanghai Jiao Tong University) Session Classification: WG 1 + WG 6 (WG1 zoom)

September 30, 2021 Page 167 NuFact 2021: The … / Report of Contributions New Approaches of first selection …

Contribution ID: 208 Type: Oral

New Approaches of first selection for Neutron Tagging in Hyper-Kamiokande Thursday, 9 September 2021 15:00 (20 minutes)

Hyper-Kamiokande (HK) is a next-generation neutrino experiment with a large-scale water-Cherenkov far detector approved in Japan. Its physics program addresses some of the most challenging questions in fundamental physics like the precise measurement of the neutrino oscillation parameters (solar, atmospheric, accelerator), search for leptonic CP violation, the investigation of astrophysical neutrino sources; supernovae and Diffused Supernova Bursts (DSNB), and the search for proton and exotic nucleon decays. Since over a decade, HK’s predecessor, Super-Kamiokande, has proven the importance of neutron- tagging in a large variety of measurements, improving the limits of DSNB and proton-decay searches, and enhancing the sensitivity to the atmospheric oscillation parameters. The neutrons produced in the interaction of an HK event thermalize and are eventually captured by hydrogen, emitting a 2.2 MeV photon. This signal is too weak for HK’s trigger threshold; therefore, the delayed neutron signal is searched by scanning all the hit PMTs of the prompt signal. The newly developed method feeds this information into the neural network, providing asoutput which of the hit PMTs are more likely to receive the neutron capture signal. This not only improves the candidate selection efficiency and purity, but also provides valuable information abouthit PMTs, identifying the most relevant ones for the subsequent fitting process.

In this presentation the details, features and performance of this method in the context of the Hyper-Kamiokande experiment will be shown.

Working group WG1

Primary author: Dr SUAREZ GOMEZ, Sergio Luis (University of Oviedo) Co-authors: Dr FERNÁNDEZ MENÉNDEZ, Pablo (University of Liverpool); Dr SANTOS, Jesús Daniel (Universidad de Oviedo)

Presenter: Dr SUAREZ GOMEZ, Sergio Luis (University of Oviedo) Session Classification: WG 1 + WG 6 (WG1 zoom)

September 30, 2021 Page 168 NuFact 2021: The … / Report of Contributions Recent results of the DANSS exper …

Contribution ID: 209 Type: not specified

Recent results of the DANSS experiment Wednesday, 8 September 2021 13:24 (22 minutes)

We present new results of the DANSS experiment on the searches for sterile neutrinos. They are based on approximately 4 million of inverse beta decay events collected at 10.9, 11.9 and 12.9 meters from the reactor core of the 3.1 GW Kalinin Nuclear Power Plant in Russia. The neutrino spectrum dependence on the fuel composition is also presented. We have also measured the reactor power using the IBD event rate during 38 months with the statistical accuracy 1.5% in 2 days and with the relative systematic uncertainty of about 0.5%. Plans for the DANSS upgrade will be presented. This upgrade should allow DANSS to test the Neutrino-4 claim of observation of sterile neutrinos.

Working group WG5

Primary author: SKROBOVA, Nataliya (LPI RAS) Presenter: ALEKSEEV, Igor (Alikhanov Institute for Theoretical and Experimental Physics) Session Classification: WG 5

September 30, 2021 Page 169 NuFact 2021: The … / Report of Contributions Constraints on general neutrino in …

Contribution ID: 210 Type: Poster

Constraints on general neutrino interactions with a singlet fermion

The couplings between the neutrinos and a singlet fermion can be probed in both neutrino scattering experiments and dark matter direct detection experiments. In this talk, we discuss a detailed analysis of the general neutrino interactions with a singlet fermion at neutrino-electron scattering experiments. We obtain the constraints on the coupling coefficients of the scalar, pseudoscalar, vector, axialvector, tensor and electromagnetic dipole interactions from the CHARM-II, TEXONO and Borexino experiments. We also discuss the detection of sub-MeV DM absorbed by bound electron targets and illustrate that the vector coefficients preferred by XENON1T data are allowed by the neutrino-electron scattering experiments.

Working group WG5

Primary author: LIAO, Jiajun (Sun Yat-sen University) Presenter: LIAO, Jiajun (Sun Yat-sen University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 170 NuFact 2021: The … / Report of Contributions New sources of leptonic CP violati …

Contribution ID: 211 Type: Oral

New sources of leptonic CP violation at the long baseline experiments Wednesday, 8 September 2021 16:20 (20 minutes)

Neutrino Oscillations have been confirmed in the last twenty years by a large amount of dataand we are now entering in the precision era, when oscillation parameters are going to be determined with a great accuracy. However, current measurements still cannot exclude new physics scenarios like the presence of sterile neutrinos or Non Standard Interactions. We explore the capability of future long baseline experiments like DUNE to search for new sources of CP violation looking at the CP asymmetries of different oscillation channels. The accessibility of such measurements together with the large amount of oscillation data could in principle provide a simple but powerful method to seek for new physics effects.

Working group WG5

Primary authors: GIARNETTI, Alessio (Roma Tre University & INFN); MELONI, Davide (Univer- sity of Roma Tre)

Presenter: GIARNETTI, Alessio (Roma Tre University & INFN) Session Classification: WG 5

September 30, 2021 Page 171 NuFact 2021: The … / Report of Contributions Study of hierarchy-independent de …

Contribution ID: 212 Type: Poster

Study of hierarchy-independent determination of leptonic δCP at sub-GeV energies with long baseline neutrinos

The value of leptonic CP violation phase δCP and neutrino mass hierarchy are two of the current major open problems in neutrino oscillation physics. The quest to find the former is spearheaded by various accelerator-based long-baseline neutrino experiments sensitive to δCP . It is known that hierarchy-δCP ambiguity can affect the measurement of both parameters, and experiments are usually designed to have baselines and energies to eliminate this ambiguity. It is known from studies of sub-GeV atmospheric neutrinos that δCP can be determined irrespective of neutrino mass ordering at these energies. Here we explore the possibility of obtaining hierarchy independent measurement of δCP with sub-GeV ν and ν¯ events in accelerator based long-baseline experiments. Event rates are studied as a function of the energy (Eℓ) and direction (cos θℓ) of the final state lepton produced during charged current ν and ν¯ interactions.

Working group WG1

Primary author: S PRABHU, Yashwanth Presenter: S PRABHU, Yashwanth Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 172 NuFact 2021: The … / Report of Contributions The intermediate water Cherenkov …

Contribution ID: 214 Type: Oral

The intermediate water Cherenkov detector for the Hyper-Kamiokande experiment Thursday, 9 September 2021 16:30 (15 minutes)

The Hyper-Kamiokande (HK) experiment will perform a broad physics program including the study of long-baseline neutrino oscillations. This will be achieved by detecting neutrinos produced at an upgraded 1.3 MW beam at the J-PARC with a far water Cherenkov detector which will have about 8 times larger detector volume than that of the Super-Kamiokande detector, following the successful T2K experiment. To make full use of the high statistics data, an accurate prediction of neutrino interaction rates at the HK detector is essential. For this purpose, an intermediate water Cherenkov detector (IWCD) is planned as one of the HK’s near detectors, which will use a kiloton scale water Cherenkov detector to be located at around 1 km from the neutrino source at J-PARC. The unique feature of IWCD enables it to move vertically relative to the beam direction, changing the energies of neutrinos impinging the detector. By collecting data at various vertical positions, IWCD will study the relation between neutrino energy and products of neutrino interactions directly. The detector is also planned to be operated with Gd2(SO4)3 loading, allowing IWCD to measure neutrons accompanying neutrino interactions. The measurement will provide direct inputs to analyses at the HK detector that utilize information about these neutrons to reduce systematic uncertainties on neutron production. This talk will describe the IWCD design and its physics program, including key technology, new photosensor module, and challenges for the IWCD measurements.

Working group WG1

Primary author: AKUTSU, Ryosuke (TRIUMF) Presenter: AKUTSU, Ryosuke (TRIUMF) Session Classification: WG 1

September 30, 2021 Page 173 NuFact 2021: The … / Report of Contributions Exploring environmentally induce …

Contribution ID: 215 Type: Poster

Exploring environmentally induced decoherence effect on neutrino oscillation probabilities

We discuss the effect of environmental decoherence on matter-effective neutrino oscillation probabilities. Decoherence is a phenomenon observed in systems interacting with the environment. We treat the neutrinos as an open quantum system and by using the Lindblad Master equation we study the evolution of neutrino states. The matter effect is incorporated for neutrinos passing through matter with the help of the Cayley-Hamilton formalism.

In this work, we have developed a general algorithm that attempts to solve the Lindblad Master Equation to compute the neutrino oscillation probabilities in presence of environmental decoherence. We extensively validate the algorithm and explore how environmentally induced decoherence can potentially affect the oscillation probabilities, particularly in the long-baseline sector.

Working group WG5

Primary authors: Mr SARKER, Arnab (Tezpur University); Ms BHUYAN, Harshita (Tezpur Uni- versity); Dr DEVI, Moon Moon (Tezpur University, India) Presenter: Mr SARKER, Arnab (Tezpur University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 174 NuFact 2021: The … / Report of Contributions Probing the effects of scalar Non S…

Contribution ID: 216 Type: Oral

Probing the effects of scalar Non Standard Interactions at Long Baseline Experiments Wednesday, 8 September 2021 16:40 (20 minutes)

Neutrino oscillations which essentially confirms neutrinos have non zero masses, is the first hintof physics beyond the Standard Model(SM). When neutrinos propagates through matter it interacts with the matter via weak interactions mediating a W or Z bosons. The study of Beyond Standard Model (BSM) physics often comes with some additional unknown coupling of neutrinos called non standard interactions(NSIs). Wolfenstein was the first to point out this type of NSIs of neutrinos with a vector field mediated by a vector boson namely vector NSI. There is also a possibility of neutrinos to couple with scalar field, which can offer rich phenomenology in neutrino oscillations. This scalar NSI effect the neutrino mass matrix instead of appearing as a matter potential.Which makes its effect interesting to probe it further.

In this work, we have explored the effect of scalar NSI at Long Baseline (LBL) Experiment (DUNE). We found that the diagonal elements of scalar NSI matrix can have a significant impact on the oscillation probabilities of DUNE. Also, as it perturbs the neutrino mass term it can fake the CP effect in LBL experiments. As the mass correction scales linearly with the matter density scalarNSI can sense the matter density variation and LBL experiments are an excellent candidate to probe it. In addition, we also put up the possibility of probing it further to various neutrino mass models.

Working group WG5

Primary authors: Mr MEDHI, Abinash (Tezpur University); Dr DUTTA, Debajyoti (Assam Don Bosco University); Dr DEVI, Moon Moon (Tezpur University, India) Presenter: Mr MEDHI, Abinash (Tezpur University) Session Classification: WG 5

September 30, 2021 Page 175 NuFact 2021: The … / Report of Contributions Reactor antineutrino anomaly in li …

Contribution ID: 217 Type: Oral

Reactor antineutrino anomaly in light of recent flux model refinements Wednesday, 8 September 2021 12:40 (22 minutes)

We study the status of the reactor antineutrino anomaly in light of new reactor flux models from both conversion and summation methods. In order to unify the calculation of IBD yields for different model predictions, we recalculate IBD yields with 1-order Vogel-Beacom IBD cross section and PDG 2020 inputs at first. And then our global fitting work shows that both the reactor rate andfuel evolution data are consistent with the predictions from both the conversion model of Kopeikin et al. and the summation model of Estienne et al. We also apply the Kurchatov Institute (KI) measurement into the conversion model of Hayen et al. including forbidden transitions which can partially explain the shape anomaly, and the rate anomaly is decreasing. The convergence of these model predictions indicates the robustness for the solution to the reactor anomaly in terms of flux model refinements. Our work also implies that the rate anomaly might stem from an inappropriate normalization of ILL measurements if the KI measurement is confirmed.

Working group WG5

Primary authors: GIUNTI, Carlo (INFN); TERNES, Christoph Andreas (INFN, Sezione di Torino); LI, Yufeng (Institute of High Energy Physics, Chinese Academy of Sciences); XIN, Zhao (Institute of High Energy Physics)

Presenter: XIN, Zhao (Institute of High Energy Physics) Session Classification: WG 5

September 30, 2021 Page 176 NuFact 2021: The … / Report of Contributions JUNO Detector Design and Status

Contribution ID: 218 Type: Poster

JUNO Detector Design and Status

The Jiangmen Underground Neutrino Observatory (JUNO) is a next generation multipurpose liquid scintillator being built in China. It will address a wide range of topics in neutrino physics: the determination of the neutrino mass ordering and the sub-percent measurement of three oscillation parameters from reactor neutrino oscillations, detection of solar, atmospheric and supernova neutrinos as well as the search for physics beyond the Standard Model. The JUNO detector design is optimised towards the determination of the neutrino mass ordering by reaching an unprecedented energy resolution and a low background. The over 50-meter wide experimental hall, which was recently successfully dug out, is located under about 700 m of granite overburden. The center of the instrument consists of a 35.4-meter diameter acrylic vessel containing 22 kt of LAB-based liquid scintillator, making it the largest liquid scintillator detector in the world. The spherical detector is submerged in a water pool shielding doubling as a water Cherenkov detector which, along with a top tracker above it, serves to precisely reconstruct and veto atmospheric muons. Surrounding the vessel are 17612 20” photomultiplier tubes (PMTs) and 25600 3” PMTs, which will collect the light induced by neutrinos interacting in the detector. This talk presents the detector design and construction status of JUNO, which is expected to start taking data in 2023.

Working group WG6

Primary author: COLOMER MOLLA, Marta (ULB, IIHE) Presenter: COLOMER MOLLA, Marta (ULB, IIHE) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 177 NuFact 2021: The … / Report of Contributions HOW HIGH SCHOOL TEACHERS …

Contribution ID: 219 Type: not specified

HOW HIGH SCHOOL TEACHERS CAN HELP NARROW THE GENDER GAP IN STEM EDUCATION

According to the United Nations, women constitute merely 14% of the total 280,000 scientists, engineers and technologists in research development institutions in India. In a survey of girl students aged 12 to 14 in India, 93 percent said they considered STEM as a career choice early on. How- ever, 38% of school girls expressed that they were less likely to take up a STEM career because the field is male-dominated. This is despite the fact that their performance in school is asgoodas,or even better than, boys’. The same is true for all over the world and this has been called the‘leaky pipeline’. Teachers can play a significant role in dissipating stereotypes in STEM education. The mostef- fective way to narrow the gender gap in STEM is to prevent it in the first place. By taking an early-age approach, I believe that the pipeline can be plugged before it begins to leak. I will discuss the reasons for the under-representation of women in STEM and how we can create educational interventions at the high school level itself to fix the ‘leaky pipeline’. This can be achieved by implementing strategies to make their classrooms a gender neutral safe space and ensuring equitable opportunities for boys and girls.

Working group Diversity, Education and Outreach

Primary author: KULSHRESTH, Niharika (The Scindia School) Presenter: KULSHRESTH, Niharika (The Scindia School) Session Classification: Special session

September 30, 2021 Page 178 NuFact 2021: The … / Report of Contributions Status of the ESSνSB Target Station

Contribution ID: 220 Type: not specified

Status of the ESSνSB Target Station Tuesday, 7 September 2021 16:40 (20 minutes)

The goal of the ESSνSB project is to discover and measure neutrino CP Violation withunprece- dented sensitivity. The associated ESSνSB H2020 Design Study is aimed at investigating and proposing a conceptual design of a new neutrino superbeam in Europe. The Target Station is a key element of this project, since it will produce a high intensity neutrino superbeam from a 5 MW proton beam delivered by the European Spallation Source at Lund. Work Package 4 of this project focuses on the optimization of the physics performance of the elements producing the beam, such as the targets and the magnetic horns, as well as on the technical aspects related to the Target Station design. The 5 MW proton beam will be split laterally into four 1.25 MW beams, eachwith 1.3 μs proton pulses and 14 Hz repetition rate, that will hit four separate targets inserted into four horns. The production of the neutrino beams under such conditions requires the development of technologies capable of working at a MW power scale, both for the target and for the other components of the target station facility. The status of the target station will be presented, with some possible future opportunities offered by this facility to develop complementary R&D.

This project has received funding from the European Union Horizon 2020 research and innovation program under grant agreement No 777419, and in part from the Deutsche Forschungsgemein- schaft (DFG, German Research Foundation) - Projektnummer 423761110 and from the PolishMin- istry of Science and Higher Education grant No W129/H2020/2018 from the resources for the years 2018-2021 for the realization of co-funded projects.

Working group WG3

Primary authors: BAUSSAN, Eric (Centre National de la Recherche Scientifique (FR)); BOU- QUEREL, Elian (Centre National de la Recherche Scientifique (FR)); CUPIAŁ, Piotr (AGH University of Science and Technology); D’ALESSI, Loris (Centre National de la Recherche Scientifique (FR)); DRA- COS, Marcos (Centre National de la Recherche Scientifique (FR)); EFTHYMIOPOULOS, Ilias (CERN); KOZIOŁ, Mateusz (AGH University of Science and Technology); ŁACNY, Łukasz (AGH University of Science and Technology); POUSSOT, Pascal (Centre National de la Recherche Scientifique (FR)); SNAMINA, Jacek (AGH University of Science and Technology); THOMAS, Julie (Centre National de la Recherche Scientifique (FR)); TOLBA, Tamer (Universität Hamburg (UHH)); WURTZ, Jacques (Centre National de la Recherche Scientifique (FR)); ZETER, Valeria (Centre National de la Recherche Scientifique (FR))

Presenters: CUPIAŁ, Piotr (AGH University of Science and Technology); ŁACNY, Łukasz (AGH University of Science and Technology) Session Classification: WG 3

September 30, 2021 Page 179 NuFact 2021: The … / Report of Contributions Evolution of Neutrino Mass- …

Contribution ID: 221 Type: Poster

Evolution of Neutrino Mass-Mixing Parameters in Matter with Non-Standard Interactions

We explore the role of matter effect in the evolution of neutrino oscillation parameters inthe presence of lepton-flavor-conserving and lepton-flavor-violating neutral-current non-standard interactions (NSI) of the neutrino. We derive simple approximate analytical expressions showing the evolution/running of mass-mixing parameters in matter in the presence of standard interactions (SI) and SI+NSI. We observe that only the NSI parameters in the (2,3) block, namely εµτ and (γ − β) ≡ (εττ − εµµ) affect the running of θ23. Though all the NSI parameters influence the evolution of θ13, εeµ and εeτ show a stronger impact at the energies relevant for DUNE. The so- ◦ lar mixing angle θ12 quickly approaches to ∼ 90 with increasing energy in both SI and SI+NSI 2 2 cases.The change in ∆m21,m is quite significant as compared to ∆m31,m both in SI and SI+NSI frameworks for the energies relevant for DUNE baseline. Flipping the signs of the NSI parameters alters the way in which mass-mixing parameters run with energy. We demonstrate the utility of our approach in addressing several important features related to neutrino oscillation such as: a) unraveling interesting degeneracies between θ23 and NSI parameters, b) estimating the resonance energy in presence of NSI when θ13 in matter becomes maximal, c) figuring out the required baselines and energies to have maximal matter effect in νµ → νe transition in the presence of different NSI parameters, and d) studying the impact of NSI parameters εµτ and (γ − β) on the νµ → νµ survival probability.

Working group WG5

Primary authors: Mr MASUD, Mehedi (Institute for Basic Science (IBS), Daejeon, South Korea); AGAR- WALLA,Sanjib Kumar (Institute of Physics, Bhubaneswar); DAS, Sudipta (Institute of Physics, Bhubaneswar); Mr SWAIN, Pragyanprasu (Institute of physics, Bhubaneswar)

Presenter: DAS, Sudipta (Institute of Physics, Bhubaneswar) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 180 NuFact 2021: The … / Report of Contributions Muon Precision Measurements wi …

Contribution ID: 222 Type: Poster

Muon Precision Measurements with a Penning Trap

Muon, which has a mass of about 200 times greater than that of an electron, is expected to be a good probe to search for new physics beyond the Standard Model. There is a 4.2σ discrepancy between the theoretical value of the Standard Model and the experimental value observed from muon g−2 experiments [1, 2, 3]. At J-PARC, precision measurements of muon g−2 and muonium hyperfine structure are planned [4, 5]. In addition, by combining the ultra-slow muon technology at J-PARC with the Penning trap technology, we plan to measure the mass, lifetime, and magnetic moment of a rest muon with the precision of 1 ppb, 1 ppm, and 1 ppb, respectively. In this talk, we will present the conceptual design and progress of the muon Penning trap project.

1 B. Abi et al., (Muon g−2 Collaboration), Phys. Rev. Lett. 126, 141801 [2] T. Albahri et al., (Muon g−2 Collaboration), Phys. Rev. D 103, 072002 [3] T. Albahri et al., (The Muon g−2 Collaboration) Phys. Rev. A 103, 042208 [4] M. Abe et al., Prog. Theor. Exp. Phys. 2019, 053C02. [5] S. Kanda et al., Phys. Lett. B 815 136154.

Working group WG4

Primary author: NISHIMURA, Shoichiro (KEK) Co-authors: SHIMOMURA, koichiro (KEK IMSS); ADACHI, Taihei (KEK IMSS); NIO, Makiko (RIKEN); HIGUCHI, Takashi (RCNP, Osaka University); NAGATANI, Yukinori (KEK IMSS); PANT, Amba (KEK IMSS); IINUMA, Hiromi (Japan/Ibaraki-University) Presenter: NISHIMURA, Shoichiro (KEK) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 181 NuFact 2021: The … / Report of Contributions Probing Lorentz Invariance Violati …

Contribution ID: 223 Type: Poster

Probing Lorentz Invariance Violation with Atmospheric Neutrinos at INO-ICAL

Unified theories such as string theory suggests spontaneous Lorentz Invariance Violation(LIV) by 19 introducing a new spacetime structure at the Planck Scale (mp ∼ 10 GeV). This effect can be observed at low energies with strength of ∼ 1/mp using perturbative approach. In the Minimal Standard Model Extension (SME) framework, the neutrino mass-induced flavor oscillation gets modified in the presences of LIV. The Iron Calorimeter (ICAL) detector at the proposed India- based Neutrino Observatory (INO) offers an unique window to probe these LIV parameters by observing atmospheric neutrinos and anti neutrinos separately over a wide range of baselines in the multi-GeV energy range. In this paper, for the first time, we study in detail how the CPT- − violating LIV parameters (aeµ, aeτ , aµτ ) can alter muon survival probabilities and expected µ and µ+ event rates at ICAL. Using 500 kt·yr exposure of ICAL, we place stringent bounds on these CPT-violating LIV parameters at 95% C.L which are slightly better than the present Super- Kamiokande limits. We discuss the effect of the marginalization over the oscillation parameters and the advantage of having the hadron energy information and charge identification capability at ICAL in constraining these LIV parameters. We also study the impact of these LIV parameters on mass ordering determination and precision measurement of atmospheric oscillation parameters.

Working group WG5

Primary author: Mr SAHOO, SADASHIV (Institute of Physics Bhubaneswar, Homi Bhabha National Institute Mumbai, INDIA)

Co-authors: Mr KUMAR, Anil (Institute of Physics, Bhubaneswar, India); Dr AGARWALLA, Sanjib Kumar (Institute of Physics, Bhubaneswar)

Presenter: Mr SAHOO, SADASHIV (Institute of Physics Bhubaneswar, Homi Bhabha National Insti- tute Mumbai, INDIA) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 182 NuFact 2021: The … / Report of Contributions Status of the NEXT experiment for …

Contribution ID: 224 Type: not specified

Status of the NEXT experiment for neutrinoless double beta decay searches Wednesday, 8 September 2021 16:00 (18 minutes)

NEXT (Neutrino Experiment with a Xenon TPC) is a neutrinoless double beta decay experiment located at the Laboratorio Subterráneo de Canfranc (LSC, Spain). Its aim is to demonstrate that the neutrino is a Majorana particle by detecting the neutrinoless double beta decay process in xenon gas enriched in the 136Xe isotope. The detector technology used in NEXT is that of radiopure high pressure time projection chambers with electroluminescence amplification, which provide excellent energy resolution better than 1% FWHM in the energy region of interest, topological reconstruction that allows rejecting single-electron background events and a strong potential for “in situ” tagging of the barium daughter ion. The experiment has been developing in phases. The NEXT-White detector is currently running at the LSC and contains approximately anactive Xe mass of 5 kg. Its purpose is to demonstrate the excellent energy resolution, to validate the reconstruction algorithms and the background model, and to make a measurement of the two- neutrino double beta decay of 136Xe. The 100 kg NEXT-100 detector is under construction and is scheduled to be installed and assembled by the end of 2021. The predicted 90% CL sensitivity to the neutrinoless double beta decay half-life will reach 1026 years for an exposure of about 400 kg·year. A vigorous program towards the development of ton-scale detectors is also under way, including extensive R&D towards the realization of in-situ Ba2+ tagging as means to achieve virtually zero- background detection. A first module with a mass of at least 500 kg may be operating as earlyas 2026 at the Canfranc Underground Laboratory.

In this talk, I will report on recent results obtained with the NEXT-White detector, on the NEXT- 100 construction status and on the prospects of future NEXT detectors.

Working group WG6

Primary author: Mrs ROMO-LUQUE, Carmen (IFIC) Presenter: Mrs ROMO-LUQUE, Carmen (IFIC) Session Classification: WG6

September 30, 2021 Page 183 NuFact 2021: The … / Report of Contributions Validating the Earth’s Core using …

Contribution ID: 226 Type: Poster

Validating the Earth’s Core using Atmospheric Neutrinos with ICAL at INO

The Iron Calorimeter (ICAL) detector at the proposed India-based Neutrino Observatory (INO) aims to detect atmospheric neutrinos and antineutrinos separately in the multi-GeV range of energies and over a wide range of baselines. By utilizing its charge identification capability, ICAL can efficiently distinguish µ− and µ+ events. Atmospheric neutrinos passing long distances through Earth can be detected at ICAL with good resolution in energy and direction, which enables ICAL to see the density-dependent matter oscillations experienced by upward-going neutrinos in the multi- GeV range of energies. In this work, we explore the possibility of utilizing neutrino oscillations in the presence of matter to extract information about the internal structure of Earth complementary to seismic studies. Using good directional resolution, ICAL would be able to observe 331 µ− and 146 µ+ core-passing events with 500 kt·yr exposure. With this exposure, we show for the first time that the presence of Earth’s core can be independently confirmed at ICAL with a median ∆χ2 of 7.45 (4.83) assuming normal (inverted) mass ordering by ruling out the simple two-layered mantle-crust profile in theory while generating the prospective data with the PREM profile. We observe that in the absence of charge identification capability of ICAL, this sensitivity deteriorates significantly to 3.76 (1.59) for normal (inverted) mass ordering.

Working group WG1

Primary authors: Mr KUMAR, Anil (Institute of Physics, Bhubaneswar, SINP, Kolkata, HBNI, Mum- bai, India); Prof. AGARWALLA,Sanjib Kumar (Institute of Physics, Bhubaneswar, HBNI, Mumbai, ICTP, Trieste)

Presenter: Mr KUMAR, Anil (Institute of Physics, Bhubaneswar, SINP, Kolkata, HBNI, Mumbai, India) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 184 NuFact 2021: The … / Report of Contributions A New Approach to Probe Non- …

Contribution ID: 227 Type: Oral

A New Approach to Probe Non-Standard Interactions in Atmospheric Neutrino Experiments Wednesday, 8 September 2021 14:20 (20 minutes)

We propose a new approach to explore the neutral-current non-standard neutrino interactions (NSI) in atmospheric neutrino experiments using oscillation dips and valleys in reconstructed muon observables, at a detector like ICAL that can identify the muon charge. We focus on the flavor-changing NSI parameter εµτ , which has the maximum impact on the muon survival probability in these experiments. We show that non-zero εµτ shifts the oscillation dip locations in L/E distributions of the up/down event ratios of reconstructed µ− and µ+ in opposite directions. We introduce a new variable ∆d representing the difference of dip locations in µ− and µ+, which is 2 sensitive to the magnitude as well as the sign of εµτ , and is independent of the value of ∆m32. We further note that the oscillation valley in the (E, cos θ) plane of the reconstructed muon observables bends in the presence of NSI, its curvature having opposite signs for µ− and µ+. We demonstrate the identification of NSI with this curvature, which is feasible for detectors likeICAL having excellent muon energy and direction resolutions. We illustrate how the measurement of − + contrast in the curvatures of valleys in µ and µ can be used to estimate εµτ . Using these proposed oscillation dip and valley measurements, the achievable precision on |εµτ | at 90% C.L. is about 2% with 500 kt·yr exposure. The effects of statistical fluctuations, systematic errors, and uncertainties in oscillation parameters have been incorporated using multiple sets of simulated data. Our method would provide a direct and robust measurement of εµτ in the multi-GeV energy range.

Working group WG5

Primary authors: Mr KUMAR, Anil (Institute of Physics, Bhubaneswar, SINP, Kolkata, HBNI, Mum- bai, India); Dr KHATUN, Amina (Comenius University, Bratislava, Slovakia); Prof. DIGHE, Amol (TIFR, Mumbai); Prof. AGARWALLA, Sanjib Kumar (Institute of Physics, Bhubaneswar, HBNI, Mumbai, ICTP, Trieste)

Presenter: Mr KUMAR, Anil (Institute of Physics, Bhubaneswar, SINP, Kolkata, HBNI, Mumbai, India) Session Classification: WG 5

September 30, 2021 Page 185 NuFact 2021: The … / Report of Contributions Neutrino oscillations in presence o …

Contribution ID: 228 Type: Oral

Neutrino oscillations in presence of large extra dimensions at JUNO and TAO Wednesday, 8 September 2021 13:02 (22 minutes)

I discuss the sensitivity to parameters describing large extra dimensions (LED) at the next generation reactor experiment JUNO, in combination with its near detector TAO. After an introduction to neutrino oscillations with LED parameters, I discuss the effect of systematic uncertainties on the sensitivity. I show how well JUNO+TAO could measure LED parameters if large extra dimensions were present in nature. I also show that the light sterile neutrino scenario produces a nearly identical signal at JUNO+TAO as the LED scenario.

Working group WG5

Primary author: TERNES, Christoph Andreas (INFN, Sezione di Torino) Co-authors: GIUNTI, Carlo (INFN); VANEGASFORERO, David (Universidad de Medellín); QUIROGA, Alexander (Pontificia Universidade Catolica do Rio de Janeiro); BASTO, Victor Presenter: TERNES, Christoph Andreas (INFN, Sezione di Torino) Session Classification: WG 5

September 30, 2021 Page 186 NuFact 2021: The … / Report of Contributions Toward high-precision measurem …

Contribution ID: 230 Type: Poster

Toward high-precision measurement of muon lifetime with an intense pulsed muon beam at J-PARC

Precise measurements of the muon lifetime can determine the Fermi constant, which is the coupling constant for the weak interaction. The Fermi constant is an essential parameter of theStan- dard Model that should be determined experimentally, as well as the fine structure constant and the mass of the weak boson. In the 2000s, the FAST 1 and MuLan [2] experiments were performed using continuous muon beams at PSI. The former obtained the muon lifetime with a precision of16 ppm and the latter with a precision of 1 ppm. An experiment using a pulsed muon beam wasalso conducted at RIKEN-RAL [3]. We have studied the feasibility of further high-prevision measurement using an intense pulsed muon beam at J-PARC MLF MUSE to revisit this topic. A segmented scintillation counter with SiPM readout will be employed in a proposed experiment to obtain a muon lifetime spectrum with pileup correction. We will report on an overview of the experiment, detector prototype development, and pileup correction modeling in this contribution.

1 A. Barczyk et al. (FAST Collaboration), Phys. Lett. B 663, 172 (2008). [2] V. Tishchenko et al. (MuLan Collaboration), Phys. Rev. D 87, 052003 (2013). [3] D. Tomono et al, Nucl. Phys. B, Proc. Suppl. 149, 341 (2005).

Working group WG4

Primary author: Prof. KANDA, Sohtaro (KEK) Presenter: Prof. KANDA, Sohtaro (KEK) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 187 NuFact 2021: The … / Report of Contributions Status of the HOLMES experiment: …

Contribution ID: 231 Type: Oral

Status of the HOLMES experiment: commissioning of the ion implanter Thursday, 9 September 2021 16:20 (20 minutes)

The neutrino mass determination is an open issue in particle physics. The study of theendpoint of beta decay is the best experimental way to provide a model-independent measurement. The HOLMES experiment aims to measure directly the neutrino mass with a calorimetric approach studying the 163Ho electron-capture decay. The very low Q-value (2.8 keV), the half-life (4570 y) and the proximity of the endpoint to M1 resonance make the 163Ho decay a very good choice. However, there are two critical steps to be considered for the realization of the experiment. The first step is embedding of the source isotope inside the cryogenic microcalorimeters so that the energy released in the decay process is entirely contained within the detectors, except for the fraction taken away by the neutrino. The second one is the rejection of 166Ho radioactive isotope that could produce false signal in the region of interest. Taking into account these two requirements, a dedicated implanter with a sputter ion source, an acceleration section (up to 50 keV) and amagnetic dipole (for ion selection and beam focusing) has been designed and developed. The implanter calibration and performance have been evaluated using 63Cu/65Cu and 197Au beams. Currently, different holmium compounds are being tested to find the candidate with the best efficiency inthe sputter process. This work will show the status of the machine development and commissioning.

Working group WG5

Primary author: Dr GALLUCCI, Giovanni (INFN and University of Genova (IT)) Presenter: Dr GALLUCCI, Giovanni (INFN and University of Genova (IT)) Session Classification: WG 5

September 30, 2021 Page 188 NuFact 2021: The … / Report of Contributions Beam dynamics corrections to the …

Contribution ID: 232 Type: not specified

Beam dynamics corrections to the Run-1 measurement of the muon anomalous magnetic moment at Fermilab Wednesday, 8 September 2021 16:00 (30 minutes)

ABSTRACT The Fermi National Accelerator Laboratory (FNAL) Muon g − 2 Experiment has measured the positive muon magnetic anomaly aµ ≡ (gµ − 2)/2 with a precision of 0.46 parts per million, with data collected during its first physics run in 2018. The FNAL experimental result, combined with the measurement from the former experiment at Brookhaven National Laboratory, increases the tension with the Standard Model expectation to 4.2σ, thus strengthening possible hints for new physics. The magnetic anomaly is determined from the precision measurement of themuon spin precession frequency relative to the momentum vector (ωa), and the average magnetic field experienced by the beam. The in situ straw-tracking detectors are crucial to the evaluation of the beam dynamics properties, by providing detailed time-dependent stored-muon spatial profiles in two areas of the storage ring.

This talk presents the beam dynamics systematic corrections that are required to adjust themea- m sured muon precession frequency ωa to its true physical value ωa.

Working group WG3

Primary author: LUCA, Alessandra (Fermi National Accelerator Laboratory) Presenter: LUCA, Alessandra (Fermi National Accelerator Laboratory) Session Classification: WG 3

September 30, 2021 Page 189 NuFact 2021: The … / Report of Contributions Searches for New Physics with a …

Contribution ID: 233 Type: Oral

Searches for New Physics with a Stopped-pion Source at the Fermilab Accelerator Complex Wednesday, 8 September 2021 16:00 (20 minutes)

The PIP-II complex at Fermilab is slated for operation later this decade and can supportaMW- class O(1 GeV) proton fixed-target program in addition to the beam required for DUNE. Proton collisions with a fixed target could produce a bright stopped-pion neutrino source. The addition of an accumulator ring allows for a pulsed neutrino source with a high duty factor to suppress backgrounds. The neutrino source supports a program of using coherent elastic neutrino-nucleus scattering (CEvNS)to search for new physics, such as sensitive searches for active-to-sterile neutrino oscillations and accelerator-produced light dark matter. A key feature of a program at the Fermilab complex is the ability to design the detector hall specifically for HEP physics searches. In this talk I will present the PIP-II project and upgrades towards a stopped-pion neutrino source at Fermilab and studies showing the sensitivities of a O(100 ton) liquid argon scintillation detector to the physics accessible with this source.

Working group WG5

Primary authors: ZETTLEMOYER, Jacob (Fermilab); TOUPS, Matthew (Fermi National Accelerator Laboratory)

Presenters: ZETTLEMOYER, Jacob (Fermilab); TOUPS, Matthew (Fermi National Accelerator Lab- oratory) Session Classification: WG 5

September 30, 2021 Page 190 NuFact 2021: The … / Report of Contributions Detector Systems Development for …

Contribution ID: 234 Type: Poster

Detector Systems Development for Inter-Bunch Extinction Measurements at the 8 GeV Slow-Extracted Pulsed Proton Beam for the COMET Experiment at J-PARC

The COMET experiment will search for the muon-to-electron conversion process in aluminium with a high single event sensitivity of 10−17. We use the high-intensity proton beam at 8 GeV slowly extracted from the main synchrotron accelerator of Japan Proton Accelerator Research Complex (J-PARC). The beam must form in a pulsed structure with a distance of1.2 µsec, and the extinction value, the proton-number ratio outside and inside of the bunch, should be less than 10−10. We measured the extinction by counting proton-induced pions at the K1.8BR secondary beamline at the Hadron Experimental Facility in J-PARC, and the analysis is ongoing. For the measurement, we developed a hodoscope to measure the pion-hitting timings with 132- channel segmented plastic scintillators, read out by silicon photomultipliers and photomultiplier tubes, and its surrounding system, including an amplifier and digitiser electronics and data acquisition (DAQ) software. We prepared three different FPGA-based TDC modules with time resolutions of 1, 5, and 7.5 nsec and optimised their firmware to have distinct advantages for redundancy. The amplifier boards also discriminate signals and distribute them to all three TDC modules. TheDAQ software was designed not to limit the data transfer speed and not be suppressed by diskaccess. The system worked as expected at a hit rate of12Mπ/beam spill, the maximally allowed beam intensity. The detail and performance of the developed detector system will be presented.

Working group WG6

Primary author: OISHI, Kou (Imperial College London) Co-authors: IKEDA, Fumihito (University of Tokyo); NISHIGUCHI, Hajime (KEK IPNS); YOSHIDA, Hisataka (Osaka University RCNP); UENO, Kazuki (KEK IPNS); NOGUCHI, Kyohei (Kyushu Uni- versity); SHOJI, Masayoshi (KEK IPNS); HONDA, Ryotaro (KEK IPNS); FUKAO, Yoshinori (KEK IPNS); IGARASHI, Youichi (KEK IPNS); NAKAZAWA, Yu (KEK IPNS); FUJII, Yuki (Monash Univer- sity); HIGUCHI, Yuya (Osaka University) Presenter: OISHI, Kou (Imperial College London) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 191 NuFact 2021: The … / Report of Contributions Microwave spectroscopy of the hy …

Contribution ID: 235 Type: Oral

Microwave spectroscopy of the hyperfine structure in muonium: zero-field results and high-field preparation Thursday, 9 September 2021 17:00 (30 minutes)

A hydrogen-like atom consisting of a positive muon and an electron is known as muonium. It is an ideal two-body system to test bound-state theory and fundamental symmetries. The MuSEUM collaboration aims to obtain the hyperfine structure (HFS) in muonium and the muon-to-electron mass ratio, which is necessary to determine the muon’s anomalous magnetic moment. Our goal is to exceed the precision of the previous experiment at Los Alamos National Laboratory 1 by a factor of ten. Since most of the uncertainty was a statistical error, we expect a significant improvement in the precision by using the high-intensity pulsed muon beam at J-PARC MLF MUSE. The project is divided into two phases: proof of principle at zero field and measurements at high-field forthe highest precision. We have reported the first physics results for the former [2], showing that our new method is working properly. For the latter, construction of a new beamline and R&D of high- precision magnetic field probes are in progress. In this contribution, we will present an overview of the project, the analysis results of the zero-field measurement, and the preparations for the high-field experiment.

1 : W. Liu et al., Phys. Rev. Lett. 82 (1999) 711-714. [2] : S. Kanda et al., Phys. Lett. B 815 (2021) 136154.

Working group WG4

Primary author: Prof. KANDA, Sohtaro (KEK) Presenter: Prof. KANDA, Sohtaro (KEK) Session Classification: WG 4

September 30, 2021 Page 192 NuFact 2021: The … / Report of Contributions Status on the construction of the s …

Contribution ID: 236 Type: Poster

Status on the construction of the straw tube tracker for the COMET experiment Phase-I

The COMET experiment at J-PARC aims to search for the charged lepton flavor violating process of neutrinoless muon to electron conversion with an improvement of a sensitivity by a factor of 10000 to the current limit. 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 detecting such electron with an excellent momentum resolution, better than 200 keV/c, to achieve the goal sensitivity. Thus, the very light material detector which is operational in vacuum is indispensable. Based on 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 straw-tube tracker consists of 9.8 mm diameter tube, longer than 1 m length, with 20 μm thickness Mylar foil and 70 nm aluminum deposition. Recently, we started the assembly of the final straw tube tracker for COMET phase-I. In this presentation, we report the status on the construction of the straw tube tracker. The prospect of the development of the straw tracker towards the COMET phase-II is also described.

Working group WG6

Primary author: UENO, Kazuki (KEK) Co-authors: SAMARTSEV, Alexandre (Joint Inst. for Nuclear Research (RU)); MOISEENKO, Ana- toly (JINR); IKEDA, Fumihito (University of Tokyo); NISHIGUCHI, Hajime (KEK); SUZUKI, Junichi (KEK); OISHI, Kou (Imperial College London); KAMEI, Naoya (KEK); TSVERAVA, Nikolozi (Georgian Technical University (GE)); EVTOUKHOVITCH, Peter (Joint Institute for Nuclear Research (RU)); MI- HARA, Satoshi (KEK); TSAMALAIDZE, Zviadi (Georgian Technical University (GE)) Presenter: UENO, Kazuki (KEK) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 193 NuFact 2021: The … / Report of Contributions Extinction Measurement at J- …

Contribution ID: 237 Type: not specified

Extinction Measurement at J-PARC MR with Slow-Extracted Pulsed Proton Beam for COMET Experiment Wednesday, 8 September 2021 13:40 (30 minutes)

The COMET experiment aims to search for the neutrinoless conversion of a muon to anelectron in muonic atoms. This experiment utilizes a slow-extracted pulsed proton beam at 8 GeV fromthe J-PARC main ring synchrotron (MR). To achieve a sensitivity of 10−17, an extremely clean pulsed beam is required. In particular, an intensity ratio of leakage protons to the main pulsed beam, called EXTINCTION, must be less than 10−10. This beam is critical in the pursuit of the highest level of sensitivity. The MR nominally accelerates the protons up to 30 GeV with 600 ns bunch intervals andextracts them slowly after forming the continuous beam. Instead, the COMET requires the acceleration of protons up to 8 GeV with 1.2 µs bunch intervals and slow-extraction with keeping the bunch separations, called bunched slow-extraction (bunched-SX). A 1.2 µs bunch separation is realized by arranging the proton-filled bucket and the empty bucket alternately. Although both buckets are injected into the MR by once excitation of the injection kicker, there are some protons with the extinction of 10−6 in the empty bucket at the rapid cycling synchrotron for the MR. To achieve excellent extinction, the injection kicker excitation timing is shifted such that particles remaining in the empty bucket are not injected into the MR. It is essential to measure the extinction with such customized MR operations. An extinction measurement with a bunched-SX beam was performed with O(1010) statistics in May 2021. The extinction was measured by counting all secondary pions of a bunched-SX beam in the K1.8BR secondary beamline in the hadron experimental facility of J-PARC. The result of extinction measurement will be presented.

Working group WG3

Primary author: NOGUCHI, Kyohei (Kyushu University) Co-authors: TAMURA, Fumihiko (Japan Atomic Energy Agency); IKEDA, Fumihito (The University of Tokyo); NISHIGUCHI, Hajime (KEK IPNS); YOSHIDA, Hisataka (Osaka University, RCNP); TOJO, Junji (Kyushu University); UENO, Kazuki (KEK IPNS); OISHI, Kou (Imperial College London); TOMIZAWA, Masahito (KEK ACC); SHOJI, Masayoshi (KEK IPNS); HONDA, Ryotaro (Tohoku University, KEK IPNS); MUTO, Ryotaro (KEK ACC); MIHARA, Satoshi (KEK IPNS); IGARASHI, Yoichi (KEK IPNS); FUKAO, Yoshinori (KEK IPNS); HASHIMOTO, Yoshinori (KEK ACC); NAKAZAWA, Yu (KEK IPNS); FUJII, Yuki (Monash University); HIGUCHI, Yuya (Osaka University) Presenter: NOGUCHI, Kyohei (Kyushu University) Session Classification: WG 3

September 30, 2021 Page 194 NuFact 2021: The … / Report of Contributions Muon and electron g-2, proton and …

Contribution ID: 238 Type: Poster

Muon and electron g-2, proton and cesium weak charges implications on dark models

The 4.2 deviation of the anomalous muon magnetic moment measurements recently performed at Fermilab with respect to the state of the art theory prediction has strengthened the motivation for standard model extensions. In this talk, we analyse a model involving an additional mediator and we show the constraints obtained considering the muon and electron magnetic moment determinations and the proton and cesium weak charge measurements. We will also explain the procedure used to revise the cesium weak charge determination from atomic parity violation, exploiting a practically model-independent extrapolation from the recent neutron radius of lead nuclei performed by PREX. A combined fit suggests an appealing evidence of the existence of a boson, particularly intriguing in light of other increasing evidences for the incompleteness of the standard model.

Working group WG4

Primary author: CARGIOLI, Nicola (INFN - National Institute for Nuclear Physics) Co-authors: GIUNTI, Carlo (INFN); CADEDDU, Matteo (Cagliari University and INFN); DORDEI, Francesca (INFN, Cagliari (IT)); PICCIAU, Emmanuele (INFN - National Institute for Nuclear Physics)

Presenter: CARGIOLI, Nicola (INFN - National Institute for Nuclear Physics) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 195 NuFact 2021: The … / Report of Contributions QED radiative corrections to …

Contribution ID: 240 Type: Oral

QED radiative corrections to charged-current neutrino-nucleon elastic scattering for accelerator neutrino experiments Wednesday, 8 September 2021 15:00 (20 minutes)

Charged-current quasielastic scattering is the signal process in modern neutrino oscillation experiments. It also serves as the main tool for the reconstruction of the incoming neutrino energy. Ex- ploiting effective field theory, we factorize neutrino-nucleon quasielastic cross sections intosoft, collinear, and hard contributions. We evaluate soft and collinear functions from QED and provide a model for the hard contribution. Performing resummation, we account for logarithmically- enhanced higher-order corrections and evaluate cross sections and cross-section ratios quantifying the resulting error. We discuss the relevance of radiative corrections depending on conditions of modern and future accelerator-based neutrino experiments.

Working group WG2

Primary authors: QING, Chen (University of Kentucky); TOMALAK, Oleksandr (University of Kentucky); MCFARLAND, Kevin (University of Rochester); Prof. HILL, Richard J (University of Ken- tucky and Fermilab)

Presenter: TOMALAK, Oleksandr (University of Kentucky) Session Classification: WG 2

September 30, 2021 Page 196 NuFact 2021: The … / Report of Contributions “Warning!”: an interdisciplinary p …

Contribution ID: 241 Type: Oral

“Warning!”: an interdisciplinary project to discuss about the big planetary threats

The project “Warning! The big planetary threats: knowing them to defend ourselves “aimedto develop interdisciplinary educational paths on the themes of environmental fragility and danger, addressing a wide audience but with a specific focus on young people. The initiative consisted of 5 debates were scientists presented an in-depth scientific analysisof so-called natural disasters, i.e. phenomena related to climate change, major pandemics, endoge- nous events (i.e. volcanoes and earthquakes), the fall on the earth’s surface of asteroids and space debris and finally to the pollution of the seas, and their consequences. The aim wastofoster a “culture of being ready” consisting in the adoption of responsible and scientifically sound be- haviors, overcoming a culture dominated by the ‘here and now’ and therefore little motivated to tackle long-term problems. All the considered phenomena have decidedly complex characteristics: the unpredictability or difficult predictability of their development, the quantification of the risks, the dangerous interconnections among them, the increasingly global nature of their effects and the diversity of their impact according to the social, economic and even cultural situations in the various geographical areas. The debates underlined the importance of internationally supportive initiatives to address these dangers. An interdisciplinary approach was used stressing the importance of the scientific method to face complex problems. Physics was the “fil rouge” accompanying the participants in this journey across many fields of science. The various events took place virtually, allowing the participation of more than 3000 high school students from about 20 schools. To encourage the conscious and direct participation of students in the debate, explanatory material provided in digital form was made available to interested teachers. Students were asked to present their questions to the speakers in advance, therefore a significant part of the seminars was devoted to answering student questions. “Warning” represented a useful educational support for students and teachers, who were able to attend the events in a ‘virtual classroom’, and integrate topics covered in school programs.

Working group Diversity, Education and Outreach

Primary authors: MAZZONI, Enrico; CERVELLI, Franco; LEONE, Sandra (Universita & INFN Pisa (IT))

Presenter: MAZZONI, Enrico Session Classification: Special session

September 30, 2021 Page 197 NuFact 2021: The … / Report of Contributions Neutrino beam: from Gamma Fact …

Contribution ID: 242 Type: Poster

Neutrino beam: from Gamma Factory to Neutrino Factory

We propose a neutrino beam source based on the Gamma Factory Initiative to develop a source of high-intensity gamma rays using the existing accelerator facilities at CERN. The Partially Stripped Ion beam collides head-on with a laser and emits photons. It could increase the intensity of produced photon beam reaching a flux of the order of 1017 photons per second, in the γ energy domain of 1 ≤ Eγ ≤ 400 MeV. The high intensity gamma beam will be directed to the graphite targetto produce pions. The pions can be focused by a collection device, either with a horn (CERN reference scenario) or a solenoid (US machine design). Further decay of charged pions produces muons and neutrinos.

Working group WG3

Primary author: APYAN, Armen (A.I. Alikhanyan National Science Laboratory (ANSL)) Co-authors: KRASNY, Mieczyslaw (LPNHE, Sorbonne University, Paris, Centre National de la Recherche Scientifique (FR) and CERN); PLACHEK, Wieslaw (Jagiellonian University); ZIMMERMANN, Frank (CERN)

Presenter: APYAN, Armen (A.I. Alikhanyan National Science Laboratory (ANSL)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 198 NuFact 2021: The … / Report of Contributions Recent searches for sterile neutrin …

Contribution ID: 243 Type: Oral

Recent searches for sterile neutrinos at NOvA Wednesday, 8 September 2021 17:00 (20 minutes)

Although the majority of neutrino oscillation data can be successfully explained by three-flavour neutrino oscillations, some data can be interpreted using short-baseline neutrino oscillations with a fourth sterile neutrino mass state with ∼ 1 eV2 mass. This data comprises the event excesses seen by the LSND and MiniBooNE experiments, and the event deficits seen by the GALLEX and SAGE experiments. However, this interpretation is complicated by null results from other short-baseline searches, and disappearance searches in long-baseline and atmospheric searches.

The NOvA (NuMI Off-axis νe Appearance) experiment can probe this tension by searching for the disappearance of active neutrinos from the NuMI (Neutrinos from the Main Injector) beam, with a near detector at a baseline of 1 km and a far detector at a baseline of 810 km. This talk will present recent results from NOvA on searches for active to sterile oscillations in neutral current and charged current νµ events using neutrino and antineutrino beam.

Working group WG5

Primary author: HEWES, Jeremy Edmund (University of Cincinnati (US)) Presenter: HEWES, Jeremy Edmund (University of Cincinnati (US)) Session Classification: WG 5

September 30, 2021 Page 199 NuFact 2021: The … / Report of Contributions Measurement of neutrino oscillati …

Contribution ID: 244 Type: Poster

Measurement of neutrino oscillation parameters 2 2 sin 2θ13 and ∆mee at Daya Bay, and joint sterile neutrino limits with MINOS/MINOS+ and Bugey-3

The Daya Bay reactor neutrino experiment continues to refine its world-leading measurements 2 of the mixing angle θ13 and the effective mass splitting ∆mee, while also shedding light on various other topics in neutrino physics. At Daya Bay, electron antineutrinos are provided by six nuclear reactors in southern China, totaling 17.4 GWth, and they are observed by eight identically designed liquid scintillator detectors divided among two near sites and one far site. By measuring the relative antineutrino rates and spectral shapes at the near and far sites, Daya Bay benefits from a virtually complete cancellation of all systematic uncertainties related to the reactor flux and absolute detection efficiency.

In addition to the measurement of θ13-driven oscillation, Daya Bay is also well-positioned to 2 search for hypothetical “θ14-driven” oscillation caused by a light sterile neutrino with a sub-eV mass-squared splitting. Such a particle could potentially explain, first, the anomalous electron (anti)neutrino excess in muon (anti)neutrino beams observed by the LSND and MiniBooNE collaborations, and second, the global deficit observed in the reactor neutrino flux compared tomodel predictions. With the addition of data from the shorter-baseline Bugey-3 experiment, sensitivity 2 can be extended to higher values of ∆m41. Going further, the data from the two reactor experiments can be combined with that from the MINOS/MINOS+ accelerator experiments, allowing 2 2 2 limits to be set on the νµ-to-νe effective mixing angle sin 2θµe ≡ 4|Ue4| |Uµ4| .

In this talk, we describe Daya Bay’s measurements using our primary data sample, in which electron antineutrinos are identified via the inverse beta decay interaction, with subsequent neutron 2 capture on gadolinium. From a 1958-day data sample, we obtain sin 2θ13 = 0.0856 ± 0.0029 and 2 +0.068 × −3 2 ∆mee = (2.522−0.070) 10 eV . In addition, from a 1230-day sample, we set 90% CL limits of 2 × −3 2 2 sin 2θ14 < 0.01 for approximately 4 10 < ∆m41 < 0.1 eV , strongly disfavoring a sterile 2 neutrino in this mass range as the explanation of the flux discrepancy. For sin 2θ14 > 0.1, the 90% × −4 2 2 CL excluded mass splittings span a wide range of approximately 4 10 < ∆m41 < 0.3 eV , which we extend up to 3 eV2 via the addition of Bugey-3 data. Finally, the two reactor datasets, when combined with MINOS/MINOS+ data, exclude the LSND/MiniBooNE allowed regions for 2 2 ∆m41 < 5 (1.2) eV at 90% (99%) CL, increasing the tension (within the four-flavor framework) between LSND/MiniBooNE and other experiments.

Working group WG1

Primary author: KRAMER, Matt (UC Berkeley) Presenter: KRAMER, Matt (UC Berkeley) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 200 NuFact 2021: The … / Report of Contributions Neutrino-induced proton knockou …

Contribution ID: 245 Type: Oral

Neutrino-induced proton knockout in MicroBooNE Wednesday, 8 September 2021 14:40 (20 minutes)

The MicroBooNE detector is the world’s longest-running liquid argon time projection chamber (LArTPC), currently installed in the Booster Neutrino Beam at Fermilab. One of the primary physics goals of MicroBooNE is to perform detailed studies of neutrino-argon scattering cross sections, which are critical for the success of future neutrino oscillation experiments. At neutrino energies relevant for the Short-Baseline Neutrino Program, the most plentiful event topology involves mesonless final states containing one or more protons. A low reconstruction threshold enabled by LArTPC technology has allowed MicroBooNE to pursue various analyses studying neutrino-induced proton production at accelerator energies. This talk presents several recent results from that effort, including a neutral-current elastic differential cross section as a function of Q^2, as well as charged-current measurements examining exclusive final states containing protons.

Working group WG2

Primary author: SWORD-FEHLBERG, Samantha (NMSU) Presenter: SWORD-FEHLBERG, Samantha (NMSU) Session Classification: WG 2

September 30, 2021 Page 201 NuFact 2021: The … / Report of Contributions CONNIE: A low-energy experime …

Contribution ID: 246 Type: Poster

CONNIE: A low-energy experiment with reactor neutrinos

The Coherent Neutrino-Nucleus Interaction Experiment (CONNIE) uses fully depleted high-resistivity CCDs (Charge Coupled Devices) to detect the coherent elastic neutrino-nucleus scattering (CEνNS) of reactor antineutrinos with Silicon nuclei and probe physics beyond the Standard Model. CON- NIE is located at a distance of 30 m from the core of the 3.8 GW Angra-2 nuclear reactor, in Brazil. Since its 2016 upgrade, the experiment has operated with a noise level of less than 2 e RMS and an active mass of 50 g. The analysis of the 2016-2018 data allowed to set a 95% C.L. upper limit on the CEνNS rate. This result was used to restrict simplified extensions of the SM involving light mediators imposing the best limits between experiments looking for CEνNS for low-mass mediators. Here, we report on CONNIE’s performance over the past 4 years, the finalized blind analysis of the 2019 data featuring a lower energy threshold (50 eV), and prospects for using Skipper-CCDs to observe CEνNS in nuclear reactors.

Working group WG6

Primary author: CERVANTES VERGARA, Brenda Aurea (UNAM) Presenter: CERVANTES VERGARA, Brenda Aurea (UNAM) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 202 NuFact 2021: The … / Report of Contributions An accumulator ring for the 5 MW …

Contribution ID: 247 Type: not specified

An accumulator ring for the 5 MW beam for the ESSnuSB Tuesday, 7 September 2021 16:20 (20 minutes)

The commissioning of the European Spallation Source (ESS) linac has started and that marksan- other important step towards the completion of the most powerful proton driver in the world with 5 MW of average beam power on target. Such impressive beam power could also be used for particle physics experiments at the intensity frontier. In particular, the ESS based super-beam project ESSnuSB plans to use the ESS linac as a driver for a long baseline neutrino oscillation experiment to measure, with precision, the charge-parity violation phase. In order not to interfere with the neutron production, the ESSnuSB will increase the beam duty cycle of the linac from 4% to 8% by accelerating pulses of H− ions interleaved with the proton pulses used for neutron production. Each H− pulse will be extracted at the end of the linac in four batches, transported to a 384 m circumference storage ring, where the batches will be accumulated over 600 turns and then extracted in a single turn. In this way, we form highly compressed 1.2 µs pulses carrying almost 90 kJ each. On average, another 5 MW of beam power will be used for producing the neutrino super beam. We present the design and expected performance of the accumulator ring with details on the charge-exchange injection, the fast extraction, the two-stage collimation and the RF systems.

Working group WG3

Primary authors: OLVEGAARD, Maja; ZOU, Ye (Uppsala University (SE)) Presenter: OLVEGAARD, Maja Session Classification: WG 3

September 30, 2021 Page 203 NuFact 2021: The … / Report of Contributions Neutrino Oscillation Physics in JU …

Contribution ID: 248 Type: Oral

Neutrino Oscillation Physics in JUNO Wednesday, 8 September 2021 14:38 (18 minutes)

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator detector that will study reactor antineutrinos emitted from two nuclear power plants in the south ofChina at a baseline of about 53 km. Thanks to its 2 photon detection systems (18000 20” PMTs and25600 3” PMTs), JUNO will achieve an unprecedented 3% energy resolution at 1 MeV with an energy scale calibration uncertainty of 1%. Such a powerful detector capability will resolve, for the first time, the interference pattern between the solar and atmospheric oscillation modes. Therefore, the primary physics goals of JUNO include the determination of the neutrino mass ordering at a 2 3-sigma confidence level and the measurement of three neutrino oscillation parameters, sin θ12, 2 2 ∆m21 and ∆m32, with sub-percent precision. This talk will cover the JUNO expected sensitivity in terms of neutrino oscillation physics, showing the impact of JUNO future results within the global neutrino framework.

Working group WG1

Primary author: Dr NAVAS NICOLAS, Diana (IJCLab) Presenter: Dr NAVAS NICOLAS, Diana (IJCLab) Session Classification: WG 1

September 30, 2021 Page 204 NuFact 2021: The … / Report of Contributions Calibration of the 3D projection sc …

Contribution ID: 249 Type: Poster

Calibration of the 3D projection scintillation tracker prototype for the neutron beam test

The focus of the long-baseline neutrino oscillation experiments that are currently being built is the precise measurement of the neutrino oscillation parameters which will require good control of the systematic uncertainties including those of the neutrino interaction models. A novel three-dimensional projection scintillation tracker will be the active target of the ND280 near detector upgrade for the T2K experiment and is being considered as one of the on-axis near detector modules for the DUNE experiment. This detector features fine granularity and good timing resolution allowing for better reconstruction of the final state products of neutrino interactions on event-by-event basis including the ability to reconstruct neutrons. Two prototypes took neutron beam data in 2019 and 2020 at the Los Alamos National Lab (LANL) to study the detector response to neutrons with energies from 0-800MeV. The response of the detector was calibrated with in-situ LED calibration system and cosmic ray muons.

The details of the detector response calibration are presented.

Working group WG6

Primary author: TZANOV, Martin Mihaylov (Louisiana State University (US)) Presenters: PAUL TORRES, Alexander (Louisiana State University); TZANOV, Martin Mihaylov (Louisiana State University (US)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 205 NuFact 2021: The … / Report of Contributions Interactions with an Electromagne …

Contribution ID: 250 Type: Oral

Interactions with an Electromagnetic Shower in the Final State at the NOvA Near Detector Thursday, 9 September 2021 16:40 (18 minutes)

The NOvA experiment is a long-baseline neutrino experiment aiming to constrain independent elements of the PMNS matrix. The NOvA Near Detector can also serve as a way to measuremany different types of neutrino-nucleus cross sections, significantly adding to the world neutrino data and helping to improve models of neutrino scattering that are critical to oscillation measurements. Electromagnetic showers can be produced in a variety of ways from neutrino scattering, sometimes in the final state lepton in charged current νe scattering, or through the decay of hadronsfrom charged- or neutral-current interactions, and also through coherent or incoherent scattering. Each of these final state configurations has different sensitivities to initial and final state nu- cleareffects as well as interaction processes with nuclear constituents. This talk will discuss the status of asuite of analyses of data from the NOvA Near Detector which all have electromagnetic showers in the final state using both neutrinos and antineutrinos as aprobe.

Working group WG2

Primary author: RAMSON, Bryan Joseph (Fermi National Accelerator Lab. (US)) Presenter: RAMSON, Bryan Joseph (Fermi National Accelerator Lab. (US)) Session Classification: WG 2

September 30, 2021 Page 206 NuFact 2021: The … / Report of Contributions The FCC project

Contribution ID: 251 Type: not specified

The FCC project Thursday, 9 September 2021 16:00 (30 minutes)

The Future Circular Collider is at the heart of the future vision of the European Strategy forParticle Physics, who placed, as the highest priority for Europe and its international partners, a technical and financial feasibility study of the 100km infrastructure and of the colliders that would bein- stalled in it. The physics programme is based on the sequence of a 90-400 GeV high luminosity and high precision e+e- collider, FCC-ee, followed by a 100 TeV hadron collider including also heavy ion and optionally e-p collisions. The physics opportunities of the two machines arere- markably complementary, both machines offering significant opportunities for discovery in their own right, with a strong neutrino program. The presentation will address the opportunities and challenges that the project presents, beginning with the implementation of a 100km infrastructure around Geneva for a > 70 years long exploitation, and possible synergies with high energy muon storage rings. The main challenges in accelerator technology are the design of a high efficiency RF system (for FCC-ee) and the design of affordable and high quality high field (16T) magnets for the FCC-hh. Some challenging aspects of the accelerator design for FCC-ee will also be discussed: crab-waist collisions and IR design, high precision centre-of-mass determination and the challenge of designing a monochromatiza- tion scheme for ee –> H s-channel production.

Working group WG3

Primary authors: BLONDEL, Alain (Universite de Geneve (CH)); ZIMMERMANN, Frank (CERN)

Presenter: ZIMMERMANN, Frank (CERN) Session Classification: WG 3

September 30, 2021 Page 207 NuFact 2021: The … / Report of Contributions FCC: a (heavy) neutrino factory

Contribution ID: 252 Type: Oral

FCC: a (heavy) neutrino factory Thursday, 9 September 2021 12:40 (20 minutes)

The FCC : a (Heavy) Neutrino Factory The Future Circular Collider is at the heart of the vision of the European Strategy forParticle Physics, who placed, as the highest priority for Europe and its international partners, a technical and financial feasibility study of the 100km infrastructure and of the colliders that would bein- stalled in it. The physics programme is based on the sequence of a 90-400 GeV high luminosity and high precision e+e- collider, FCC-ee, followed by a 100 TeV hadron collider FCC-hh including heavy ion and optionally e-p collisions. The physics opportunities of the two machines are remarkably complementary, both machinesof- fering significant opportunities for discoveries in their own right, with a strong neutrino program. We will review the various neutrino physics opportunities offered by the FCC. –Improvement in the measurement of the decay width of the Z into light active neutrinos; – a determination of the neutral coupling of the electron neutrino; – measurements of effective leptonic charged current couplings, sensitive to anomalous effective couplings of the neutrinos, and providing precision tests of lepton universality at O(10 ppm); – direct searches for Heavy Neutrinos in Z decays, down to the see-saw limit, describing the recent observation that the feasibility of discrimination between Dirac or Majorana neutrinos has been demonstrated; – similar searches in real and virtual W, Z and H decays at the FCC-hh and FCC-ep

Working group WG5

Primary author: BLONDEL, Alain (Universite de Geneve (CH)) Presenter: BLONDEL, Alain (Universite de Geneve (CH)) Session Classification: WG 5

September 30, 2021 Page 208 NuFact 2021: The … / Report of Contributions Muon-neutrino charged-current in …

Contribution ID: 253 Type: Oral

Muon-neutrino charged-current interactions at the NOvA near detector Thursday, 9 September 2021 16:20 (20 minutes)

The NOvA near detector (ND), located at Fermilab, provides an excellent opportunity tomeasure neutrino-nucleus interactions, which will benefit current and future neutrino experiments. The ND records a high rate of neutrino interactions with energies ranging from 1-5 GeV. In this talk, we present a measurement of the muon-neutrino charged-current inclusive cross sections as a function of the outgoing muon energy and angle, as well as cross sections in the derived neutrino energy and the square of the four-momentum transfer. We include a comparison of these results with predictions from various neutrino event generators. We also show our progress on the muon-antineutrino charged-current inclusive cross-section analysis. In addition, we present the status of the charged-current muon-neutrino with low hadronic activity analysis. This channel is particularly sensitive to nuclear effects in neutrino interactions, effects that are one of themajor challenges for all neutrino experiments in the few GeV region.

Working group WG2

Primary author: ALIAGA SOPLIN, Leonidas (Fermilab) Presenter: ALIAGA SOPLIN, Leonidas (Fermilab) Session Classification: WG 2

September 30, 2021 Page 209 NuFact 2021: The … / Report of Contributions Simulating the ARAPUCA - DUN …

Contribution ID: 254 Type: Poster

Simulating the ARAPUCA - DUNE’s next generation light sensors

Arapuca is “bird trap” built by Brazil’s natives. On the other hand, our ARAPUCA is a light trap that increases the collection area of regular SiPMs and it is the sensitive element upon which DUNE’s whole photon detection system is based upon. Here we present the journey to build a reliable state-of-the-art simulation of such device, highlighting the process of modeling its dichronic filters, wavelength-shifting wave guides, and silicon photo-multipliers. As a result we obtain its efficiency and are able to study how its performance could be affected by small changes, either intended or not.

Working group WG6

Primary author: VALDIVIESSO, Gustavo (Universidade Federal de Alfenas) Co-authors: MACHADO, Ana (UFABC); SEGRETO, Ettore (UNICAMP); Prof. BEZERRA, Anibal (Universidade Federal de Alfenas)

Presenter: VALDIVIESSO, Gustavo (Universidade Federal de Alfenas) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 210 NuFact 2021: The … / Report of Contributions Recent Results from NOvA

Contribution ID: 255 Type: Poster

Recent Results from NOvA

NOvA is a long-baseline experiment studying neutrino oscillations and measuring cross sections in the Fermilab NuMI neutrino beam. It consists of two functionally identical, fine-grained detectors which are separated by 810 km and situated 14.6 mrad off the NuMI beam axis. By measuring the transition probabilities P (νµ→νe) and P (ν→ν) using both neutrinos and antineutrinos, NOvA 2 is able to probe the following neutrino-mixing parameters: m32, the mixing angle 23, the CP- violating phase CP and the neutrino mass hierarchy. We present the latest NOvA measurements using neutrino and antineutrino disappearance and appearance obtained in 2020.

Working group WG1

Primary author: KAPLAN, Daniel (Illinois Institute of Technology) Presenter: KAPLAN, Daniel (Illinois Institute of Technology) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 211 NuFact 2021: The … / Report of Contributions Towards the measurement of neut …

Contribution ID: 256 Type: Oral

Towards the measurement of neutrino cross section on H2O and CH target at 1 GeV region by T2K-WAGASCI experimet Tuesday, 7 September 2021 17:00 (20 minutes)

The T2K experiment aims to measure CP violation in the lepton sector and the latest T2Kresults show that CP symmetry is violated at 90% confidence level. To achieve higher significance in this measurement it is essential to reduce both statistical and systematic uncertainties. The T2K- WAGASCI detectors have been introduced to T2K experiment as new near detectors to reduce the systematic uncertainty related to the neutrino-nucleus interactions. They are located at 1.5 degree from the neutrino beam axis, a different off-axis angle with respect to the ND280 detector, and T2K-WAGASCI is therefore exposed to a different neutrino flux and will make new measurements of neutrino-nucleus interactions at the JPARC neutrino beam. The T2K-WAGASCI consists of two kinds of neutrino target detectors and muon range detectors. WAGASCI modules have a three-dimensional grid structure of plastic scintillator bars and water target. The Proton Module is a fully-active tracking detector consisting of only scintillator strips. These neutrino detectors are surrounded by two side muon range detectors and BabyMIND,a magnetised downstream muon range detector. Baby MIND consists of iron-core magnet planes, with a magnetic field strength of 1.5 T, and scintillator tracking planes. It enables a reduction of the neutrino background for measurements of antineutrinos and vice versa.

In this talk the analysis status on the cross section measurement on H2O and CH target in the 1 GeV energy region with data set corresponding to 6.5 × 10^20 protons on target will be shown and the potential impact on the T2K oscillation measurement will be discussed.

Working group WG2

Primary author: Mr YASUTOME, Kenji (Kyoto University) Co-author: T2K COLLABORATION Presenter: Mr YASUTOME, Kenji (Kyoto University) Session Classification: WG 2 + WG 6 (WG2 zoom)

September 30, 2021 Page 212 NuFact 2021: The … / Report of Contributions Improved Neutrino Energy Estima …

Contribution ID: 258 Type: Poster

Improved Neutrino Energy Estimation in Neutral Current Interactions with Liquid Argon Time Projection Chambers

Large liquid argon time projection chambers (LAr TPCs) at SBN and DUNE will provide an unprecedented amount of information about GeV-scale neutrino interactions. By taking advantage of the excellent tracking and calorimetric performance of LAr TPCs, we present a novel method for estimating the neutrino energy in neutral current interactions that significantly improves upon conventional methods in terms of energy resolution and bias. We present a toy study exploring the application of this new method to the sterile neutrino search at SBN under a 3+1 model.

Working group

Primary authors: FURMANSKI, Andrew (University of Minnesota); HILGENBERG, Christopher (University of Minnesota)

Presenters: FURMANSKI, Andrew (University of Minnesota); HILGENBERG, Christopher (Univer- sity of Minnesota) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 213 NuFact 2021: The … / Report of Contributions Atmospheric Neutrino Oscillations …

Contribution ID: 259 Type: Oral

Atmospheric Neutrino Oscillations with 8 years of data from IceCube DeepCore Thursday, 9 September 2021 12:58 (18 minutes)

The DeepCore sub-array within the IceCube Neutrino Observatory is a densely instrumented detector embedded in the Antarctic ice designed to observe atmospheric neutrino interactions above 5 GeV via Cherenkov radiation. At these energies, Earth-crossing muon neutrinos have a high chance of oscillating to tau neutrinos. These oscillations have been previously observed in Deep- Core through both muon neutrino disappearance and tau neutrino appearance channels. Deep- Core is able to measure these oscillations with precision comparable to accelerator-based experiments, but it is also complementary to accelerator measurements because it probes longer distance scales and higher energies, peaking above the tau lepton production threshold. This talk will discuss the IceCube Collaboration’s latest analyses of the atmospheric neutrino oscillation parameters using 8 years of data. In addition to several more years of data, these analyses benefit from recent significant efforts in improving background rejection, reconstruction techniques, modeling of systematic uncertainties, particle identification, and much more.

Working group WG1

Primary author: DEHOLTON, Kayla Leonard Presenter: DEHOLTON, Kayla Leonard Session Classification: WG 1

September 30, 2021 Page 214 NuFact 2021: The … / Report of Contributions Muon g-2/EDM experiment at J- …

Contribution ID: 260 Type: Oral

Muon g-2/EDM experiment at J-PARC Thursday, 9 September 2021 16:30 (30 minutes)

The muon g-2/EDM experiment at J-PARC (E34) aims to measure muon g-2 and EDM with unprecedented low-emittance muon beam realized by acceleration of thermal muons. Thanks to its low emittance, it can measure muon g-2 in a completely different way thanFNALor BNL. The technical design of the experiment has been completed and the budget is being requested to start the experiment in 2025. In the first phase of the experiment, measurement of g-2 with a precision of 0.45 ppmwillbe achieved through two years of data acquisition. The measurement is statistically limited and the accuracy of 0.1 ppm will be achieved through subsequent upgrades of the beam intensity. In this talk, details and current status of the experiment will be presented.

Working group WG4

Primary author: MASASHI, Otani (KEK) Presenter: MASASHI, Otani (KEK) Session Classification: WG 4

September 30, 2021 Page 215 NuFact 2021: The … / Report of Contributions Flavour dependence and Coulomb …

Contribution ID: 261 Type: Poster

Flavour dependence and Coulomb corrections for charged current neutrino-nucleus scattering

QED effects are controllable and calculable corrections that must be understood for percent-level neutrino cross section inputs. Of particular importance are “enhanced” corrections stemming from either large-logs or coherent effects. Of particular importance are corrections that depend on lepton mass, or the sign of the charged lepton that is produced. In the former case, the mass dependence inherited from the charged lepton results in a neutrino-flavour dependent correction, while in the latter case it introduces an additional discrepancy between neutrino and antineutrino cross sections.

In this talk I will discuss recent progress towards a rigorous treatment of Coulomb corrections that stem from the coherent exchange of soft-photons between the outgoing lepton and the final nuclear state (of charge Z). I will outline the construction of an effective field theory that is appropriate for high-energy lepton kinematics and that can capture all-order behaviour in Z\alpha via high energy expansion. A power-counting scheme for the computation of distorted-wave matrix elements in the high energy limit will be presented, which allows for an analytic description of Coulomb corrections. Useful phenomenological examples will be highlighted.

Working group WG2

Primary authors: TOMALAK, Oleksandr (University of Kentucky); HILL, Ryan; PLESTID, Ryan (University of Kentucky)

Presenter: PLESTID, Ryan (University of Kentucky) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 216 NuFact 2021: The … / Report of Contributions Detectors for future CLFV experim …

Contribution ID: 264 Type: Oral

Detectors for future CLFV experiments Wednesday, 8 September 2021 14:20 (30 minutes)

Charged lepton flavor violation is heavily suppressed in the standard model, and its observation would be a clear evidence of new physics. Planned experiments in the muon sector are aiming at discovering or improving exclusion limits by several orders of magnitude by the end of the decade. New ideas and detector concepts have been recently proposed to further increase the experimental sensitivity. In this talk, we will review some of the technologies discussed for the next generation of muon CLFV experiments.

Working group WG4

Presenter: ECHENARD, Bertrand (California Institute of Technology) Session Classification: WG 4 + WG 6 (WG4 zoom)

September 30, 2021 Page 217 NuFact 2021: The … / Report of Contributions Search for LFV with the Mu3e exp …

Contribution ID: 265 Type: Oral

Search for LFV with the Mu3e experiment Tuesday, 7 September 2021 16:30 (30 minutes)

The Mu3e experiment is designed to search for the lepton flavor violating decay µ → e+e+e−. The ultimate aim of the experiment is to reach a branching ratio sensitivity of10−16. The experiment is located at the Paul Scherrer Institute (Switzerland) and an existing beamline providing 108 muons per second will allow to reach a sensitivity of a few 10−15 in the first phase of the experiment. The muons with a momentum of about 28 MeV/c are stopped and decay at rest onatarget. The decay products (positrons and electrons) with energies below 53 MeV are measured by atrack- ing detector consisting of two double layers of 50 µm thin high-voltage monolithic active pixel sensors. The high granularity of pixel detector with a pixel sizeof80µm×80µm together with the small material budget allows for a precise track reconstruction. Two timing detectors (scintillating tiles and fibres) provide precise timing information, allowing to further suppress combinatorial background. The full Geant4-based detector simulation with the final geometry and reconstruction software indicate that a background-free measurement is possible. The design and prototyping of the detector are finalized, the solenoid magnet is installed, andthe integration and commissioning has started with this year. The talk presents the detector and readout system design, as well as performance studies ofthe first phase of the experiment. The plans for commissioning and first data taking will be discussed.

Working group WG4

Primary author: KOZLINSKIY, Alexandr (Institut für Kernphysik, Johannes Gutenberg-Universität Mainz)

Presenter: KOZLINSKIY, Alexandr (Institut für Kernphysik, Johannes Gutenberg-Universität Mainz)

Session Classification: WG 4

September 30, 2021 Page 218 NuFact 2021: The … / Report of Contributions Searches for lepton flavour/numbe …

Contribution ID: 266 Type: Oral

Searches for lepton flavour/number violation in K+ and pi0 decays at the NA62 experiment Wednesday, 8 September 2021 16:00 (30 minutes)

The NA62 experiment at CERN collected a large sample of charged kaon decays into finalstates with multiple charged particles in 2016-2018. This sample provides sensitivities to rare decays with branching ratios as low as 10−11. Results from searches for lepton flavour/number violating decays of the charged kaon and the neutral pion to final states containing a lepton pair based on this data set are presented.

Working group WG4

Primary author: SWALLOW, Joel Christopher (University of Birmingham (GB)) Presenter: SWALLOW, Joel Christopher (University of Birmingham (GB)) Session Classification: WG 4

September 30, 2021 Page 219 NuFact 2021: The … / Report of Contributions The Mu2e experiment at Fermilab

Contribution ID: 267 Type: Oral

The Mu2e experiment at Fermilab Tuesday, 7 September 2021 17:00 (30 minutes)

he Mu2e experiment, under construction at Fermilab, will search for the neutrinoless coherent conversion of the muon into an electron in the field of an aluminum nucleus. This Charged Lepton Flavor Violating (CLFV) process has a very clear signature, a single monoenergetic electron with energy slightly below the muon rest mass. The Mu2e experiment aims to improve by four orders of magnitude the current best limit on the ratio (Rμe) between the conversion and muon capture rates and reach a single event sensitivity of 3×10−17 on Rμe. Another important physics goal would be that of searching for a Lepton Number Violating (LNV) process. Neutrinoless double beta decay (0νββ) has set the most stringent limit on this kind of process. The conversion of stopped negative muons to positrons in the field of anucleus, μ−+N(A,Z)→e++N(A,Z−2), is an example of both CLFV and LNV. Mu2e will use a intense, pulsed, negative muon beam sent to an aluminum target for a total number of 1018 stopped muons. The production and transport of the muons is achieved with aso- phisticated magnetic system comprised of a production, a transport and a detector solenoid. The Detector Solenoids hosts the stopping target made of aluminum followed by a straw-tube tracker and electromagnetic calorimeter. The entire detector region is surrounded by a Cosmic RayVeto system. Mu2e is under construction at the Muon Campus at Fermilab. Requirements, tests on prototypes, and status of the production will be discussed. The experiment will start in late 2023 and will take 4-5 years of data-taking to reach our goal.

Presenter: PEZZULLO, Gianantonio (Yale University) Session Classification: WG 4

September 30, 2021 Page 220 NuFact 2021: The … / Report of Contributions Mu2e-II An Upgrade of the Mu2e …

Contribution ID: 268 Type: Oral

Mu2e-II An Upgrade of the Mu2e for the Fermilab PIP-II Era Wednesday, 8 September 2021 13:10 (30 minutes)

Presenter: DUKES, Edmond Session Classification: WG 4

September 30, 2021 Page 221 NuFact 2021: The … / Report of Contributions StrECAL system for COMET …

Contribution ID: 269 Type: not specified

StrECAL system for COMET Phase-I and Phase-II Wednesday, 8 September 2021 15:20 (30 minutes)

Author: Hajime Nishiguchi

The COMET Experiment at J-PARC aims to search for the lepton flavour violating process ofmuon to electron conversion in a muonic atom, μ−N→e−N, with a 90% confedence level branching-ratio sensitivity of 6×10−17, in order to explore the parameter region predicted by most well-motivated theoretical models beyond the Standard Model. The need for this sensitivity places several stringent requirements on both the muon beam and the detector system. In order to realize the experiment effectively and timely, a staged approach to deployment is employed. At thePhase-I experiment, a precise muon-beam measurement will be conducted, and a search for μ−N→e−N will also be carried out with an intermediate sensitivity of 7×10−15. The beam measurement in Phase-I experiment and the search for μ−N→e−N with the final sensitivity in Phase-II experiment will be performed by a combined detector system with Straw tracker and ECAL, called StrECAL system. To enable the required momentum resolution (<200 keV/c) for low energy electron signal (=105 MeV), a material budget of tracking detector is essential, i.e. thin-wall straw tracker operational in vacuum is employed. In addition, to enable good enough energy/spacial resolutions for the required trigger (σE/E =5% and σx=1cm for a 105 MeV electron), highly segmented LYSO crystal viewed with APD is employed as an electromagnetic calorimeter. In this contribution, current status on the R&D and the construction of StrECAL system for COMET Phase-I and Phase-II both will be given.

Presenter: NISHIGUCHI, Hajime (KEK) Session Classification: WG 4 + WG 6 (WG4 zoom)

September 30, 2021 Page 222 NuFact 2021: The … / Report of Contributions Muon beams at Fermilab

Contribution ID: 270 Type: Oral

Muon beams at Fermilab Thursday, 9 September 2021 13:20 (25 minutes)

Presenter: STRATAKIS, Diktys (Fermilab) Session Classification: WG 3 + WG 4 (WG3 zoom)

September 30, 2021 Page 223 NuFact 2021: The … / Report of Contributions MuSIC targetry and beam transpo …

Contribution ID: 271 Type: Oral

MuSIC targetry and beam transport line Thursday, 9 September 2021 13:45 (25 minutes)

TBA WG3 contribution

Presenter: SATO, Akira (Osaka University) Session Classification: WG 3 + WG 4 (WG3 zoom)

September 30, 2021 Page 224 NuFact 2021: The … / Report of Contributions The SM value of g-2

Contribution ID: 272 Type: Oral

The SM value of g-2 Thursday, 9 September 2021 16:00 (30 minutes)

In light of the recent FNAL g-2 result, the most up to date Standard Model value of the muon anomalous magnetic moment will be discussed.

Presenter: Dr STOFFER, Peter (Iniversität Wien) Session Classification: WG 4

September 30, 2021 Page 225 NuFact 2021: The … / Report of Contributions Inelastic Axial and Vector Structur …

Contribution ID: 273 Type: Oral

Inelastic Axial and Vector Structure Functions for Electron- and Neutrino- Nucleon Scattering 2021 Update Wednesday, 8 September 2021 13:52 (18 minutes)

We report on an update (2021) of a phenomelogical model for inelastic neutrino- and electron- nucleon scattering cross sections using effective leading order parton distribution functions with a new scaling variable ξw. Non-perturbative effects are well described using the ξw scaling variable in combination with multiplicative K factors at low Q2. The model describes all inelastic charged lepton-nucleon scattering data (HERA/NMC/BCDMS/SLAC/JLab) ranging from very high Q2to very low Q2 and down to the Q2 = 0 photo-production region. The model has been developed to be used in analysis of neutrino oscillation experiments in the few GeV region. The 2021 update accounts for the difference between axial and vector structure function which brings it intobetter agreement with existing inelastic neutrino-nucleon scattering measurements.

Working group WG2

Primary authors: BODEK, Arie (University of Rochester (US)); YANG, Un Ki (Seoul National University (KR)); XU, Yang (University of Rochester) Presenter: BODEK, Arie (University of Rochester (US)) Session Classification: WG 2

September 30, 2021 Page 226 NuFact 2021: The … / Report of Contributions Latest results from T2K

Contribution ID: 274 Type: Oral

Latest results from T2K Wednesday, 8 September 2021 13:02 (22 minutes)

Presenter: LAGODA, Justyna (National Centre for Nuclear Research (PL)) Session Classification: WG 1

September 30, 2021 Page 227 NuFact 2021: The … / Report of Contributions Latest results from Daya Bay react …

Contribution ID: 275 Type: Oral

Latest results from Daya Bay reactor neutrino experiment Wednesday, 8 September 2021 14:20 (18 minutes)

Presenter: Prof. OCHOA-RICOUX, Juan Pedro (University of California - Irvine) Session Classification: WG 1

September 30, 2021 Page 228 NuFact 2021: The … / Report of Contributions HV-MAPS

Contribution ID: 279 Type: Oral

HV-MAPS Wednesday, 8 September 2021 14:50 (30 minutes)

High Voltage Monolithic Active Pixel Sensors (HV-MAPS) use a commercial CMOS process quali- fied for voltages up to 120 V. This allows for a fast charge collection. At the same time theread-out electronics is integrating on the chip. With a very thin active region, the sensors can be thinned to below 50 μm. This makes HV-MAPS ideally suited for tracking low momentum particles atvery high rates. A HV-MAPS based tracking detector is currently being build for the upcoming Mu3e experiment, and is (among other experiments) being considered for Atlas and LHCb detector upgrades. This talk will provide an overview of the HV-MAPS technology and upcoming applications.

Presenter: SCHOENING, Andre (Ruprecht Karls Universitaet Heidelberg (DE)) Session Classification: WG 4 + WG 6 (WG4 zoom)

September 30, 2021 Page 229 NuFact 2021: The … / Report of Contributions NuWro Strategy and Recent Devel …

Contribution ID: 280 Type: Oral

NuWro Strategy and Recent Development Wednesday, 8 September 2021 12:40 (18 minutes)

NuWro is a versatile Monte Carlo neutrino event generator, applicable for simulations in the energy range of the accelerator-based neutrino oscillation experiments. Since 2005, the theoretical group of the University of Wrocław, Poland, has been extensively working on its development, successfully comparing to various neutrino cross section measurements. NuWro is a vital tool for event generation in many experimental collaborations, providing a lightweight framework for model development and original solutions. In this talk, we will present recent developments and advances in model implementations conducted within NuWro. Among others, we will demonstrate the phenomenological 2p2h model, hyperon production, and neutrino scattering off atomic electrons. We will emphasise thenew philosophy of implementing more exclusive, computationally demanding models. Then, we will show the results of the Ghent low-energy model of single-pion production implemented within this strategy of using precomputed assets and importance sampling methods

[Phys.Rev. D 103 (2021) 053003].

Working group WG2

Primary author: NIEWCZAS, Kajetan (UWR) Presenter: NIEWCZAS, Kajetan (UWR) Session Classification: WG 2

September 30, 2021 Page 230 NuFact 2021: The … / Report of Contributions ESS Accelerator Status and Comm …

Contribution ID: 281 Type: not specified

ESS Accelerator Status and Commissioning Plans Wednesday, 8 September 2021 12:40 (30 minutes)

The European Spallation Source (ESS), currently under construction in Lund, Sweden, willbethe brightest spallation neutron source in the world, when its driving proton linac. Such a high power requires production, efficient acceleration, and almost no-loss transport of a high current beam, thus making design and beam commissioning of this machine challenging. achieves the design power of 5 MW at 2 GeV. The linac could be used for projects like the ESS Neutrino Super Beam (ESSNuSB), currently, an ongoing project to study the viability of using the ESS linac as a driver for a neutrino beam by interleaving a H- beam with the protons and further increasing the machine average power to 10MW. The ion source and LEBT commissioning happened already in 2018/2019 and will continue with the RFQ in 2021, MEBT and all DTL tanks in the following year. This talk will summarise the status of the linac project and commissioning, with focus on the normal conducting linac plans.

Presenter: MILAS, Natalia (ESS) Session Classification: WG 3

September 30, 2021 Page 231 NuFact 2021: The … / Report of Contributions An Upgrade Path for the Fermilab …

Contribution ID: 282 Type: not specified

An Upgrade Path for the Fermilab Accelerator Complex Wednesday, 8 September 2021 13:10 (30 minutes)

Presenter: ELDRED, Jeffrey (Fermilab) Session Classification: WG 3

September 30, 2021 Page 232 NuFact 2021: The … / Report of Contributions New proton beam monitors for J- …

Contribution ID: 283 Type: Oral

New proton beam monitors for J-PARC neutrino experiment Wednesday, 8 September 2021 14:20 (30 minutes)

Presenter: FRIEND, Megan (High Energy Accelerator Research Organization (JP)) Session Classification: WG 3

September 30, 2021 Page 233 NuFact 2021: The … / Report of Contributions New muon monitor for J-PARC ne …

Contribution ID: 284 Type: not specified

New muon monitor for J-PARC neutrino experiment Wednesday, 8 September 2021 14:50 (30 minutes)

Working group

Presenter: NAKAMURA, Hina (Tokyo University of Science) Session Classification: WG 3

September 30, 2021 Page 234 NuFact 2021: The … / Report of Contributions Megawatt upgrade of NuMI target …

Contribution ID: 285 Type: not specified

Megawatt upgrade of NuMI target system Wednesday, 8 September 2021 15:20 (30 minutes)

Presenter: YONEHARA, Katsuya (Fermilab) Session Classification: WG 3

September 30, 2021 Page 235 NuFact 2021: The … / Report of Contributions Discussion for a muon acceleration

Contribution ID: 286 Type: not specified

Discussion for a muon acceleration Thursday, 9 September 2021 17:00 (30 minutes)

Presenter: YONEHARA, Katsuya (Fermilab) Session Classification: WG 3

September 30, 2021 Page 236 NuFact 2021: The … / Report of Contributions Beyond-Standard-Model Neutrino …

Contribution ID: 287 Type: Oral

Beyond-Standard-Model Neutrino Oscillations Studies in IceCube Tuesday, 7 September 2021 16:44 (22 minutes)

The IceCube Neutrino Observatory has detected hundreds of thousands of atmospheric neutrinos at propagation baselines from 100 to 12,800 km and energies from a few GeV to 100 TeV. Above 100 GeV where ordinary oscillation effects become vanishingly small, this data sample offers theop- portunity to search for and set constraints on a wide range of beyond-standard-model oscillation mechanisms. These include the effects of sterile neutrinos, non-standard interactions, anomalous decoherence, and Lorentz violation. In this presentation I will update on the latest IceCube results and ongoing searches for Beyond-Standard-Model oscillation physics at high energy, with a particular focus on recent studies of neutrino nucleus non-standard interactions.

Working group WG5

Primary author: PARKER, Grant Presenter: PARKER, Grant Session Classification: WG 1 + WG 5 (WG1 zoom)

September 30, 2021 Page 237 NuFact 2021: The … / Report of Contributions NEUT Strategy

Contribution ID: 288 Type: Oral

NEUT Strategy Wednesday, 8 September 2021 12:58 (18 minutes)

NEUT is a neutrino-nucleus interaction simulation program library and used for the analyses of Super-K and T2K. Recently, NEUT is also used to simulate pion interactions with the nucleus in the detector simulation. In order to make the users access various functions in NEUT, we have started a project to design a set of new APIs for easy access to the implemented total and interaction channel-level cross- sections, simulation of individual interaction to generate kinematics functions, and so on. At the same time, we also plan to update the existing detector geometry and flux handling programs for the T2K experiment to make it more generic. In this talk, we will also report the recent status and plan to implement new physics models, like SuSAv2/RMF CCQE models, MK and DCC 1pi models, improvements of the NC DIS implementation, together with the direction of future development.

Working group WG2

Primary author: Dr HAYATO, Yoshinari (University of Tokyo) Presenter: Dr HAYATO, Yoshinari (University of Tokyo) Session Classification: WG 2

September 30, 2021 Page 238 NuFact 2021: The … / Report of Contributions MicroBooNE modelling and dedica …

Contribution ID: 289 Type: Oral

MicroBooNE modelling and dedicated tuning, a test case for future LArTPC experiments Wednesday, 8 September 2021 16:54 (18 minutes)

TBA

Working group WG2

Primary author: Dr GARDINER, Steven (Fermilab) Presenter: Dr GARDINER, Steven (Fermilab) Session Classification: WG1+WG2 (WG1 zoom)

September 30, 2021 Page 239 NuFact 2021: The … / Report of Contributions Lepton-nucleus interactions withi …

Contribution ID: 290 Type: Oral

Lepton-nucleus interactions within the spectral function approach Thursday, 9 September 2021 12:40 (18 minutes)

The advent of high precision measurements of neutrinos and their oscillations calls for accurate predictions of their interactions with nuclear targets utilized in the detectors. Achieving a comprehensive description of the different reaction mechanisms active in the broad range of energy relevant for oscillation experiments is a formidable challenge for both particle and nuclear Physics. I will present an overview of recent developments in the description of electroweak interactions within the spectral function approach and discuss the future perspectives to support the experimental effort in this new precision era.

Working group WG2

Primary author: Dr ROCCO, Noemi (Fermilab) Presenter: Dr ROCCO, Noemi (Fermilab) Session Classification: WG 2

September 30, 2021 Page 240 NuFact 2021: The … / Report of Contributions Weak structure functions in νl−N a …

Contribution ID: 291 Type: Oral

Weak structure functions in νl−N and νl−A scattering with nonperturbative and higher order perturbative QCD effects Thursday, 9 September 2021 16:58 (18 minutes)

The effect of nonperturbative and higher order perturbative corrections to all the free nucleon structure functions in the deep inelastic scattering (DIS) of neutrinos on nucleon/nucleus is studied. The target mass correction and higher twist effects are incorporated following the works ofKretzer et al. and Dasgupta et al., respectively. The evaluation of the nucleon structure functions has been performed by using the MartinMotylinski Harland-LangThorne 2014 parametrization of the parton distribution functions. The calculations have been performed at the next-to-leading order. The results for the nucleon/nuclear structure functions shall be presented. The various effects considered in this work are effective in the different regions of x and Q2, and quite important in the few GeV energy region. The numerical calculations for the ν -A deep inelastic scattering (DIS) process have been performed by incorporating the nuclear medium effects like Fermi motion, binding energy, nucleon correlations, mesonic contributions, shadowing, and antishadowing in several nuclear targets such as carbon, polystyrene scintillator, iron, and lead, which are being used in MINERA, and in argon nuclei, which is relevant for the ArgoNeuT and DUNE experiments.

Working group WG2

Primary author: Dr HAIDER, Huma (Aligarh Muslim University ) Presenter: Dr HAIDER, Huma (Aligarh Muslim University ) Session Classification: WG 2

September 30, 2021 Page 241 NuFact 2021: The … / Report of Contributions Status of lepton universality tests …

Contribution ID: 292 Type: Oral

Status of lepton universality tests and searches forcharged lepton violation at CMS Wednesday, 8 September 2021 16:30 (30 minutes)

Extensive tests of standard model predictions are carried on by the CMS experiment at the CERN LHC. The observation of the violation of lepton number conservation would certainly beasig- nature of new physics beyond the standard model. The talk will review various tests of lepton universality and the status of the searches for charged lepton violation at CMS.

Working group WG4

Primary author: GALLINARO, Michele (LIP Lisbon) Presenter: GALLINARO, Michele (LIP Lisbon) Session Classification: WG 4

September 30, 2021 Page 242 NuFact 2021: The … / Report of Contributions Search for Tau -> 3mu decays with …

Contribution ID: 293 Type: Poster

Search for Tau -> 3mu decays with CMS experimentat LHC

New results are presented for the search for charged lepton flavor violating decays of tau leptons to three muons with the CMS detector. The search employs tau leptons produced in decays of heavy flavor B/D mesons and W bosons.

Working group WG4

Primary author: ARUTA, Caterina (Universita e INFN, Bari (IT)) Presenter: ARUTA, Caterina (Universita e INFN, Bari (IT)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 243 NuFact 2021: The … / Report of Contributions The influence of cross section unc…

Contribution ID: 294 Type: Oral

The influence of cross section uncertainties on oscillation physics Thursday, 9 September 2021 13:34 (18 minutes)

Current and future accelerator-based neutrino facilities utilizing intense neutrino beams and advanced neutrino detectors are focused on precisely determining neutrino oscillation properties and signals of weakly interacting Beyond the Standard Model (BSM) physics. These are all sub- tle effects, such as extracting the CP violation phase and disentangling parameter degeneracies between oscillation effects and BSM physics, and require an unprecedented level of precision in measurements. The potential of achieving discovery-level precision and fully exploring the physics capabilities of these experiments relies greatly on the precision with which the fundamental underlying neutrino-nucleus interaction processes are known. A non-trivial multi-scale, multi-process problem that lies in an uncharted territory that spans from low-energy nuclear physics to perturbative QCD with no known underlying unified physics. Therefore, multiple cross-community efforts are required to tackle such a problem and establish global constraints on neutrino-nucleus interaction physics that can enable desired precision in neutrino experiments. In this talk, I will discuss these challenges and highlight some of the recent cross-community experimental and theoretical efforts of tackling them.

Working group WG2

Primary author: Dr PANDEY, Vishvas (University of Florida) Presenter: Dr PANDEY, Vishvas (University of Florida) Session Classification: WG 2

September 30, 2021 Page 244 NuFact 2021: The … / Report of Contributions Exhaustive neural importance sam …

Contribution ID: 295 Type: Oral

Exhaustive neural importance sampling applied to Monte Carlo event generation Wednesday, 8 September 2021 13:34 (18 minutes)

The generation of accurate neutrino-nucleus cross section models needed for neutrino oscillation experiments requires simultaneously the description of many degrees of freedom and precise calculations to model nuclear responses. The detailed calculation of complete models makes the Monte Carlo generators slow and impractical. We present exhaustive neural importance sampling, a method based on normalizing flows to find a suitable proposal density for rejection sampling automatically and efficiently, and discuss how this technique solves common issues of the rejection algorithm

Working group WG2

Primary author: Dr PINA-OTEY , Sebastian (University of Geneva) Presenter: Dr PINA-OTEY , Sebastian (University of Geneva) Session Classification: WG 2

September 30, 2021 Page 245 NuFact 2021: The … / Report of Contributions Modelling issues for NOvA

Contribution ID: 296 Type: Oral

Modelling issues for NOvA Wednesday, 8 September 2021 17:12 (18 minutes)

NOvA is a neutrino oscillation experiment that has the primary goal of measuring δCP , θ23, and 2 ∆m32, with the potential to resolve the octant of θ23 and the mass ordering. NOvA seeks to achieve these goals by using a narrowband beam of muon neutrinos and muon antineutrinos with an energy peak near 2 GeV. Using this beam, NOvA observes both the disappearance of the muon neutrinos (antineutrinos) and the appearance of electron neutrinos (antineutrinos). The extraction of the oscillation parameters from these observations are dependent on the accurate modeling of neutrino cross sections. In this talk, I will discuss how NOvA constrains the cross section model used for the disappearance and appearance analyses and the impact of the model uncertainties on the extraction of the oscillation parameters.

Working group WG2

Primary author: Prof. PAWLOSKI, Greg (University of Minnesota) Presenter: Prof. PAWLOSKI, Greg (University of Minnesota) Session Classification: WG1+WG2 (WG1 zoom)

September 30, 2021 Page 246 NuFact 2021: The … / Report of Contributions WG1

Contribution ID: 297 Type: not specified

WG1 Monday, 6 September 2021 09:00 (20 minutes)

Presenter: TANG, Jian (Sun Yat-Sen University) Session Classification: Plenary

September 30, 2021 Page 247 NuFact 2021: The … / Report of Contributions WG2

Contribution ID: 298 Type: not specified

WG2 Monday, 6 September 2021 09:20 (20 minutes)

Presenter: ASHKENAZI, adi (Massachusetts Institute of Technology) Session Classification: Plenary

September 30, 2021 Page 248 NuFact 2021: The … / Report of Contributions WG3

Contribution ID: 299 Type: not specified

WG3 Monday, 6 September 2021 09:40 (20 minutes)

Presenter: YONEHARA, Katsuya (Fermilab) Session Classification: Plenary

September 30, 2021 Page 249 NuFact 2021: The … / Report of Contributions WG4

Contribution ID: 300 Type: not specified

WG4 Monday, 6 September 2021 10:00 (20 minutes)

Presenter: WAUTERS, Frederik (Universität Mainz) Session Classification: Plenary

September 30, 2021 Page 250 NuFact 2021: The … / Report of Contributions WG5

Contribution ID: 301 Type: Oral

WG5 Monday, 6 September 2021 10:20 (20 minutes)

Working group

Presenter: RUIZ, Richard (Institute of Nuclear Physics (IFJ) PAN) Session Classification: Plenary

September 30, 2021 Page 251 NuFact 2021: The … / Report of Contributions WG6

Contribution ID: 302 Type: not specified

WG6 Monday, 6 September 2021 10:40 (20 minutes)

Presenter: NISHIMURA, Yasuhiro (Keio University) Session Classification: Plenary

September 30, 2021 Page 252 NuFact 2021: The … / Report of Contributions WG1

Contribution ID: 303 Type: not specified

WG1 Saturday, 11 September 2021 14:20 (30 minutes)

Presenter: MCCAULEY, Neil (University of Liverpool) Session Classification: Plenary

September 30, 2021 Page 253 NuFact 2021: The … / Report of Contributions WG2

Contribution ID: 304 Type: not specified

WG2 Saturday, 11 September 2021 14:50 (30 minutes)

Working group

Presenter: JACHOWICZ, Natalie (Ghent University (BE)) Session Classification: Plenary

September 30, 2021 Page 254 NuFact 2021: The … / Report of Contributions WG3

Contribution ID: 305 Type: not specified

WG3 Saturday, 11 September 2021 15:20 (30 minutes)

Working group

Presenter: ESHRAQI, Mohammad (ESS - European Spallation Source (SE)) Session Classification: Plenary

September 30, 2021 Page 255 NuFact 2021: The … / Report of Contributions WG4

Contribution ID: 306 Type: not specified

WG4 Saturday, 11 September 2021 16:00 (30 minutes)

Presenter: WAUTERS, Frederik (Universität Mainz) Session Classification: Plenary

September 30, 2021 Page 256 NuFact 2021: The … / Report of Contributions WG5

Contribution ID: 307 Type: not specified

WG5 Saturday, 11 September 2021 16:30 (30 minutes)

Presenter: SHOEMAKER, Ian (Virginia Tech) Session Classification: Plenary

September 30, 2021 Page 257 NuFact 2021: The … / Report of Contributions WG6

Contribution ID: 308 Type: not specified

WG6 Saturday, 11 September 2021 17:00 (30 minutes)

Presenter: SGALABERNA, Davide (ETH Zurich (CH)) Session Classification: Plenary

September 30, 2021 Page 258 NuFact 2021: The … / Report of Contributions Particle Physics Role Play Games i …

Contribution ID: 309 Type: not specified

Particle Physics Role Play Games in introductory physics courses Friday, 10 September 2021 09:00 (20 minutes)

Presenter: GALANTE, Lorenzo (Politecnico di Torino) Session Classification: Special session

September 30, 2021 Page 259 NuFact 2021: The … / Report of Contributions Creativity at its best: making scien …

Contribution ID: 310 Type: Oral

Creativity at its best: making science by making art Friday, 10 September 2021 09:20 (20 minutes)

Presenter: TUVERI, Matteo (INFN - National Institute for Nuclear Physics) Session Classification: Special session

September 30, 2021 Page 260 NuFact 2021: The … / Report of Contributions Warning!”: an interdisciplinary pr …

Contribution ID: 311 Type: Oral

Warning!”: an interdisciplinary project to discuss about the big planetary threats Friday, 10 September 2021 09:40 (20 minutes)

Working group

Presenter: MAZZONI, Enrico (INFN-Pisa) Session Classification: Special session

September 30, 2021 Page 261 NuFact 2021: The … / Report of Contributions Analysis of the management of co …

Contribution ID: 312 Type: not specified

Analysis of the management of conference presentations in the CMS collaboration Friday, 10 September 2021 10:00 (20 minutes)

Presenter: MEYER, Arnd (Rheinisch Westfaelische Tech. Hoch. (DE)) Session Classification: Special session

September 30, 2021 Page 262 NuFact 2021: The … / Report of Contributions Involving the new generations in F …

Contribution ID: 313 Type: not specified

Involving the new generations in Fermilab future endeavours Friday, 10 September 2021 10:20 (20 minutes)

Presenter: DONATI, Simone (University of Pisa and Istituto Nazionale di Fisica Nucleare) Session Classification: Special session

September 30, 2021 Page 263 NuFact 2021: The … / Report of Contributions New particle search with the REIN …

Contribution ID: 314 Type: not specified

New particle search with the REINFORCE citizen science project Friday, 10 September 2021 10:40 (20 minutes)

Presenter: KOURKOUMELIS, Christine (National and Kapodistrian University of Athens (GR))

Session Classification: Special session

September 30, 2021 Page 264 NuFact 2021: The … / Report of Contributions How high school teachers can help …

Contribution ID: 315 Type: not specified

How high school teachers can help narrow the gender gap in STEM education

Presenter: KULSHRESTH, Niharika (The Scindia School) Session Classification: Special session

September 30, 2021 Page 265 NuFact 2021: The … / Report of Contributions How high school teachers can help …

Contribution ID: 316 Type: Oral

How high school teachers can help narrow the gender gap in STEM education Friday, 10 September 2021 11:00 (20 minutes)

Presenter: KULSHRESTH, Niharika (The Scindia School) Session Classification: Special session

September 30, 2021 Page 266 NuFact 2021: The … / Report of Contributions Leptogenesis from the Asymmetri …

Contribution ID: 317 Type: Poster

Leptogenesis from the Asymmetric Texture

In a seesaw scenario, GUT and family symmetry can severely constrain the structure of the Dirac and Majorana mass matrices of neutrinos. We will discuss an interesting case where these matrices are related in such a way that definite predictions for light neutrino masses are achieved without specifying the seesaw scale. This opens up the possibility to consider both high- and low-scale leptogenesis. We will explore both of these possibilities in an SU(5) × T13 model and show that sub-GeV right-handed neutrinos with active-sterile mixing large enough to be probed by DUNE can explain baryon asymmetry of the Universe through resonant leptogenesis.

Working group WG5

Primary author: RAHAT, Moinul (University of Florida) Presenter: RAHAT, Moinul (University of Florida) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 267 NuFact 2021: The … / Report of Contributions First neutrino oscillation measure …

Contribution ID: 318 Type: Oral

First neutrino oscillation measurement with KM3NeT/ORCA Thursday, 9 September 2021 13:34 (18 minutes)

The KM3NeT/ORCA detector is a next-generation neutrino telescope on the bottom of the Mediter- ranean Sea. With a sensitivity optimized for atmospheric neutrinos between 1\,GeV to 100\,GeV, this detector will offer competitive sensitivity for measuring the neutrino mass ordering, aswell 2 as θ23 and ∆m23. Currently under construction, 6 of the 115 planned Detection Units are already installed and are steadily taking data since January 2021. This contribution will present the results from the first neutrino oscillation analysis with 1 year of data. These early results already out-perform the ANTARES measurement, and approach the sensitivity of current world-leading atmospheric neutrino experiments. We will also discuss the latest estimates of the sensitivity of the complete KM3NeT/ORCA detector.

Working group WG1

Primary author: PESTEL, Valentin (Nikhef) Presenter: PESTEL, Valentin (Nikhef) Session Classification: WG 1

September 30, 2021 Page 268 NuFact 2021: The … / Report of Contributions Introduction of the ESSnuSB/HIFI …

Contribution ID: 319 Type: not specified

Introduction of the ESSnuSB/HIFI Design Study program 2022-2025 Tuesday, 7 September 2021 09:00 (20 minutes)

Presenter: DRACOS, Marcos Session Classification: Special session

September 30, 2021 Page 269 NuFact 2021: The … / Report of Contributions Civil engineering and safety requi …

Contribution ID: 320 Type: not specified

Civil engineering and safety requirements for ESSnuSB at the ESS site Tuesday, 7 September 2021 09:20 (20 minutes)

Presenter: KILDETOFT, Boris Session Classification: Special session

September 30, 2021 Page 270 NuFact 2021: The … / Report of Contributions Civil engineering and safety requi …

Contribution ID: 321 Type: not specified

Civil engineering and safety requirements for ESSnuSB at the Far Detector site Tuesday, 7 September 2021 09:40 (20 minutes)

Presenter: SAIANG, David Session Classification: Special session

September 30, 2021 Page 271 NuFact 2021: The … / Report of Contributions Prospects for decay-at-rest and co …

Contribution ID: 322 Type: not specified

Prospects for decay-at-rest and coherent neutrino scattering at ESS Tuesday, 7 September 2021 10:20 (20 minutes)

Presenter: CONRAD, janet (MIT) Session Classification: Special session

September 30, 2021 Page 272 NuFact 2021: The … / Report of Contributions Environment preservation and soc …

Contribution ID: 323 Type: not specified

Environment preservation and societal commitment Tuesday, 7 September 2021 10:00 (20 minutes)

Presenter: CARLILE, Colin (Uppsala University) Session Classification: Special session

September 30, 2021 Page 273 NuFact 2021: The … / Report of Contributions Design of a Low Energy (0.4 GeV) …

Contribution ID: 324 Type: not specified

Design of a Low Energy (0.4 GeV) nuSTORM race-track ring Tuesday, 7 September 2021 10:40 (20 minutes)

Presenter: OLVEGARD, Maja Session Classification: Special session

September 30, 2021 Page 274 NuFact 2021: The … / Report of Contributions Upgrades of the ESSnuSB design r …

Contribution ID: 325 Type: not specified

Upgrades of the ESSnuSB design required to enable tests of the Muon Collider Proton Complex Tuesday, 7 September 2021 11:00 (20 minutes)

Presenter: EKELOF, Tord Johan Carl (Uppsala University (SE)) Session Classification: Special session

September 30, 2021 Page 275 NuFact 2021: The … / Report of Contributions A possible ultimate goal: A Muon …

Contribution ID: 326 Type: not specified

A possible ultimate goal: A Muon Collider Higgs Factor based at ESS Tuesday, 7 September 2021 11:20 (25 minutes)

Presenter: RUBBIA, Carlo (GSSI (Gran Sasso Science Institute)) Session Classification: Special session

September 30, 2021 Page 276 NuFact 2021: The … / Report of Contributions Super-K Gadolinium

Contribution ID: 327 Type: not specified

Super-K Gadolinium Thursday, 9 September 2021 12:50 (20 minutes)

With the addition of 0.02% Gd sulphate to its water in summer 2020, the Super-Kamiokande experiment entered a new phase: SK-Gd. This Gd doping allows for far greater sensitivity to the detection of neutrons emitted in inverse beta decay than with just pure water. This is thanks to gadolinium’s clear neutron capture signal and large neutron capture cross section. This long-awaited chapter in SK’s story aims to deliver exciting new results in the realm of low energy anti electron neutrinos, especially in measuring the diffuse supernova neutrino background. The Gd loading procedure and current status of the detector will be presented.

Presenter: GOLDSACK, Alexander (Oxford University) Session Classification: WG6

September 30, 2021 Page 277 NuFact 2021: The … / Report of Contributions Status of Muon Collider R&D

Contribution ID: 328 Type: Oral

Status of Muon Collider R&D Monday, 6 September 2021 17:35 (30 minutes)

Working group

Presenter: SCHULTE, Daniel (CERN)

September 30, 2021 Page 278 NuFact 2021: The … / Report of Contributions Recent Results from Super- …

Contribution ID: 329 Type: Oral

Recent Results from Super-Kamiokande Thursday, 9 September 2021 12:40 (18 minutes)

Super-Kamiokande is a 50 kton water Cherenkov detector located in Gifu, Japan. The detector has been running for 25 years in 6 distinct phases: SK-I to SK-V and most recently SK-Gd; in this time, it has accumulated a large dataset of atmospheric neutrinos. The atmospheric neutrinos detected at Super-K cover a wide range of energies and pathlengths and travel through various amounts of Earth’s matter. In addition to making measurements of standard three flavour neutrino oscillation parameters, the data is used to study standard andnon- standard matter effects.

In this talk, improvements to the standard atmospheric neutrino analysis and additional non- standard neutrino analysis are presented.

Working group WG1

Primary author: Dr TAANI, Mahdi (King’s College London) Presenter: FERNÁNDEZ MENÉNDEZ, Pablo (University of Liverpool) Session Classification: WG 1

September 30, 2021 Page 279 NuFact 2021: The … / Report of Contributions Trying to improve neutrino oscilla …

Contribution ID: 330 Type: Poster

Trying to improve neutrino oscillation measurements using resonance neutrino interactions

Neutrino oscillation experiments running at low to medium neutrino beam energies usually select “quasi-elastic” neutrino interactions, because they have an easily recognized signature and permit reasonably good neutrino energy reconstruction. Based on generic, simplified Monte-Carlo and oscillation tools, we discuss how the addition of “single pion production” (resonance) interactions could enhance or accelerate neutrino oscillation measurements, as well as the extra challenges that such an addition would pose: the additional systematic errors and neutrino interaction measurements in-situ that would be needed.

Working group WG1

Primary author: STAMOULIS, Panos (UoA) Presenter: STAMOULIS, Panos (UoA) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 280 NuFact 2021: The … / Report of Contributions Hyperfine Splitting in Muonic Hy…

Contribution ID: 331 Type: Poster

Hyperfine Splitting in Muonic Hydrogen (CREMA collaboration)

Energy levels of muonic hydrogen, the bound state of proton and muon, are very sensitive to the inner structure of the proton. The two-photon exchange contribution can be inferred from the ground-state hyperfine splitting (1S‑HFS), the energy separation of the singlet (Fnbsp;=nbsp;0) and triplet (Fnbsp;=nbsp;1) spin states. The CREMA collaboration at the Paul Scherrer Institute aims to measure the 1S‑HFS with an accuracy of 1‑2 ppm to extract the two-photon exchange contribution with a relative accuracy of about 100 ppm by means of laser spectroscopy. A custom pulsed laser system is being built, producing 5 mJ pulses at a tunable wavelength around 6.8 μm and a bandwidth of less than 100 MHz. We will present the measurement principle, and show details of our laser and detection system.

Working group WG4

Primary author: Mr AFFOLTER, Lukas (PSI - Paul Scherrer Institut) Presenter: Mr AFFOLTER, Lukas (PSI - Paul Scherrer Institut) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 281 NuFact 2021: The … / Report of Contributions Mu3e Integration Run 2021

Contribution ID: 332 Type: Poster

Mu3e Integration Run 2021

The Mu3e experiment at the Paul Scherrer Institute searches for the lepton flavour violating decay µ+ → e+e+e−. The experiment aims for an ultimate sensitivity of onein 1016 µ decays. The first phase of the experiment, currently under construction, will reach a branching ratiosen- sitivity of 2 · 10−15 by observing 108 µ decays per second over a year of data taking. The highly granular detector based on thin high-voltage monolithic active pixel sensors (HV- MAPS) and scintillating timing detectors will produce about 100 GB/s of data at these rates. The Field Programmable Gate Array based Mu3e Data Acquisition System will read out this data from the detector and identify interesting events using a farm of graphics processing units. The poster presents the status of the DAQ and first results from the 2021 integration run,which for the first time operated a slice of the Mu3e detector with the muon beamatPSI.

Working group WG4

Primary authors: MU3E, Collaboration ( ); KÖPPEL, Marius Presenter: KÖPPEL, Marius Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 282 NuFact 2021: The … / Report of Contributions Constraining CPT violation with …

Contribution ID: 333 Type: Poster

Constraining CPT violation with Hyper-Kamiokande and ESSnuSB

CPT symmetry is considered to be an exact symmetry of nature. Although no definitive signal of CPT violation has been observed so far, there are many reasons to carefully investigate various low-energy phenomena that can provide better probes to test CPT symmetry. In this context, neutrino experiments are expected to provide more stringent bounds on CPT invariance violations than the Kaon system’s existing bounds. In this work, we investigate the sensitivity of the upcoming long-baseline experiments - Hyper Kamiokande (T2HK, T2HKK) and ESSnuSB to constrain 2 2 the CPT violating parameters ∆(δCP ), ∆(m31) and ∆(sin θ23), which characterize the difference between neutrino and antineutrino oscillation parameters. Further, we analyze neutrino and antineutrino data independently and constrain the oscillation parameters governing them by considering the combination of these experiments (DUNE+T2HKK and DUNE+ESSnuSB). In addition, assuming CPT symmetry is violated in nature, we study the individual ability of the aforementioned experiments to establish CPT violation. We found that the experiments Hyper-Kamiokande (T2HK, T2HKK) and ESSnuSB along with DUNE, will be able to establish CPT violation in their proposed run-times.

Working group WG1

Primary authors: Dr K. N, Deepthi (Mahindra University, Hyderabad, India.); SINGHA, Dinesh Kumar (University of Hyderabad); MAJHI, Rudra (UNIVERSITY OF HYDERABAD); MOHANTA, Ruk- mani

Presenter: SINGHA, Dinesh Kumar (University of Hyderabad) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 283 NuFact 2021: The … / Report of Contributions Production of a high quality beam …

Contribution ID: 334 Type: not specified

Production of a high quality beam for the muon collider Thursday, 9 September 2021 16:30 (30 minutes)

Presenter: ROGERS, Chris (STFC) Session Classification: WG 3

September 30, 2021 Page 284 NuFact 2021: The … / Report of Contributions Charged current interactions on c …

Contribution ID: 335 Type: Poster

Charged current interactions on carbon with a single positively charged pion in the final state at the T2K off-axis near detector with 4π solid angle acceptance

The long-baseline neutrino experiment Tokai-to-Kamiokande (T2K) is located in Japan and ismea- suring neutrino oscillation parameters. The muon neutrino charged current interactions inthe near detector (ND280) are used to predict the event rate at the far detector, in particular constraining the neutrino flux and neutrino-nucleus interaction cross-sections, which are the dominant systematic uncertainties in the oscillation analysis. This poster presents a study of charged current interactions on carbon with a muon andasin- gle positively charged pion in the final state (CC1π+) at the T2K off-axis near detector witha4π solid angle acceptance. This channel constitutes the main background for the muon neutrino disappearance measurement when the charged pion is not observed in the SuperKamiokande water Cherenkov detector, and a precise understanding of it is relevant for all current and planned neutrino oscillation experiments. Single positive pion production is primarily sensitive to resonant processes but also to non-resonant contributions as well as coherent pion production. Addition- ally, final-state interactions in the nuclear target have to be taken into account. A particularly interesting characterization of CC1π interactions through the measurement of Adler Angles is presented. These observables carrying information about the polarization of theDelta resonance and the interference with the non-resonant single pion production.

Working group WG2

Primary authors: VARGAS, Danaisis (Universitat Autonoma de Barcelona (ES)); Prof. LUX, Thorsten (IFAE)

Presenter: VARGAS, Danaisis (Universitat Autonoma de Barcelona (ES)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 285 NuFact 2021: The … / Report of Contributions The Power Distribution System for…

Contribution ID: 336 Type: Poster

The Power Distribution System for the Mu3e Experiment

The Mu3e experiment under construction at the Paul Scherrer Institute, Switzerland, aims tosearch for the lepton flavour violating decay of a muon into one electron and two positrons withan ultimate sensitivity of one in 1016 muon decays. The detector for the Mu3e experiment consists of High-Voltage Monolithic Active Pixel Sensors (HV-MAPS) combined with scintillating tiles and fibres for precise timing measurements. The entire detector and front-end electronics arelocated in the 1m diameter bore of a 1T superconducting magnet. A compact power distribution system based on custom DC-DC converters provide the detector ASICs and readout FPGAs with supply voltages of 1.1V to 3.3V with currents up to 30A per channel. These converters are placed as close as possible to the detector and provide 10kW of power in total. For the whole experiment a total of 126 DC-DC converters is required. The poster presents the results of recent prototype tests and the path to the production of the full power system.

Working group WG4

Primary authors: Mr BINN, Lucas Sebastian (JGU Mainz); GAGNEUR, Sophie (JGU Mainz) Co-authors: BERGER, Niklaus Emanuel (JGU Mainz); Dr WAUTERS, Frederik (JGU Mainz) Presenter: GAGNEUR, Sophie (JGU Mainz) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 286 NuFact 2021: The … / Report of Contributions Development of the pre- …

Contribution ID: 337 Type: Poster

Development of the pre-Supernova Alert System for Super-Kamiokande

The current phase of the Super-Kamiokande experiment, SK-Gd, is characterized by theaddition of gadolinium sulfate to the water Cherenkov detector, which improves the detection capability of thermal neutrons. For low energy events, the main detection channel for electron anti-neutrinos is the Inverse Beta Decay interaction, which has, in its final state, a positron and a neutron. The neutron thermal capture by gadolinium emits gamma-ray cascades with energies about 8 MeV, improving the identification of the products of this process, which reduces the background for lowen- ergy events and allows the analysis of neutrinos with energies below the usual Super-Kamiokande thresholds. One possible detection by SK-Gd is the neutrinos coming from massive stars at the last evolutionary stage before core-collapse Supernova, known as pre-Supernova stars. During this stage, pair annihilation and beta decay processes are the main cooling mechanisms of the stars, emitting high fluxes of electron anti-neutrinos. Their detection could provide an early warningfor core-collapse Supernovae. In this poster it is presented the techniques for the development of a Supernova alert system for Super-Kamiokande based on the detection of pre-Supernova neutrinos and the expected sensitivity.

Working group WG6

Primary author: Dr N MACHADO, Lucas (Universita e sezione INFN di Napoli (IT)) Presenter: Dr N MACHADO, Lucas (Universita e sezione INFN di Napoli (IT)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 287 NuFact 2021: The … / Report of Contributions Semi-inclusive charged-current …

Contribution ID: 341 Type: Poster

Semi-inclusive charged-current neutrino-nucleus reactions: Analysis of Data in the relativistic Plane-Wave Impulse Approximation

Nuclear effects in neutrino-nucleus scattering is one of the main sources of uncertainty in theanal- ysis of neutrino oscillation experiments. At present most of these studies have been focused on inclusive scattering processes where only the scattered lepton is detected in the final state.This implies, due to the extended neutrino energy distribution (flux), that very different reaction mechanisms can contribute to the cross section. Hence the determination of the neutrino energy, required in the analysis of neutrino oscillations, presents a high uncertainty due to effects associated to the nuclear dynamics. This difficulty can be solved significantly by considering semi-inclusive scattering processes in which, in addition to the charged lepton, one hadron is also detectedin the final state. We have presented a detailed description of this process using different nuclear models in 1. Moreover, in the last years different neutrino collaborations have provided semi- inclusive data given in terms of several different kinematical variables linked to the detection of an ejected nucleon from the nucleus. In this work we provide a systematic study comparing our theoretical predictions with all available semi-inclusive data measured by the T2K, MINERνA and MicroBooNE collaborations. Although being aware of the important limitations of the model, we are confident that the present results will help to better understand the nuclear dynamics, providing a more precise knowledge of neutrino oscillation parameters.

1 “Semi-inclusive charged-current neutrino-nucleus cross sections in the relativistic plane wave impulse approximation”. J.M. Franco-Patino, J. Gonzalez-Rosa, J.A. Caballero, M.B. Barbaro. Phys.Rev. C102 6, 064626 (2020)

Working group WG2

Primary author: FRANCO-PATIÑO, Juan Manuel (University of Seville) Co-authors: BARBARO, Maria Benedetta (Universita’ di Torino); CABALLERO, Juan Antonio (Uni- versidad de Sevilla); MEGIAS, Guillermo D. (ICRR, University of Tokyo (Japan) and University of Seville (Spain))

Presenter: FRANCO-PATIÑO, Juan Manuel (University of Seville) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 288 NuFact 2021: The … / Report of Contributions Inelastic neutrino-nucleus scatteri …

Contribution ID: 342 Type: Poster

Inelastic neutrino-nucleus scattering in the superscaling model

The superscaling SuSAv2 model, that was successfully used to explain electron scattering datain the quasielastic (QE) as well as in the high inelastic regions (see 1 and refs. therein), is here extended to charged-current neutrino scattering processes on nuclei. We provide a detailed description of the Delta nucleon resonance and compare our predictions based on the pure Relativistic Fermi Gas (RFG) and SuSAv2 scaling functions with previous results obtained using a Delta scaling function fitted to the analysis of (e,e’) data. The model is extended to the complete neutrino inelastic spectrum, resonant, non-resonant and deep inelastic scattering (DIS), by considering different parametrizations of the weak inelastic single-nucleon structure functions and a Parton Distribu- tion Function (PDF) model. Our predictions, including also two-particle two-hole contributions, are compared with data taken by the T2K collaboration.

1 “Electron- versus neutrino-nucleus scattering”. J.E. Amaro, M.B. Barbaro, J.A. Caballero, R. Gonzalez-Jimenez, G.D. Megias, I. Ruiz Simo. J. of Phys. G47, 124001 (2020).

Working group WG2

Primary author: Mr GONZALEZ ROSA, Jesús (University of Seville) Co-authors: MEGIAS, Guillermo D. (ICRR, University of Tokyo (Japan) and University of Seville (Spain)); BARBARO, Maria Benedetta (Universita’ di Torino); CABALLERO, Juan Antonio (Universidad de Sevilla)

Presenter: Mr GONZALEZ ROSA, Jesús (University of Seville) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 289 NuFact 2021: The … / Report of Contributions Vector leptoquark U3 and its impli …

Contribution ID: 343 Type: Poster

Vector leptoquark U3 and its implications on current long baseline experiments.

In this work, we study the effect of vector leptoquark U3 which can induce nonstandard interactions (NSIs) between the propagating neutrinos and the nucleons within the earth. These interactions lead to relatively large values of NSI parameter εeµ and εeτ . In this context, we show that the current discrepancy between the observed δCP results of T2K and NOvA can be explained in the presence of a vector leptoquark U3. We further study how these interactions can constrain the neutrino oscillation parameters in the context of currently running long baseline experiments.

Working group WG5

Primary authors: Dr K N, Deepthi (Mahindra University); Mr SINGHA, Dinesh Kumar (University of Hyderabad); Mr MAJHI, Rudra (University of Hyderabad); Prof. MOHANTA, Rukmani (University of Hyderabad)

Presenter: Dr K N, Deepthi (Mahindra University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 290 NuFact 2021: The … / Report of Contributions Linear Seesaw in A^\prime_5 Mod …

Contribution ID: 344 Type: Poster

Linear Seesaw in A^\prime_5 Modular symmetry

The framework of this paper is based on super-symmetric linear seesaw where we introduce modu- ′ ≃ ′ lar Γ5 A5 group. In order to explore neutrino phenomenology with well defined mass structure to quite an accuracy we introduce six heavy sfermions along with a scalar. However, modular symmetry reduces the usage of scalars significantly. Here the Yukawa couplings make a trans- formation under the dedekind eta function and also expressed in-terms of q expansion to attend numerical simplicity in calculations.

Working group WG5

Primary author: BEHERA, MITESH KUMAR (UNIVERSITY OF HYDERABAD) Co-author: Prof. MOHANTA, Rukmani (University of Hyderabad) Presenter: BEHERA, MITESH KUMAR (UNIVERSITY OF HYDERABAD) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 291 NuFact 2021: The … / Report of Contributions Status of the KDAR Neutrino mea …

Contribution ID: 345 Type: Poster

Status of the KDAR Neutrino measurement with JSNS2.

The The J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source (JSNS2) experiment has the unique ability to precisely measure monoenergetic 236 MeV neutrinos from charged kaon decay-at-rest (KDAR). J-PARC’s Material and Life Science Facility (MLF) 3 GeV primary proton beam incident on a mercury target generates the world’s most intense source of KDAR which can be used to make neutrino cross-section measurements using known-energy neutrinos. In this poster, I will describe the analysis status for the KDAR neutrino measurement at JSNS2 using the first long-term physics run data set obtained during this year.

Working group WG2

Primary author: JEON, Hyoungku (SungKyunKwan University) Co-author: ROTT, Carsten (Sungkyunkwan University) Presenter: JEON, Hyoungku (SungKyunKwan University) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 292 NuFact 2021: The … / Report of Contributions Real-Time Beam Control Utilizing …

Contribution ID: 346 Type: Poster

Real-Time Beam Control Utilizing In-Situ FPGA-Based Neural Network

Rhea Space Activity (RSA) proposes to develop a real-time beam control with an in-situ FPGA- based neutral net. RSA plans to develop a collection of machine learning (ML) algorithms designed to learn the global features of large parameter spaces with the agility of adaptive feedback methods that are model-independent and can automatically adapt to changing and potential anomalies. This adaptive ML approach will utilize artificial neural networks (ANNs) that can be tuned online to monitor and modify the complex dynamics of neutrino factory accelerator beams. The beam monitoring and control algorithms will be implemented within a high-speed Field-Programmable Gate Array (FPGA) to perform millions of iterative updates within a fraction of a second, providing real-time diagnostics that make predictions between pulses at facilities with beam repetition rates of 0.7-1.2 sec and 10 µs pulse duration. Our goal will be to operate on non-destructive measurements, but to output synthetic time-dependent images of particle bunches typically produced by destructive means. Our plan is to develop a model-independent approach that can be tailored to any accelerator facility, including small scale accelerators used by the medical and military in- dustries, with an initial development plan that is tailored to improve the performance of LBNF at FNAL.

Working group WG3

Primary authors: LANCE, Cameo (Rhea Space Activity); USMAN, Shawn; ROSENZWEIG, Suzanne (University of Florida (US))

Presenter: ROSENZWEIG, Suzanne (University of Florida (US)) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 293 NuFact 2021: The … / Report of Contributions Simulation study of electron energ …

Contribution ID: 347 Type: Poster

Simulation study of electron energy resolution and reconstruction with thinner iron plates using plastic scintillators in ICAL

The proposed magnetized Iron Calorimeter (ICAL) detector to study atmospheric neutrinos and anti–neutrinos at the India based Neutrino Observatory (INO) is a 51 K ton detector which will have a magnetic field of 1.3 T. The default geometry of ICAL has 56 mm thick iron platesasthe interaction material (target), separated by 40 mm gaps in which the active detectors the resistive plate chamberes (RPCs) will be placed. This makes ICAL sensitive to muons with energy inthe range ∼0.5–25 GeV, produced in charged current (CC) interactions of atmospheric νµ and ν¯µ with iron. It was shown that sub–GeV νe and ν¯e charged current events are sensitive to the leptonic CP phase δ CP irrespective of the neutrino mass hierarchy. In our new study we explore the possibility of detecting sub–GeV νe and ν¯e in ICAL for different combinations of iron plate thickness, air gaps and different types of active detectors. Energy resolutions for electrons with energy < 1GeVwere obtained for cases with RPC and scintillator as active detectors with 18 mm thick iron and 40 mm thick air gap and compared with each other and also the resolutions for DUNE experiment. In this case, number of hits per layer can be used to reject pion background from electron events. Further studies with 18 mm thick iron plate and a decreased air gap of 12 mm (10 mm scintillator and 2 mm air gap) to improve the energy resolutions for low energy electrons and identification of more variables for background rejection are being performed.

Working group WG1

Primary authors: Ms KHINDRI, Honey (Homi Bhabha National Institute); Prof. D, Indumathi (The Institute of Mathematical Sciences); Dr S MOHAN, Lakshmi (National Centre for Nuclear Research (NCBJ)); Prof. MURTHY, M.V.N. (The Institute of Mathematical Sciences); DATAR, Vivek (Bhabha Atomic Research Centre (BARC))

Presenter: Ms KHINDRI, Honey (Homi Bhabha National Institute) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 294 NuFact 2021: The … / Report of Contributions Quantifying systematic uncertaint …

Contribution ID: 348 Type: Poster

Quantifying systematic uncertainties in GENIE FSI models

Neutrino-nucleus scattering becomes complex within the nuclear environment due to re-interactions of initially produced particles with other nucleons at the initial neutrino-nucleon interaction vertex. This leads to variable final state products and thus limit our understanding of fundamental neutrino-nucleus scattering. Neutrino-nuclei interactions and understanding neutrino physics from different neutrino event generators rely on the modeling of the nucleus and final stateinter- actions (FSI). It is critically important to have accurate nuclear and FSI models to achieve precision results. Different neutrino event generators use different models that depend upon different theoretical approximations. We present a comparative analysis of the two FSI models viz. hA and hN used in GENIE.

Working group WG2

Primary authors: Mr LALNUNTLUANGA, R (IIT Hyderabad, Hyderabad); NAGU, Srishti (Univer- sity of Lucknow, Lucknow)

Presenters: Mr LALNUNTLUANGA, R (IIT Hyderabad, Hyderabad); NAGU, Srishti (University of Lucknow, Lucknow) Session Classification: Poster session NB: do not use Safari; use Firefox, Chrome or Edge

September 30, 2021 Page 295 NuFact 2021: The … / Report of Contributions Lepton reconstruction in the ENU …

Contribution ID: 349 Type: not specified

Lepton reconstruction in the ENUBET tagger and detectors for the high precision cross section program Thursday, 9 September 2021 09:00 (25 minutes)

Working group

Presenter: PUPILLI, Fabio (Universita e INFN, Padova (IT)) Session Classification: Special session

September 30, 2021 Page 296 NuFact 2021: The … / Report of Contributions nuSTORM physics reach: cross se …

Contribution ID: 350 Type: not specified

nuSTORM physics reach: cross sections and exotics Thursday, 9 September 2021 09:25 (25 minutes)

Presenter: ALVAREZ-RUSO, Luis Session Classification: Special session

September 30, 2021 Page 297 NuFact 2021: The … / Report of Contributions Detector R&D for the ENUBET ins …

Contribution ID: 351 Type: not specified

Detector R&D for the ENUBET instrumented decay region Thursday, 9 September 2021 09:50 (25 minutes)

Presenter: IACOB, Fabio (Università di Padova) Session Classification: Special session

September 30, 2021 Page 298 NuFact 2021: The … / Report of Contributions Development and optimization of …

Contribution ID: 352 Type: not specified

Development and optimization of the ENUBET beamline Thursday, 9 September 2021 10:15 (25 minutes)

Working group

Presenter: PARI, Michelangelo (Universita e INFN, Padova (IT)) Session Classification: Special session

September 30, 2021 Page 299 NuFact 2021: The … / Report of Contributions Design of a common beam line for …

Contribution ID: 353 Type: not specified

Design of a common beam line for ENUBET/nuSTORM Thursday, 9 September 2021 10:40 (25 minutes)

Working group

Presenter: PASTERNAK, Jaroslaw (Imperial College, London) Session Classification: Special session

September 30, 2021 Page 300 NuFact 2021: The … / Report of Contributions Fluxes and systematics reduction …

Contribution ID: 354 Type: not specified

Fluxes and systematics reduction with decay monitoring Thursday, 9 September 2021 11:05 (25 minutes)

Presenters: BRANCA, Antonio (INFN); BRANCA, Antonio (INFN - National Institute for Nuclear Physics); BRANCA, Antonio (Universita e INFN (IT)) Session Classification: Special session

September 30, 2021 Page 301 NuFact 2021: The … / Report of Contributions Neutrino fluxes from nuSTORM

Contribution ID: 355 Type: not specified

Neutrino fluxes from nuSTORM Thursday, 9 September 2021 11:30 (25 minutes)

Presenter: KYBERD, Paul (Brunel University (GB)) Session Classification: Special session

September 30, 2021 Page 302 NuFact 2021: The … / Report of Contributions EFT at FASERnu: an experiment to …

Contribution ID: 356 Type: Oral

EFT at FASERnu: an experiment to probe them all

Working group

Presenter: TABRIZI, Zahra

September 30, 2021 Page 303 NuFact 2021: The … / Report of Contributions Scientific Committee Meeting: the…

Contribution ID: 357 Type: not specified

Scientific Committee Meeting: the zoom is the one of the plenary sessions. The meeting is restricted to SPC members and WG conveners. Friday, 10 September 2021 17:30 (1 hour)

Presenters: TERRANOVA, Francesco (Universita & INFN, Milano-Bicocca (IT)); BONIVENTO, Wal- ter Marcello (INFN Cagliari)

September 30, 2021 Page 304 NuFact 2021: The … / Report of Contributions Conference closing and farewell

Contribution ID: 358 Type: not specified

Conference closing and farewell Saturday, 11 September 2021 17:30 (20 minutes)

September 30, 2021 Page 305 NuFact 2021: The … / Report of Contributions FERS-5200 platform for large SiPM …

Contribution ID: 359 Type: not specified

FERS-5200 platform for large SiPM arrays readout: history, concepts and applications Wednesday, 8 September 2021 16:36 (18 minutes)

Working group

Presenter: VENTURINI, Yuri (CAEN SpA) Session Classification: WG6

September 30, 2021 Page 306 NuFact 2021: The … / Report of Contributions Official opening of the conference

Contribution ID: 360 Type: not specified

Official opening of the conference Monday, 6 September 2021 12:20 (5 minutes)

Presenters: TERRANOVA, Francesco (Universita & INFN, Milano-Bicocca (IT)); BONIVENTO, Wal- ter Marcello (INFN Cagliari) Session Classification: Formal Conference Opening an Welcome from Authorities: Ple- nary

September 30, 2021 Page 307 NuFact 2021: The … / Report of Contributions Welcome by the Mayor of Cagliari, …

Contribution ID: 361 Type: not specified

Welcome by the Mayor of Cagliari, Dott. Truzzu Monday, 6 September 2021 12:25 (5 minutes)

Session Classification: Formal Conference Opening an Welcome from Authorities: Ple- nary

September 30, 2021 Page 308 NuFact 2021: The … / Report of Contributions Welcome by the Director of INFN …

Contribution ID: 362 Type: not specified

Welcome by the Director of INFN Cagliari Division, Dott. Masoni Monday, 6 September 2021 12:30 (3 minutes)

Session Classification: Formal Conference Opening an Welcome from Authorities: Ple- nary

September 30, 2021 Page 309 NuFact 2021: The … / Report of Contributions Welcome by the pro-Rector of the …

Contribution ID: 363 Type: not specified

Welcome by the pro-Rector of the University of Cagliari, Prof. Colombo Monday, 6 September 2021 12:33 (3 minutes)

Session Classification: Formal Conference Opening an Welcome from Authorities: Ple- nary

September 30, 2021 Page 310 NuFact 2021: The … / Report of Contributions Welcome by the Director of the Ph …

Contribution ID: 364 Type: not specified

Welcome by the Director of the Physics Department of the University of Cagliari Prof. Usai Monday, 6 September 2021 12:36 (3 minutes)

Session Classification: Formal Conference Opening an Welcome from Authorities: Ple- nary

September 30, 2021 Page 311 NuFact 2021: The … / Report of Contributions Possible layouts at CERN

Contribution ID: 365 Type: not specified

Possible layouts at CERN Thursday, 9 September 2021 11:55 (15 minutes)

Presenter: FRANQUEIRA XIMENES, Rui (CERN) Session Classification: Special session

September 30, 2021 Page 312 NuFact 2021: The … / Report of Contributions Canonical Momentum Growth in …

Contribution ID: 366 Type: not specified

Canonical Momentum Growth in MICE ”Solenoid Mode” with muon ionisation cooling Thursday, 9 September 2021 15:30 (20 minutes)

Presenter: LONG, Kenneth Richard (Imperial College (GB)) Session Classification: WG 3

September 30, 2021 Page 313 NuFact 2021: The … / Report of Contributions round table

Contribution ID: 367 Type: not specified

round table Saturday, 11 September 2021 13:20 (50 minutes)

Presenters: DI LODOVICO, Francesca (University of London (GB)); PALEY, Jonathan (Fermi Na- tional Accelerator Lab. (US)); LONG, Kenneth Richard (Imperial College (GB)); BOLOGNESI, Sara (Uni- versité Paris-Saclay (FR)); SOLDNER-REMBOLD, Stefan (University of Manchester (GB)); KOBAYASHI, Takashi (KEK) Session Classification: Round table

September 30, 2021 Page 314