Report of Contributions

A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021

https://indico.uis.no/e/12 A Virtual Tribute … / Report of Contributions Medium evolution of a static …

Contribution ID: 2 Type: Parallel contribution

Medium evolution of a static quark-antiquark pair in the large Nc limit Tuesday, 3 August 2021 09:30 (15 minutes)

We study the transitions between the different color states of a static quark-antiquark pair, singlet and octet, in a thermal medium. This is done non-perturbatively exploiting the infinite mass limit of QCD. This study is interesting because it can be used for future developments within the framework of Effective Field Theories (EFTs) and because it can be combined with other techniques, like lattice QCD or AdS/CFT, to gain non-perturbative information about the evolution of quarkonium in a medium. We also study the obtained expressions in the large Nc limit. This allows us to learn lessons that are useful to simplify phenomenological models of quarkonium in a plasma.

Talk based on arXiv:2010.10424

Primary author: ESCOBEDO ESPINOSA, Miguel Ángel (Instituto Galego de Física de Altas Enerxías (IGFAE))

Presenter: ESCOBEDO ESPINOSA, Miguel Ángel (Instituto Galego de Física de Altas Enerxías (IG- FAE)) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 1 A Virtual Tribute … / Report of Contributions NNLO QCD corrections to B- …

Contribution ID: 3 Type: Parallel contribution

NNLO QCD corrections to B-meson mixing Monday, 2 August 2021 17:20 (20 minutes)

s The mixing parameter ∆Γ12 is an important flavor observable that governs the lifetime difference ∆Γs of the neutral Bs mesons. The state-of-the-art Standard Model prediction for ∆Γs is compatible with the HFLAV world average, yet the theoretical uncertainties due to uncalculated perturbative corrections are still large. In this talk I will report on our progress in reducing these uncertainties by calculating NNLO QCD corrections to the Bs − B¯s mixing process. To this end we perform a fully analytic evaluation of the current-current correlators P1,2 ⊗ P1,2 at 3-loops, as well as the current-penguin P1,2 ⊗ P3,4,5,6 and current-chromomagnetic P1,2 ⊗ P8 correlators at 2-loops in the Chetyrkin-Misiak-M\”unz (CMM) basis. Some interesting aspects of this calculation to be addressed in my talk involve higher-order matching between two effective field theories H∆B=1 H∆B=2 ( eff and eff ), dedicated treatment of evanescent operators in the presence of dimension- O 2 ally regulated IR divergences, asymptotic expansion of the amplitudes in mc/mb up to (mc ) and the analytic evaluation of the resulting 3-loop on-shell integrals with one mass scale.

Primary authors: GERLACH, Marvin (KIT (TTP)); NIERSTE, Ulrich (KIT); Dr SHTABOVENKO, Vladyslav (KIT); STEINHAUSER, Matthias (KIT) Presenter: Dr SHTABOVENKO, Vladyslav (KIT) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 2 A Virtual Tribute … / Report of Contributions Generalized ’t Hooft Anomalies

Contribution ID: 4 Type: Parallel contribution

Generalized ’t Hooft Anomalies Monday, 2 August 2021 17:00 (20 minutes)

‘t Hooft anomalies provide a unique handle to study the nonperturbative dynamics of strongly- coupled theories. Although this type of anomalies was known since the 80’s, recently it has been realized that one can generalize them by turning on ‘t Hooft twists in the color, flavor, and baryon number directions. Such generalized anomalies put severe constraints on the possible realizations of the global symmetries of a given theory in the infrared. In this talk, I will explain how one can construct such ‘t Hooft twists and give examples of the constrains the generalized anomalies can impose on strongly coupled gauge theories.

Primary author: ANBER, Mohamed Presenter: ANBER, Mohamed Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 3 A Virtual Tribute … / Report of Contributions On boundary corrections of …

Contribution ID: 5 Type: Parallel contribution

On boundary corrections of Lüscher-Weisz string. Thursday, 5 August 2021 09:00 (20 minutes)

The Casimir energy and profile of the QCD flux-tube are discussed within the framework of Lüscher-Weisz (LW) string action with two boundary terms. We perform our numerical simulations on the 4-dim pure SU(3) Yang-Mills lattice gauge theory at finite temperature. The static quark-antiquark (QQ¯) potential is calculated using link-integrated Polyakov loop correlators. In general, we detect signatures of the two boundary terms of the string action. Near the QCD Plateau, the L\”uscher-Weisz string is yielding a static potential which is in a good agreement with the lattice data for source separations R ≥ 0.3 fm. At higher temperature, near to the deconfinement point T /Tc = 0.9, the fits to the potential data improve compared to the pure Nambu-Goto string. Good match with the numerical data are retrieved at color source separation R > 0.6 fm; how- 2 ever, deviations from the string tension σ0a parameter persist. The mean-square width of the energy profile at T /Tc = 0.9 is well fitted to the width of the L\”uscher-Weisz string at leading or next-to-leading order over distance scales R ≥ 0.5 fm provided considering either two or one boundary term corrections for each order, respectively.

Primary author: Mr KHALIL, Mostafa ([email protected]) Co-authors: Dr BAKRY, Ahmed (Institute of Modern Physics, Chinese Academy of Sciences, Gansu 730000, China.); Dr DELIYERGIYEV, M; Prof. CHEN, X (Institute of Modern Physics, Chinese Academy of Sciences, Gansu 730000, China.); Dr GALAL, Ahmed (Department of Physics, Al Azhar University, Cairo 11651, Egypt.); Prof. KHALAF, Ali (Department of Physics, Al Azhar University, Cairo 11651, Egypt.); Prof. WILLIAMS, A (ARC Center for Excellence for Particle Physics, University of Adelaide, SA 5005, Australia.); Prof. ZHANG, P (Department of physics, Sun Zhongshan University, Gaungdong 510275, China.)

Presenter: Mr KHALIL, Mostafa ([email protected]) Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 4 A Virtual Tribute … / Report of Contributions Thermodynamics, quark and pion …

Contribution ID: 6 Type: Parallel contribution

Thermodynamics, quark and pion condensates in finite isospin chiral perturbation theory Friday, 6 August 2021 14:50 (20 minutes)

Chiral perturbation theory is a low-energy effective theory for QCD that gives model-independent prediction in its region of validity. In this talk, I will present recent progress in two and three-flavor chpt at finite isospin density. This is includes thermodynamic quantities, quark, and pion condensates, and phase diagrams, all calculated at next-to-leading order. The results are compared with recent high-precision lattice simulations and the agreement is generally very good.

Primary authors: Prof. ANDERSEN , Jens Oluf (NTNU); Ms ADHIKARI, Prabal (St. Olav’s Col- lege); Mr MOJAHED, Martin (NTNU) Presenter: Prof. ANDERSEN , Jens Oluf (NTNU) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 5 A Virtual Tribute … / Report of Contributions Third order corrections to the semi- …

Contribution ID: 7 Type: Parallel contribution

Third order corrections to the semi-leptonic b → c decay Monday, 2 August 2021 17:00 (20 minutes)

3 → In this talk we present our recent calculation of order αs corrections to the semi-leptonic b c decay. The calculation has been performed in an expansion around the heavy-daughter limit mc ∼ mb, but also shows decent convergence for mc = 0. For the semi-leptonic b → c decay we find large perturbative corrections in the on-shell scheme which can be significantly reduced by changing to the kinetic scheme for the heavy quark masses. These results will be important input for the inclusive determination of |Vcb| and the Fermi coupling constant GF in the future.

Primary authors: SCHOENWALD, Kay (KIT); Mr FAEL, Matteo (KIT); STEINHAUSER, Matthias (KIT)

Presenter: SCHOENWALD, Kay (KIT) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 6 A Virtual Tribute … / Report of Contributions Heavy-quark mesons in the diabat …

Contribution ID: 8 Type: Parallel contribution

Heavy-quark mesons in the diabatic approach: string breaking and the quarkoniumlike spectrum Monday, 2 August 2021 17:40 (20 minutes)

The Born-Oppenheimer approximation provides a description of heavy-quark mesons firmly based on lattice QCD, but its validity is limited to the lightest states lying far below the first open-flavour meson-meson threshold. This limitation can be overcome in the diabatic framework, a formalism first introduced in molecular physics, where the dynamics is encoded in a potential matrix whose elements can be derived from unquenched lattice QCD studies of string breaking. The nondiagonal elements of the potential matrix provide interaction between heavy quark-antiquark and meson- meson pairs, from which the mixing of quarkonium states with molecular components and the OZI-allowed strong decay widths are directly calculated. This allows for a QCD-based unified description of conventional quarkonium and unconventional mesons containing quark-antiquark and meson-meson components, what has proved to be successful for charmoniumlike [1, 2] and bottomoniumlike [3] resonances. [1] R. Bruschini and P. González, Diabatic description of charmoniumlike mesons, Phys. Rev. D 102, 074002 (2020). [2] R. Bruschini and P. González, Diabatic description of charmoniumlike mesons II: mass corrections and strong decay widths, Phys. Rev. D 103, 074009 (2021). [3] R. Bruschini and P. González, Diabatic description of bottomoniumlike mesons, arXiv:2105.04401 [hep-ph] (2021).

Primary author: BRUSCHINI, Roberto (Instituto de Física Corpuscular (Universidad de Valencia - CSIC))

Presenter: BRUSCHINI, Roberto (Instituto de Física Corpuscular (Universidad de Valencia - CSIC))

Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 7 A Virtual Tribute … / Report of Contributions Dispersive study of Kπ scattering …

Contribution ID: 9 Type: Parallel contribution

Dispersive study of Kπ scattering and determination ∗ of threshold parameters and of κ/K0 (700) resonance properties Thursday, 5 August 2021 10:50 (20 minutes)

We have recently completed the coupled dispersive analysis of πK pi pi -> K anti-K data. We show that just fitting data fails to satisfy the dispersive representation and leads toinconsis- tencies with threshold sum-rules as well as unreliable resonance parameterizations.

Our main result is a set of constrained fits to data that satisfy 16 dispersion relations of different kinds and allow for a reliable extraction of threshold and subtreshold parameters to be compared with Chiral Perturbation Theory and lattice QCD. In addition, we obtain a precise dispersive determination of the controversial light kappa-meson parameters, which has therefore become a “confirmed” state in the PDG, completing the light meson scalar nonet. The constrained fitsto data are easy to implement and ready for further theoretical and experimental studies.

Primary authors: PELAEZ SAGREDO, Jose R. (Universidad Complutense); Dr RODAS, Arkaitz (College of William and Mary)

Presenter: PELAEZ SAGREDO, Jose R. (Universidad Complutense) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 8 A Virtual Tribute … / Report of Contributions Inclusive Hadroproduction of P- …

Contribution ID: 10 Type: Parallel contribution

Inclusive Hadroproduction of P-wave Heavy Quarkonia in Potential NRQCD Friday, 6 August 2021 16:00 (20 minutes)

We compute the color singlet and color octet NRQCD long-distance matrix elements for inclusive production of P-wave quarkonia in the framework of pNRQCD. In this way, the color octet NRQCD long-distance matrix element can be determined without relying on measured cross section data, which has not been possible so far. We obtain inclusive cross sections of χcJ and χbJ at the LHC, which are in good agreement with data. In principle, the formalism developed in this work can be applied to all inclusive production processes of heavy quarkonia.

Primary authors: CHUNG, Hee Sok (Technical University of Munich); VAIRO, Antonio; BRAM- BILLA, Nora (Technical University Munich)

Presenter: CHUNG, Hee Sok (Technical University of Munich) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 9 A Virtual Tribute … / Report of Contributions Low-energy kaon-nucleon/nuclei i …

Contribution ID: 14 Type: Parallel contribution

Low-energy kaon-nucleon/nuclei interaction studies at the DAFNE Collider in Italy Tuesday, 3 August 2021 09:00 (20 minutes)

The low-energy QCD, the theory describing the strong interaction, is still missing fundamental experimental results in order to achieve a breakthrough in its understanding. Among these experimental results, the low-energy kaon-nucleon/nuclei interaction studies are playing a key-role, with important consequences going from particle and nuclear physics to astrophysics. Combining the excellent quality kaon beam delivered by the DANE collider in Frascati (Italy) with new experimental techniques, as fast and very precise X ray detectors, like the Silicon Drift Detectors, and with the high acceptance charged and neutral particles KLOE detector, we have performed unprecedented measurements in the low-energy strangeness sector in the framework of SIDDHARTA and AMADEUS Collaborations. The kaonic atoms, as kaonic hydrogen and kaonic deuterium, provide the isospin dependent kaon- nucleon scattering lengths from the measurement of X rays emitted in the de-excitation process to the fundamental 1s level of the initially excited formed atom. The most precise kaonic hydrogen measurement was performed by the SIDDHARTA collaboration, which realized, as well, the first exploratory measurement for kaonic deuterium ever. Presently, a major upgrade of the setup, SIDDHARTA-2 has been realized and installed on DAFNE to perform a precise measurement of kaonic deuterium and of other exotic atoms in the coming year(s). The status of the experiment will be presented, together with future plans to extend the studies of kaonic atoms by using advanced detector systems. The kaon–nuclei interactions are being measured by the AMADEUS collaboration for kaonmo- menta up to 100 MeV/c by using the KLOE detector implemented in the central region with a dedicated setup. Preliminary results for the interaction of negatively charged kaons with various type of nuclei will be shown, and future plans discussed. The experiments at the DANE collider represents an opportunity which is unique intheworld to, finally, unlock the secrets of the QCD in the strangeness sector and understand theroleof strangeness in the Universe, from nuclei to the stars.

Primary author: CURCEANU, Catalina (LNF-INFN) Presenter: CURCEANU, Catalina (LNF-INFN) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 10 A Virtual Tribute … / Report of Contributions A road to a beyond the SM model

Contribution ID: 15 Type: Parallel contribution

A road to a beyond the SM model Monday, 2 August 2021 17:50 (15 minutes)

We describe examples of renormalizable field theories where the breaking of chiral symmetry at the UV cutoff leaves behind at low energy dynamically generated elementary particle massesina way alternative to the Higgs mechanism. In this scenario 1) the scale of the elementary particle masses is set by the RGI scale of the theory 2) masses are kept “small” owing to an enhanced chiral symmetry enjoyed by the massless theory, thus solving the ‘t Hooft naturalness problem, 3) in order to match the experimental value of the top mass, a super-strongly interacting sector, gauge- invariantly coupled to standard matter, needs to exist with an RGI scale, ΛT ≫ ΛQCD, of the order of a few TeV’s, 4) the peculiar dependence of the non-perturbatively generated masses upon the gauge couplings is such that it may offer a hint to solve the mass hierarchy problem, 5) ΛT sets the order of magnitude of the electro-weak scale, 6) the 125 GeV resonance recently identified at LHC is interpreted as a W +W −/ZZ composite state bound by exchanges of super-strongly interacting 2 ≪ 2 particles to which the electro-weak bosons are coupled, 7) at (momenta) ΛT the couplings of the composite Higgs boson with quark, leptons and electro-weak bosons coincide with those of the Standard Model up to O(αW ) corrections, 8) with a reasonable choice of particle content, a theory extending the Standard Model with the inclusion of the new super-strong sector exhibits gauge coupling unification at a scale ∼ 1018~GeV making the proton life time comfortably larger then the present limit of 1.7 × 1034 years.

Primary authors: Prof. ROSSI, Giancarlo (University of Roma Tor Vergata); Prof. FREZZOTTI, Roberto (University of Roma Tor Vergata)

Presenter: Prof. ROSSI, Giancarlo (University of Roma Tor Vergata) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 11 A Virtual Tribute … / Report of Contributions sin(2\phi-\phi_s) azimuthal asymm …

Contribution ID: 16 Type: Parallel contribution

sin(2\phi-\phi_s) azimuthal asymmetry in the pion induced Drell-Yan process within TMD factorization Thursday, 5 August 2021 09:00 (20 minutes)

We investigate the single transverse-spin asymmetry with a sin(2ϕ − ϕS) modulation in the pion- induced Drell-Yan process within the theoretical framework of the transverse momentum dependent (TMD) factorization. The asymmetry is contributed by the convolution of the Boer-Mulders function and the transversity. We adopt the model results for the distributions of the pion meson and the available parametrization for the distributions of the proton to numerically estimate the − sin(2ϕ−ϕS) asymmetry in π p Drell-Yan at the kinematics of COMPASS at CERN. To implement the TMD evolution formalism of the distribution functions, we apply two different parametrizations on the nonperturbative Sudakov form factors associated with the distribution functions of the proton and the pion. It is found that our prediction on the single transverse-spin dependent asymmetry sin(2ϕ − ϕS) as functions of xp, xπ, xF and q⊥ is qualitatively consistent with the recent COMPASS measurement in both sign and magnitude.

Primary author: LI, Hui (Southeast University) Presenter: LI, Hui (Southeast University) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 12 A Virtual Tribute … / Report of Contributions Jet-based TMD measurements wit …

Contribution ID: 17 Type: Parallel contribution

Jet-based TMD measurements with H1 data

Recently, jet measurements in DIS events close to Born kinematics have been proposed as a new probe to study transverse-momentum-dependent (TMD) PDFs, TMD fragmentation functions, and TMD evolution. We report measurements of lepton-jet momentum imbalance and hadron-in-jet correlations in high-Q2 DIS events collected with the H1 detector at HERA. The jets are recon- structed with the kT algorithm in the laboratory frame. These are two examples of a new type of TMD studies in DIS, which will serve as pathfinder for the Electron-Ion Collider program.

Primary authors: SCHMITT, Stefan (DESY); H1, Collaboration (DESY); ARRATIA, Miguel (UC Riverside)

Presenter: ARRATIA, Miguel (UC Riverside) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 13 A Virtual Tribute … / Report of Contributions Measurement of charged particle …

Contribution ID: 18 Type: Parallel contribution

Measurement of charged particle multiplicity distributions in DIS at HERA and its implication to entanglement entropy of partons Thursday, 5 August 2021 09:25 (15 minutes)

Charged particle√ multiplicity distributions in positron-proton deep inelastic scattering at a centre- of-mass energy s = 319 GeV are measured. The data are collected with the H1 detector atHERA corresponding to an integrated luminosity of 136 pb−1. Charged particle multiplicities are measured as a function of photon virtuality Q2, inelasticity y and pseudorapidity η in the laboratory and the hadronic centre-of-mass frames. Predictions from different Monte Carlo models are compared to the data. The first and second moments of the multiplicity distributions are determined and the KNO scaling behaviour is investigated. The multiplicity distributions as a function of Q2 and the Bjorken variable xBj are converted to the hadron entropy Shadron, and predictions from a quantum entanglement model are tested.

Eur.Phys.J.C 81 (2021), 212

Primary authors: SCHMITT, Stefan (DESY); H1, Collaboration (DESY); BATY, Austin (Rice Uni- versity)

Presenter: BATY, Austin (Rice University) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 14 A Virtual Tribute … / Report of Contributions Higher-order QCD to hadronic tau …

Contribution ID: 20 Type: Parallel contribution

Higher-order QCD to hadronic tau and Higgs decays using Padé approximants Wednesday, 4 August 2021 17:00 (20 minutes)

The mathematical method of Padé approximants is put forward to reconstruct the Borel trans- formed series of the correlator triggering either the tau or the Higgs decay and extract higher- order corrections in a model-independent way. The use of the D-log Padé approximants provides valuable information to its analytic structure and yields, together with the standard Padé approximants, reliable model-independent predictions of the higher-order coefficients. Such reconstruction strongly favours the use of fixed-order perturbation theory (FOPT) for the renormalization- scale setting

Primary authors: MASJUAN, Pere; BOITO, Diogo; LONDON, Cristiane Yumi Mise; OLIANI, Fabio

Presenter: BOITO, Diogo Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 15 A Virtual Tribute … / Report of Contributions The strong CP problem solved by…

Contribution ID: 22 Type: Parallel contribution

The strong CP problem solved by itself Friday, 6 August 2021 15:00 (30 minutes)

The vacuum of quantum chromodynamics has an incredibly rich structure at the confinement scale, which is intimately connected with the topology of gauge fields, and put to a stringent test bythe strong CP problem. We investigate the long distance properties of the theory in the presence of a topological θ term. This is done on the lattice, using the gradient flow to isolate the longdistance modes in the functional integral measure and tracing it over successive length scales. We find that the color fields produced by quarks and gluons are screened for vacuum angles |θ| > 0, thus providing a natural solution of the strong CP problem.

Primary author: Prof. SCHIERHOLZ, Gerrit (DESY) Presenter: Prof. SCHIERHOLZ, Gerrit (DESY) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 16 A Virtual Tribute … / Report of Contributions Confinement from Interacting SU( …

Contribution ID: 24 Type: Parallel contribution

Confinement from Interacting SU(3) Instanton-dyons Friday, 6 August 2021 16:00 (20 minutes)

Confinement remains one the most interesting and challenging nonperturbative phenomenon in non-Abelian gauge theories. Recent semiclassical (for SU(2)) and lattice (for QCD) studies have suggested that confinement arises from interactions of statistical ensembles of instanton-dyons with the Polyakov loop. In this talk, I will present recent work which has extended the study of semiclassical ensemble of dyons to the SU(3) Yang-Mills theory. It will be shown that such interactions do generate the expected first-order deconfinement phase transition. The properties of the ensemble, including the dyon correlations and densities, and the topological susceptibility, are studied over a range of temperatures above and below Tc . Additionally, the dyon ensemble is studied in the Yang-Mills theory containing an extra trace-deformation term. It will be shown that such a term causes the theory to remain confined even at high temperatures.

Primary author: DEMARTINI, Dallas (Stony Brook University) Co-author: Prof. SHURYAK, Edward (Stony Brook University) Presenter: DEMARTINI, Dallas (Stony Brook University) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 17 A Virtual Tribute … / Report of Contributions Inhomogeneous confining- …

Contribution ID: 26 Type: Parallel contribution

Inhomogeneous confining-deconfining phases in rotating plasma Thursday, 5 August 2021 09:00 (30 minutes)

We discuss the effects of rotation on confining properties of gauge theories focusing on compact electrodynamics in two spatial dimensions as an analytically tractable model. We show that the rotation leads to a deconfining transition at finite temperature starting from a certain distance from the rotation axis. We argue that the uniformly rotating confining system possesses, in addition to the usual confinement and deconfinement phases, a mixed inhomogeneous phase that hosts spatially separated confinement and deconfinement regions. Implications of our results forthe phase diagram of QCD are presented.

Primary author: Dr CHERNODUB, Maxim (Institut Denis Poisson, Tours, France) Presenter: Dr CHERNODUB, Maxim (Institut Denis Poisson, Tours, France) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 18 A Virtual Tribute … / Report of Contributions Nonperturbative phenomena in jet …

Contribution ID: 27 Type: Parallel contribution

Nonperturbative phenomena in jet modification Thursday, 5 August 2021 10:40 (15 minutes)

The interaction of a jet with the medium created in heavy-ion collisions is not yet fully understood from a QCD-perspective. This is mainly due to the nonperturbative nature of this interaction which affects both, transverse jet momentum broadening and jet quenching. We review how lattice simulations of Electrostatic QCD can be properly extrapolated to the continuum, which operators to measure and extract from the data, and how to promote these operators to full, fourdimensional QCD. Finally, we show how these results translate to phenomenological calculations.

Primary author: SCHLUSSER, Niels Co-authors: MOORE, Guy (TU Darmstadt); SOUDI, Ismail; SCHLICHTING, Sören Presenter: SOUDI, Ismail Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 19 A Virtual Tribute … / Report of Contributions Neutron star properties from a con …

Contribution ID: 30 Type: Parallel contribution

Neutron star properties from a constrained EoS Thursday, 5 August 2021 10:50 (20 minutes)

Taking into account experimental data, theoretical calculations and neutron star observations to constrain the equation of state several properties of neutron stars will be discussed, in particular: possible properties of hybrid stars, the influence of hyperonic degrees of freedom on the cooling of neutron stars, the presence of light clusters in the warm equation of state and the effect of the magnetic field on the crust core transition.

Primary author: PROVIDENCIA, Constança (Universidade de Coimbra) Presenter: PROVIDENCIA, Constança (Universidade de Coimbra) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 20 A Virtual Tribute … / Report of Contributions Charting the scaling region of the …

Contribution ID: 31 Type: Parallel contribution

Charting the scaling region of the Ising universality class in finite temperature QCD Friday, 6 August 2021 15:00 (15 minutes)

We discuss the behaviour of a universal combination of susceptibility and correlation length in the Ising model in two and three dimensions, in presence of both magnetic and thermal perturbations, in the neighbourhood of the critical point. In three dimensions we address the problem using a parametric representation of the equation of state. In two dimensions we make use of the exact integrability of the model along the thermal and the magnetic axes. Our results can be used as a sort of “reference frame” to chart the critical region of the model. While our results can be applied in principle to any possible realization of the Ising universality class, we address in particular, as specific examples, instances of Ising behaviour in finite temperature QCD related in various ways to the deconfinement transition. Most notably, we study the critical ending point in the finite density, finite temperature phase diagram of QCD. Inthis finite density framework, due to well know sign problem, Montecarlo simulations are not possible and thus a direct comparison of experimental results with QFT/Statmech predictions like the one we discuss may be important. Moreover in this example it is particularly difficult to disentangle “magnetic-like” from “thermal-like” observables and thus an explicit charting of the neighbourhood of the critical point can be particularly useful.

Primary authors: SORBA, Marianna (SISSA); CASELLE, Michele (Dep. of Physics, Torino Univer- sity)

Presenter: SORBA, Marianna (SISSA) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 21 A Virtual Tribute … / Report of Contributions Quarkonia and heavy quark diffus …

Contribution ID: 32 Type: Parallel contribution

Quarkonia and heavy quark diffusion in thehot gluonic medium Friday, 6 August 2021 16:10 (15 minutes)

We will discuss thermal modifications of charmonium and bottomonium spectral properties ina hot gluonic medium from continuum extrapolated lattice results. The dissociation temperatures of quarkonia as well as charm and bottom quark diffusion coefficients are presented in thetem- perature region from 1.1Tc to 2.25Tc in the quenched approximation with valence quarks tuned to physical J/ψ and Υ masses. The results are obtained by incorporating theoretically and perturbatively inspired models for the spectral functions compared to continuum extrapolated correlation functions measured on the lattice.

Primary authors: Ms LORENZ, Anna-Lena (Bielefeld University); SHU, Hai-Tao (Bielefeld Uni- versity); Dr SANDMEYER, Hauke; Prof. DING, Heng-Tong (CCNU); Dr OHNO, Hiroshi (Tsukuba University); KACZMAREK, Olaf (Bielefeld University); LARSEN, Rasmus; MUKHERJEE, Swagato (Brookhaven National Laboratory)

Presenter: SHU, Hai-Tao (Bielefeld University) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 22 A Virtual Tribute … / Report of Contributions Instanton-induced effects in light- …

Contribution ID: 33 Type: Parallel contribution

Instanton-induced effects in light-front wave functions and formfactors Monday, 2 August 2021 17:30 (30 minutes)

Exclusive processes are traditionally described by perturbative hard blocks and “distribution amplitudes” (DAs), matrix elements of operators of various chiral structure and twist. One paper (with I.Zahed) calculate instanton contribution to hard blocks, which is found comparable to perturbative one in few-GeV 2 Q2 region of interest. Another paper aims at comprehensive wave functions of mesons, baryons and pentaquarks. The last ones are also included as 5-quark component of the baryons. The calculation, using ‘t Hooft operator, gives x-dependence and magnitude of the antiquark PDF. It explains long standing issue of strong flavor asymmetry of antiquark sea. The third paper (also with I.Zahed)is semi-review on the instanton-sphaleron processes in QCD and electroweak theories, with emphasis on their possible experimental observation via double diffractive events at LHC and RHIC.

Primary author: Prof. SHURYAK, Edward (Stony Brook University) Presenter: Prof. SHURYAK, Edward (Stony Brook University) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 23 A Virtual Tribute … / Report of Contributions Hadron Cosmological Constant an …

Contribution ID: 35 Type: Parallel contribution

Hadron Cosmological Constant and Origin of Proton Mass Monday, 2 August 2021 17:00 (20 minutes)

I will discuss the origin of the proton mass from the Hamiltonian and gravitational form factor formulations. After examining the mass decomposition in the stress-energy-momentum tensor, it is found that the glue part of the trace anomaly can be identified as the vacuum energy from the glue condensate and gives a CONSTANT restoring pressure which balances that from the trace- less part of the Hamiltonian to confine the hadron, much like the cosmological constant Einstein introduced for a static universe. From a lattice calculation of this anomaly in the charmonium, we deduce the associated string tension which turns out to be in good agreement with that from a Cornell potential which fits the charmonium spectrum.

Primary author: LIU, Keh-Fei (University of Kentucky) Presenter: LIU, Keh-Fei (University of Kentucky) Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 24 A Virtual Tribute … / Report of Contributions Coupling TQFT to YM, Lefschetz …

Contribution ID: 36 Type: Parallel contribution

Coupling TQFT to YM, Lefschetz thimble/resurgence decomposition Wednesday, 4 August 2021 17:00 (30 minutes)

I discuss the relation between coupling a TQFT to Yang-Mills theory, resurgence and Lefschetz thimble decomposition. To classify the non-perturbative effects in original SU(N) theory, one must use PSU(N) bundle and lift configurations (critical points at infinity) for which thereisno obstruction back to SU(N). These provide a refinement of instanton sums: integer topological charge, but crucially fractional action configurations contribute.

Primary author: UNSAL, Mithat (NCSU) Presenter: UNSAL, Mithat (NCSU) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 25 A Virtual Tribute … / Report of Contributions Inferring the dense nuclear matter …

Contribution ID: 37 Type: Parallel contribution

Inferring the dense nuclear matter equation of state with neutron star tides Tuesday, 3 August 2021 09:40 (20 minutes)

During the late stages of a neutron star binary inspiral finite-size effects come into play, with the tidal deformability of the supranuclear density matter leaving an imprint on the gravitational- wave signal. As demonstrated in the case of GW170817—the first direct detection of gravitational waves from a neutron star binary—this can lead to strong constraints on the neutron star equation of state. As detectors become more sensitive, effects which may have a smaller influence onthe neutron star tidal deformability need to be taken into consideration. Dynamical effects, such as oscillation mode resonances triggered by the orbital motion, have been shown to contribute to the tidal deformability, especially close to the neutron star coalesence, where current detectors are most sensitive. We calculate the contribution of the various stellar oscillation modes to the tidal deformability and demonstrate the (anticipated) dominance of the fundamental mode. We show what the impact of the matter composition is on the tidal deformability, as well as the changes induced by more realistic additions to the problem, e.g. the presence of an elastic crust. Finally, based on this formulation, we develop a simple phenomenological model describing the effective tidal deformability of neutron stars and show that it provides a surprisingly accurate representation of the dynamical tide close to merger.

Primary author: PNIGOURAS, Pantelis (Sapienza University of Rome) Co-authors: ANDERSSON, Nils (University of Southampton); PASSAMONTI, Andrea Presenter: PNIGOURAS, Pantelis (Sapienza University of Rome) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 26 A Virtual Tribute … / Report of Contributions Monopoles of the Dirac type and c …

Contribution ID: 38 Type: Invited plenary presentation

Monopoles of the Dirac type and color confinement in QCD Tuesday, 3 August 2021 09:00 (30 minutes)

When non-Abelian gauge fields in SU(3) QCD have a line-singularity leading to non-commutability with respect to successive partial-derivative operations, the non-Abelian Bianchi identity is violated. The violation as an operator is shown to be equivalent to violation of the Abelian-like Bianchi identities. Then there appear eight Abelian-like conserved magnetic monopoles of the Diractype in SU(3) QCD. Using lattice Monte-Carlo simulations, perfect Abelian and monopole dominances are shown to exist without introducing additional smoothing techniques like partial gauge fixings when we define lattice Abelian-like monopoles following the DeGrand-Toussaint method adopted in the study of the Dirac monopole in lattice compact QED. The Abelian dual Meissner effect around a pair of static quark and antiquark is caused by the solenoidal Abelian monopole current. Preliminary results suggest that the vacuum type of the SU(3) confinement phase is of Type-1.

Primary authors: SUZUKI, Tsuneo (Research Center for Nuclear Physics, Osaka University); HI- RAGUCHI, Atsuki; Dr ISHIGURO, Katsuya (Library and Information Technology, Kochi University)

Presenter: SUZUKI, Tsuneo (Research Center for Nuclear Physics, Osaka University) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 27 A Virtual Tribute … / Report of Contributions Two Schrodinger-like Equations fo …

Contribution ID: 39 Type: Parallel contribution

Two Schrodinger-like Equations for hadrons Monday, 2 August 2021 17:20 (20 minutes)

In the past years, the light-front holographic Schrodinger Equation, of Brodsky and de Teramond, has played a role in hadronic physics analogous to that of the ordinary Schrodinger Equation in atomic physics. Its confining potential, uniquely fixed by the underlying conformal symmetry and a holographic mapping to anti-de Sitter spacetime, contains a universal emerging mass scale that governs confinement in the transverse plane and generate the hadron masses in the absenceof quark masses. In this talk, I will show that non-zero quark masses and longitudinal confinement are correctly taken into account by the t Hooft Equation. Thet Hooft Equation is both consistent with, and complementary to, the holographic Schrodinger Equation. Together, this pair of equations governs hadronic spectroscopy just like the ordinary Schrodinger Equation governs atomic spectroscopy.

Primary author: Prof. SANDAPEN, Ruben (Acadia University) Presenter: Prof. SANDAPEN, Ruben (Acadia University) Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 28 A Virtual Tribute … / Report of Contributions Heavy quark momentum diffusion …

Contribution ID: 40 Type: Parallel contribution

Heavy quark momentum diffusion from the lattice using gradient flow Wednesday, 4 August 2021 17:40 (20 minutes)

Heavy quark transport coefficients calculated from first-principles QCD are a crucial inputfor transport models. Utilizing the heavy quark limit, we will discuss the results of a novel approach to nonperturbatively estimate the heavy quark diffusion coefficient in a hot gluonic medium from gradient-flowed color-electric correlators on the lattice. Unlike others, this approach canbeex- tended to a medium with dynamical fermions. The correlation functions are computed on fine

isotropic lattices at 1.5 Tc and are extrapolated to yield continuum data at zero flow time that is fully renormalized. Through theoretically well-established model fits we estimate the corresponding spectral function and in turn the diffusion coefficient, which is consistent with previous studies.

Primary author: ALTENKORT, Luis (Bielefeld University) Co-authors: SHU, Hai-Tao (Bielefeld University); KACZMAREK, Olaf (Bielefeld University); MOORE, Guy (TU Darmstadt); Dr ELLER, Alexander Max (TU Darmstadt); Mr MAZUR, Lukas (Bielefeld Uni- versity)

Presenter: ALTENKORT, Luis (Bielefeld University) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 29 A Virtual Tribute … / Report of Contributions Stable excitations of static fermion …

Contribution ID: 41 Type: Parallel contribution

Stable excitations of static fermions in gauge Higgs theories Monday, 2 August 2021 17:00 (30 minutes)

It is well known that a static quark-antiquark pair has a spectrum of flux-tube excitations in a pure gauge theory. In this talk I will show numerically that, in a variety of gauge Higgs theories in the non-confining Higgs phase, there is also a spectrum of excitations of the gauge and Higgsfields surrounding a static fermion-antifermion pair. These are localized and stable excitations which can exist at large fermion-antifermion separations, and which cannot decay into the ground state plus one or more vector or Higgs bosons.

Primary author: GREENSITE, Jeff (San Francisco State University) Co-author: Dr MATSUYAMA, Kazue (San Francisco State University) Presenter: GREENSITE, Jeff (San Francisco State University) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 30 A Virtual Tribute … / Report of Contributions Non-invertible symmetry and stri …

Contribution ID: 42 Type: Parallel contribution

Non-invertible symmetry and string tensions beyond N-ality Thursday, 5 August 2021 10:10 (20 minutes)

String tension is one of the characteristic quantity in confining gauge theories. In SU(N) gauge theories, there is a center symmetry, or ZN 1-form symmetry, which acts on the test quarks, and this is the symmetry which controls the spectral properties of confining strings in the infrared regime. This is sometimes called asan N-ality rule. In this talk, I will talk about some models of confining gauge theories, where the N-ality ruleis violated. That is, the center symmetry is again given by Z_N as in the case of SU(N) theory, while the confining strings of Wilson loops carry detailed information on their representations beyond N-ality. Then, I will uncover that those models enjoy the non-invertible symmetry, and theycan naturally explain why the N-ality rule can be violated. I would also like to talk about speculation on possible applicability to non-Abelian gauge theories in higher dimensions. This talk is based on the works, https://arxiv.org/abs/2101.02227 and https://arxiv.org/abs/2104.01824, in collaboration with Mendel Nguyen and Mithat Unsal.

Primary author: TANIZAKI, Yuya (YITP, Kyoto) Presenter: TANIZAKI, Yuya (YITP, Kyoto) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 31 A Virtual Tribute … / Report of Contributions Confinement in Coulomb gauge a…

Contribution ID: 43 Type: Parallel contribution

Confinement in Coulomb gauge and the dispersion relation of Wilson fermions. Thursday, 5 August 2021 10:50 (20 minutes)

When investigating confinement in the Coulomb gauge on the lattice, one encounters somediffi- culties in devising a suitable definition of the dispersion relations for Wilson fermions. In thistalk we will discuss a solution to this problems based on a redefinition of the lattice physical momentum of the fermion.

Primary authors: Dr BURGIO, Giuseppe (Institut für Theoretische Physik); Dr VOGT, Hannes (Institut für Theoretische Physik)

Presenter: Dr BURGIO, Giuseppe (Institut für Theoretische Physik) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 32 A Virtual Tribute … / Report of Contributions Determination of α(Mz) from a hy …

Contribution ID: 45 Type: Parallel contribution

Determination of α(Mz) from a hyperasymptotic approximation to the energy of a static quark-antiquark pair Tuesday, 3 August 2021 09:20 (20 minutes)

We give the hyperasymptotic expansion of the energy of a static quark-antiquark pair with a precision that includes the effects of the subleading renormalon. The terminants associated tothe first and second renormalon are incorporated in the analysis when necessary. In particular, we determine the normalization of the leading renormalon of the force and, consequently, of the sub- F V leading renormalon of the static potential. We obtain Z3 (nf = 3) = 2Z3 (nf = 3) = 0.37(17). The precision we reach in strict perturbation theory is next-to-next-to-next-to-leading logarithmic resummed order both for the static potential and for the force. We find that the resummation of large logarithms and the inclusion of the leading terminants associated to the renormalons are

compulsory to get accurate determinations of ΛMS when fitting to short-distance lattice data of (n =3) the static energy. We obtain Λ f = 338(12) MeV and α(M ) = 0.1181(9). We have also MS z found strong consistency checks that the ultrasoft correction to the static energy can be computed at weak coupling in the energy range we have studied.

Primary authors: Dr AYALA, Cesar; Prof. PINEDA, Antonio; Mr LOBREGAT, Xabier Presenter: Mr LOBREGAT, Xabier Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 33 A Virtual Tribute … / Report of Contributions Quark free energies and electric fl…

Contribution ID: 46 Type: Parallel contribution

Quark free energies and electric fluxes Tuesday, 3 August 2021 09:30 (30 minutes)

We study the free energies of individual quarks in a finite volume with suitable boundary conditions to account for their Z3-valued electric flux. In order to demonstrate how ‘t Hooft’s electric fluxes can be used to account for Gauss’ law, we first usea Z3-Potts model as an effective Polyakov-loop theory for the heavy-dense limit of QCD at strong coupling, with interfaces to re- alize ‘t Hooft’s twisted boundary conditions in temporal planes. The corresponding electric-flux ensembles, as discrete Fourier transforms of the temporally twisted ones, together with the static quark determinant of heavy-dense QCD are then equivalent to a modified flux-tube model. We use this equivalence to demonstrate how electric fluxes can be employed to prepare ensembles with quark numbers Nq ≠ 0 mod 3 in a finite volume which is impossible with periodic boundary conditions because of the Roberge-Weiss symmetry that the effective theory shares with QCD. Moreover, using dualisation techniques for the fermion determinant, we show how this construction can be generalised to full QCD with dynamical Wilson fermions. A more rigorous formulation based on the transfer-matrix approach reveals further subtleties and leaves us with a puzzle.

Primary authors: VON SMEKAL, Lorenz (Justus-Liebig University Giessen); Mr GHANBARPOUR, Milad (Justus-Liebig University)

Presenter: VON SMEKAL, Lorenz (Justus-Liebig University Giessen) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 34 A Virtual Tribute … / Report of Contributions Quantum computing with chiral fe…

Contribution ID: 47 Type: Parallel contribution

Quantum computing with chiral fermions* Wednesday, 4 August 2021 17:20 (20 minutes)

We proposed to utilize chiral anomaly [Ref. 1] for the designs of qubits potentially capable of operating at THz frequency and at room temperature. The proposed chiral qubit [Ref. 2]isa microscopic-scale ring made of a chiral semimetal, with the |0⟩ and |1⟩ states corresponding to the symmetric and antisymmetric superpositions of chiral currents circulating along the ring clockwise and counter-clockwise. In this talk, we report on the concept of our proposed chiral qubits and our investigations into several topological control principles driven by quantum coherence and understanding the time dependence of topological phase transition [Refs. 3-5]. These investigations included an experimental demonstration of a unique phonon-assisted topological switching in chiral semimetals [Ref. 3], and a discovery of a giant dissipationless topological photocurrent that carries the imprints of chiral fermions under zero magnetic field [Ref. 4]. The experimental results are compared with the dynamic phonon driving topological phases given theoretically by employing first-principles and effective Hamiltonian methods [Ref. 5]. *In collaboration with Prof. Dmitri Kharzeev of Stony Brook University

References: [1] Q. Li et al “Chiral magnetic effect in ZrTe5” Nature Physics 12 (6), 550-554 (2016) [2] D. Kharzeev and Q. Li “Quantum computing using chiral qubits” US Patent #10,657,456 (2020); “The Chiral Qubit: quantum computing with chiral anomaly” arXiv:1903.07133 [3] C Vaswani, et al “Light-driven Raman coherence as a nonthermal route to ultrafast topology switching in a Dirac semimetal” Physical Review X 10 (2), 021013 (2020) [4] L. Luo et al “A light-induced phononic symmetry switch and giant dissipationless topological photocurrent in ZrTe5” Nature Materials 20 (3), 329-334 (2021) [5] N. Aryal et al “Topological Phase Transition and Phonon-Space Dirac Topology Surfaces in ZrTe5” Physical Review Letters 126 (1), 016401(2021)

Primary author: Prof. LI, Qiang (Stony Brook University/Brookhaven National Laboratory) Presenter: Prof. LI, Qiang (Stony Brook University/Brookhaven National Laboratory) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 35 A Virtual Tribute … / Report of Contributions Glueballs from functional equations

Contribution ID: 48 Type: Parallel contribution

Glueballs from functional equations Friday, 6 August 2021 15:40 (20 minutes)

Results for the ground states and excited states of glueballs in Yang-Mills theory with J ±+, J=0,1,2,3,4, from Bethe-Salpeter equations are presented. The input comes from parameter-free Dyson-Schwinger calculations of the propagators and vertices. We compare with the corresponding lattice results and add some excited states to the known spectrum.

Primary authors: HUBER, Markus (Giessen University); Prof. FISCHER, Christian (University of Giessen); SANCHIS ALEPUZ, Helios (University of Graz) Presenter: HUBER, Markus (Giessen University) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 36 A Virtual Tribute … / Report of Contributions Static force with and without grad …

Contribution ID: 49 Type: Parallel contribution

Static force with and without gradient flow Wednesday, 4 August 2021 17:00 (20 minutes)

Recently a method of measuring static force from the lattice using an insertion of chromoelectric field to an Wilson loop has been proposed to tackle the ambiguities of taking derivative ofthe static potential. We present the current status of testing the viability of this approach and also expand the calculation for the first time to use gradient flow, which solves the problems withthe renormalization of chromoelectric field on the lattice.

Primary author: LEINO, Viljami (TU Munich) Co-authors: BRAMBILLA, Nora (Technical University Munich); VAIRO, Antonio; WAGNER, Marc (Goethe University Frankfurt); Prof. PHILIPSEN, Owe (Goethe-University Frankfurt); Mr REISINGER, Christian (Goethe-University Frankfurt); Mr MAYER-STEUDTE, Julian (Technical University Munich (TUM))

Presenter: LEINO, Viljami (TU Munich) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 37 A Virtual Tribute … / Report of Contributions Chiral entanglement and its measu …

Contribution ID: 50 Type: Parallel contribution

Chiral entanglement and its measurement in electric quenches Wednesday, 4 August 2021 17:40 (20 minutes)

In quantum electrodynamics with charged chiral fermions, a background electric field is the source of the chiral anomaly that can manifest itself through the creation of a chirally imbalanced state of fermions. This chiral state is realized through the production of entangled pairs of right-moving fermions and left-moving antifermions (or viceversa, depending on the orientation of the electric field). In this talk, I will show that, at least without backreaction, the thermodynamical Gibbs entropy associated with these pairs is equal to the entropy of entanglement between the right-moving particles and left-moving antiparticles. I will also derive an asymptotic expansion for the entanglement entropy in terms of the cumulants of the multiplicity distribution of produced particles (”full counting statistics”), and explain how to re-sum this asymptotic expansion. I will conclude by presenting a worked out example and study the time dependence of the entanglement entropy in a specific time-dependent pulsed background electric field, the so-called “Sauter pulse”, illustrate how our re-summation method works in this specific case and find that short pulses (such as the ones created by high energy collisions) result in an approximately thermal distribution for the produced particles.

Primary authors: Dr FLORIO, Adrien (Stony Brook); Prof. KHARZEEV, Dmitri (Stony Brook)

Presenter: Dr FLORIO, Adrien (Stony Brook) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 38 A Virtual Tribute … / Report of Contributions Transport near the chiral critical p …

Contribution ID: 51 Type: Parallel contribution

Transport near the chiral critical point Monday, 2 August 2021 17:45 (15 minutes)

The evolution of a heavy ion collision passes close to the O(4) critical point of QCD, wherefluc- tuations of the order parameter are expected to be enhanced. Using the appropriate stochastic hydrodynamic equations in mean field close to the near the pseudo-critical point, we compute how these enhanced fluctuations modify the transport coefficients of QCD and make a phenomenological estimate for how chiral fluctuations couldeffect the momentum spectrum of soft pions. Finally, we estimate the expected critical enhancement of soft pion yields, which provides a plausible explanation for the excess seen in experiment relative to ordinary hydrodynamic computations. Based on: arXiv:2005.02885 and 2101.10847

Primary authors: SOLOVIEV, Alexander (Stony Brook University); TEANEY, Derek (Stony Brook University); Mr GROSSI, Eduardo (Stony Brook University); YAN, Fanglida (Stony Brook Univer- sity)

Presenters: SOLOVIEV, Alexander (Stony Brook University); TEANEY, Derek (Stony Brook Univer- sity); Mr GROSSI, Eduardo (Stony Brook University); YAN, Fanglida (Stony Brook University) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 39 A Virtual Tribute … / Report of Contributions The dipole picture and the non- …

Contribution ID: 53 Type: Parallel contribution

The dipole picture and the non-relativistic expansion Tuesday, 3 August 2021 09:00 (20 minutes)

We study exclusive quarkonium production in the dipole picture at next-to-leading order (NLO) accuracy, using the non-relativistic expansion for the quarkonium wavefunction. This process offers one of the best ways to obtain information about gluon distributions at small x, in ultraperipheral heavy ion collisions and in deep inelastic scattering. The quarkonium light cone wave functions needed in the dipole picture have typically been available only at tree level, either in phenomenological models or in the nonrelativistic limit. In this paper, we discuss the compatibility of the dipole approach and the non-relativistic expansion and compute NLO relativistic corrections to the quarkonium light-cone wave function in light-cone gauge. Using these corrections we recover results for the NLO decay width of quarkonium to e+e− and we check that the non-relativistic expansion is consistent with ERBL evolution and with B-JIMWLK evolution of the target. The results presented here will allow computing the exclusive quarkonium production rate at NLO once the one loop photon wave function with massive quarks, currently under investigation, is known. This talk is based on Phys.Rev.D 101 (2020) 3, 034030.

Primary author: ESCOBEDO ESPINOSA, Miguel Ángel (Instituto Galego de Física de Altas Enerxías (IGFAE))

Co-author: Prof. LAPPI, Tuomas (University of Jyväskylä) Presenters: ESCOBEDO ESPINOSA, Miguel Ángel (Instituto Galego de Física de Altas Enerxías (IG- FAE)); Dr ESCOBEDO ESPINOSA, Miguel Ángel (Instituto Galego de Física de Altas Enerxías) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 40 A Virtual Tribute … / Report of Contributions Bottomonium suppression in an o …

Contribution ID: 54 Type: Parallel contribution

Bottomonium suppression in an open quantumsystem using the quantum trajectories method Friday, 6 August 2021 15:20 (15 minutes)

We solve the Lindblad equation describing the Brownian motion of a Coulombic heavy quark- antiquark pair in a strongly coupled quark-gluon plasma using the highly efficient Monte Carlo wave-function method. The Lindblad equation has been derived in the framework of pNRQCD and fully accounts for the quantum and non-Abelian nature of the system. The hydrodynamics of the plasma is realistically implemented through a 3+1D dissipative hydrodynamics code. We compute the bottomonium nuclear modification factor and compare with the most recent LHC data.The computation does not rely on any free parameter, as it depends on two transport coefficients that have been evaluated independently in lattice QCD. Our final results, which include late-time feed down of excited states, agree well with the available data from LHC 5.02 TeV PbPb collisions.

Primary authors: VANDER GRIEND, Peter (Technical University of Munich); VAIRO, Anto- nio; STRICKLAND, Michael (Kent State University); WEBER, Johannes Heinrich (Michigan State Uni- versity); Dr ESCOBEDO ESPINOSA, Miguel Ángel (Instituto Galego de Física de Altas Enerxías); BRAM- BILLA, Nora (Technical University Munich)

Presenter: VANDER GRIEND, Peter (Technical University of Munich) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 41 A Virtual Tribute … / Report of Contributions NRQCD vs. LHC quarkonium pro …

Contribution ID: 55 Type: Parallel contribution

NRQCD vs. LHC quarkonium production: signs of a deeper J/psi polarization puzzle? Friday, 6 August 2021 15:40 (20 minutes)

A purely data-driven fit of J/psi, psi(2S) and chi_c1,2 measurements reported by ATLAS andCMS, including the recently measured chi_c decay distributions, constrains the polarization of the directly produced J/psi mesons to a remarkably small and pT-independent value: lambda_theta = 0.04 +- 0.06. If this observation of seemingly unpolarized quarkonium production is confirmed by more precise polarization measurements, we may be be seeing a significant violation of the non- relativistic QCD (NRQCD) velocity scaling rules, which determine the magnitudes of the colour octet contributions. Can the NRQCD factorization expansion be made compatible with such an observation? Whatever the answer, high-precision polarization measurements will improve our fundamental understanding of quarkonium production.

Primary authors: FACCIOLI, Pietro (LIP Lisbon); LOURENÇO, Carlos (CERN) Presenter: FACCIOLI, Pietro (LIP Lisbon) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 42 A Virtual Tribute … / Report of Contributions Warm dense QCD matter in strong …

Contribution ID: 56 Type: Parallel contribution

Warm dense QCD matter in strong magnetic fields Friday, 6 August 2021 15:40 (20 minutes)

Strong magnetic fields are relevant for both systems where QCD matter can be studied in practice- heavy ion collisions and neutron stars. The ground state of QCD at zero temperature, in sufficiently strong magnetic fields and at moderate baryon densities was recently shown to carry a crystalline condensate of neutral pions: the chiral soliton lattice. This phase of matter might be relevant for magnetars; however, in order to assess its relevance for heavy ion collisions, finite temperature has to be taken into account. In this talk, I will describe the effects of quantum fluctuations and finite temperature recently calculated within chiral perturbation theory. The obtained results on the QCD phase diagram for varying temperature, baryon chemical potential and magnetic field will be presented.

Primary author: KOLESOVA, Helena (University of Stavanger) Presenter: KOLESOVA, Helena (University of Stavanger) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 43 A Virtual Tribute … / Report of Contributions Preserving gauge invariance in ne …

Contribution ID: 57 Type: Parallel contribution

Preserving gauge invariance in neural networks Friday, 6 August 2021 14:50 (20 minutes)

In this talk I present our progress on lattice gauge equivariant convolutional neural networks (L- CNNs). These new types of neural networks are a variant of convolutional neural networks (CNNs) which exactly preserve lattice gauge symmetry. By explicitly accounting for parallel transport in convolutions and allowing for bilinear operations inside the network, we show that L-CNNs can be used to approximate any gauge covariant function on the lattice. We demonstrate that our L- CNN models vastly outperform traditional CNNs in regression tasks such as computing Wilson loops from lattice gauge field configurations. In addition, we show that our L-CNN modelscanbe trained on data from small lattices while still performing well on larger lattices.

[1] “Lattice gauge equivariant convolutional neural networks”, M. Favoni, A. Ipp, D. I. Müller,D. Schuh, https://arxiv.org/abs/2012.12901

Primary author: MÜLLER, David (TU Wien) Co-authors: Mr FAVONI, Matteo (TU Wien); Dr IPP, Andreas (TU Wien); Mr SCHUH, Daniel (TU Wien)

Presenter: MÜLLER, David (TU Wien) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 44 A Virtual Tribute … / Report of Contributions Thermal Effects in Binary Neutron …

Contribution ID: 58 Type: Parallel contribution

Thermal Effects in Binary Neutron Star Merger Simulations Tuesday, 3 August 2021 09:20 (20 minutes)

Binary Neutron Star (BNS) mergers provide a rich laboratory for the study of matter at extreme densities and temperatures. In this talk we present the results of state-of-the-art BNS simulations using modern 3-parameter (density, temperature, electron fraction) equations of state (EoSs), with particular focus on behaviour due to temperature and composition dependant effects.

First, we go over the ingredients for a BNS simulation, and how our simulations differ from the norm. We then discuss the conditions experienced by matter in such a merger event, andthe implications this has for the generation of EoSs. Finally, we cover some of the physics we are attempting to study with these simulations, in particular bulk viscosity, and the difficulties in including such phenomena in simulations, such as the “true” definition of beta-equilibrium, and the need for reactions and neutrinos.

Primary author: Mr HAMMOND, Peter (University of Southampton) Co-authors: Mr ANDERSSON, Nils (University of Southampton); Mr HAWKE, Ian (University of Southampton)

Presenter: Mr HAMMOND, Peter (University of Southampton) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 45 A Virtual Tribute … / Report of Contributions Quantum Anomalies (in) Matter

Contribution ID: 59 Type: Parallel contribution

Quantum Anomalies (in) Matter Friday, 6 August 2021 14:30 (20 minutes)

Symmetry is a key concept in physics. Some symmetries exist however only in the classical world and can not be realized in the quantum theory. When this happens we speak of a (quantum) anomaly. The most prominent examples are the triangle anomalies arising the quantum field theory of chiral fermions. In particle physics they explain the short lifetime of the neutral pion, give rise to consistency conditions on gauge theories and allow powerful insight into the low energy dynamics. Over the last decade it has bee realized that anomalies also give rise to dissipationless transport phenomena in hot and dense relativistic matter. I will review this anomalous transport theory and then discuss how it can be applied to the electronics of Weyl semimetals.

Primary author: LANDSTEINER, Karl (IFT-Madrid) Presenter: LANDSTEINER, Karl (IFT-Madrid) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 46 A Virtual Tribute … / Report of Contributions Thermal QCD phase transition and…

Contribution ID: 60 Type: Parallel contribution

Thermal QCD phase transition and its scaling window from Wilson twisted mass fermions Thursday, 5 August 2021 09:30 (15 minutes)

We investigate the thermal QCD phase transition and its scaling properties on the lattice. The simulations are performed with N_f=2+1+1 Wilson twisted mass fermions at pion masses from physical up to heavy quark regime. We introduce a new chiral order parameter, which is free from linear mass contributions and turns out to be useful for the study of scaling behaviour. Our results are compatible with O(4) universal scaling for the physical pion mass and the temperature range [120:300] MeV. Violations to scaling at larger masses and other possible scenarios, including mean field behaviour and Z(2) universality class are also discussed. We provide an estimation forthe critical temperature in the chiral limit T_0.

Primary authors: KOTOV, Andrey; LOMBARDO, Maria Paola (INFN); TRUNIN, Anton (Samara University)

Presenter: KOTOV, Andrey Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 47 A Virtual Tribute … / Report of Contributions Equivariance and generalization in …

Contribution ID: 62 Type: Parallel contribution

Equivariance and generalization in neural networks Friday, 6 August 2021 15:10 (20 minutes)

The crucial role played by the underlying symmetries of high energy physics and lattice fieldthe- ories calls for the implementation of such symmetries in the neural network architectures that are applied to the physical system under consideration. In this talk we focus on the consequences of incorporating translational equivariance among the network properties, particularly in terms of performance and generalization [1]. The benefits of equivariant networks are exemplified by studying a complex scalar field theory, on which various regression and classification tasks are examined. For a meaningful comparison, promising equivariant and non-equivariant architectures are identified by means of a systematic search. The results indicate that in most ofthetasks our best equivariant architectures can perform and generalize significantly better than their non- equivariant counterparts, which applies not only to physical parameters beyond those represented in the training set, but also to different lattice sizes.

[1] “Generalization capabilities of translationally equivariant neural networks”, S.~Bulusu, M.~Favoni, A.~Ipp, D.~I.~Müller, D.~Schuh, https://arxiv.org/abs/2103.14686

Primary authors: FAVONI, Matteo (TU Wien); MÜLLER, David (TU Wien); Dr IPP, Andreas (TU Wien); Mr SCHUH, Daniel (TU Wien); Mr BULUSU, Srinath (TU Wien) Presenter: FAVONI, Matteo (TU Wien) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 48 A Virtual Tribute … / Report of Contributions On transverse momentum broaden …

Contribution ID: 64 Type: Parallel contribution

On transverse momentum broadening in real-time lattice simulations of the glasma and inthe weak-field limit Thursday, 5 August 2021 10:55 (15 minutes)

In this talk, I will report on our numerical lattice simulations of partons traversing the boost- invariant, non-perturbative glasma as created at the early stages of collisions at RHIC and LHC [1]. Since these highly energetic partons are produced from hard scatterings during heavy ion collisions, they are already affected by the first stage of the medium’s time evolution, the glasma, which is the pre-equilibrium precursor state of the quark-gluon plasma. We find that partons quickly ac- cumulate transverse momentum up to the saturation momentum during the glasma stage. More- over, we observe an interesting anisotropy in transverse momentum broadening of partons with larger broadening in the rapidity than in the azimuthal direction. Its origin can be related to correlations among the longitudinal color-electric and color-magnetic flux tubes in the initial state of the glasma. I will compare these observations to the semi-analytic results [2] obtained by a weak- field approximation, where we also find such an anisotropy in a parton’s transverse momentum broadening. [1] A. Ipp, D. I. Müller, D. Schuh, Phys. Lett. B 810 (2020), arXiv:2009.14206 https://doi.org/10.1016/j.physletb.2020.135810

[2] A. Ipp, D. I. Müller, D. Schuh, Phys. Rev. D 102 (2020), arXiv:2001.10001 https://doi.org/10.1103/PhysRevD.102.074001

Primary author: Mr SCHUH, Daniel (TU Wien) Co-authors: Dr IPP, Andreas (TU Wien); MÜLLER, David (TU Wien) Presenter: Mr SCHUH, Daniel (TU Wien) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 49 A Virtual Tribute … / Report of Contributions Study of evolution of spin polariza …

Contribution ID: 66 Type: Parallel contribution

Study of evolution of spin polarization of Lambda hyperons using spin hydrodynamics Friday, 6 August 2021 15:35 (15 minutes)

Since the first positive measurement of the Λ-hyperon global spin polarization in heavy-ion collisions by STAR in 2017, the understanding of the nature of this phenomenon is one of the most in- triguing challenges for the community. As relativistic fluid dynamics celebrates multiple successes in describing collective dynamics of the QCD matter in such reactions, the natural question arises whether the spin dynamics can also be modeled in such a framework. In this talk, the motivation for and recent outcomes of the experimental hunt for the macroscopic footprints of quantum spin in the relativistic heavy-ion collisions will be presented and the theoretical challenges connected with formulating its collective description will be discussed.

Primary author: SINGH, Rajeev (Institute of Nuclear Physics Polish Academy of Sciences, Krakow Poland)

Presenter: SINGH, Rajeev (Institute of Nuclear Physics Polish Academy of Sciences, Krakow Poland)

Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 50 A Virtual Tribute … / Report of Contributions Long and short distance behavior …

Contribution ID: 67 Type: Parallel contribution

Long and short distance behavior of the imaginary part of the heavy-quark potential Wednesday, 4 August 2021 17:20 (20 minutes)

The imaginary part of the effective heavy-quark potential can be related to the total in-medium decay width of of heavy quark-antiquark bound states. We extract the static limit of this quantity using classical-statistical simulations of the real-time Yang-Mills dynamics by measuring the temporal decay of Wilson loops. By performing the simulations on finer and larger lattices weare able to show that the nonperturbative results follow the same form as the perturbative ones. For large quark-antiquark separations, we quantify the magnitude of the non-perturbative long-range corrections to the imaginary part of the heavy-quark potential. We present our results for a wide range of temperatures, lattice spacings, and lattice volumes. We also extract an estimate ofthe heavy-quark momentum diffusion transport coefficient from the short-distance behavior ofthe classical potential.

Primary authors: SALEHI KASMAEI, Babak (Kent State University); BOGUSLAVSKI, Kirill (TU Wien, Austria); STRICKLAND, Michael (Kent State University) Presenter: SALEHI KASMAEI, Babak (Kent State University) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 51 A Virtual Tribute … / Report of Contributions Hadrons as QCD Bound States

Contribution ID: 69 Type: Parallel contribution

Hadrons as QCD Bound States Tuesday, 3 August 2021 09:20 (20 minutes)

Quarkonia are well described by the Schrödinger equation, with a linear confining potentialthat agrees with lattice QCD. For QED atoms the classical −/r potential is determined by Gauss’ law. Taking the similarity with QED at face value the confinement scale of QCD should be given bya boundary condition on Gauss’ law. Temporal gauge (A0 = 0) is well suited for bound states defined at equal time of the constituents. It preserves rotational invariance, allowing eigenstates of J 2 and J z (in the rest frame). Canonical quantization is straightforward since A⃗ (unlike A0) has a conjugate field. In temporal gauge Gauss’ law is implemented as a constraint, not as an operator equation. It determines the value of AL for each physical state, and thus also the classical potential. In QCD the classical color octet gluon field vanishes for color singlet states (whereas there isa + − dipole electric field for e e states in QED). However, each color component A of a qAq¯A state does have a longitudinal gluon field. There is a homogeneous solution of Gauss’ constraint inQCD which gives a spatially constant field energy density, thus preserving translational and rotational invariance for (globally) color singlet states. This leads to an instantaneous confining potential for each color compoent of the state. The potential is linear for qq¯, and confining also for qqq, qqg¯ and gg states. The confinement scale is given by the magnitude of the universal field energy density.

0 The confining potential isof O(s) and determines the strong binding of hadrons. The remaining contributions (gluon exchange, Fock states with transverse gluons and qq¯ sea quarks) may be included perturbatively.

This approach to gauge theory bound states is described in arXiv 2101.06721.

Primary author: HOYER, Paul (University of Helsinki) Presenter: HOYER, Paul (University of Helsinki) Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 52 A Virtual Tribute … / Report of Contributions Fermion and gluon spectral functi …

Contribution ID: 70 Type: Parallel contribution

Fermion and gluon spectral functions far from equilibrium Monday, 2 August 2021 17:30 (15 minutes)

Motivated by the quark-gluon plasma, we develop a simulation method to obtain the spectral function of (Wilson) fermions non-perturbatively in a non-Abelian gauge theory with large gluon occupation numbers. We apply our method to a non-Abelian plasma close to its non-thermal fixed point, i.e., in a far-from-equilibrium self-similar regime, and find mostly very good agreement with perturbative hard loop (HTL) calculations. For the first time, we extract the full momentum dependence of the damping rate of fermionic collective excitations and compare our results to recent non-perturbative extractions of gluonic spectral functions in two and three spatial dimensions.

Primary authors: BOGUSLAVSKI, Kirill (TU Wien, Austria); LAPPI, Tuomas (University of Jy- vaskyla); SCHLICHTING, Soeren (Universität Bielefeld) Presenter: BOGUSLAVSKI, Kirill (TU Wien, Austria) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 53 A Virtual Tribute … / Report of Contributions A novel approach to lattice QCD at …

Contribution ID: 71 Type: Parallel contribution

A novel approach to lattice QCD at finite baryon density and results on the phase diagram Thursday, 5 August 2021 09:45 (15 minutes)

In addition to the well known-sign problem, methods currently used to study finite baryon density lattice QCD suffer from additional uncontrolled systematics, coming e.g. from the analytic continuation problem one faces with the Taylor or imaginary chemical potential methods. We formulate and test a new method - sign reweighting - that works directly at finite chemical potential and is free from any such uncontrolled systematics. In particular it is free of the overlap problem, which bottlenecked more traditional reweighting methods so far. With this approach the only problem is the sign problem itself. As a first test, we apply the method to calculate the position of the critical endpoint on a coarse lattice: unimproved staggered fermions at Nτ = 4; as a second application, we also study the phase diagram with 2stout improved staggered fermions at Nτ = 6. This second one is already a reasonably fine lattice - relevant for phenomenology.

Primary authors: PASZTOR, Attila (Eötvös Loránd University, Budapest); BORSANYI, Szabolcs (Wuppertal University); FODOR, Zoltan; GIORDANO, Matteo (Eötvös University); KAPAS, Kornel (Eötvös University); KATZ, Sandor (Eötvös Loránd University); NOGRADI, Daniel (Eötvös Univer- sity); WONG, Chik Him (Wuppertal University) Presenter: PASZTOR, Attila (Eötvös Loránd University, Budapest) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 54 A Virtual Tribute … / Report of Contributions News from the strong interactions …

Contribution ID: 72 Type: Parallel contribution

News from the strong interactions program of NA61/SHINE Friday, 6 August 2021 14:30 (30 minutes)

NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a fixed-target experiment operating at the CERN SPS accelerator. The main goal of the strong interactions program of NA61/SHINE is to study the properties of the phase transition between confined matter and quark-gluon plasma by performing a two-dimensional scan in beam momentum and size of collided nuclei. Within this program, collisions of different systems (p+p, p+Pb, Be+Be, Ar+Sc, Xe+La, Pb+Pb) over awide range of beam momenta (13A-150(8)A GeV/c) have been recorded. This contribution will discuss the latest results of hadron production in p+p, Be+Be, Ar+Scand Pb+Pb reactions measured by the NA61/SHINE. In particular, the results include charged kaons and pions spectra, anisotropic flow, higher-order moments of multiplicity and net charge distributions. The presented data will be compared with the predictions of different theoretical modelsaswell as the results from other experiments. Finally, the motivation and plans for future NA61/SHINE measurements will be discussed.

Primary author: BRYLINSKI, Wojciech Presenter: BRYLINSKI, Wojciech Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 55 A Virtual Tribute … / Report of Contributions Matching hydrodynamics and the …

Contribution ID: 73 Type: Parallel contribution

Matching hydrodynamics and the equivalence principle Friday, 6 August 2021 16:00 (20 minutes)

It is known since long that hydrodynamic flow in the directions of an external gravitational force and gradient of temperature are related to each other. We consider generalizations to the cases of higher orders in hydrodynamic expansion and/or to higher orders in acceleration. We demonstrate in particular that the vortical effect in presence of gravity is reproduced via the equivalence principle while usually it is ascribed to the so called gravimagnetic anomaly. A crucial point is existence of extra conservation laws in case of non-dissipative fluids. We comment also on the duality between evaluation of various matrix elements in case of equilibrium physics and motion in external gravitational force.

Primary author: SADOFYEV, Andrey (University of Santiago de Compostela) Co-authors: MITKIN, Pavel; ZAKHAROV, Valentin Presenter: SADOFYEV, Andrey (University of Santiago de Compostela) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 56 A Virtual Tribute … / Report of Contributions Mitigation of systematic errors ind …

Contribution ID: 74 Type: Parallel contribution

Mitigation of systematic errors induced biases in ML-based selection Thursday, 5 August 2021 10:10 (20 minutes)

One of the main limitations in particle physics analyses with ML-based selection is the understanding of the implications of systematic uncertainties. The usual approach being the training using samples without systematic effects and estimating their contribution to the magnitudes measured on modified test samples. We propose here a method based on data augmentation to incorporate the systematics at the training time, which provides both an improvement in the performance and a reduction in the biases.

Primary authors: MATORRAS, Francisco (Instituto de Fisica de Cantabria, Santander, IFCA (ES)); Dr MARTÍNEZ-RUIZ DEL ÁRBOL, Pablo (IFCA- Universidad de Cantabria-CSIC); Mr CRESPO, Luis (Uni- versidad de Cantabria)

Presenter: MATORRAS, Francisco (Instituto de Fisica de Cantabria, Santander, IFCA (ES)) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 57 A Virtual Tribute … / Report of Contributions Evaluating extremely low p-values …

Contribution ID: 75 Type: Parallel contribution

Evaluating extremely low p-values with importance sampling techniques in discovery-oriented HEP analyses. Thursday, 5 August 2021 10:50 (20 minutes)

Evaluating extremely low p-values with importance sampling techniques in discovery-oriented HEP analyses.

Many results in current particle physics studies are derived using asymptotic approximations to calculate the p-value (or the significance) of the hypothesis tested. It is difficult to ensure towhich extent the requirements for these approximations are valid in cases where the number of observations is not large, for binned fits with lowly populated bins or when there are non-gaussian nuisances with a significant contribution. The common alternative of estimation with pseudo- experiments becomes unattainable if the usual “5-sigma significance” is to be claimed. A technique is proposed to overcome this problem, which permits a precise estimation of very low p-values with a modest number of pseudo-experiments for realistic cases and taking advantage of the expected signal model.

Primary author: MATORRAS, Francisco (Instituto de Fisica de Cantabria, Santander, IFCA (ES))

Presenter: MATORRAS, Francisco (Instituto de Fisica de Cantabria, Santander, IFCA (ES)) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 58 A Virtual Tribute … / Report of Contributions Tensor Renormalization Group for …

Contribution ID: 76 Type: Parallel contribution

Tensor Renormalization Group for interacting quantum fields Tuesday, 3 August 2021 09:00 (20 minutes)

We present a new tensor network algorithm for calculating the partition function of interacting quantum field theories in 2 dimensions. It is based on the Tensor Renormalization Group (TRG) protocol, adapted to operate entirely at the level of fields. This strategy was applied in Ref.[1] to the much simpler case of a free boson, obtaining an excellent performance. Here we include an arbitrary self-interaction and treat it in the context of perturbation theory. A real space analogue of the Wilsonian effective action and its expansion in Feynman graphs is proposed. Using aλφ4 theory for benchmark, we evaluate the order λ correction to the free energy. The results show a fast convergence with the bond dimension, implying that our algorithm captures well the effect of interaction on entanglement.

Primary authors: LOPEZ, Esperanza (IFT-Madrid); SIERRA, German (IFT-MAdrid); CAMPOS, Manuel (IFT-Madrid)

Presenter: LOPEZ, Esperanza (IFT-Madrid) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 59 A Virtual Tribute … / Report of Contributions Effective string description of the…

Contribution ID: 77 Type: Parallel contribution

Effective string description of the confining potential in the (2 + 1) dimensional SU(2) Lattice Gauge Theory. Friday, 6 August 2021 14:30 (30 minutes)

The SU(2) Lattice Gauge Theory in (2 + 1) dimensions is a perfect laboratory to study the fine details of the confining interquark potential. In this talk I will first discuss a few important properties of the effective string theory and then I will compare its predictions with the results ofsome recent high precision montecarlo simulations of the SU(2) LGT, looking for possible corrections beyond the Nambu-Goto model.

Primary author: CASELLE, Michele (Dep. of Physics, Torino University) Presenter: CASELLE, Michele (Dep. of Physics, Torino University) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 60 A Virtual Tribute … / Report of Contributions Collective Monte Carlo updates th …

Contribution ID: 78 Type: Parallel contribution

Collective Monte Carlo updates through tensor network renormalization Tuesday, 3 August 2021 09:40 (20 minutes)

We introduce a Metropolis-Hastings Markov chain for Boltzmann distributions of classical spin systems. It relies on approximate tensor network contractions to propose correlated collective updates at each step of the evolution. We present benchmarks for a wide variety of instances of the two-dimensional Ising model, including ferromagnetic, antiferromagnetic, (fully) frustrated and Edwards-Anderson spin glass cases, and we show that, with modest computational effort, our Markov chain achieves sizeable acceptance rates, even in the vicinity of critical points. In each of the situations we have considered, the Markov chain compares well with other Monte Carlo schemes such as the Metropolis or Wolff algorithm: equilibration times appear to be reduced bya factor that varies between 40 and 2000, depending on the model and the observable being monitored. We also present an extension to three spatial dimensions, and demonstrate that it exhibits fast equilibration for finite ferro and antiferromagnetic instances. Additionally, and although itis originally designed for a square lattice of finite degrees of freedom with open boundary conditions, the proposed scheme can be used as such, or with slight modifications, to study triangular lattices, systems with continuous degrees of freedom, matrix models, a confined gas of hard spheres, or to deal with arbitrary boundary conditions. Joint work with Miguel Frías-Pérez, Michael Mariën, David Pérez García, and Mari Carmen Bañuls (arXiv:2104.13264).

Primary author: Dr IBLISDIR, Sofyan (U. Barcelona) Presenter: Dr IBLISDIR, Sofyan (U. Barcelona) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 61 A Virtual Tribute … / Report of Contributions Maximum latent heat of neutron s …

Contribution ID: 79 Type: Parallel contribution

Maximum latent heat of neutron star matter without General Relativity Thursday, 5 August 2021 09:00 (20 minutes)

Within General Relativity there is a maximum latent heat for a first order phase transition that a neutron star can support, the Seidov limit. If neutron-star matter exceeds it, the transition to the presumed exotic phase will not be complete before the star undergoes gravitational collapse. However, this limit should generally be different in theories of modified gravity, that aretobe tested in neutron star interiors (the place where the stress-energy tensor is largest). It is then interesting to ascertain what is the strongest possible phase transition, as quantified by its latent heat, that hadron physics can still allow on its own. For this we apply the nEoS sets developed by us in collaboration with Mark Alford and Andreas Windisch https://doi.org/10.1088/1361-6471/ab2567 and that rely on extant ChPT and pQCD calculations (in the respective low- and high-density limits) and first principles alone, without reference to any astrophysical observables, making them free of assumption about the theory of gravity at the star. We obtain a bound on the maximum latent heat as function of the density (at zero temperature) at which the phase transition triggers, independently of GR. It is currently less tight than the Seidov limit and can serve as a benchmark for future progress on the equation of state from hadron physics alone.

Primary authors: LLANES-ESTRADA, Felipe Jose (Univ. Complutense de Madrid); Mrs LOPE-OTER, Eva (Universidad Complutense de Madrid)

Presenter: LLANES-ESTRADA, Felipe Jose (Univ. Complutense de Madrid) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 62 A Virtual Tribute … / Report of Contributions Assessing the systematic theory u …

Contribution ID: 80 Type: Parallel contribution

Assessing the systematic theory uncertainties of IAM unitarization Thursday, 5 August 2021 09:40 (15 minutes)

Effective Field Theories (EFTs) organized as derivative expansions are controllable as longasthe energy of the interacting particles remains small, as they do not respect exact elastic unitarity. This limits their predictive power towards new physics at a higher scale if small separations from the Standard Model are found at the LHC or elsewhere. This is exemplified by ChPT: though nominally the EFT could be extended to a sizeable valuebe- low 4 pi F (about 1.2 GeV) the p-wave expansion stops converging little above threshold because of the presence of the strong rho(770) resonance. Unitarized chiral perturbation theory extends the EFT reach to regimes where partial waves satu- rate unitarity, but its systematic uncertainty is unknown. We address this shortcoming for the Inverse Amplitude Method (IAM), and carefully following its dispersive derivation, we quantify the uncertainty introduced at each step. We compare its hadron ChPT and its electroweak sector Higgs EFT applications. We find that the relative theoretical uncertainty of the IAM at the mass of the first resonanceen- countered in a partial-wave is of the same order in the counting as the starting uncertainty of the EFT at near-threshold energies, so that its unitarized extension should a priori be expected to be reasonably successful. A prerequisite is to provide a check for zeroes of the partial-wave amplitude before applying the method and, if any appear near the resonance region, we show how to adequately modify the IAM to take them into account. Thus, if the LHC experiments were to measure a separation from the SM of WLWL or hhscatter- ing encoded in HEFT coefficients, the IAM could be used to extrapolate to higher energies witha measure of theoretical control.

Primary authors: LLANES-ESTRADA, Felipe Jose (Univ. Complutense de Madrid); OLLER, Jose Antonio (Univ. de Murcia); SALAS-BERNÁRDEZ, Alexandre (Univ. Complutense de Madrid) Presenter: SALAS-BERNÁRDEZ, Alexandre (Univ. Complutense de Madrid) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 63 A Virtual Tribute … / Report of Contributions Measurements of quarkonium pol …

Contribution ID: 81 Type: Parallel contribution

Measurements of quarkonium polarization with CMS Friday, 6 August 2021 15:10 (20 minutes)

In this talk we will present several quarkonium polarization measurements that the CMS collaboration has made, in the bottomonium and charmonium families. Emphasis will be given tothe most recent measurements, including the result on the chi_c1 and chi_c2 polarizations.

Primary authors: PETRUSHANKO, Sergey (Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University); ARAUJO, Mariana Presenter: ARAUJO, Mariana Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 64 A Virtual Tribute … / Report of Contributions The unified equation of state with…

Contribution ID: 85 Type: Parallel contribution

The unified equation of state with induced surface tension consistent with astrophysical, gravitational, high- and low- energy nuclear physics data Thursday, 5 August 2021 10:10 (20 minutes)

We present the unified equation of state with induced surface tension (IST) that reproduces the nuclear matter properties, fulfills the proton flow constraint, provides a high-quality description of hadron multiplicities created during the nuclear-nuclear collision experiments, and is equally consistent with NS observations. Obtained tidal Love numbers are in full agreement with the constraints deduced from the observations of the binary NS mergers. Moreover, we demonstrate the IST EoS to be consistent with the universality of the I-Love-Q relations. Cooling simulations for isolated neutron star show very good agreement with astrophysical observations.

Primary authors: SAGUN, Violetta (University of Coimbra); IVANYTSKYI, Oleksii (University of Wroclaw)

Presenter: SAGUN, Violetta (University of Coimbra) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 65 A Virtual Tribute … / Report of Contributions A universal holographic wavefunc …

Contribution ID: 86 Type: Parallel contribution

A universal holographic wavefunction for light hadrons Friday, 6 August 2021 16:00 (20 minutes)

I summarize recent work pointing towards the existence of a universal holographic light-front wavefunction for light mesons and nucleons. This holographic wavefunction, which describes simultaneously a bound state in light-front QCD and the propagation of string modes in a dilaton- modified 5-dimensional anti de Sitter spacetime, is a specific realization of the gauge-gravity duality. The modification of the holographic wavefunction by the spin structures specific tomesons and nucleons, leads to a remarkable simultaneous description of EM transition form factors of light mesons as well as the Dirac and Pauli form factors of nucleons.

Primary author: SANDAPEN, Ruben (Acadia University) Presenter: SANDAPEN, Ruben (Acadia University) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 66 A Virtual Tribute … / Report of Contributions The A2 Asymmetry and Gluon Pr …

Contribution ID: 89 Type: Parallel contribution

The A2 Asymmetry and Gluon Propagators in Lattice SU(3) Gluodynamics at T ≃ Tc Tuesday, 3 August 2021 09:40 (20 minutes)

We study numerically the chromoelectric-chromomagnetic asymmetry of the dimension two A2 gluon condensate as well as the infrared behavior of the gluon propagators at T ≃ Tc in the Landau-gauge SU(3) lattice gauge theory. We find that a very significant correlation of the real part of the Polyakov loop with theasymmetry as well as with the longitudinal propagator makes it possible to determine the critical behavior of these quantities. We obtain the screening masses in different Polyakov-loop sectors and discuss the dependence of chromoelectric and chromomagnetic interactions of static color charges and currents on the choice of the Polyakov-loop sector in the deconfinement phase.

Primary author: ROGALYOV, Roman (Institute for High Energy Physics of NRC Kurchatov Insti- tute)

Co-authors: Mr MITRJUSHKIN, Valentin (Joint Institute for Nuclear Research, 141980 Dubna, Rus- sia); Mr BORNYAKOV, Vitaly (Institute for High Energy Physics NRC “Kurchatov Institute”); Dr GOY, Vladimir (Far Eastern Federal University)

Presenter: ROGALYOV, Roman (Institute for High Energy Physics of NRC Kurchatov Institute)

Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 67 A Virtual Tribute … / Report of Contributions Thermal monopoles and deconfine …

Contribution ID: 90 Type: Parallel contribution

Thermal monopoles and deconfinement in full QCD Wednesday, 4 August 2021 17:30 (30 minutes)

We analyse the properties of thermal monopoles in the high temperature phase of QCD with N_f = 2+1 flavours and physical quark masses. In particular, we determine the temperature where monopoles show condensation properties similar to those already studied in pure gauge Yang- Mills theories and related to the onset of confinement, comparing it with the temperature where chiral symmetry restoration takes place.

Primary authors: D’ELIA, Massimo (University of Pisa and INFN); Dr CARDINALI, Marco (INFN)

Presenter: D’ELIA, Massimo (University of Pisa and INFN) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 68 A Virtual Tribute … / Report of Contributions The LHCb pentaquarks in molecul …

Contribution ID: 91 Type: Parallel contribution

The LHCb pentaquarks in molecular picture Thursday, 5 August 2021 09:20 (20 minutes)

The nature of the three narrow hidden-charm pentaquark Pc states, i.e., Pc(4312), Pc(4440) and Pc(4457), is under intense discussion since their discovery from the updated analysis of the pro- 0 → − cess Λb J/ψpK by LHCb. We employ an coupled-channel approach to study the Pc states observed by LHCb Collaborations in the molecuar picture, in which the Pc states are treated as (∗) (∗) ΣcD¯ molecules, by including the ΛcD¯ and ηcp in addition to the J/ψp as explicit inelastic channels as required by unitarity and heavy quark spin symmetry (HQSS), respectively. Since inelastic parameters are very badly constrained by the current data, different calculation schemes are considered. It is shown that to obtain cutoff independent results, OPE in the multichannel system is to be supplemented with S-wave-to-D-wave mixing contact terms. As a result, in line with our previous analysis, we demonstrate that the experimental data for the J/ψp invariant mass distribution are consistent with the interpretation of the Pc(4312) and Pc(4440)/Pc(4457) ∗ as ΣcD¯ and ΣcD¯ hadronic molecules, respectively, and that the data show clear evidence for a ∗ ¯ new narrow state, Pc(4380), identified as a Σc D molecule, which should exist as a consequence of HQSS. However, now two solutions are found in all schemes which describe the data equally well, and thus no unambiguous conclusion about the quantum numbers of the Pc(4440) and Pc(4457) from data in the J/ψp channel alone is possible. It is argued though that one of these solutions, P − − in which the quantum numbers of the Pc(4440) and Pc(4457) are J = 3/2 and 1/2 , respectively, is theoretically preferred. Moreover, we demonstrate that the line shapes related to the (∗) ¯ 0 → (∗) ¯ − Pc(4440) and the Pc(4457) in the Σc D and ηcp mass distributions from Λb Σc DK and 0 → − Λb ηcpK will allow one to pin down the quantum numbers in the hadronic molecular picture, (∗) once the data are available. We also investigate possible pentaquark signals in the ΛcD¯ final states.

Primary authors: Dr DU, Meng-Lin (Valencia U., IFIC); Dr BARU, Vadim (Institut für Theoretische Physik II, University of Bochum); GUO, Feng-Kun (Institute of Theoretical Physics, Chinese Academy of Sciences); HANHART, Christoph (IAS-4, Forschungszentrum Jülich); Prof. MEIßNER, Ulf-G. (Univ. Bonn/FZ Jülich); Prof. OLLER, Jose (Universidad de Murcia); Prof. WANG, Qian (South China Normal University)

Presenter: Dr DU, Meng-Lin (Valencia U., IFIC) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 69 A Virtual Tribute … / Report of Contributions Is the Chiral Magnetic Effect fast e …

Contribution ID: 92 Type: Parallel contribution

Is the Chiral Magnetic Effect fast enough? Friday, 6 August 2021 15:40 (20 minutes)

It depends: While we find within holography that the lifetime of the magnetic field for collider energies like the ones achieved at RHIC is long enough to build up the chiral magnetic current, the lifetime of the magnetic field at LHC seems to be too short. We study the real time evolution of the chiral magnetic effect out-of-equilibrium in strongly coupled holographic gauge theories. We consider the backreaction of the magnetic field onto the geometry and monitor pressure and chiral magnetic current. Our findings show that generically at small magnetic field the pressure builds up faster than the chiral magnetic current whereas at strong magnetic field the opposite is true. At large charge we also find that equilibration is delayed significantly due to longlived oscillations. We also match the parameters of our model to QCD parameters and draw lessons of possible relevance to the realization of the chiral magnetic effect in heavy ion collisions. In particular, we find an equilibration time of about ∼0.35 fm/c in presence of the chiral anomalyfor plasma temperatures of order T∼300−400 MeV.

Primary author: GRIENINGER, Sebastian Co-authors: Prof. LANDSTEINER, Karl (IFT Madrid); MORALES-TEJERA, Sergio (IFT Madrid); Dr GOSH, Jewel (IU Bangladesh)

Presenter: GRIENINGER, Sebastian Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 70 A Virtual Tribute … / Report of Contributions Center-vortex ensembles and the a …

Contribution ID: 93 Type: Parallel contribution

Center-vortex ensembles and the asymptotic Casimir law Friday, 6 August 2021 15:40 (20 minutes)

In this work, we shall analyze mixed ensembles formed by percolating oriented and nonoriented center-vortices in three and four dimensions. In particular, we suggest that the inclusion of the natural interactions and possible matching rules are responsible for the emergence of topological solitons that accommodate an asymptotic Casimir scaling law and the observed flux tube profiles.

Primary authors: Prof. OXMAN, Luis E. (Fluminense Federal University); Mr SIMÕES, Gustavo M.; Mr JUNIOR, David R. Presenter: Prof. OXMAN, Luis E. (Fluminense Federal University) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 71 A Virtual Tribute … / Report of Contributions Renormalizability of the center- …

Contribution ID: 94 Type: Parallel contribution

Renormalizability of the center-vortex free sector of Yang-Mills theory Thursday, 5 August 2021 09:20 (20 minutes)

In this work, we analyzed a recent proposal to detect SU(N) continuum Yang-Mills sectors labeled by center vortices, inspired by Laplacian-type center gauges in the lattice. Initially, after the introduction of appropriate external sources, we obtained a rich set of sector-dependent Ward identities, which can be used to control the form of the divergences. Next, we were able to show the all-order multiplicative renormalizability of the center-vortex free sector. These are important steps towards the establishment of a first principles, well-defined, and calculable Yang-Mills ensemble.

Primary authors: ROSA JUNIOR, David (University of Tübingen, Fluminense Federal Univer- sity); Prof. F. SOBREIRO, Rodrigo (Fluminense Federal University); Dr FIORENTINI, Diego (Flumi- nense Federal University); Prof. E. OXMAN, Luis (Fluminense Federal University) Presenter: ROSA JUNIOR, David (University of Tübingen, Fluminense Federal University) Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 72 A Virtual Tribute … / Report of Contributions Quantized vortices in pionic super …

Contribution ID: 95 Type: Parallel contribution

Quantized vortices in pionic superfluid Wednesday, 4 August 2021 17:00 (20 minutes)

The quantized vortices in superfluid confined phase may transform the large orbital momentum generated in heavy-ion collisions to the spin of baryons in the vortex core. The effect emerges only at some threshold angular velocity providing the qualitative explanation for the recent low energy data. The formation of vortex rings is considered as a mechanism of relation between localand global baryon polarization. Similarity and difference with vortices in liquid helium and interplay between condensed matter and high energy physics are discussed.

Primary authors: TERYAEV, Oleg (JINR); ZAKHAROV, Valentin (ITEP (Moscow)) Presenters: TERYAEV, Oleg (JINR); ZAKHAROV, Valentin (ITEP (Moscow)) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 73 A Virtual Tribute … / Report of Contributions Deuteron charge and quadrupole f …

Contribution ID: 98 Type: Parallel contribution

Deuteron charge and quadrupole form factors in chiral effective field theory Monday, 2 August 2021 17:00 (20 minutes)

We analyze the deuteron charge and quadrupole form factors using the latest NN potentials and charge-density operators derived within chiral effective field theory. We derive relations between 1N,2N charge densities and nucleon form factors and employ several recent empirical parametrizations for proton and neutron form factors. We fit low-energy constants appearing in the fifth-order 2N charge-density operators to the world data on the shape of deuteron form factors and predict the deuteron structure radius and its quadrupole moment. Using predicted structure radius and precise data on the deuteron-proton charge-radii-difference we extract the charge radius of the neutron. A careful analysis of various sources of the uncertainties of all predictions is performed.

Primary authors: FILIN, Arseniy (Ruhr-Universität Bochum); MÖLLER, Daniel (Ruhr-Universität Bochum, Germany); Dr BARU, Vadim (Institut für Theoretische Physik II, University of Bochum); EPEL- BAUM, Evgeny (Ruhr University Bochum); Dr KREBS, Hermann (Ruhr-Universität Bochum, Germany); Dr REINERT, Patrick (Ruhr-Universität Bochum, Germany)

Presenter: FILIN, Arseniy (Ruhr-Universität Bochum) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 74 A Virtual Tribute … / Report of Contributions Vortices in PT-symmetric non- …

Contribution ID: 101 Type: Parallel contribution

Vortices in PT-symmetric non-Hermitian two-component superfluid Thursday, 5 August 2021 10:10 (20 minutes)

We discuss vortex solutions in the non-Hermitian parity-time-symmetric relativistic model with two interacting scalar complex fields. In the London limit, the vortex singularities in different condensates experience dissipative dynamics unless they overlap. At finite quartic couplings, the vortices appear in the PT-symmetric regions with broken U(1) symmetry. We find the phase diagram of the interacting model where the PT-symmetric and PT-broken regions together with the U(1)-symmetric and U(1)-broken phases form complicated patterns.

Primary authors: BEGUN, Alexander (Far Eastern Federal University); Dr CHERNODUB, Maxim (Institut Denis Poisson, Tours, France); MOLOCHKOV, Alexander (Far Eastern Federal University)

Presenter: BEGUN, Alexander (Far Eastern Federal University) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 75 A Virtual Tribute … / Report of Contributions Nonlocal Potts model on random l…

Contribution ID: 103 Type: Parallel contribution

Nonlocal Potts model on random lattice and chromatic number of the plane Thursday, 5 August 2021 10:30 (20 minutes)

Statistical models are a powerful tool for investigation of complex system’s behaviour. Most of the models considered in the literature are defined on regular lattices with nearest neighbour interactions. The models with nonlocal interaction kernels have been less studied. In our studywe investigate an example of such a model - the nonlocal q-color Potts model on a random d = 2 lattice. Only same color spins at unit distance (within some margin δ) interact. The goal is to find minimum energy configuration starting from some random coloring of the sites. Wepresent the results of supercomputer simulations of this system and discuss the corresponding patterns. Conjectured relation with the problem of finding the chromatic number of the plane is discussed.

Primary authors: SHEVCHENKO, Vladimir (NRC Kurchatov Institute); TANASHKIN, Aleksei (Far Eastern Federal University)

Presenter: TANASHKIN, Aleksei (Far Eastern Federal University) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 76 A Virtual Tribute … / Report of Contributions Holography of SCGT

Contribution ID: 105 Type: Parallel contribution

Holography of SCGT Tuesday, 3 August 2021 09:00 (20 minutes)

The “periodic table” of strongly coupled gauge theories remains only sketchily understood. Holog- raphy has developed to the point where bottom up constructions can describe the spectrum of individual gauge theories (based on assumptions of their running) including quarks in different representations and higher dimension operators. I highlight the method with a “perfected” version of the AdS dual of QCD and results for composite higgs models with two representations of quarks. The method highlights questions about the degree to which energy scales can be split ingeneric gauge theories including whether confinement and chiral symmetry breaking are linked.

Primary author: Prof. EVANS, Nick (University of Southampton) Presenter: Prof. EVANS, Nick (University of Southampton) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 77 A Virtual Tribute … / Report of Contributions High-energy physics at ultracold t …

Contribution ID: 107 Type: Parallel contribution

High-energy physics at ultracold temperatures Tuesday, 3 August 2021 09:20 (20 minutes)

Understanding the nature of confinement, as well as its relation with the spontaneous breaking of chiral symmetry, remains one of the long-standing questions in high-energy physics. The dif- ficulty of these task stems from the limitations of current analytical and numerical techniques to address nonperturbative phenomena in non-Abelian gauge theories. The situation becomes particularly problematic when trying to analize the phase diagram of QCD at large Baryon densities, where a confinement-deconfinement transition between the hadronic and the quark-gluon plasma phases takes place. Recent progress with atomic quantum simulators indicates an alternative direction to overcome these limitations. In this talk, I will present two different approaches to address the physics of confinement using near-term quantum devices. In the first one, I will considerone of the simplest gauge theories in the presence of dynamical matter, and I will show how, using ideas drawn from topology, deconfinemened states can be prepared using less experimental re- sources [1]. In the second one, I will show how particle physics phenomenology emerges in even simpler models that do not possess gauge invariance [2], and are thus simpler to implement with atomic systems such as ultracold atoms in optical lattices. This would allow to study, for instance, confinement-deconfinement transitions and chiral symmetry restoration under controllable experimental conditions.

[1] Daniel González-Cuadra et al., Phys. Rev. X 10, 041007 (2020) [2] Daniel González-Cuadra et al., PRX Quantum 1, 020321 (2020)

Primary author: GONZÁLEZ CUADRA, Daniel (ICFO) Co-authors: Dr TAGLIACOZZO, Luca (ICCUB Barcelona); Dr BERMUDEZ, Alejandro (Universidad Complutense de Madrid); Prof. LEWENSTEIN, Maciej (ICFO - Institute of Photonic Sciences); Prof. AIDELSBURGER, Monika (LMU Munich); Dr DAUPHIN, Alexandre (ICFO - The Institute of Photonic Sciences)

Presenter: GONZÁLEZ CUADRA, Daniel (ICFO) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 78 A Virtual Tribute … / Report of Contributions Study of high-pT direct photons in …

Contribution ID: 108 Type: Parallel contribution

Study of high-pT direct photons in small systems at PHENIX

High pT direct photons are electrically and color neutral, produced in initial hard scattering. By measuring the nuclear modification factor R_AA in large ion collisions, the neutral property has been confirmed, as the R_AA of direct photons remains unity, while, in contrast, jet quenching and energy loss of parent partons are observed for final state hard hadrons. The size of the medium, characterized by centrality, relates to the energy loss. However, the size of the medium in small systems, such as p+Au and d+Au collisions, might be too small to impose large energy loss on partons. Nonetheless, the nuclear modification of final state hadrons shows suppression in central, and, surprisingly, enhancement in peripheral collisions. One possible reason of this surprising result might be that the centrality determination is possibly biased in small-on-large collisions. Therefore, the colorlessness, i.e. lack of interaction ofhigh pT direct photons with the medium can be used to study the appropriateness of the centrality determination, as its nuclear modification factor is independent of centrality and pT.

In this talk, we will present the status of the analysis of high pT direct photons in p+Au and d+Au collisions, and discuss its implication with respect to the centrality-dependent hadron spectra.

Primary author: SUN, Zhandong Presenter: SUN, Zhandong Session Classification: Parallel

Track Classification: D: Deconfinement

September 28, 2021 Page 79 A Virtual Tribute … / Report of Contributions Magnetic Knots In Superconducto …

Contribution ID: 109 Type: Parallel contribution

Magnetic Knots In Superconductors With Broken Inversion Symmetry Thursday, 5 August 2021 10:50 (20 minutes)

The broken inversion symmetry of underlying crystals of non-centrosymmetric superconductors gives rise to new nontrivial phenomena, such as magnetoelectric effects and helical phases. We study non-centrosymmetric superconductor using the Ginzburg-Landau effective model supplemented with a parity-odd Lifshitz term. We show that these parity-odd superconductors possess knotted solitons in a form of a self-linked magnetic field, which resemble Chandrasekhar-Kendall states in astrophysical plasma. We present explicit analytical solutions for material with the crys- tallographic O - point group. We find that the magnetic field in these solutions is not quantized. The spatial distribution of the supercurrent is demonstrated.

Primary authors: KORNEEV, Anatolii (Far Eastern Federal University); Dr CHERNODUB, Maxim (Institut Denis Poisson, Tours, France); MOLOCHKOV, Alexander (Far Eastern Federal University)

Presenter: KORNEEV, Anatolii (Far Eastern Federal University) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 80 A Virtual Tribute … / Report of Contributions Finding the deconfinement temper …

Contribution ID: 111 Type: Parallel contribution

Finding the deconfinement temperature in lattice Yang-Mills theories from outside the scaling window with machine learning Wednesday, 4 August 2021 17:40 (20 minutes)

We study the machine learning techniques applied to the lattice gauge theory’s critical behavior, particularly to the confinement/deconfinement phase transition in the SU(2) and SU(3) gauge theories. We find that the neural network, trained on lattice configurations of gauge fieldsatan unphysical value of the lattice parameters as an input, builds up a gauge-invariant function, and finds correlations with the target observable that is valid in the physical region of the parameter space. In particular, we show that the algorithm may be trained to build up the Polyakov loop which serves an an order parameter of the deconfining phase transition. The machine learning techniques can thus be used as a numerical analog of the analytical continuation from easily accessible but physically uninteresting regions of the coupling space to the interesting but potentially not accessible regions.

Primary authors: Mr MOLOCHKOV, Alexander (Pacific Quantum Center, Far Eastern Federal Uni- versity, 690950 Vladivostok, Russia); Mr BOYDA, Denis (Pacific Quantum Center, Far Eastern Federal University, 690950 Vladivostok, Russia); Mr CHERNODUB, Maxim (Institut Denis Poisson CNRS/UMR 7013, Universit\’e de Tours, 37200 France); Mr GERASIMENUIK, Nikolai (Pacific Quantum Center, Far Eastern Federal University, 690950 Vladivostok, Russia); Mr LIUBIMOV, Sergei (Pacific Quantum Cen- ter, Far Eastern Federal University, 690950 Vladivostok, Russia); Mr GOY, Vladimir (Pacific Quantum Center, Far Eastern Federal University, 690950 Vladivostok, Russia)

Presenter: Mr GERASIMENUIK, Nikolai (Pacific Quantum Center, Far Eastern Federal University, 690950 Vladivostok, Russia) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 81 A Virtual Tribute … / Report of Contributions Progress towards dynamical fermi …

Contribution ID: 112 Type: Parallel contribution

Progress towards dynamical fermions in flow-based MCMC for lattice ensemble generation Wednesday, 4 August 2021 17:20 (20 minutes)

Critical slowing down and topological freezing are key obstacles to progress in lattice QCD calculations of hadronic properties causing the cost of ensemble generation to severely diverge in the continuum limit. Recently, a class of machine learning techniques known as flow-based models has been successfully applied to produce exact sampling schemes that can circumvent critical slowing down and/or topological freezing in purely bosonic proof-of-principle applications. I will briefly summarize these flow-based MCMC methods and discuss progress towards including the contributions of fermionic degrees of freedom in this method, required for example to include dynamical quark contributions to flow-based sampling for lattice QCD.

Primary authors: ALBERGO, Michael (NYU); KANWAR, Gurtej (Massachusetts Institute of Tech- nology); SÉBASTIEN, Racanière (DeepMind); REZENDE, Danilo Jimenez (DeepMind); URBAN, Julian M. (University of Heidelberg); Dr BOYDA, Denis (MIT / Argonne National Lab); Prof. CRANMER, Kyle (NYU); Dr HACKETT, Daniel C. (MIT); SHANAHAN, Phiala (MIT) Presenter: KANWAR, Gurtej (Massachusetts Institute of Technology) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 82 A Virtual Tribute … / Report of Contributions Heavy quark diffusion in an overo …

Contribution ID: 113 Type: Parallel contribution

Heavy quark diffusion in an overoccupied gluon plasma Thursday, 5 August 2021 10:10 (20 minutes)

We extract the diffusion coefficient κ and the resulting momentum broadening ⟨p2⟩ of a heavy quark embedded in a far-from-equilibrium gluon plasma using classical statistical lattice simulations. We find several features in the time dependence of the momentum broadening: ashort initial rapid growth of ⟨p2⟩, followed by linear growth with time due to Langevin-type dynamics and damped oscillations around this growth at the plasmon frequency. We show that these novel oscillations are not easily explained using perturbative techniques but result from an excess of gluons at low momenta. These oscillation are therefore a gauge invariant confirmation ofthein- frared enhancement we had previously observed in gauge-fixed correlation functions. We argue that the kinetic theory description of such systems becomes less reliable in the presence of this IR enhancement.

Primary authors: PEURON, Jarkko (Lund university); BOGUSLAVSKI, Kirill (TU Wien, Aus- tria); LAPPI, Tuomas (University of Jyvaskyla); KURKELA, Aleksi (CERN and Univ. Stavanger) Presenter: PEURON, Jarkko (Lund university) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 83 A Virtual Tribute … / Report of Contributions Another look at the Landau gauge …

Contribution ID: 114 Type: Parallel contribution

Another look at the Landau gauge three-gluon vertex Monday, 2 August 2021 17:40 (20 minutes)

The lattice three-gluon vertex in the Landau gauge is revisited using a large physical volume ∼(8fm)^4 and a large statistical ensemble. The improved calculation explores the symmetries ofthe hypercubic lattice to reduce the statistical uncertainties andto address the evaluation of the lattice artefacts. In particular we focus on the low energy behaviour of the vertex and look at evidences for (or not for) a change of sign and its relation with ghost dominance.

Primary authors: Mr CATUMBA, Guilherme (Universidade de Coimbra); Prof. OLIVEIRA, Orlando (Universidade de Coimbra); SILVA, Paulo (University of Coimbra) Presenter: SILVA, Paulo (University of Coimbra) Session Classification: Parallels Track G

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 84 A Virtual Tribute … / Report of Contributions Extreme Matter meets Extreme Gr …

Contribution ID: 115 Type: Parallel contribution

Extreme Matter meets Extreme Gravity: Observational Implications of Ultra-Heavy Neutron Stars with Cross-Overs and Phase Transitions Wednesday, 4 August 2021 17:00 (20 minutes)

In this work, we focus on identifying which conditions generate massive stars and how these affect the radii and tidal deformability of intermediate and massive stars. We build equations of state either from realistic models with exotic degrees of freedom or in a model-independent approach, using a functional form of the speed of sound and discuss cross-overs, first-order phase transitions, and different kinds of twin-star solutions. We focus on the implications of GW190814 as a neutron- star constraint, but also discuss GW170817, J0030+0451, J0740+6620, and the binary companion to V723 Mon.

Primary author: DEXHEIMER, Veronica (Kent State University) Presenter: DEXHEIMER, Veronica (Kent State University) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 85 A Virtual Tribute … / Report of Contributions Decomposition of the static potent …

Contribution ID: 116 Type: Parallel contribution

Decomposition of the static potential in MA gauge Thursday, 5 August 2021 09:30 (30 minutes)

Decomposition of SU(2) gauge field into monopole and monopoleless components is studied in SU(2) gluodynamics and in QC_2D with nonzero quark chemical potential after fixing MA gauge. For both components we calculate respective static potential and compare their sum with the nonabelian static potential. We demonstrate good agreement in the confinement phase and discuss the implications of our results.

Primary authors: Mr KUDROV, Ilya (ITEP, Moscow); ROGALYOV, Roman (Institute for High Energy Physics of NRC Kurchatov Institute); BORNYAKOV, Vitaly (IHEP, Protvino); Mr GOY, Vladimir (Pacific Quantum Center, Far Eastern Federal University, 690950 Vladivostok, Russia)

Presenter: BORNYAKOV, Vitaly (IHEP, Protvino) Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 86 A Virtual Tribute … / Report of Contributions Gravitational form factors on the l …

Contribution ID: 118 Type: Parallel contribution

Gravitational form factors on the lattice Monday, 2 August 2021 17:20 (20 minutes)

Hadronic matrix elements of the QCD energy-momentum tensor can be parametrized in terms of gravitational form factors (GFFs) which, through their dependence on momentum transfer and decomposition into quark and glue contributions, encode information about the distributions of energy, angular momentum, pressure, and shear forces within a hadron spatially and amongst its constituents. GFFs can be constrained indirectly by experiments through their relation with generalized parton distributions, but they are directly and straightforwardly accessible to lattice calculations. We present the results of a recent lattice calculation at unphysically heavy pion masses of the gluonic contributions to the GFFs (and various densities derived from them) of the rho meson and delta baryon, which are as yet unconstrained by experiment, extending previous studies of the gluon GFFs of the pion and nucleon. We discuss further progress in an ongoing program of lattice calculations to determine the GFFs of the physical proton with full control over uncertain- tities, including both quark and glue contributions, providing access to the physical energy, spin, pressure, and shear force densities.

Primary authors: HACKETT, Daniel (MIT); PEFKOU, Dimitra (MIT); SHANAHAN, Phiala (MIT); DETMOLD, William Presenter: HACKETT, Daniel (MIT) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 87 A Virtual Tribute … / Report of Contributions Thermal modification of open …

Contribution ID: 119 Type: Parallel contribution

Thermal modification of open heavy-flavor mesons from an effective hadronic theory Thursday, 5 August 2021 10:30 (20 minutes)

We have developed a self-consistent theoretical approach to study the modification of the properties of heavy mesons in hot mesonic matter which takes into account chiral and heavy-quark spin-flavor symmetries. The heavy-light meson-meson unitarized scattering amplitudes incou- pled channels incorporate thermal corrections by using the imaginary-time formalism, as well as the dressing of the heavy mesons with the self-energies [1, 2]. As a result, the open heavy-flavour ground-state spectral functions broaden and their peak is shifted towards lower energies with increasing temperatures. I will discuss the implications for the excited mesonic states generated dynamically in this heavy-light molecular model. In addition I will show meson Euclidean correlators calculated using the thermal ground-state spectral functions obtained with this methodology and their comparison with recent open-charm lattice correlators [3].

[1] G. Montaña, A. Ramos, L. Tolos and J. M. Torres-Rincon, Phys. Lett. B 806 (2020), 135464 doi:10.1016/j.physletb.2020. [2] G. Montaña, A. Ramos, L. Tolos and J. M. Torres-Rincon, Phys.Rev.D 102 (2020) 9, 096020 doi:10.1103/PhysRevD.102.096020 [3] G. Montaña, O. Kaczmarek, L. Tolos and A. Ramos, Eur.Phys.J.A 56 (2020) 11, 294 doi:10.1140/epja/s10050- 020-00300-y

Primary author: MONTAÑA FAIGET, Gloria (University of Barcelona - ICCUB) Co-authors: RAMOS, Angels (Universitat de Barcelona); TOLOS, Laura (ICE & University of Sta- vanger); TORRES-RINCON, Juan (Goethe University Frankfurt) Presenter: MONTAÑA FAIGET, Gloria (University of Barcelona - ICCUB) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 88 A Virtual Tribute … / Report of Contributions Quarkonium production in soft gl…

Contribution ID: 121 Type: Parallel contribution

Quarkonium production in soft gluon factorization Friday, 6 August 2021 14:30 (20 minutes)

Soft gluon factorization (SGF) is a new approach to describe heavy quarkonium production and decay. As the SGF resums a series of velocity corrections in NRQCD approach, it is expected to have a better perturbative convergence. In this talk, I will discuss the application of SGF forboth exclusive quarkonium production and inclusive quarkonium production. The result shows that the SGF has a potential to explain puzzles in the quarkonium field.

Primary author: MA, Yan-Qing Presenter: MA, Yan-Qing Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 89 A Virtual Tribute … / Report of Contributions Quark Gluon Vertex from N_F=2 L…

Contribution ID: 122 Type: Parallel contribution

Quark Gluon Vertex from N_F=2 Lattice QCD Thursday, 5 August 2021 09:40 (20 minutes)

We study the quark-gluon vertex in the limit of vanishing gluon momentum using lattice QCD with 2 flavors of O(a) improved Wilson fermions, for several lattice spacings and quark masses. We find that all three form factors in this kinematics have a signicant infrared strength, and that both the leading form factor 1, multiplying the tree-level vertex structure, and the scalar, chiral symmetry breaking form factor 3 are signicantly enhanced in the infrared compared to the quenched (Nf = 0) case. These enhancements are orders of magnitude larger than predicted by one-loop perturbation theory. We nd only a weak dependence on the lattice spacing and quark mass.

Primary author: Dr KIZILERSU, Ayse (University of Adelaide) Co-authors: Dr SKULLERUD, Jonivar (University of Ireland Maynooth); Dr OLIVEIRA, Orlando (University of Coimbra); Dr STERNBECK, Andre (Friedrich-Schiller-Universitat Jena); Dr SILVA, Paulo (University of Coimbra)

Presenter: Dr KIZILERSU, Ayse (University of Adelaide) Session Classification: Parallels Focus Subsection

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 90 A Virtual Tribute … / Report of Contributions Confinement and Pseudoscalar Gl …

Contribution ID: 123 Type: Parallel contribution

Confinement and Pseudoscalar Glueball Spectrum in the 2+1D QCD-Like Theory from Non-Susy D2 Brane Tuesday, 3 August 2021 09:00 (20 minutes)

We study two important properties of 2+1D QCD, namely confinement and Pseudoscalar glueball spectrum, using holographic approach. The confined state of the bounded quark-antiquark pair occurs in the self-coupling dominated nonperturbative regime, where the free gluons form the bound states, known as glueballs. The gauge theory corresponding to low energy decoupled geometry of isotropic non-supersymmetric D2 brane, which is again similar to the 2+1D YM theory, has been taken into account but in this case the coupling constant is found to vary with the energy scale. At BPS limit, this theory reduces to Supersymmetric YM theory. We have considered NG action of a test string and calculate the potential of such confined state located on the boundary. The QCD flux tube tension for large quark-antiquark separation is observed to be a monotonically increasing function of running coupling. The mass spectrum of Pseudoscalar glueball is evaluated numerically from the fluctuations of the axion in the gravity theory using WKB approximation. This produces the mass to be related to the string tension and the levels of the first threeenergy states. The various results that we obtained quite match with those previously studied through the lattice approach.

Primary authors: Ms CHAKRABORTY, ADRITA (Indian Institute of Technology Kharagpur); Dr NAYEK , KUNTAL (Indian Institute of Technology Kharagpur)

Presenter: Ms CHAKRABORTY, ADRITA (Indian Institute of Technology Kharagpur) Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 91 A Virtual Tribute … / Report of Contributions Abelian Dirac-type monopoles and …

Contribution ID: 124 Type: Parallel contribution

Abelian Dirac-type monopoles and the dual Meissner effect in QCD Thursday, 5 August 2021 10:30 (20 minutes)

Quark confinement mechanism is one of unsolved important problems. In the dual Meissner picture of color confinement, it is considered that the color flux tube between static quarks iscaused by the condensation of color magnetic monopoles in the QCD vacuum. In this talk, we show new results of the dual Meissner effect due to the violation of non-Abelian Bianchi identity corresponding to Abelian Dirac-type monopoles in QCD. In particular, we discuss the vacuum type by evaluating the Ginzburg-Landau parameter through the measurements of Abelian electric field and Abelian squared monopole density in pure SU(3) gauge theory without gauge fixing.

Primary author: HIRAGUCHI, Atsuki Co-authors: Dr ISHIGURO, Katsuya (Library and Information Technology, Kochi University); SUZUKI, Tsuneo (Research Center for Nuclear Physics, Osaka University)

Presenter: HIRAGUCHI, Atsuki Session Classification: Parallels Track A

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 92 A Virtual Tribute … / Report of Contributions Anomalous currents in a hadronic …

Contribution ID: 126 Type: Parallel contribution

Anomalous currents in a hadronic fluid Friday, 6 August 2021 14:50 (20 minutes)

The anomalous currents of two and three-flavor chiral nuclear matter in the presence ofchiral imbalance are computed, using recently developed methods based on differential geometry techniques exploiting generalized transgression, which facilitates the evaluation of both the equilibrium partition function and the covariant currents. The constitutive relations for both the broken and unbroken phase of the theory are studied and the out-of-equilibrium nondissipative transport coefficients determined. In the broken/confined phase, the vector covariant currents exhibit nondissipative chiral electric, magnetic, and vortical effects, the latter governed by chiral imbalance. This work is based on Ref. [1,2]. Other references are [3-4].

[1] J.L. Mañes, E. Megias, M. Valle, M.A. Vazquez-Mozo, JHEP 1912 (2019) 018. arXiv: 1910.04013[hep- th]. [2] J.L. Mañes, E. Megias, M. Valle, M.A. Vazquez-Mozo, JHEP 1811 (2018) 076. arXiv: 1806.07647[hep- th]. [3] K. Fukushima and K. Mameda, Phys. Rev. D86 (2012) 071501, arXiv: 1206.3128. [4] T. Brauner and H. Kolesova , Nucl. Phys. B945 (2019) 114676. arXiv:1809.05310.

Primary author: Dr MEGIAS, Eugenio (University of Granada) Co-authors: Prof. MAÑES, Juan Luis (University of the Basque Country UPV/EHU); Prof. VALLE, Manuel (University of the Basque Country UPV/EHU); Prof. VAZQUEZ-MOZO, Miguel Angel (Univer- sity of Salamanca)

Presenter: Dr MEGIAS, Eugenio (University of Granada) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 93 A Virtual Tribute … / Report of Contributions The scalar glueball from BESIII dat…

Contribution ID: 127 Type: Parallel contribution

The scalar glueball from BESIII data on radiative J/ψ decays Friday, 6 August 2021 14:50 (20 minutes)

rest at LEAR, the CERN-Munich multipoles for ππ elastic scattering, the S-wave from BNL data 0 0 ′ on ππ scattering into KSKS, and from GAMS data on ππ → π π , ηη, and ηη . The analysis reveals the existence of ten scalar isoscalar resonances. The resonances can be grouped into two classes: resonances with a large SU(3) singlet component and those with a large octet component. Their production of isoscalar resonances with a large octet component is suppressed in radiative J/ψ decays. However, in a limited mass range centered at 1850\,MeV, these mesons are produced abundantly. Mainly-singlet scalar resonances are produced over the full mass range but with larger intensity at 1850\,MeV. The total scalar isoscalar yield in radiative decays into scalar mesons shows a clear peak which is interpreted as the scalar glueball of lowest mass.

Primary author: KLEMPT, Eberhard (university of Bonn) Presenter: KLEMPT, Eberhard (university of Bonn) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 94 A Virtual Tribute … / Report of Contributions Modeling φ-meson production in s …

Contribution ID: 129 Type: Parallel contribution

Modeling φ-meson production in small collision systems observed by PHENIX Wednesday, 4 August 2021 17:30 (15 minutes)

Hadron production measurement in small collision systems (such as p+Al, p+Au, d+Au, 3He+Au) may allow to explore the minimal conditions for the quark-gluon plasma formation. Such research has become particularly crucial with the observation of the light hadrons collective behavior in small collision systems. Among the large variety of light hadrons, φ-meson is of particular interest since its production is sensitive to the presence of the quark-gluon plasma formation signatures. To interpret the nuclear modification effects and to study the process of the possible quark-gluon plasma formation from different perspectives the comparisons with theoretical model predictions are needed. Current report presents the comparison of the obtained experimental results on φ- √ 3 meson production in small collision systems (p+Al, p+Au, d+Au, He+Au) at sNN = 200 GeV to default and string melting versions of the AMPT model and PYTHIA 8.3/Angatyr model predictions. The results suggest that system volume and lifetime in p+Au, d+Au, and 3He+Au collisions are sufficient for the small quark-gluon plasma droplet formation, whereas p+Al collisions are well described in the absence of hot and dense matter effects.

Primary authors: Mrs MITRANKOVA,Mariia (Peter the Great St.Petersburg Polytechnic University (SPbPU)); LARIONOVA, Daria (Peter the Great St.Petersburg Polytechnic University (SPbPU)) Co-authors: Prof. BERDNIKOV, Yaroslav A. (Peter the Great St. Petersburg Polytechnic Univer- sity); Mr MITRANKOV, Iurii (Peter the Great St.Petersburg Polytechnic University (SPbPU)); Dr KO- TOV, Dmitry (Peter the Great St.Petersburg Polytechnic University (SPbPU)); Dr BERDNIKOV, Alexan- der (Peter the Great St.Petersburg Polytechnic University (SPbPU))

Presenter: Mrs MITRANKOVA,Mariia (Peter the Great St.Petersburg Polytechnic University (SPbPU))

Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 95 A Virtual Tribute … / Report of Contributions Short-distance constraints for HLb …

Contribution ID: 130 Type: Parallel contribution

Short-distance constraints for HLbL in muon g-2 Thursday, 5 August 2021 10:35 (20 minutes)

Model-independent short-distance constraints allow for a reduction of theoretical uncertainties associated to the analytic evaluation of Hadronic Light by Light contributions to muon g-2. In this talk we focus on the region where the three loop virtualities are large. Even when the fourth photon leg is soft, we show how a precise Operator Product Expansion can be applied inthat region. The leading contribution is found to be given by the quark loop, while the evaluationof both gluonic and power corrections show how the expansion is well behaved at relatively low energies, where significant contributions to muon g-2 remain. Numerical values for them arealso presented.

Primary authors: RODRIGUEZ-SANCHEZ, Antonio (IJCLab); BIJNENS, Johan (Lund Univer- sity); HERMANSSON-TRUEDSSON, Nils (Universität Bern); LAUB, Laetitia (Universität Bern) Presenter: RODRIGUEZ-SANCHEZ, Antonio (IJCLab) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 96 A Virtual Tribute … / Report of Contributions Sp(4) gauge theories and beyond t …

Contribution ID: 131 Type: Parallel contribution

Sp(4) gauge theories and beyond the standard model physics Tuesday, 3 August 2021 09:20 (20 minutes)

Sp(4) gauge theory with two fundamental and three antisymmetric fermion flavours is a template for beyond the standard model strong interactions that can give rise to a composite Higgs boson through the breaking of the global fundamental flavour symmetry and at the same time to a partial composite top quark state that explains why the observed mass of the latter particle is at the electroweak scale. Partial top compositeness results from the mixing of the standard model top quark with a chimera baryon, i.e. a baryonic state formed with two quarks in the fundamental and one quark in the antisymmetric representation. A necessary ingredient for partial top compositeness is the generation of a large anomalous dimension for the chimera baryon. Lattice gauge theory can be used as a framework to study non-perturbatively these phenomena, in order to verify their viability beyond semi-quantitative arguments. After a brief review of the relevant analytic con- siderations, in this talk, I will discuss our recent numerical calculations for the target Sp(4) model, presenting results for the meson spectrum and for the chimera baryon.

Primary author: LUCINI, Biagio (Professor) Co-authors: LIN, C,-J. David; VADACCHINO, Davide; HONG, Deog Ki; BENNETT, Ed; LEE, Jong-Wan; PIAI, Maurizio; MESITI, Michele; XIAO, Paul Presenter: LUCINI, Biagio (Professor) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 97 A Virtual Tribute … / Report of Contributions Semi-inclusive decay of heavy qua …

Contribution ID: 132 Type: Parallel contribution

Semi-inclusive decay of heavy quarkonium hybrids into quarkonium in the EFT framework Thursday, 5 August 2021 09:40 (20 minutes)

In order to understand the nature of the XYZ particles, theoretical predictions of the various decay modes of the XYZ measured by experiments are essential. In this work, we focus on the decay of heavy quarkonium hybrids. We study semi-inclusive decays of heavy quarkonium hybrids into traditional quarkonium in the EFT framework. We found that our numerical results of the decay rates are different from previous studies. We also develop a calculation framework in whichthe theoretical uncertainty can be systematically improved.

Primary authors: LAI, Wai Kin; BRAMBILLA, Nora (Technical University Munich); VAIRO, An- tonio; MOHAPATRA, Abhishek (TUM) Presenter: LAI, Wai Kin Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 98 A Virtual Tribute … / Report of Contributions Hidden-charm pentaquarks with …

Contribution ID: 133 Type: Parallel contribution

Hidden-charm pentaquarks with color-octet substructure in QCD Sum Rules Friday, 6 August 2021 14:50 (20 minutes)

We study the hidden-charm pentaquark states udscc¯ with spins 1/2, 3/2, and 5/2 within the QCD sum-rule approach. We construct the currents for the particular configuration of the pentaquark states that consist of the flavor singlet three-quark cluster uds of spins 1/2 and 3/2 and the two- quark cluster cc¯ of spin 1, where both clusters are in a color-octet state. From the QCD sum rules, obtained by the operator product expansion up to dimension-10 condensates, we have extracted masses for the pentaquark states udscc¯ and udcuc¯.

Primary author: Dr PIMIKOV, Alexandr Presenter: Dr PIMIKOV, Alexandr Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 99 A Virtual Tribute … / Report of Contributions A brief review of the anomalous m …

Contribution ID: 134 Type: Parallel contribution

A brief review of the anomalous magnetic moment of the muon (theory) Thursday, 5 August 2021 10:10 (25 minutes)

In this talk I will provide a brief review of the different results and approaches used in estimating the contributions to the anomalous magnetic moment of the muon, with emphasis on the hadronic contributions. The presentation will follow the review released by the Muon g-2 Theory Initiative.

Primary author: DELLA MORTE, Michele (University of Southern Denmark, IMADA and CP3)

Presenter: DELLA MORTE, Michele (University of Southern Denmark, IMADA and CP3) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 100 A Virtual Tribute … / Report of Contributions Double heavy baryons in Born- …

Contribution ID: 135 Type: Parallel contribution

Double heavy baryons in Born-Oppenheimer EFT Tuesday, 3 August 2021 09:40 (20 minutes)

We apply the recently proposed nonrelativistic EFT framework for double heavy hadrons to the double heavy baryon case. The EFT is build from NRQCD by incorporating the adiabatic expansion between the light quark and the heavy quark pair. At leading order the EFT reduces to the Born-Oppenheimer approximation. The Born-Oppenheimer potentials are obtained from available lattice QCD data. We go beyond the leading order by incorporating the heavy quarkspin and angular momentum operators. The corresponding potentials are obtained from their Wilson loop matching expressions by computing these in the short and long distances and interpolating the results for the intermediate region. In the short distance this is done using the multipole expansion. For the long distance we have developed an Effective String Theory with a light fermion constrained to the be in the flux tube string. Several free parameters are obtained by comparing with the spin splittings of double charm baryon lattice data and then used to predict double bottom baryon as well as excited double charm states.

Primary author: TARRÚS, Jaume (IFAE) Presenter: TARRÚS, Jaume (IFAE) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 101 A Virtual Tribute … / Report of Contributions Machine learning for Lattice QCD

Contribution ID: 139 Type: Parallel contribution

Machine learning for Lattice QCD Friday, 6 August 2021 16:20 (20 minutes)

In this talk, we introduce machine learning techniques for lattice QCD. Lattice QCD is one ofthe most successful methodologies of quantum field theory, which provides us quantitative values of QCD. On the other hand, machine learning enables us to treat big structured data. In particular, neural networks are widely used since it has universal approximation property while it cannot be exact. It seems that machine learning with lattice QCD is not match. We discuss exact waysto use machine learning in lattice QCD. Especially, we will introduce treatment of gauge symmetry in the neural network.

Primary author: Dr AKIO, Tomiya (Riken/BNL) Presenter: Dr AKIO, Tomiya (Riken/BNL) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 102 A Virtual Tribute … / Report of Contributions NNbar interaction from chiral effe …

Contribution ID: 140 Type: Parallel contribution

NNbar interaction from chiral effective field theory and its application to neutron-antineutron oscillations Thursday, 5 August 2021 09:00 (25 minutes)

Recently, we established an NN¯ potential within chiral effective field theory [1] which is fitted to up-to-date NN¯ phase shifts and inelasticities provided by a recently published phase-shift analysis of available pp¯ scattering data [2]. The quality of the description of those phase shifts but also of pp¯ observables will be discussed. As an application of this interaction neutron-antineutron oscillations in the deuteron are considered [3]. In particular, results for the deuteron lifetime will be presented, evaluated in terms of the free-space n − n¯ oscillation time, utilizing that NN¯ potential together with an NN interaction likewise derived within chiral effective field theory.

[1] Ling-Yun Dai, J. Haidenbauer, U.-G. Meißner, JHEP 07 (2017) 078. [2] D. Zhou, R.G.E. Timmermans, Phys.Rev.C 86 (2012) 044003. [3] J. Haidenbauer, U.-G. Meißner, Chin.Phys.C 44 (2020) 033101.

Primary author: HAIDENBAUER, Johann Presenter: HAIDENBAUER, Johann Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 103 A Virtual Tribute … / Report of Contributions The multiple-charm hierarchy in t…

Contribution ID: 141 Type: Parallel contribution

The multiple-charm hierarchy in the Statistical Hadronization Model Friday, 6 August 2021 15:15 (15 minutes)

In relativistic nuclear collisions the production of hadrons with light (u,d,s) quarks is quantitatively described in the framework of the Statistical Hadronization Model (SHM). Since charm quarks are dominantly produced in initial hard collisions but interact strongly in the hot fireball, charmed hadrons can be incorporated into the SHM by treating charm quarks as ‘impurities’ with thermal distributions, with the total charm content of the fireball fixed by the measured open charm cross section. We demonstrate that this way the measured multiplicities of single charm hadrons in Pb- Pb collisions at LHC energies can be well described with the same thermal parameters as for (u,d,s) hadrons. Furthermore, transverse momentum distributions are computed in a hydrodynamic approach also incorporating resonance decays. The approach is extended to lighter collision systems down to O-O and includes doubly- and triply-charmed hadrons. We show predictions for production probabilities of such states exhibiting a characteristic and rather spectacular enhancement hierarchy.

Primary authors: MAZELIAUSKAS, Aleksas (Heidelberg University/CERN); ANDRONIC, An- ton; BRAUN-MUNZINGER, Peter (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE)); STACHEL, Johanna; REDLICH, Krzysztof (University of Wroclaw); KOEHLER, Markus (University Heidelberg); VISLAVI- CIUS, Vytautas (Niels Bohr Institute, DK)

Presenters: MAZELIAUSKAS, Aleksas (Heidelberg University/CERN); VISLAVICIUS, Vytautas (Niels Bohr Institute, DK) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 104 A Virtual Tribute … / Report of Contributions Quantifying theoretical uncertaint …

Contribution ID: 143 Type: Parallel contribution

Quantifying theoretical uncertainties: Dark Matter direct detection observables Tuesday, 3 August 2021 09:00 (25 minutes)

What is the nature of so-called Dark Matter, and does it interact with regular matter except through gravity? For example, direct detection experiments aim to answer this question. Propagating measurements (or constraints) to the fundamental theory requires bridging several scales—from target nucleus to individual nucleons to the level of quarks & gluons and beyond. However, the sheer number of parameters in model-independent descriptions of DM and uncertainties associated with bridging the scales make it difficult to fully quantify uncertainties from theory to experiment. This talk exemplifies challenges associated with propagating uncertainties, focusing on the description of DM scattering off light-nuclei using chiral perturbation theory in a Bayesian context.

Primary authors: Dr KÖRBER, Christopher (Ruhr-University Bochum); Dr DE VRIES, Jordy (In- stitute for Theoretical Physics Amsterdam); Dr NOGGA, Andreas (FZ Juelich) Presenter: Dr KÖRBER, Christopher (Ruhr-University Bochum) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 105 A Virtual Tribute … / Report of Contributions Nuclear-Physics Multi-messenger …

Contribution ID: 144 Type: Parallel contribution

Nuclear-Physics Multi-messenger Constraints on the Equation of State of Neutron Stars Monday, 2 August 2021 17:20 (20 minutes)

LA-UR-21-25112 - Neutron stars contain the largest reservoirs of degenerate fermions, reaching the highest densities we can observe in the cosmos, and probe matter under conditions that cannot be recreated in terrestrial experiments. Throughout the Universe, a large number of high-energy, cataclysmic astrophysical collisions of neutron stars are continuously occurring. These collisions provide an excellent testbed to probe the properties of matter at densities exceeding the density inside atomic nuclei, are an important site for the production of elements heavier than iron, and allow for an independent measurement of the expansion rate of our Universe.

To understand these remarkable events, reliable nuclear-physics input is essential. In this talk, I will explain how to use quantum many-body calculations employing interactions from chiral effective field theory to provide a consistent and systematic approach to neutron-star matterwith controlled theoretical uncertainties. I will present nuclear-physics predictions for the equation of state of neutron stars, and discuss how multi-messenger observations of binary neutron-star mergers can be used to further elucidate the properties of matter under extreme conditions.

Primary author: TEWS, Ingo (Los Alamos National Laboratory) Presenter: TEWS, Ingo (Los Alamos National Laboratory) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 106 A Virtual Tribute … / Report of Contributions Machine learning regression and e …

Contribution ID: 145 Type: Parallel contribution

Machine learning regression and error quantification for lattice QCD Monte Carlo observables Wednesday, 4 August 2021 17:00 (20 minutes)

In lattice QCD simulations, a large number of observables are calculated on each MonteCarlo sample of gauge fields, and their statistical fluctuations are correlated with each other as theyshare the same background gauge field. By exploiting the correlation, a machine learning regression model can be trained to predict the values of the computationally expensive observables from the values of the computationally cheap observables for each Monte Carlo sample of the gauge field. I will present the machine learning algorithm and its applications to the prediction of lattice QCD observables and discuss the bias correction and error quantification procedure of the machine learning predictions on statistical data.

Primary author: YOON, Boram (Los Alamos National Laboratory) Co-authors: Dr BHATTACHARYA, Tanmoy (Los Alamos National Laboratory); Dr GUPTA, Rajan (Los Alamos National Laboratory)

Presenter: YOON, Boram (Los Alamos National Laboratory) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 107 A Virtual Tribute … / Report of Contributions Electric dipole moment of light nu …

Contribution ID: 146 Type: Parallel contribution

Electric dipole moment of light nuclei in χEFT Monday, 2 August 2021 17:25 (25 minutes)

CP -violating interactions at quark level generate CP -violating nuclear forces which could be revealed by looking at the presence of a permanent nuclear electric dipole moments. Within the framework of chiral effective field theory and thanks to the modern ab − initio techniques, it is possible to perform realistic calculation for the electric dipole moment of the light nuclei. In this work we present the calculation of the electric dipole moments of 2H, 3He and 3H discussing the systematic errors introduced by the truncation of the chiral expansion. The CP -violating nucleon- nucleon and three-nucleon potential up to next-to-next-to leading order (N2LO) derivation will be also discussed. Moreover, we introduce some recent renormalization argument which indicates that a promotion of the short-distance operator to leading-order is needed to have a consistent picture of the CP -violating nuclear forces.

Primary author: GNECH, Alex (JLAB) Co-authors: Dr DE VRIES, Jordy (Institute for Theoretical Physics Amsterdam); SHAIN, Sachin (Umass Amherst); VIVIANI, Michele (INFN Pisa) Presenter: GNECH, Alex (JLAB) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 108 A Virtual Tribute … / Report of Contributions A theoretical analysis of the semil …

Contribution ID: 147 Type: Parallel contribution

A theoretical analysis of the semileptonic decays η(′) → π0l+l− and η′ → ηl+l− Thursday, 5 August 2021 10:30 (20 minutes)

A complete theoretical analysis of the C-conserving semileptonic decays η(′) → π0l+l− and η′ → ηl+l− (l = e or µ) is carried out within the framework of the Vector Meson Dominance (VMD) model. An existing phenomenological model is used to parametrise the VMD coupling constants and the associated numerical values are obtained from an optimisation fit to V → P γ and P → V γ radiative decays (V = ρ0, ω, ϕ and P = π0, η, η′). The decay widths and dilepton energy spectra for the two η → π0l+l− processes obtained using this approach are compared and found to be in good agreement with other results available in the published literature. Theoretical predictions for the four η′ → π0l+l− and η′ → ηl+l− decay widths and dilepton energy spectra are calculated and presented for the first time in this work. Finally, the signature of CP violating operators from the SMEFT on experimental observables is investigated and quantified for the l = µ case.

Primary authors: ROYO, Emilio (Universitat Autónoma de Barcelona); Dr ESCRIBANO, Rafel (Universitat Autònoma de Barcelona)

Presenter: ROYO, Emilio (Universitat Autónoma de Barcelona) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 109 A Virtual Tribute … / Report of Contributions Light cone dsitribution amplitudes …

Contribution ID: 148 Type: Parallel contribution

Light cone dsitribution amplitudes from lattice QCD Tuesday, 3 August 2021 09:00 (20 minutes)

I will discuss recent lattice calculations of Gegenbauer moments of twist-two light cone distribution amplitudes (LCDAs) of the RQCD collaboration. There has been a lot of progress, in particular regarding taking the continuum limit and the matching to the modified minumal subtraction scheme. LCDAs play an important role in the physics of exclusive processes.

Primary author: BALI, Gunnar (Universität Regensburg) Presenter: BALI, Gunnar (Universität Regensburg) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 110 A Virtual Tribute … / Report of Contributions Holographic QCD in the NICER era

Contribution ID: 149 Type: Parallel contribution

Holographic QCD in the NICER era Thursday, 5 August 2021 09:20 (20 minutes)

Holographic techniques are particularly fit to analyzing matter at extreme conditions whereQCD matter is strongly coupled. Combining predictions of the holographic model with state-of-the-art effective field theory models of nuclear matter, I construct a family of feasible “hybrid” equations of state which cover both the quark matter and nuclear matter phases. The model predicts, among other things, that the NICER’s radius measurement is fully consistent with the absence of quark matter inside massive neutron stars.

Primary authors: JOKELA, Niko (University of Helsinki); JÄRVINEN, Matti (APCTP); REMES, Jere (University of Helsinki)

Presenter: JOKELA, Niko (University of Helsinki) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 111 A Virtual Tribute … / Report of Contributions Crystalline phases in dense matter

Contribution ID: 150 Type: Parallel contribution

Crystalline phases in dense matter Friday, 6 August 2021 14:30 (20 minutes)

I will discuss the properties of some spatially inhomogeneous phases in hadronic matter at finite densities

Primary author: CARIGNANO, Stefano (ICE) Presenter: CARIGNANO, Stefano (ICE) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 112 A Virtual Tribute … / Report of Contributions Deep Reinforcement Learning bas …

Contribution ID: 151 Type: Parallel contribution

Deep Reinforcement Learning based numerical analytic continuation of one-loop diagrams Thursday, 5 August 2021 09:40 (20 minutes)

Calculating analytic properties of Euclidean propagators is a demanding task, in particular if one considers non-perturbative approaches, such as Dyson-Schwinger equations. At the same time, once calculated in the complex domain, these correlators provide valuable insights into various properties associated with the proagating degree of freedom, and can serve as input to bound state equations. In order to compute those amplitudes in the complex domain, the integration path of the radial component of the loop momentum in the self energy has to be deformed away from the real axis in order to avoid non-analyticities such as poles and/or cuts. While in perturbative settings such deformations can be found manually, this is not feasible when it comes to iterative approaches applied to solve self-consistent integral equations. Utilizing the powerful machinery of Deep Reinforcement Learning, we demonstrate that an autonomous agent can be trained to perform such contour deformations. With our study we provide a proof of principle that such an agent could be deployed in a non-perturbative, iterative setup to compute analytic properties through suitably and automatically deformed integral contours.

Primary author: WINDISCH, Andreas (Department of Physics, Washington University in St. Louis)

Co-authors: GALLIEN, Thomas (Silicon Austria Labs, Graz Austria); SCHWARZLMUELLER,Christo- pher (Silicon Austria Labs, Graz, Austria)

Presenter: WINDISCH, Andreas (Department of Physics, Washington University in St. Louis)

Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 113 A Virtual Tribute … / Report of Contributions Quarkonia dynamics in the QGP w…

Contribution ID: 152 Type: Parallel contribution

Quarkonia dynamics in the QGP with open quantum systems Friday, 6 August 2021 16:25 (15 minutes)

In recent years, a significant theoretical effort has been made towards a dynamical description of quarkonia inside the Quark-Gluon Plasma (QGP), using the open quantum systems formalism. In this framework, one can get a real-time description of a quantum system (here the quarkonium) in interaction with a thermal bath (the QGP) by integrating out the bath degrees of freedom and studying the system reduced density matrix. We investigate the real-time dynamics of a correlated heavy quark-antiquark pair inside the QGP using a quantum master equation previously derived from first QCD principles in [1]. The full equation is directly resolved in 1D to lessen computing costs and is used for the first time to gain insight on the dynamics in both a static and evolving medium following a Björken-like temperature evolution. The role of color degrees of freedom will be studied by comparing the case ofaQED and QCD plasma. Several parametrizations will be explored, by modifying the initial state (color state of the pair, initial excited state…) or the complex potential used.

[1]-J. P. Blaizot and M. A. Escobedo, Quantum and classical dynamics of heavy quarks in aquark- gluon plasma, J. High Energy Phys. 06 (2018) 034.

Primary authors: DELORME, Stéphane (Subatech); GOSSIAUX, Pol (SUBATECH); GOUSSET, Thierry (Subatech); KATZ, Roland (Subatech) Presenter: DELORME, Stéphane (Subatech) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 114 A Virtual Tribute … / Report of Contributions Quantum Monte Carlo calculation …

Contribution ID: 154 Type: Parallel contribution

Quantum Monte Carlo calculation of the Fermi velocity renormalization in graphene: a test of convergence for perturbative series Friday, 6 August 2021 15:10 (20 minutes)

Suspended graphene provides an example of strongly correlated chiral fermions in 2+1D, and the logarithmic renormalization of the Fermi velocity in the infrared limit is one of the most prominent consequences of electron-electron interaction. For the first time, we could directly reproduce this effect in fully non-perturbative Quantum Monte Carlo (QMC) calculations using aslarge 102x102 lattices, which gave us access to the scales approaching those of experiments onreal graphene samples. We compared our QMC results with experiment and demonstrated the agreement if the finite-temperature corrections and the screening of the short-range electron-electron interactions by higher bands are taken into account. These results, now validated by experiment, are subsequently compared with multi-loop perturbative calculations made within the Lattice Per- turbation Theory (LPT) and in continuum QED. We demonstrate the importance of both lattice- scale physics and diagrammatic corrections beyond Random Phase Approximation for the quantitative description of the Fermi velocity renormalization. We also discuss the finite-temperature corrections, which appear to be of the opposite sign in perturbative series and in non-perturbative QMC signaling about possible breakdown of perturbation theory in strongly-correlated QED.

Primary authors: ULYBYSHEV, Maksim (University of Würzburg); ASSAAD, Fakher; Dr WIN- TEROWD, Christopher (Johann Wolfgang Goethe-Universita ̈t Frankfurt am Main); Dr ZAFEIROPOU- LOS, Savvas (Aix Marseille Univ, Universite ́ de Toulon, CNRS, CPT)

Presenter: ULYBYSHEV, Maksim (University of Würzburg) Session Classification: Parallels Focus Subsection

Track Classification: Focus Subsection: Emergent Gauge Fields and Chiral Fermions

September 28, 2021 Page 115 A Virtual Tribute … / Report of Contributions Electromagnetic finite-size effects …

Contribution ID: 155 Type: Parallel contribution

Electromagnetic finite-size effects beyond the point-like approximation Tuesday, 3 August 2021 09:50 (15 minutes)

In this talk we present a relativistic and model-independent method to analytically derive electromagnetic finite-size effects beyond the point-like approximation. Structure-dependence appears in terms of physical form-factors and derivatives thereof. The values of these physical quantities can be taken either from experimental measurements or auxiliary lattice calculations. We first apply our method to the meson mass, and then to leptonic decays of pions and kaons. The knowledge of the latter allows for improved numerical control in extractions of the relevant CKM-matrix elements from lattice QCD+QED.

Primary author: HERMANSSON-TRUEDSSON, Nils (Universität Bern) Co-authors: Dr PORTELLI, Antonin (University of Edinburgh); Dr HANSEN, Maxwell (University of Edinburgh); Dr DI CARLO, Matteo (University of Edinburgh) Presenter: HERMANSSON-TRUEDSSON, Nils (Universität Bern) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 116 A Virtual Tribute … / Report of Contributions A comparison of spectral reconstr …

Contribution ID: 156 Type: Parallel contribution

A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions Tuesday, 3 August 2021 09:45 (15 minutes)

We present a comparison among various methods used to extract the spectral functions of S- and P- wave meson states from non-zero temperature NRQCD correlation functions using the FASTSUM anisotropic lattice: the maximum likelihood, Backus Gilbert, and machine learning approaches. We review the common features that can be extracted by all methods and compare the results for masses and widths.

Primary author: SPRIGGS, Thomas (Swansea University) Co-authors: Prof. AARTS, Gert (Swansea University); Prof. ALLTON, Chris (Swansea Univer- sity); Prof. BURNS, Tim (Swansea Univeristy); Prof. JÄGER, Benjamin (University of Southern Den- mark); Prof. KIM, Seyong (Sejong University); LOMBARDO, Maria Paola (INFN); Mr OFFLER, Sam (Swansea University); Mr PAGE, Ben (Swansea University); Prof. RYAN, Sinead (Trinity College Dublin); Dr SKULLERUD, Jonivar (University of Ireland Maynooth) Presenter: SPRIGGS, Thomas (Swansea University) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 117 A Virtual Tribute … / Report of Contributions Charm CP Violation

Contribution ID: 158 Type: Parallel contribution

Charm CP Violation Friday, 6 August 2021 16:05 (25 minutes)

We discuss the theoretical implications of the recent discovery of CP violation in two-body charm decays at LHCb. The 2019 breakthrough follows the first discovery of CP violation in kaon decays in 1964 and in beauty decays in 2001. We illustrate that charm physics has the potential for the discovery of physics beyond the Standard Model and will teach us also more about non-perturbative low-energy QCD.

Primary author: Dr SCHACHT, Stefan (University of Manchester) Presenter: Dr SCHACHT, Stefan (University of Manchester) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 118 A Virtual Tribute … / Report of Contributions π0-η-η′ mixing from V →P γ and …

Contribution ID: 159 Type: Parallel contribution

π0-η-η′ mixing from V →P γ and P →V γ decays Wednesday, 4 August 2021 17:20 (20 minutes)

An enhanced phenomenological model that includes isospin-symmetry breaking is presented in this letter. The model is then used in a number of statistical fits to the most recent experimental data for the radiative transitions VP γ (V = ρ, K∗, ω, ϕ and P = π, K, η, η′) and estimations for the mixing angles amongst the three pseudoscalar states with vanishing third-component of 2 isospin are obtained. The quality of the performed fits is good, e.g. χmin/d.o.f = 1.9. The current experimental uncertainties allow for isospin-symmetry violations with a confidence level of approximately 2.5σ.

Primary authors: ESCRIBANO, Rafel (Univ. Autònoma de Barcelona); ROYO, Emilio (Universitat Autònoma de Barcelona)

Presenter: ESCRIBANO, Rafel (Univ. Autònoma de Barcelona) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 119 A Virtual Tribute … / Report of Contributions Quarkonium at Belle II

Contribution ID: 160 Type: Parallel contribution

Quarkonium at Belle II Thursday, 5 August 2021 09:00 (20 minutes)

The Belle II experiment at the SuperKEKB energy-asymmetric e+e− collider is an upgrade of the B factory facility at KEK in Tsukuba, Japan. The experiment began operation in 2019 and aims to record a factor of 50 times more data than its predecessor. Belle II is uniquely capable of studying the so-called “XYZ” particles: heavy exotic hadrons consisting of more than three quarks. First discovered by Belle, these now number in the dozens, and represent the emergence of a new cat- egory within quantum chromodynamics. We present recent results in new Belle II data, and the future prospects to explore both exotic and conventional quarkonium physics.

Primary authors: LIBBY, Jim (IIT Madras); TANIDA, Kiyoshi (Japan Atomic Energy Agency)

Presenter: TANIDA, Kiyoshi (Japan Atomic Energy Agency) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 120 A Virtual Tribute … / Report of Contributions New hints from exotic hadron spe …

Contribution ID: 161 Type: Parallel contribution

New hints from exotic hadron spectroscopy Friday, 6 August 2021 15:10 (20 minutes)

New data from BESIII and LHCb indicate the existence of two hidden charm, open strangeness resonances, dubbed Zcs(3985) and Zcs(4003). Their quasi-degeneracy reproduces, in the strange quark sector, the situation observed with X(3872) and Zc(3900) in the u,d quark sector. The Zcs resonances neatly fit into two broken SU(3)f symmetry nonets with JP = 1+ and opposite charge- conjugation. The mass of the missing element of the nonets is predicted. A short overview ofthe field will be given.

Primary author: POLOSA, Antonio (Sapienza University of Rome) Presenter: POLOSA, Antonio (Sapienza University of Rome) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 121 A Virtual Tribute … / Report of Contributions Nuclear Physics from D-branes in …

Contribution ID: 162 Type: Parallel contribution

Nuclear Physics from D-branes in string theory Monday, 2 August 2021 17:20 (20 minutes)

The connection between QCD and string theory is expected through the gauge/gravity correspon- dence. Particularly, it predicts that the baryons are discribed by D-branes. (This relation is analogous to the Skyrmion model where the baryons are obtained as solitons, since D-branes are also solitons in string theory.) In this talk, I will review how the D-branes behave as baryons, and discuss our attempt to obtain the nuclear states such as Deuteron and Helium from thebranes.

Primary author: MORITA, Takeshi (Shizuoka University) Presenter: MORITA, Takeshi (Shizuoka University) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 122 A Virtual Tribute … / Report of Contributions Probing the slope of the nuclear sy …

Contribution ID: 163 Type: Parallel contribution

Probing the slope of the nuclear symmetry energy with neutron star mergers Monday, 2 August 2021 17:40 (20 minutes)

The nuclear symmetry energy and its slope L are fundamental quantities describing the properties of dense matter around nuclear saturation. New measurements of the neutron-skin thickness of 208Pb have sparked recent interest in constraints on the slope of the symmetry energy, L, some of which can also be inferred from astrophysical systems, such as neutron star mergers.

In this talk, I will present the first systematic study of the impact of varying L on the post-merger evolution of a GW170817-like neutron star merger event. More specifically, I will discuss how different values of L affect the post-merger dynamics, what imprints L might leave in the post- merger gravitational wave signal and how the ejection of mass during the merger is affected by it.

Primary author: MOST, Elias Co-author: RAITHEL, Carolyn (Institute for Advanced Study) Presenter: MOST, Elias Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 123 A Virtual Tribute … / Report of Contributions Equation of state for holographic n …

Contribution ID: 164 Type: Parallel contribution

Equation of state for holographic nuclear matter as instanton gas Thursday, 5 August 2021 09:40 (20 minutes)

In this talk, we study a bottom-up holographic model where nuclear matter is realized as adilute gas of deformed instantons in six dimensions. In the probe approximation, we obtain a stiff equation of state for the nuclear matter, where the speed of sound is relatively large. Based onthe above observation, Tolman-Oppenheimer-Volkov (TOV) equation is solved numerically and then we find the mass-radius (M-R) relation, which is similar to that of quark matter. Thisisaresult specific to our holographic model.

Primary author: TACHIBANA, MOTOI Presenter: TACHIBANA, MOTOI Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 124 A Virtual Tribute … / Report of Contributions Physics of warped dimensions and …

Contribution ID: 165 Type: Parallel contribution

Physics of warped dimensions and continuum spectra Friday, 6 August 2021 15:20 (15 minutes)

In the context of warped five-dimensional models formulated to understand the physics beyond the Standard Model (SM), we will discuss the prediction of a continuum of Kaluza-Klein modes, on top of the SM zero modes, with different mass gaps for all particles: gauge bosons, fermions, graviton, radion and Higgs boson. In particular, we will study the existence of resonance effects in gauge bosons. The model can be considered as a modelization in five dimensions ofgapped unparticles. We compute the Green’s functions and show how they can modify some SM processes. We also discuss some applications for Dark Matter. This work is based on Refs. [1-2]. Other related references are [3-7].

[1] E. Megias, M. Quiros, “Gapped continuum Kaluza-Klein spectrum”, JHEP 1908 (2019) 166. arXiv:1806.04877 [hep-ph]. [2] E. Megias, M. Quiros, “Gapped continuum Kaluza-Klein spectrum”, arXiv:2146.10260 [hep-ph]. [3] L. Randall, R. Sundrum, “A Large mass hierarchy from a small extra dimension”, PRL 83 (1999) 3370-3373. [4] C. Csaki et al., “Continuum Naturalness”, JHEP 1903 (2019) 142. [5] C. Csaki et al., “Continuum Dark Matter”, arXiv:2105.07035 [hep-ph]. [6] G. Giudice et al, “Clockwork/Linear Dilaton: Structure and Phenomenology”, JHEP 1806 (2018) 009. [7] L. Randall and G. Servant, “Gravitational waves from warped space”, JHEP 0705 (2007), 054.

Primary author: MEGIAS, Eugenio (University of Granada) Co-authors: Prof. QUIROS, Mariano (Institut de Fisica d’Altes Energies (IFAE)); Prof. PEREZ-VIC- TORIA, Manuel (University of Granada)

Presenter: MEGIAS, Eugenio (University of Granada) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 125 A Virtual Tribute … / Report of Contributions |Vub| and |Vcb| determinations in t …

Contribution ID: 166 Type: Parallel contribution

|Vub| and |Vcb| determinations in the presence of New Physics effects. Friday, 6 August 2021 14:55 (25 minutes)

Motivated by the experimental patterns of lepton-universality breaking, we present a simple strategy based on ratios of leptonic and semileptonic B decays which decouple the CKM elements |Vub| and |Vcb| from the short-distance coefficients of (pseudo)-scalar, vector and tensor operator contributions associated with b → u and b → c transitions. We illustrate our strategy with different hypothetical model-independent scenarios and propose ratios for observables related with the b → u transitions with the aim of further constrain the possible new physics contributions. More- over our results derived when studying the b → c processes lead to predictions for yet unmeasured Bc leptonic decays. In all the cases we asses the values of |Vub| and |Vcb| as well.

Primary author: TETLALMATZI-XOLOCOTZI, Gilberto (Siegen University) Presenter: TETLALMATZI-XOLOCOTZI, Gilberto (Siegen University) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 126 A Virtual Tribute … / Report of Contributions Nucleon Charges from Lattice QCD

Contribution ID: 168 Type: Invited plenary presentation

Nucleon Charges from Lattice QCD Wednesday, 4 August 2021 17:25 (25 minutes)

The axial, scalar, and tensor charges of the nucleon are important observables needed tointerpret the results of many experiments and probe new physics. In this talk, I will present our recent lattice QCD calculations of the nucleon charges and discuss systematic uncertainties associated with the excited state contamination.

Primary author: YOON, Boram (Los Alamos National Laboratory) Co-authors: Dr BHATTACHARYA, Tanmoy (Los Alamos National Laboratory); Dr CIRIGLIANO, Vincenzo (Los Alamos National Laboratory); Dr GUPTA, Rajan (Los Alamos National Laboratory); HOFERICHTER, Martin (University of Bern); Dr JANG, Yong-Chull (Columbia University); Dr JOO, Balint (Oak Ridge National Laboratory); Prof. LIN, Huey-Wen (Michigan State University); Dr MEREGHETTI, Emanuele (Los Alamos National Laboratory); Dr MONDAL, Santanu (Los Alamos National Laboratory); Dr PARK, Sungwoo (Los Alamos National Laboratory); Dr WINTER, Frank (Jefferson Lab) Presenter: YOON, Boram (Los Alamos National Laboratory) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 127 A Virtual Tribute … / Report of Contributions Holographic approach of the spino …

Contribution ID: 169 Type: Parallel contribution

Holographic approach of the spinodal instability to criticality Friday, 6 August 2021 15:50 (15 minutes)

The spinodal instability is a prime signal for the first-order phase transition with negative speedof sound squared cs2 in the Quantum-ChromoDynamics phase diagram relevant for the RHIC energy scan. In recent studies [1,2], one evolves planar unstable black branes dual to a plasma with a first order phase transition subject to the spinodal instability. Near a critical point the interface between cold and hot stable phases, given by its width and surface tension, features a wider phase separation and a smaller surface tension. Far away from a critical point the formation time of the spinodal instability is reduced. Across softer and harder phase transitions, I demonstrate that mergers of equilibrated peaks and unstable plateaux lead to the preferred final single phase separated solution.

Refs: [1] https://arxiv.org/abs/2012.15687 [2] https://arxiv.org/abs/1905.12544

Primary author: Dr ATTEMS, Maximilian (CERN) Presenter: Dr ATTEMS, Maximilian (CERN) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 128 A Virtual Tribute … / Report of Contributions Strong coupling constant from mo …

Contribution ID: 170 Type: Parallel contribution

Strong coupling constant from moments of quarkonium correlators revisited Thursday, 5 August 2021 10:50 (20 minutes)

We revisit previous determination of the strong coupling constant from moments of quarkonium correlators in (2+1)-flavor QCD. We use previously calculated moments obtained with Highly Improved Staggered Quark (HISQ) action for five different quark masses and several lattice spacings. We perform a careful continuum extrapolations of the moments and from the comparison of these to the perturbative result we determine the n =3 QCD Lambda parameter, Λ f = 332 ± 17 ± 2(scale) MeV. This MS nf =5 corresponds to αs (µ = MZ ) = 0.1177(12).

Primary authors: PETRECZKY, Peter (BNL); WEBER, Johannes Heinrich (Michigan State Univer- sity)

Presenter: WEBER, Johannes Heinrich (Michigan State University) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 129 A Virtual Tribute … / Report of Contributions Highlights of gradient methods for …

Contribution ID: 172 Type: Parallel contribution

Highlights of gradient methods for simulation-based inference Friday, 6 August 2021 15:40 (20 minutes)

The simulation-based inference is a powerful approach that can deal with various challenges ranging from discovering hidden properties to simulation algorithms tuning and optimising device configurations. Such methods as evolutionary algorithms or Bayesian optimisation usually help to address those challenges. However, those approaches rely on assumptions that might not hold. Recently, a series of methods have been introduced to estimate black-box gradients that significantly speed up the optimisation process. This talk outlines such methods: REINFORCE-based, variational optimisation and surrogate generative model-based approaches. We provide theoretical intuition for those methods as well as practical illustrations of their strengths and weaknesses. Such comparison will help practitioners to understand those methods and apply them to the inference tasks of their domains of interest.

Primary author: USTYUZHANIN, Andrey (HSE University) Presenter: USTYUZHANIN, Andrey (HSE University) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 130 A Virtual Tribute … / Report of Contributions Relativistic density functional app …

Contribution ID: 173 Type: Parallel contribution

Relativistic density functional approach to unified description of quark-hadron matter Friday, 6 August 2021 16:00 (20 minutes)

A principal element of unified description of strongly interacting matter within the effective theories corresponds to hadronization of chiral quark models and incorporation of the confinement mechanism into them, manifesting the switching between hadron and quark degrees of freedom. Such an approach is formulated based on a relativistic density-functional motivated by the string- flip model. Quasiparticle treatment of quarks provides their suppression due to the divergenceof self-energy already at the mean-field level. Dynamical restoration of chiral symmetry is ensured by construction of the density functional. Beyond the mean field quark correlations in scalar and pseudoscalar channels are described within the Gaussian approximation. This explicitly introduces mesonic states into the model. Their contribution to the thermodynamic potential is analyzed within the Beth–Uhlenbeck framework. Modification of mesonic mass spectrum in the vicinity of (de)confinement is interpreted as the Mott transition.

Primary authors: IVANYTSKYI, Oleksii (University of Wroclaw); Prof. BLASCHKE, David (Uni- versity of Wroclaw); Dr MASLOV, Konstantin (National Research Nuclear University (MEPhI)) Presenter: IVANYTSKYI, Oleksii (University of Wroclaw) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 131 A Virtual Tribute … / Report of Contributions An effective field theory approach …

Contribution ID: 178 Type: Parallel contribution

An effective field theory approach to quarkonium at small transverse momentum Friday, 6 August 2021 14:50 (20 minutes)

I will present our work on the application of a combination of soft collinear effective theory and non-relativistic QCD to observables in quarkonium production and decay that are sensitive to soft gluon radiation, in particular measurements that are sensitive to small transverse momentum. Ultimately the aim is to use this approach to study quarkonium production in hadronic collisions at small transverse momentum. In my talk I will present the simpler scenario where a chi_c decays to light quarks followed by the fragmentation of those quarks to light hadrons. This example has all the elements of hadronic production: factorization involving transverse momentum dependent parton distribution, fragmentation functions and new quarkonium shape functions. It also has large logarithms both in invariant mass and rapidity that can be resumed.

Primary author: FLEMING, Sean (University of Arizona) Co-authors: Prof. MEHEN, Thomas (Duke University); Dr MAKRIS, Yiannis (INFN Sezione di Pavia)

Presenter: FLEMING, Sean (University of Arizona) Session Classification: Parallels Track C

Track Classification: C: Heavy quarks

September 28, 2021 Page 132 A Virtual Tribute … / Report of Contributions Azimuthal single- and double-spin …

Contribution ID: 179 Type: Parallel contribution

Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons Wednesday, 4 August 2021 17:40 (20 minutes)

A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive lepto- production of pions, charged kaons, protons, and antiprotons from transversely polarized protons is presented. These asymmetries include the previously published HERMES results on Collins and Sivers asymmetries, the analysis of which has been extended to include protons and antiprotons and also to an extraction in a three-dimensional kinematic binning and enlarged phase space. They are complemented by corresponding results for the remaining four single-spin and four double- spin asymmetries allowed in the one-photon-exchange approximation of the semi-inclusive deep- inelastic scattering process for target-polarization orientation perpendicular to the direction ofthe incoming lepton beam. Among those results, significant non-vanishing cos(−) modulations provide evidence for a sizable worm-gear (II) distribution, g1T. Most of the other modulations are found to be consistent with zero with the notable exception of large sin modulations for charged pions and positive kaons.

Primary author: HERMES COLLABORATION Presenter: HERMES COLLABORATION Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 133 A Virtual Tribute … / Report of Contributions Urca processes in neutron star me …

Contribution ID: 180 Type: Parallel contribution

Urca processes in neutron star mergers Wednesday, 4 August 2021 17:20 (20 minutes)

In this talk I will revisit modified and direct Urca processes in nuclear matter under conditions that we expect in neutron star mergers. Nuclear Urca processes have shown to be a potential significant source of bulk viscosity under merger conditions. Iwill explain how a correct relativistic treatment can alter the rates and the true beta equilibrium significantly, and present a new way to deal with in-medium effects for modified Urca.

Primary authors: HABER, Alexander (Washington University in Saint Louis, USA); ALFORD, Mark (Washington University, St. Louis); Dr HARRIS, Steven (University of Washington); Mr ZHANG, Ziyuan (Washington University in Saint Louis)

Presenter: HABER, Alexander (Washington University in Saint Louis, USA) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 134 A Virtual Tribute … / Report of Contributions A brief review of collectivity small …

Contribution ID: 181 Type: Invited plenary presentation

A brief review of collectivity small collision systems Wednesday, 4 August 2021 17:00 (30 minutes)

In this talk I will review the recent developments on the phenomenology and experimental searches for collectivity in small collision systems. For the phenomenology part I will focus on the hybrid approach based on the Color Glass Condensate (CGC) and Hydrodynamics (hydro) simulation [1]. For the experimental part my focus will be on the RHIC small system scan program [2]. I will discuss how the RHIC results indicate a dominant role of hydrodynamic final state effects on the observability of collectivity in small collision systems. However, the sub-dominant role of CGC driven correlations with an effect increasing with decreasing multiplicity is expected based on hybrid CGC+hydro calculations. I’ll briefly touch on an outstanding puzzle related to the measurements of triangular anisotropy coefficients from RHIC small system scan program. Where do we go from here ? Several promising directions have been identified. STAR with its extended pseudorapidity acceptance has just collected data on Oxygen-Oxygen collisions at RHIC. This exploratory program promises a better understanding of the role of geometry that drives collectivity in small systems. Recently, hints of collectivity has been observed in photo-nuclear processes by studying ultra-peripheral Pb+Pb collisions [3]. Interestingly, similar processes can be studied in photo-production limits of DIS e+p/A collisions at the future Electron Ion Collider.

[1] Schenke et al, Phys.Lett.B 803 (2020) 135322 [2] Aidala C et al. (PHENIX) Nature Phys. 15 214–220 [3] Aad G et al. (ATLAS), 2101.10771 [nucl-ex]

Primary author: TRIBEDY, Prithwish (Brookhaven National Laboratory) Presenter: TRIBEDY, Prithwish (Brookhaven National Laboratory) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 135 A Virtual Tribute … / Report of Contributions Recent progress in hadronic light- …

Contribution ID: 183 Type: Parallel contribution

Recent progress in hadronic light-by-light scattering Thursday, 5 August 2021 10:55 (20 minutes)

In recent years, significant progress in the calculation of the HLbL contribution to the anomalous magnetic moment of the muon has been achieved both with data-driven methods and in lattice QCD. In the talk I will discuss current developments aimed at controlling HLbL scattering at the level of 10%, as required for the final precision of the Fermilab E989 experiment.

Primary author: HOFERICHTER, Martin (University of Bern) Presenter: HOFERICHTER, Martin (University of Bern) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 136 A Virtual Tribute … / Report of Contributions Improving the cold-QM pressure v …

Contribution ID: 184 Type: Parallel contribution

Improving the cold-QM pressure via soft interactions at N3LO Thursday, 5 August 2021 09:00 (30 minutes)

Precise knowledge of the thermodynamic properties of zero-temperature, high-density quark matter (QM) can constrain the neutron-star-matter equation of state (EOS), even at much lower densities. However, current bounds on this QM EOS suffer from rather large uncertainties stemming from renormalization-scale dependence. In this talk, I will lay out how to improve the dense QM EOS beyond N2LO, and how to disentangle contributions to the pressure at N3LO. At this higher order, interactions involving the dynamically screened, long-wavelength (soft) gluon modes in loop corrections can contribute. I will present the fully soft contribution to the pressure stemming from self-interactions between these long-wavelength, screened gluons. This soft sector is well-behaved at high density, contrary to the case encountered at high temperatures, and this new contribution slightly decreases the renormalization-scale dependence of the EOS at high density.

Primary authors: GORDA, Tyler (TU Darmstadt); KURKELA, Aleksi (CERN and Univ. Sta- vanger); Dr PAATELAINEN, Risto (CERN); SÄPPI, Saga (ECT*); VUORINEN, Aleksi (University of Helsinki)

Presenter: GORDA, Tyler (TU Darmstadt) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 137 A Virtual Tribute … / Report of Contributions Non-perturbative investigations of …

Contribution ID: 185 Type: Parallel contribution

Non-perturbative investigations of gauge theories with adjoint and fundamental matter related to composite Higgs and supersymmetric gauge theories Tuesday, 3 August 2021 09:40 (20 minutes)

In this talk I will present the results of the first numerical investigation of a gauge theory with adjoint and fundamental fermion fields. It corresponds to the heavy scalar limit of supersymmetric QCD and has further applications in composite Higgs models and semiclassical investigations of confinement. I will discuss the interplay of the different fermion representations and relations to the numerical investigations of supersymmetric gauge theories.

Primary author: Dr BERGNER, Georg (FSU Jena) Presenter: Dr BERGNER, Georg (FSU Jena) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 138 A Virtual Tribute … / Report of Contributions Extending the LCSR method withi …

Contribution ID: 186 Type: Parallel contribution

Extending the LCSR method within QCD for pion TFF to low momenta. Theory and phenomenology Tuesday, 3 August 2021 09:20 (20 minutes)

We show that using renormalization-group summation to generate the QCD radiative corrections to the π − γ transition form factor, calculated within lightcone sum rules, leads the strong coupling free of Landau singularities while preserving the QCD form-factor asymptotics. This enables a reliable applicability of the LCSR method to momenta well2 below1~GeV . This way, one can use the new preliminary BESIII data with unprecedented accuracy below 1.5~GeV2 to fine tune the prefactor of the twist-six contribution. Using a combined fit to all available data below 3.1~GeV2, we are able to determine all nonperturbative scale parameters and a few Gegenbauer coefficients entering the calculation of the form factor. Employing these ingredients, we determine a pion distribution amplitude with conformal coefficients (b2, b4) that agree at the 1σ level with the data for 2 2 Q < 3.1~GeV and fulfill at the same time the lattice constraints on b2 at N3LO together with the constraints from QCD sum rules with nonlocal condensates.

Primary author: MIKHAILOV, SERGEY (BLTP, Joint Institute for Nuclear Research) Co-authors: PIMIKOV, Alexandr (BLTP, ); Prof. STEFANIS, Nicos Presenter: MIKHAILOV, SERGEY (BLTP, Joint Institute for Nuclear Research) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 139 A Virtual Tribute … / Report of Contributions Decays of an exotic 1-+ hybrid me …

Contribution ID: 187 Type: Parallel contribution

Decays of an exotic 1-+ hybrid meson resonance in QCD Monday, 2 August 2021 17:40 (20 minutes)

We present the first determination of the hadronic decays of the lightest exotic JPC=1-+ resonance in lattice QCD. Working with SU(3) flavor symmetry, where the up, down and strange-quark masses approximately match the physical strange-quark mass giving mπ∼700 MeV, we compute finite-volume spectra on six lattice volumes which constrain a scattering system featuring eight coupled channels. Analytically continuing the scattering amplitudes into the complex-energy plane, we find a pole singularity corresponding to a narrow resonance which shows relatively weak coupling to the open pseudoscalar–pseudoscalar, vector–pseudoscalar and vector–vector decay channels, but large couplings to at least one kinematically closed axial-vector–pseudoscalar channel. Attempting a simple extrapolation of the couplings to physical light-quark mass suggests a broad π1 resonance decaying dominantly through the b1π mode with much smaller decays into f1π, ρπ, η′π and ηπ. A large total width is potentially in agreement with the experimental π1(1564) candidate state observed in ηπ, η′π, which we suggest may be heavily suppressed decay channels.

Primary authors: DUDEK, Jozef (Jefferson Lab); DUDEK, Jozef (William & Mary / Jefferson Lab)

Presenters: DUDEK, Jozef (Jefferson Lab); DUDEK, Jozef (William & Mary / Jefferson Lab) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 140 A Virtual Tribute … / Report of Contributions Neutrinoless double beta decay wi …

Contribution ID: 188 Type: Parallel contribution

Neutrinoless double beta decay with light sterile neutrinos Monday, 2 August 2021 17:00 (25 minutes)

Search for neutrinoless double beta decay is one of the primary probes to understand the neutrino nature. Its discovery implies lepton-number violation, confirming the Majorana neutrino mass which is realized by introducing sterile neutrinos. The theoretical approach requires somewhat complicated processes connecting fundamental interactions to those at hadronic and nuclear levels. In this talk, I will discuss the systematic analyses of the neutrinoless double beta decay based on effective field theory including light sterile neutrinos.

Primary author: FUYUTO, Kaori (LANL) Presenter: FUYUTO, Kaori (LANL) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 141 A Virtual Tribute … / Report of Contributions The pion light-cone distribution a…

Contribution ID: 189 Type: Parallel contribution

The pion light-cone distribution amplitude from the pion electromagnetic form factor Tuesday, 3 August 2021 09:40 (20 minutes)

We suggest to probe the pion light-cone distribution amplitude, transforming the dispersion relation for the pion electromagnetic form factor into an equation between the spacelike form factor 2 Fπ(Q ) and the integrated modulus of the timelike form factor. 2 For Fπ(Q ), the QCD light-cone sum rule in terms of the pion light-cone distribution amplitudes is used. From this equation, employing the measured pion timelike form factor, it is possible to fit and/or constrain the Gegen- bauer moments of the pion twist-2 distribution amplitude. As an independent test of our approach, we compare the spacelike pion form factor obtained in two different ways: from the dispersion relation and from the light-cone sum rule with the measurement by the Jefferson Lab Fπ collaboration.

Primary author: KHODJAMIRIAN, Alexander (University of Siegen) Presenter: KHODJAMIRIAN, Alexander (University of Siegen) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 142 A Virtual Tribute … / Report of Contributions Present status of radiative and rare …

Contribution ID: 190 Type: Parallel contribution

Present status of radiative and rare kaon decays Tuesday, 3 August 2021 09:25 (25 minutes)

I will review recent developments in rare and radiative kaon decays from the theory side, with emphasis on those modes that are actively analyzed by the experimental collaborations.

Primary author: Dr CATA, Oscar (University of Siegen) Presenter: Dr CATA, Oscar (University of Siegen) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 143 A Virtual Tribute … / Report of Contributions Inhomogeneous pion condensed p …

Contribution ID: 191 Type: Parallel contribution

Inhomogeneous pion condensed phase hosting topologically stable baryons. Wednesday, 4 August 2021 17:40 (20 minutes)

We present the results concerning analytic (3+1)-dimensional inhomogeneous and topologically nontrivial pion systems hosting topologically stable baryons. This phase, relevant for the core of compact stars featuring a pion condensed core, is discussed within two-flavor leading order chiral perturbation theory.

Primary author: Dr MANNARELLI, Massimo (INFN) Presenter: Dr MANNARELLI, Massimo (INFN) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 144 A Virtual Tribute … / Report of Contributions TMD factorization and its applicat …

Contribution ID: 192 Type: Parallel contribution

TMD factorization and its applications to the LHC

I will briefly review the current status of transverse-momentum-dependent (TMD) factorization and related frameworks, focusing on its applicability at the LHC.

Primary author: GARCÍA ECHEVARRÍA, Miguel (Universidad de Alcalá) Presenter: GARCÍA ECHEVARRÍA, Miguel (Universidad de Alcalá) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 145 A Virtual Tribute … / Report of Contributions Special point and onset of deconfi …

Contribution ID: 193 Type: Parallel contribution

Special point and onset of deconfinement in the M-R diagram of neutron stars. Thursday, 5 August 2021 10:30 (20 minutes)

I present the results of a systematic investigation of the possible locations for the neutron star special point (SP), a unique feature of hybrid neutron stars in the mass-radius. The study is performed within the two-phase approach where the high-density (quark matter) phase is described by the constant-sound-speed (CSS) equation of state (EoS) and the nuclear matter phase around saturation density is varied from very soft (APR) to stiff (DD2 with excluded nucleon volume). In this study we demonstrate the invariance of the SP to the details of the onset of deconfinement (be it a 1st order phase transition or crossover interpolation construction). The utility of this unique feature of hybrid stars is explored by means of a derived relation between the SP mass and the maximum mass of non-rotating neutron stars, as well as possible implications in the context of GW170817 and the novel NICER measurement of PSR J0740+6620.

Primary author: CIERNIAK, Mateusz (University of Wrocław) Co-author: Prof. BLASCHKE, David (University of Wroclaw) Presenter: CIERNIAK, Mateusz (University of Wrocław) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 146 A Virtual Tribute … / Report of Contributions Jet quenching theory

Contribution ID: 195 Type: Parallel contribution

Jet quenching theory Thursday, 5 August 2021 10:10 (30 minutes)

I will give a brief review on the theory of jet quenching and discuss some recent progress toward measuring quark and gluon jet modification in heavy-ion collisions.

Primary author: BREWER, Jasmine (CERN) Presenter: BREWER, Jasmine (CERN) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 147 A Virtual Tribute … / Report of Contributions Light meson spectroscopy and exo …

Contribution ID: 196 Type: Parallel contribution

Light meson spectroscopy and exotics Friday, 6 August 2021 14:30 (20 minutes)

High statistics samples from modern experiments triggered an essential work on revisiting theoretical models and tools applied to analyze the resonance phenomena of QCD.

In this talk, I will discuss two exotic-resonance candidates, a1(1420) and π1(1600) cleared up over the last few years using data of the COMPASS experiment.

With our recent analysis [hep-ph:2006.05342], the a1(1420) candidate is concluded to be consistent with the manifestation of the Triangle Singularity (TS) in the coupled system of 3pi and KKpi. The TS mechanism, claimed to be responsible for the appearance of the several XYZ states inthe charmonium spectrum, is usually difficult to test due to unknown couplings and production rates. In contrast, the description of the a1(1420) is nearly-model independent due to the known pair-wise interaction of the light hadrons. It makes the a1(1420) the best test ground for our understanding of the TS, the fundamental field-theory phenomenon.

The pole of the π1(1600) resonance was established recently by the JPAC group in the analysis of η(′)π. I will present new work on relating the appearance of this exotic state to the exchange dynamics in η(′)π system showing the particle-force duality for the exotic state [hep-ph:2104.10646].

Primary author: MIKHASENKO, Mikhail (CERN) Presenter: MIKHASENKO, Mikhail (CERN) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 148 A Virtual Tribute … / Report of Contributions Holographic quarkyonic matter

Contribution ID: 197 Type: Parallel contribution

Holographic quarkyonic matter Friday, 6 August 2021 15:10 (20 minutes)

We point out a novel configurations in holographic QCD, allowing baryons to coexist with fundamental quarks. The resulting phase is a dual realization of quarkyonic matter, which is predicted to occur in QCD at a large number of colors, and possibly plays a role in real-world QCD as well. We find that holographic quarkyonic matter is chirally symmetric and that, for large baryon chemical potentials, it is energetically preferred over pure nuclear matter and over pure quark matter. Fi- nally, we also discuss recent findings about holographic baryonic matter with isospin asymmetry, including fully dynamically its interplay with pion condensation.

Primary author: KOVENSKY, Nicolas (IPhT - CEA - Paris, Saclay.) Co-author: SCHMITT, Andreas (University of Southampton) Presenter: KOVENSKY, Nicolas (IPhT - CEA - Paris, Saclay.) Session Classification: Parallels Track F

Track Classification: F: Nuclear and Astroparticle Physics

September 28, 2021 Page 149 A Virtual Tribute … / Report of Contributions Non-equilibrium attractor in high- …

Contribution ID: 198 Type: Parallel contribution

Non-equilibrium attractor in high-temperature QCD plasmas Monday, 2 August 2021 17:00 (30 minutes)

We establish the existence of a far-from-equilibrium attractor in weakly-coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from- equilibrium evolution is insensitive to certain features of the initial condition, including both the initial momentum-space anisotropy and initial occupancy. We find that this insensitivity extends beyond the energy-momentum tensor to the detailed form of the one-particle distribution function. Based on our results, we assess different procedures for reconstructing the full one-particle distribution function from the energy-momentum tensor along the attractor and discuss implications for the freeze-out procedure used in the phenomenological analysis of ultra-relativistic nuclear collisions.

Primary authors: KURKELA, Aleksi (CERN and Univ. Stavanger); ALMAALOL, Dekrayat (Kent State University); STRICKLAND, Michael (Kent State University) Presenter: ALMAALOL, Dekrayat (Kent State University) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 150 A Virtual Tribute … / Report of Contributions Three-pion scattering from lattice …

Contribution ID: 200 Type: Parallel contribution

Three-pion scattering from lattice QCD Monday, 2 August 2021 17:00 (20 minutes)

The majority of QCD states are unstable resonances that couple strongly to multi-particle states, with a significant fraction of these coupling to asymptotic three-particle states. Lattice QCD,being a framework that incorporates all dynamical coupling non-perturbatively, provides a promising pathway toward studying the excited states of the theory. Although challenging, lattice QCD calculations of systems composed of three-hadrons are finally being performed. In this talk, I present a calculation by the Hadron Spectrum Collaboration, Phys.Rev.Lett. 126:012001 (2021), which is the first to go from the lattice QCD correlation functions to the desired infinite-volume scattering amplitudes. I review outstanding challenges to study the low-lying resonances ofQCD that couple to three particles.

Primary author: BRICENO, Raul (ODU/JLab) Presenter: BRICENO, Raul (ODU/JLab) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 151 A Virtual Tribute … / Report of Contributions Excited states of Bottomonia in Q …

Contribution ID: 201 Type: Parallel contribution

Excited states of Bottomonia in QGP from lattice QCD Tuesday, 3 August 2021 09:00 (30 minutes)

Using non-relativistic QCD techniques on finite temperature lattice configurations, we will present results pertaining to the fate of the Bottom and anti-Bottom quarkonium states of Υ(1S), Υ(2S)and Υ(3S) in Quark-Gluon-Plasma (QGP). We will present results on how the mass and spectral widthof these states change with temperature. We will also show new results on how the finite temperature potential between a quark and anti-quark corroborate the results obtained for the bottomonium states.

Primary author: LARSEN, Rasmus Co-authors: MEINEL, Stefan (University of Arizona); PETRECZKY, Peter (BNL); MUKHERJEE, Swagato (Brookhaven National Laboratory)

Presenter: LARSEN, Rasmus Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 152 A Virtual Tribute … / Report of Contributions Hadron Structure in Lattice QCD: …

Contribution ID: 202 Type: Parallel contribution

Hadron Structure in Lattice QCD: Status and Challenges Wednesday, 4 August 2021 17:00 (25 minutes)

The quantitative understanding of hadron structure holds the key to the interpretation of current and future experiments in particle, hadron and nuclear physics, which provide crucial information for the search for New Physics. In this talk I review the status of lattice QCD calculations of structural properties of the nucleon, focussing on the determination of electromagnetic and axial form factors, calculations of the axial, scalar and tensor charges, as well as the determination of sigma-terms. A central issue for precision calculations of these quantities is control over excited state contributions that may cause a systematic bias in results.

Primary author: Prof. WITTIG, Hartmut (University of Mainz and CERN) Presenter: Prof. WITTIG, Hartmut (University of Mainz and CERN) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 153 A Virtual Tribute … / Report of Contributions Studying properties of the deconfi …

Contribution ID: 203 Type: Parallel contribution

Studying properties of the deconfined medium in heavy-ion collisions with fluctuations observables Friday, 6 August 2021 15:40 (30 minutes)

Experimental measurements of multiplicity fluctuations are used to extract information about the properties of the quark-gluon plasma and transition to the hadron gas phase in heavy-ion collisions. In particular, the event-by-event fluctuations of conserved quantities within a fixed rapidity range can be related to thermodynamic properties of the medium, allowing for direct comparison to lattice QCD predictions, and used to explore the phase diagram of nuclear matter. In thistalk, the latest experimental results on multiplicity and net particle fluctuations from RHIC and the LHC will be presented and placed into context with recent theoretical developments, and future prospects will also be discussed.

Primary author: OHLSON, Alice (Lund University (SE)) Presenter: OHLSON, Alice (Lund University (SE)) Session Classification: Parallels Track D

Track Classification: D: Deconfinement

September 28, 2021 Page 154 A Virtual Tribute … / Report of Contributions RanBox: Anomaly Detection in th …

Contribution ID: 204 Type: Parallel contribution

RanBox: Anomaly Detection in the Copula Space Thursday, 5 August 2021 09:00 (20 minutes)

The unsupervised search for overdense regions in high-dimensional feature spaces, where locally high population densities may be associated with anomalous contaminations to an otherwise more uniform population, is of relevance to applications ranging from fundamental research to industrial use cases. Motivated by the specific needs of searches for new phenomena in particle collisions, we propose a novel approach that targets signals of interest populating compact regions of the feature space. The method consists in a systematic scan of subspaces of a standardized copulaof the feature space, where the minimum p-value of a hypothesis test of local uniformity is sought by gradient descent. We characterize the performance of the proposed algorithm and show its effectiveness in several experimental situations.

Primary author: DORIGO, Tommaso (INFN Padova) Presenter: DORIGO, Tommaso (INFN Padova) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 155 A Virtual Tribute … / Report of Contributions Unfolding by Folding: a Bayesian …

Contribution ID: 205 Type: Parallel contribution

Unfolding by Folding: a Bayesian resampling approach to the problem of matrix inversion without actually inverting any matrix Thursday, 5 August 2021 09:20 (20 minutes)

Matrix inversion problems are often encountered in experimental physics, and in particular in high-energy particle physics, under the name of unfolding. The true spectrum of a physical quantity isde- formed by the presence of a detector, resulting in an observed spectrum. If we discretize both the true and observed spectra into histograms, we can model the detector response via a matrix. Inferring a true spectrum starting from an observed spectrum requires therefore inverting the response matrix. Many methods exist in literature for this task, all starting from the observed spectrum and using a simulated true spectrum as a guide to obtain a meaningful solution in cases where the response matrix is not easily invertible. In this Manuscript, I take a different approach to the unfolding problem. Rather than inverting the response matrix and transforming the observed distribution into the most likely parent distribution in generator space, I sample many distributions in generator space, fold them through the original response matrix, and pick the generator-level distribution which yields the folded distribution closest to the data distribution. Regularization schemes can be introduced to treat the case where non-diagonal response matrices result in high-frequency oscillations of the solution in true space, and the introduced bias is studied. The algorithm performs as well as traditional unfolding algorithms in cases where theinverse problem is well-defined in terms of the discretization of the true and smeared space, and outperforms them in cases where the inverse problem is ill-defined—when the number of truth-space bins is larger than that of smeared-space bins. These advantages stem from the fact that the algorithm does not technically invert any matrix and uses only the data distribution as a guide to choose the best solution. The algorithm is also extended, in analogy to Bayesian approaches such as Metropolis Hastings, to a full description of the posterior distribution of each bin yield.

Primary author: VISCHIA, Pietro (Universite Catholique de Louvain (UCL) (BE))

September 28, 2021 Page 156 A Virtual Tribute … / Report of Contributions Unfolding by Folding: a Bayesian …

Presenter: VISCHIA, Pietro (Universite Catholique de Louvain (UCL) (BE)) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 157 A Virtual Tribute … / Report of Contributions AMBER: a new QCD facility a the …

Contribution ID: 207 Type: Parallel contribution

AMBER: a new QCD facility a the CERN SPS M2 beam line

AMBER is a newly proposed fixed-target experiment at the M2 beam line of the SPS, devoted to various fundamental QCD measurements, with a Proposal very recently approved by the CERN Research Board for a Phase-1 program and a Letter of Intent made public for a longer termpro- gram. Such an unrivalled installation would make the experimental hall EHN2 the site for a great variety of measurements to address fundamental issues of strong interactions in the medium and long- term future. The elastic muon-proton scattering process, using high-energy muons, is proposed as anovelap- proach to the longstanding puzzle of the proton charge radius. Such a measurement constitutes a highly-welcomed complementary approach in this area of world-wide activity. Operating with protons, the largely unknown antiproton production cross section can be measured, which constitutes important input for the upcoming activities in the Search for Dark Mat- ter. Especially the world-unique SPS M2 beam line, when operated with high-energy pions, can be used to shed light to the emergence of hadron masses. The origin of hadron masses is deeply connected to the parton dynamics, and how it differs in protons or mesons. A determination ofthe valence-quark PDF of the pion, through Drell-Yan production, would provide the needed sensitivity to the mechanism(s) responsible for the emergence of mass in QCD. For a longer-term program an upgrade of the M2 beam line with radio-frequency separation of kaon and antiproton beams of high energy and high intensity would allow for further unique opportunity to shed new light to the light meson structure, by exploring both kaon-induced Drell-Yan and direct photon production. The rich physics program planned at the AMBER experiment will be presented. World competition and possible timelines will be discussed.

Primary author: CHIOSSO, Michela (University of Torino and INFN) Presenter: CHIOSSO, Michela (University of Torino and INFN) Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 158 A Virtual Tribute … / Report of Contributions B anomalies

Contribution ID: 208 Type: Parallel contribution

B anomalies Friday, 6 August 2021 14:30 (25 minutes)

The concept of lepton universality, where the muon and tau particles are simply heavier copies of the electron, is a key prediction in the Standard Model (SM). In models beyond the SM, lepton universality can be naturally violated with new physics particles that couple preferentially to the second and third generation leptons. Over the last few years, several hints of lepton universality violation have been seen in both b->c and b->s semileptonic beauty decays. This presentation will review these anomalies and give an outlook for the near future. Other probes of NP in highly suppressed b-hadron decays will also be discussed.

Primary authors: RICCIARDI, Stefania; LHCB COLLABORATION; MADHAN MOHAN, Lakshan Ram (University of Bristol)

Presenter: MADHAN MOHAN, Lakshan Ram (University of Bristol) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 159 A Virtual Tribute … / Report of Contributions New approach for searching for C …

Contribution ID: 209 Type: Parallel contribution

New approach for searching for CP violation in charm sector in the LHCb experiment Friday, 6 August 2021 15:40 (25 minutes)

The existence of CP violation in the decays of strange and beauty mesons is very well established experimentally. On the contrary, CP violation in the decays of charmed particles has been elusive for a long time for the experimentalists and has been observed before for the first time in 2018 by the LHCb experiment. During the LHC Run 1 and Run 2, the LHCb collaboration has collected a huge samples with charm hadron decays, on a scale never seen before. These sample enable the most sensitive searches for CP violation ever performed. In the presentation, previous results from Run 1 will be reviewed and the innovative model-independent technique of searching for CP violation in charm baryon decays will be discussed and compared to other well-known methods such as \chi^2 test. A new technique is implemented and tested on a toy model that allowed the production of generated samples for different values of CP asymmetry. The LHCb proton-proton collision data, after appropriate selection procedure are tested as well. The offline, the detector asymmetries and other reconstruction effects will be discussed in detail. The performance ofthe χ2 method will be also demonstrated using data.

Primary authors: RICCIARDI, Stefania; LHCB COLLABORATION; RYŻKA, Jakub (AGH UST)

Presenter: RYŻKA, Jakub (AGH UST) Session Classification: Parallels Track E

Track Classification: E: QCD and New Physics

September 28, 2021 Page 160 A Virtual Tribute … / Report of Contributions Detector Reconstruction and Fast S …

Contribution ID: 210 Type: Parallel contribution

Detector Reconstruction and Fast Simulation in High-Energy Physics using Graph Generative Models Friday, 6 August 2021 16:00 (20 minutes)

Accurate and fast simulation of particle physics events is crucial for the high-energy physics community. Simulating particle interactions with the detector is both time consuming and computationally expensive. With its proton-proton collision energy of 13 TeV, the Large Hadron Collider is uniquely positioned to detect and measure the rare phenomena that can shape our knowledge of new interactions. The High-Luminosity Large Hadron Collider (HL-LHC) upgrade will put asig- nificant strain on the computing infrastructure and budget due to increased event rate and levelsof pile-up. The simulation of high-energy physics collisions needs to be significantly faster without sacrificing the physics accuracy. Modern machine learning approaches can offer faster solutions, while maintaining a high level of fidelity. We introduce a graph generative model that provides effective reconstruction of LHC events on the level of calorimeter deposits and tracks, pavingthe way for full detector level fast simulation.

Primary authors: Mr HARIRI, Ali; Mrs DYACHKOVA , Darya (Minerva Schools at KGI); Prof. GLEYZER, Sergei (University of Alabama )

Presenter: Mrs DYACHKOVA , Darya (Minerva Schools at KGI) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 161 A Virtual Tribute … / Report of Contributions Review of statistical practices in CMS

Contribution ID: 211 Type: Parallel contribution

Review of statistical practices in CMS Monday, 2 August 2021 17:00 (30 minutes)

The large collaborations in high-energy physics analyze a large amount of data on a daily basis.Dif- ferent practices have been consolidated and improved through the past decade. A brief overview of the most common statistical techniques used in searches for new physics and precision measurements is presented.

Primary author: MARINI, Andrea Carlo Presenter: MARINI, Andrea Carlo Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 162 A Virtual Tribute … / Report of Contributions Effect of Systematic Uncertainty E…

Contribution ID: 212 Type: Parallel contribution

Effect of Systematic Uncertainty Estimation onthe Muon g − 2 Anomaly Thursday, 5 August 2021 10:30 (20 minutes)

The statistical significance that characterizes a discrepancy between a measurement and theoretical prediction is usually calculated assuming that the statistical and systematic uncertainties are known. Many types of systematic uncertainties are, however, estimated on the basis of approximate procedures and thus the values of the assigned errors are themselves uncertain. Here the impact of the uncertainty {\it on the assigned uncertainty} is investigated in the context of the muon g − 2 anomaly. The significance of the observed discrepancy between the Standard Model prediction of the muon’s anomalous magnetic moment and measured values are shown to decrease substantially if the relative uncertainty in the uncertainty assigned to the Standard Model prediction exceeds around 30\%. The reduction in sensitivity increases for higher significance, so that establishing a 5σ effect will require not only small uncertainties butthe uncertainties themselves must be estimated accurately to correspond to one standard deviation.

Primary author: COWAN, Glen (Royal Holloway, University of London) Presenter: COWAN, Glen (Royal Holloway, University of London) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 163 A Virtual Tribute … / Report of Contributions Statistical methods at LHCb

Contribution ID: 213 Type: Parallel contribution

Statistical methods at LHCb Monday, 2 August 2021 17:30 (30 minutes)

An overview of common statistical methods and machine learning approaches deployed at the LHCb experiment will be discussed. Particular focus will be given to recent developments using novel techniques relevant to heavy flavour physics.

Primary author: KENZIE, Matthew (University of Warwick) Presenter: KENZIE, Matthew (University of Warwick) Session Classification: Parallels Track H

Track Classification: H. Statistical Methods for Physics Analysis in the XXI Century

September 28, 2021 Page 164 A Virtual Tribute … / Report of Contributions Dilaton chiral perturbation theory …

Contribution ID: 214 Type: Parallel contribution

Dilaton chiral perturbation theory and applications Wednesday, 4 August 2021 17:00 (20 minutes)

We review dilaton chiral perturbation theory (dChPT), the low-energy theory for the light sector of near-conformal, confining theories. dChPT accounts for the pions and the light scalar,and provides a systematic expansion in both the fermion mass and the distance to the conformal window. Unlike ChPT, dChPT predicts a large-mass regime in which the theory exhibits hyperscaling,while the expansion nevertheless remains systematic. We discuss applications to lattice data, presenting successes as well as directions for future work.

Primary author: GOLTERMAN, Maarten Presenter: GOLTERMAN, Maarten Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 165 A Virtual Tribute … / Report of Contributions First Results From the Fermilab M …

Contribution ID: 215 Type: Invited plenary presentation

First Results From the Fermilab Muon g-2 Experiment Thursday, 5 August 2021 11:30 (20 minutes)

The Muon g-2 Experiment (E989) at Fermi National Accelerator Lab- oratory (FNAL) has measured the muon anomalous precession frequency (a_μ) in its first physics run in 2018 with a precision of 0.46 parts per million. The anomalous precession frequency was measured using the intensity variation of positrons from the decay of polarized positive muons circulating around a storage ring. The magnetic field in the storage ring is actively and passively shimmed to be highlyuniform, and it is monitored using nuclear magnetic resonance probes that are calibrated in terms of the equivalent proton spin precession frequency in a spherical water sample. An ensemble of Muon Campus beamline, injection, and storage ring simulation packages were used to develop and test the systematic corrections and errors arising from beam dynamics. In June 2021, the experiment completed its fourth physics run. This talk will present an update on the most recent running periods and the plans for the future.

Primary author: VALETOV, Eremey (MSU / FNAL) Presenter: VALETOV, Eremey (MSU / FNAL) Session Classification: Round Table

Track Classification: E: QCD and New Physics

September 28, 2021 Page 166 A Virtual Tribute … / Report of Contributions Overview of the EIC project

Contribution ID: 216 Type: Invited plenary presentation

Overview of the EIC project Monday, 2 August 2021 15:00 (30 minutes)

Presenter: ASCHENAUER, elke-caroline (BNL) Session Classification: Plenary

September 28, 2021 Page 167 A Virtual Tribute … / Report of Contributions Overview on lattice & LAMET/EF …

Contribution ID: 217 Type: Invited plenary presentation

Overview on lattice & LAMET/EFT calculations of TMD PDF quasi PDFs and GPDs Monday, 2 August 2021 15:50 (30 minutes)

Primary author: CICHY, Krzysztof Presenter: CICHY, Krzysztof Session Classification: Plenary

September 28, 2021 Page 168 A Virtual Tribute … / Report of Contributions Heavy Flavor at the EIC

Contribution ID: 218 Type: not specified

Heavy Flavor at the EIC Monday, 2 August 2021 16:20 (30 minutes)

Primary author: VITEV, Ivan (LANL) Presenter: VITEV, Ivan (LANL) Session Classification: Plenary

September 28, 2021 Page 169 A Virtual Tribute … / Report of Contributions Overview of high temperature and …

Contribution ID: 219 Type: Invited plenary presentation

Overview of high temperature and high density QCD Tuesday, 3 August 2021 07:50 (30 minutes)

Primary author: SKULLERUD, Jon-Ivar (National University of Ireland Maynooth) Presenter: SKULLERUD, Jon-Ivar (National University of Ireland Maynooth) Session Classification: Plenary

September 28, 2021 Page 170 A Virtual Tribute … / Report of Contributions Nonequilibrium evolution of quar …

Contribution ID: 220 Type: Invited plenary presentation

Nonequilibrium evolution of quarkonium in medium Tuesday, 3 August 2021 07:00 (30 minutes)

Primary author: AKAMATSU, Yukinao (University of Osaka) Presenter: AKAMATSU, Yukinao (University of Osaka) Session Classification: Plenary

September 28, 2021 Page 171 A Virtual Tribute … / Report of Contributions Overview of heavy ion experiment …

Contribution ID: 221 Type: not specified

Overview of heavy ion experiment results and perspectives Tuesday, 3 August 2021 06:30 (30 minutes)

Primary author: CHRISTAKOGLOU, Panos (CERN) Presenter: CHRISTAKOGLOU, Panos (CERN) Session Classification: Plenary

September 28, 2021 Page 172 A Virtual Tribute … / Report of Contributions Open-quantum systems and EFT p …

Contribution ID: 222 Type: not specified

Open-quantum systems and EFT picture of in-medium Quarkonium Tuesday, 3 August 2021 08:20 (30 minutes)

Presenter: VAIRO, Antonio Session Classification: Plenary

September 28, 2021 Page 173 A Virtual Tribute … / Report of Contributions Signals for quark deconfinement i …

Contribution ID: 223 Type: Invited plenary presentation

Signals for quark deconfinement in the GWs from binary merger events Thursday, 5 August 2021 06:30 (30 minutes)

Primary author: BAUSWEIN, Andreas Presenter: BAUSWEIN, Andreas Session Classification: Plenary

September 28, 2021 Page 174 A Virtual Tribute … / Report of Contributions Status of the sign problem in QCD …

Contribution ID: 224 Type: Invited plenary presentation

Status of the sign problem in QCD and perspectives in simulating lattice gauge theories with quantum technology Wednesday, 4 August 2021 14:20 (30 minutes)

Primary author: WIESE, Uwe-Jens (University of Bern) Presenter: WIESE, Uwe-Jens (University of Bern) Session Classification: Plenary

September 28, 2021 Page 175 A Virtual Tribute … / Report of Contributions Machine learning and quantum co …

Contribution ID: 225 Type: not specified

Machine learning and quantum computing applied to particle physics Wednesday, 4 August 2021 15:10 (30 minutes)

Primary author: RINGER, Felix (LBNL) Presenter: RINGER, Felix (LBNL) Session Classification: Plenary

September 28, 2021 Page 176 A Virtual Tribute … / Report of Contributions Resurgence: how to connect pertu …

Contribution ID: 226 Type: Invited plenary presentation

Resurgence: how to connect perturbative and nonperturbative physics with distinguished applications to QCD Wednesday, 4 August 2021 15:40 (30 minutes)

Primary author: DUNNE, Gerald Presenter: DUNNE, Gerald Session Classification: Plenary

September 28, 2021 Page 177 A Virtual Tribute … / Report of Contributions Precision determinations of alpha_ …

Contribution ID: 227 Type: Invited plenary presentation

Precision determinations of alpha_s and quark masses Wednesday, 4 August 2021 13:50 (30 minutes)

Presenter: KRONFELD, Andreas (Fermilab) Session Classification: Plenary

September 28, 2021 Page 178 A Virtual Tribute … / Report of Contributions X(3872) mass, decay, and producti …

Contribution ID: 228 Type: Invited plenary presentation

X(3872) mass, decay, and production in pp (and heavy-ion) collisions Friday, 6 August 2021 18:00 (30 minutes)

Primary author: BRAATEN, Eric Presenter: BRAATEN, Eric Session Classification: Plenary

September 28, 2021 Page 179 A Virtual Tribute … / Report of Contributions Isospin breaking in lattice matrix e …

Contribution ID: 229 Type: Invited plenary presentation

Isospin breaking in lattice matrix elements for Vus Thursday, 5 August 2021 07:00 (30 minutes)

Presenter: MARTINELLI, Guido (Physics Department Sapienza Università di Roma) Session Classification: Plenary

September 28, 2021 Page 180 A Virtual Tribute … / Report of Contributions RBC/UKQCD collaboration results …

Contribution ID: 230 Type: not specified

RBC/UKQCD collaboration results on epsilon’/epsilon Friday, 6 August 2021 17:10 (30 minutes)

Primary author: KELLY, Christopher (Brookhaven National Laboratory) Presenter: KELLY, Christopher (Brookhaven National Laboratory) Session Classification: Plenary

September 28, 2021 Page 181 A Virtual Tribute … / Report of Contributions Walking and the dilaton of near- …

Contribution ID: 231 Type: Invited plenary presentation

Walking and the dilaton of near-conformal gauge theories Friday, 6 August 2021 16:40 (30 minutes)

Primary author: KUTI, Julius Presenter: KUTI, Julius Session Classification: Plenary

September 28, 2021 Page 182 A Virtual Tribute … / Report of Contributions Gauge fields and condensed matter …

Contribution ID: 232 Type: Invited plenary presentation

Gauge fields and condensed matter ADS/CFT applications Thursday, 5 August 2021 08:20 (30 minutes)

Primary author: ZAANEN, Jan (Leiden University) Presenter: ZAANEN, Jan (Leiden University) Session Classification: Plenary

September 28, 2021 Page 183 A Virtual Tribute … / Report of Contributions Neutron lifetime and dark decay of …

Contribution ID: 233 Type: not specified

Neutron lifetime and dark decay of the neutron and hydrogen, neutron-antineutron oscillations Thursday, 5 August 2021 07:50 (30 minutes)

Primary author: BEREZHIANI, Zurab Presenter: BEREZHIANI, Zurab Session Classification: Plenary

September 28, 2021 Page 184 A Virtual Tribute … / Report of Contributions Compositeness above the Electrow …

Contribution ID: 234 Type: Parallel contribution

Compositeness above the Electroweak scale and a proposed test at LHCb. Wednesday, 4 August 2021 17:20 (20 minutes)

I review attempts at constructing models of partial compositeness from strongly coupled gauge theories. A few minimality assumptions allow one to isolate a small number of prototypical models. After presenting the main idea, I discuss a recent proposal to detect a light ALP, predicted inall these models, at the LHCb detector.

Primary author: FERRETTI, Gabriele (Chalmers university) Presenter: FERRETTI, Gabriele (Chalmers university) Session Classification: Parallels Track G

September 28, 2021 Page 185 A Virtual Tribute … / Report of Contributions Spectroscopic Properties of Light S …

Contribution ID: 236 Type: Parallel contribution

Spectroscopic Properties of Light Strange Baryons Friday, 6 August 2021 14:30 (20 minutes)

Hadron spectroscopy is an important tool to study quark dynamics by various hadron properties such as resonance mass, spin, parity, angular momentum, etc. In addition to these, magnetic moments and various possible decay channels are of keen interest to know the intrinsic interaction. A potential model is used to determine these properties for a particular hadron, and the results are compared with experimental findings. Here, a non-relativistic hypercentral Constituent Quark Model has been employed to obtain radial and orbital excited states of light baryons from octet and decuplet families. The potential term consists of Coulomb-like term and confining termtaken as linear as well as correction term has been added. So far, the results have been obtained for N, Δ, Ξ, Λ, Σ baryons and compared with available experimental results. Also, Regge trajectories have been plot for the calculated mass and assigned spin-parity to obtain the linear curve. The magnetic moment for the ground state have been evaluated using the effective mass. Some of the light strange baryons have scarce experimental known states. Thus, upcoming experimental facil- ities such as PANDA are expected to reveal more unknown states which shall give opportunity to corroborate the present findings.

Primary authors: Ms MENAPARA, Chandni (Sardar Vallabhbhai National Institute of Technology Surat); Dr RAI, Ajay Kumar (Sardar Vallabhbhai National Institute of Technology Surat, India) Presenter: Ms MENAPARA, Chandni (Sardar Vallabhbhai National Institute of Technology Surat)

Session Classification: Parallels Track B

Track Classification: B: Light quarks

September 28, 2021 Page 186 A Virtual Tribute … / Report of Contributions Highly excited pure gauge SU(3) fl …

Contribution ID: 237 Type: Parallel contribution

Highly excited pure gauge SU(3) flux tubes Monday, 2 August 2021 17:40 (15 minutes)

Spectra with full towers of levels are expected due to the quantization of the string vibrations. We study a spectrum of flux tubes with static quark and antiquark sources for pure gauge SU(3) lattice QCD in 3+1 dimensions up to a significant number of excitations.

To go high in the spectrum, we specialize in he most symmetric case, the Σ+, use a large set of operators, solve the generalized eigenvalue and compare different lattice QCD gauge actions and anisotropies.

Primary authors: Dr CARDOSO, Nuno (CeFEMA, IST Lisboa); BICUDO, Pedro (IST Lisboa); Mr ALIREZA, Sharifian (CeFEMA, IST Lisboa)

Presenter: BICUDO, Pedro (IST Lisboa) Session Classification: Parallels Focus Subsection

Track Classification: A: Vacuum structure and confinement

September 28, 2021 Page 187 A Virtual Tribute … / Report of Contributions Composite dark matter and gravit …

Contribution ID: 241 Type: Parallel contribution

Composite dark matter and gravitational waves signatures Thursday, 5 August 2021 09:20 (20 minutes)

With non-perturbative lattice calculations we investigate the finite-temperature confinement transition of a composite dark matter model. We focus on the regime in which this early-universe transition is first order and would generate a stochastic background of gravitational waves.Fu- ture searches for stochastic gravitational waves will provide a new way to discover or constrain composite dark matter, in addition to direct-detection and collider experiments. As a first stepto enabling this phenomenology, we determine how heavy the dark fermions need to be in order to produce a first-order stealth dark matter confinement transition.

Primary author: RINALDI, Enrico (University of Michigan) Presenter: RINALDI, Enrico (University of Michigan) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 188 A Virtual Tribute … / Report of Contributions Exploring hadron dynamics in the …

Contribution ID: 242 Type: Parallel contribution

Exploring hadron dynamics in the large N_c limit Wednesday, 4 August 2021 17:40 (20 minutes)

The maturity era of lattice quantum field theory simulations brings in ample potential bothto explore theories beyond QCD, and to investigate the qualitative workings of QCD by opening up the parameter space. We will focus on studying hadronic interactions and weak decays as a function of the number of colours, with four dynamical quark flavours. This shines light on classic problems such as the \Delta I=1/2 rule, or the dynamics of spontaneous chiral symmetry breaking.

Primary authors: PENA, Carlos (IFT UAM-CSIC, Madrid); Mrs ROMERO-LÓPEZ, Fernando (IFIC-UV); Prof. HERNÁNDEZ, Pilar (IFIC-UV); Dr DONINI, Andrea (IFIC) Presenter: PENA, Carlos (IFT UAM-CSIC, Madrid) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 189 A Virtual Tribute … / Report of Contributions Dark QCD for Dark Matter

Contribution ID: 243 Type: Parallel contribution

Dark QCD for Dark Matter Thursday, 5 August 2021 09:40 (20 minutes)

In this talk I will describe dark sectors made of non-abelian gauge theories with fermions neutral under the Standard Model. This leads to accidentally stable Dark Matter candidates that canbe populated minimally through gravitational interactions. In the pure glue scenario DM is the lightest glueball while adding light fermions the lightest pion and baryon are the DM candidates. Despite the absence of SM interactions these scenarios are constrained by structure formation, Neff and limits on DM self-interactions.

Primary author: REDI, Michele (INFN, Florence) Presenter: REDI, Michele (INFN, Florence) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 190 A Virtual Tribute … / Report of Contributions A lattice QCD perspective on the m…

Contribution ID: 244 Type: Invited plenary presentation

A lattice QCD perspective on the muon g-2 Thursday, 5 August 2021 12:10 (20 minutes)

Primary author: FODOR, Zoltan Presenter: FODOR, Zoltan Session Classification: Round Table

September 28, 2021 Page 191 A Virtual Tribute … / Report of Contributions A BSM perspective on the muon g-2

Contribution ID: 245 Type: not specified

A BSM perspective on the muon g-2 Thursday, 5 August 2021 12:30 (20 minutes)

Primary author: CRIVELLIN, Andreas (PSI & UZH) Presenter: CRIVELLIN, Andreas (PSI & UZH) Session Classification: Round Table

September 28, 2021 Page 192 A Virtual Tribute … / Report of Contributions Data-driven approaches to the mu …

Contribution ID: 246 Type: not specified

Data-driven approaches to the muon g-2 Thursday, 5 August 2021 11:50 (20 minutes)

Primary author: COLANGELO, Gilberto (University of Bern) Presenter: COLANGELO, Gilberto (University of Bern) Session Classification: Round Table

September 28, 2021 Page 193 A Virtual Tribute … / Report of Contributions Discussion

Contribution ID: 247 Type: not specified

Discussion Thursday, 5 August 2021 12:50 (20 minutes)

Presenter: PORTOLES, Jorge (IFIC (UV-CSIC)) Session Classification: Round Table

September 28, 2021 Page 194 A Virtual Tribute … / Report of Contributions On naturalness of muon anomalies …

Contribution ID: 249 Type: Parallel contribution

On naturalness of muon anomalies in strongly coupled theories Thursday, 5 August 2021 09:00 (20 minutes)

I will discuss the muon anomalies that have been persisting in data in the recent years, namely the muon g-2 and the lepton flavour non-universality in B decays, in the context of strongly coupled theories. I will show that these anomalies are natural in composite theories of the Higgs sector of the Standard Model. In particular, the characteristic scale of 2 TeV emerging from the muon g-2 points straightly to technicolor-like theories.

Primary authors: CACCIAPAGLIA, Giacomo (IP2I Lyon); Prof. COT, Corentin (IP2I Lyon); Prof. SANNINO, Francesco (Napoli University & CP3 Odense)

Presenter: CACCIAPAGLIA, Giacomo (IP2I Lyon) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 195 A Virtual Tribute … / Report of Contributions Bringing Yang-Mills Theory Closer …

Contribution ID: 251 Type: Parallel contribution

Bringing Yang-Mills Theory Closer to Quasiclassics Thursday, 5 August 2021 10:30 (20 minutes)

A deformation of pure Yang-Mills theory by a phantom field similar to the Faddeev-Popov ghost is considered. In this theory an Ersatz-supersymmetry is identified which results in cancellation of quantum corrections uptotwo- loop order. A quadruplet built from two complex fields in the adjoint –the Faddeev-Popov ghost and the phantom Φ, all with the wrong statistics – balances four gauge fields a. At this level, the instanton measure and the β function is fully determined by quasiclassics. In a simple φ4 theory with a phantom added I identify a strictly conserved Ersatz-supercurrent. In the latter theory unitarity of amplitudes persists despite the presence of the phantom. Indeformed Yang-Mills it is likely (although not proven) to persist too in all amplitudes with only gluon external legs. It remains to be seen whether this construction is just a device facilitating some loop calculations or broader applications can be found.

Primary author: Prof. SHIFMAN, Mikhail Presenter: Prof. SHIFMAN, Mikhail Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 196 A Virtual Tribute … / Report of Contributions Remembering Ann Nelson

Contribution ID: 252 Type: not specified

Remembering Ann Nelson Wednesday, 4 August 2021 16:10 (15 minutes)

Primary author: GEORGI, Howard (Harvard) Presenter: GEORGI, Howard (Harvard) Session Classification: Plenary

September 28, 2021 Page 197 A Virtual Tribute … / Report of Contributions Remembering Simon Eidelman

Contribution ID: 253 Type: not specified

Remembering Simon Eidelman Wednesday, 4 August 2021 16:25 (15 minutes)

Primary author: SHURYAK, Edward (Stony Brook University, USA) Presenter: SHURYAK, Edward (Stony Brook University, USA) Session Classification: Plenary

September 28, 2021 Page 198 A Virtual Tribute … / Report of Contributions An introduction to the large charg …

Contribution ID: 254 Type: Parallel contribution

An introduction to the large charge expansion Thursday, 5 August 2021 10:10 (20 minutes)

Working in sectors of large global charge leads to important simplifications when studying strongly coupled CFTs. In this talk I will introduce the large-charge expansion via the simple example of the O(2) model and apply it in a number of other situations displaying a richer structure, such as asymptotically safe theories and walking dynamics.

Primary author: ORLANDO, Domenico (INFN Torino) Presenter: ORLANDO, Domenico (INFN Torino) Session Classification: Parallels Track G

Track Classification: G: Strongly Coupled Theories

September 28, 2021 Page 199 A Virtual Tribute … / Report of Contributions Bottomonium suppression in an o …

Contribution ID: 255 Type: Parallel contribution

Bottomonium suppression in an open quantumsystem using the quantum trajectories method

Presenter: VANDER GRIEND, Peter (Technical University of Munich) Session Classification: Parallel

Track Classification: D: Deconfinement

September 28, 2021 Page 200 A Virtual Tribute … / Report of Contributions Introduction to HEP Masterclasses

Contribution ID: 256 Type: not specified

Introduction to HEP Masterclasses Tuesday, 3 August 2021 11:30 (20 minutes)

Primary authors: CECIRE, Kenneth (University of Notre Dame); CECIRE, Kenneth Presenters: CECIRE, Kenneth (University of Notre Dame); CECIRE, Kenneth Session Classification: Outreach

September 28, 2021 Page 201 A Virtual Tribute … / Report of Contributions Brief introdcution to the Particle T …

Contribution ID: 257 Type: not specified

Brief introdcution to the Particle Therapy Masterclass Tuesday, 3 August 2021 11:50 (15 minutes)

Presenter: FOKA, Panagiota (GSI) Session Classification: Outreach

September 28, 2021 Page 202 A Virtual Tribute … / Report of Contributions Demo Session I: ATLAS Z Masterc …

Contribution ID: 258 Type: not specified

Demo Session I: ATLAS Z Masterclass Tuesday, 3 August 2021 12:05 (45 minutes)

Primary author: BUGGE, Magnar Presenter: BUGGE, Magnar Session Classification: Outreach

September 28, 2021 Page 203 A Virtual Tribute … / Report of Contributions Demo Session I: ALICE Strangeness

Contribution ID: 259 Type: not specified

Demo Session I: ALICE Strangeness Tuesday, 3 August 2021 12:05 (45 minutes)

Primary author: HATZIFOTIADOU, Despina (INFN Bologna) Presenter: HATZIFOTIADOU, Despina (INFN Bologna) Session Classification: Outreach

September 28, 2021 Page 204 A Virtual Tribute … / Report of Contributions Demo Session I: Belle II

Contribution ID: 260 Type: not specified

Demo Session I: Belle II Tuesday, 3 August 2021 12:05 (45 minutes)

Primary authors: DOLEZAL, Zdenek; DOLEZAL, Zdenek (Charles University Prague) Presenters: DOLEZAL, Zdenek; DOLEZAL, Zdenek (Charles University Prague) Session Classification: Outreach

September 28, 2021 Page 205 A Virtual Tribute … / Report of Contributions Demo Session I: CMS

Contribution ID: 261 Type: not specified

Demo Session I: CMS Tuesday, 3 August 2021 12:05 (45 minutes)

Primary authors: CECIRE, Kenneth; CECIRE, Kenneth (University of Notre Dame); FETSKO, Michael; WETZLER, Susan (Quarknet) Presenters: CECIRE, Kenneth; CECIRE, Kenneth (University of Notre Dame); FETSKO, Michael; WET- ZLER, Susan (Quarknet) Session Classification: Outreach

September 28, 2021 Page 206 A Virtual Tribute … / Report of Contributions Demo Session I: MINERvA

Contribution ID: 262 Type: not specified

Demo Session I: MINERvA Tuesday, 3 August 2021 12:05 (45 minutes)

Primary author: WOOD, Shane Presenter: WOOD, Shane Session Classification: Outreach

September 28, 2021 Page 207 A Virtual Tribute … / Report of Contributions Demo Session I: ALICE R_AA

Contribution ID: 263 Type: not specified

Demo Session I: ALICE R_AA Tuesday, 3 August 2021 12:05 (45 minutes)

Primary author: MIKORSKI, Marcus Presenter: MIKORSKI, Marcus Session Classification: Outreach

September 28, 2021 Page 208 A Virtual Tribute … / Report of Contributions Demo Session I: Particle Therapy

Contribution ID: 264 Type: not specified

Demo Session I: Particle Therapy Tuesday, 3 August 2021 12:05 (45 minutes)

Primary authors: MAMARAS, Aristeidis; SKRIJELJ, Damir (Master Student) Presenters: MAMARAS, Aristeidis; SKRIJELJ, Damir (Master Student) Session Classification: Outreach

September 28, 2021 Page 209 A Virtual Tribute … / Report of Contributions Demo Session II: ATLAS Z Master …

Contribution ID: 265 Type: not specified

Demo Session II: ATLAS Z Masterclass Tuesday, 3 August 2021 13:00 (45 minutes)

Primary author: BUGGE, Magnar Presenter: BUGGE, Magnar Session Classification: Outreach

September 28, 2021 Page 210 A Virtual Tribute … / Report of Contributions Demo Session II: ALICE Strangeness

Contribution ID: 266 Type: not specified

Demo Session II: ALICE Strangeness Tuesday, 3 August 2021 13:00 (45 minutes)

Primary author: HATZIFOTIADOU, Despina (INFN Bologna) Presenter: HATZIFOTIADOU, Despina (INFN Bologna) Session Classification: Outreach

September 28, 2021 Page 211 A Virtual Tribute … / Report of Contributions Demo Session II: Belle II

Contribution ID: 267 Type: not specified

Demo Session II: Belle II Tuesday, 3 August 2021 13:00 (45 minutes)

Primary authors: DOLEZAL, Zdenek; DOLEZAL, Zdenek (Charles University Prague) Presenters: DOLEZAL, Zdenek; DOLEZAL, Zdenek (Charles University Prague) Session Classification: Outreach

September 28, 2021 Page 212 A Virtual Tribute … / Report of Contributions Demo Session II: CMS

Contribution ID: 268 Type: not specified

Demo Session II: CMS Tuesday, 3 August 2021 13:00 (45 minutes)

September 28, 2021 Page 213 A Virtual Tribute … / Report of Contributions Demo Session II: MINERvA

Contribution ID: 269 Type: not specified

Demo Session II: MINERvA Tuesday, 3 August 2021 13:00 (45 minutes)

Presenter: WOOD, Shane Session Classification: Outreach

September 28, 2021 Page 214 A Virtual Tribute … / Report of Contributions Demo Session II: ALICE R_AA

Contribution ID: 270 Type: not specified

Demo Session II: ALICE R_AA Tuesday, 3 August 2021 13:00 (45 minutes)

Primary author: MIKORSKI, Marcus Presenter: MIKORSKI, Marcus Session Classification: Outreach

September 28, 2021 Page 215 A Virtual Tribute … / Report of Contributions Demo Session II: Particle Therapy

Contribution ID: 271 Type: not specified

Demo Session II: Particle Therapy Tuesday, 3 August 2021 13:00 (45 minutes)

Primary authors: MAMARAS, Aristeidis (CERN); SKRIJELJ, Damir (Master Student) Presenters: MAMARAS, Aristeidis (CERN); SKRIJELJ, Damir (Master Student) Session Classification: Outreach

September 28, 2021 Page 216 A Virtual Tribute … / Report of Contributions Closing

Contribution ID: 272 Type: not specified

Closing Tuesday, 3 August 2021 13:45 (10 minutes)

Primary author: FOKA, Panagiota (GSI) Presenter: FOKA, Panagiota (GSI) Session Classification: Outreach

September 28, 2021 Page 217 A Virtual Tribute … / Report of Contributions Open quantum systems round- …

Contribution ID: 273 Type: not specified

Open quantum systems round-table discussion Tuesday, 3 August 2021 10:10 (1 hour)

Presenter: HAMMER, Hans-Werner (TU Darmstadt) Session Classification: Round Table

September 28, 2021 Page 218 A Virtual Tribute … / Report of Contributions Machine learning round-table disc …

Contribution ID: 274 Type: not specified

Machine learning round-table discussion Wednesday, 4 August 2021 18:10 (1 hour)

Presenter: CRANMER, Kyle (New York University) Session Classification: Round Table

September 28, 2021 Page 219 A Virtual Tribute … / Report of Contributions EIC round-table discussion

Contribution ID: 275 Type: not specified

EIC round-table discussion Monday, 2 August 2021 18:10 (1 hour)

Presenter: QIU, Jianwei (Jefferson Lab) Session Classification: Round Table

September 28, 2021 Page 220 A Virtual Tribute … / Report of Contributions Zoom recording of the muon g-2 …

Contribution ID: 277 Type: not specified

Zoom recording of the muon g-2 round-table Thursday, 5 August 2021 11:30 (1h 40m)

Session Classification: Round Table

September 28, 2021 Page 221