Joint 20th International Workshop on Hadron Structure and Spectroscopy and 5th workshop on Correlations in Partonic and Hadronic Interactions

Session

Wednesday Afternoon

2 Oct 2024, 13:30

"Pomegranate" hall (Ramada Hotel & Suites by Wyndham, Yerevan, Armenia)

11. Tests of fundamental symmetries via π0, η and η′

Liping Gan

02/10/2024, 13:30

The decays of the light meson π0, η and η′ offer a flavor-conserving laboratory to assess the low-energy QCD and to search for new physics Beyond the Standard Model. The QCD symmetries and symmetry breakings at low-energy, such as the chiral symmetry or the axial anomalies, are manifested in their most unambiguous form in the sector of light pseudoscalar mesons. An experimental study of...

10. Lorentz invariance violation from gamma ray bursts

Prof. Bo-Qiang Ma (Peking University)

02/10/2024, 13:55

Lorentz invariance violation (LV) can be examined through the time delay between high-energy and low-energy photons in gamma-ray bursts (GRBs). Previous studies determined the Lorentz violation energy scale as $E_{\rm LV} \simeq 3.60 \times 10^{17}$~GeV using Fermi Gamma-ray Space Telescope (FGST) data. We update the time delay model and reaffirm these findings with new observations.

31. Alternative Method for Measuring the Radius of the Deuteron

Misak Sargsian (Florida International University)

02/10/2024, 14:15

New method is presented for measuring the radius of the deuteron that can help to resolve the current discrepancies between muon-deuteron, electron-deuteron spectroscopic as well as electron-deuteron scattering measurements.

12. Status of the MUSE experiment

Dr Tigran Rostomyan (Paul Scherrer Institut)

02/10/2024, 14:35

The MUon proton Scattering Experiment (MUSE) at the Paul Scherrer Institute (PSI) was motivated by the proton radius puzzle. We obtain simultaneous high-precision measurements of elastic electron-proton and muon-proton scattering, alternating between positively and negatively charged leptons. The experiment will test lepton universality by comparing electron to muon scattering, will determine...

23. Gravitational form Factors and mechanical properties of a dressed quark

Prof. Asmita Mukherjee (IIT Bombay)

02/10/2024, 14:55

The form factors of the energy-momentum tensor give information on the pressure, energy and angular momentum distributions among quark and gluons inside the proton. We discuss the distributions of pressure and angular momentum inside a quark state dressed with one gluon.

28. The cold QCD program at sPHENIX

Audrey Francisco (CEA)

02/10/2024, 15:40

sPHENIX is a new experiment on the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. Its goal is to complete the scientific mission of RHIC in the study of the quark-gluon plasma and cold QCD effects.
The detector is designed to provide precision vertexing, tracking and electromagnetic and hadronic calorimetry in the central pseudorapidity region |η| < 1.1, with full...

32. SPD project at NICA

Igor Denisenko (Joint Institute for Nuclear Research (RU))

02/10/2024, 16:05

The SPD experiment will operate at one of the two interaction points of the NICA collider facility at JINR. The collider will provide polarized proton and deuteron beams for $pp$ and $dd$ collisions with the c.m.s. energy up to $\sqrt{s} = 27$ GeV and $\sqrt{s_{NN}} = 13.5$ GeV, respectively. The primary goal of the experiment is to study the polarized and unpolarized gluon structure of proton...