2nd Workshop on Nucleon Structure at Low Q and μASTI

Europe/Athens
AVRA Imperial, Kolymbari, Crete

AVRA Imperial, Kolymbari, Crete

Avra Imperial Hotel Conference Center, Kolymbari, Crete
Nikos Sparveris (Temple University), Jian-Ping Chen (Jefferson Lab), Alexandre Deur (Jefferson Lab), Vladimir Pascalutsa (JGU Mainz), Marc Vanderhaeghen (JGU Mainz)
Description

The second "Low-Q" Workshop will be taking place at the AVRA Imperial Hotel Conference Center in Crete, in the period of 15-21 May, 2023. The meeting brings together communities of nuclear, particle and atomic physics. The Low-Q 2023 follows the meeting previously held at ECT* in 2018 and aims to review the most significant experimental and theoretical developments in the field of low-energy QCD and nucleon structure, with emphasis on its role in atomic spectroscopy and other precision quantities. The last day of the workshop is dedicated to μASTI (muonic Atom Spectroscopy Theory Initiative).

 

The room reservations at AVRA are open until April 15th 2023, subject to availability.

 

Registration
Participants
  • Calvin Howell
  • Chao Peng
  • Hamza Atac
  • Ilya Larin
  • Judith McGovern
  • Kostas Orginos
  • Michael Birse
  • Paolo Pedroni
  • +29
    • 08:30 09:15
      Registration 45m
    • 09:15 09:30
      Welcome, opening remarks
    • 09:30 11:00
      Overview
    • 11:00 11:15
      Discussion
    • 11:15 11:45
      Coffee break 30m
    • 11:45 13:15
      Nucleon Polarizabilities: Real Compton Scattering
    • 13:15 13:30
      Discussion
    • 13:30 14:30
      Lunch 1h
    • 16:30 17:00
      Coffee 30m
    • 17:00 18:30
      Model-independent extractions: Multipoles and (generalized) polarizabilities
      • 17:00
        Hadronic and Nuclear Physics data analysis as an inverse problem – The AMIAS method 30m
        Speaker: Kostas Papanicolas
      • 17:30
        Extraction of polarizabilities from Compton scattering 30m
        Speaker: Paolo Pedroni
      • 18:00
        Generalized polarizabilities: status and planned VCS experiments 30m
        Speaker: Nikos Sparveris
    • 18:30 19:00
      Discussion
    • 19:30 21:00
      Welcome reception 1h 30m
    • 08:40 11:00
      Nucleon Structure: Spin structure
      • 09:30
        Spin sum rules and polarizabilities from the JLab CLAS EG4 experiment. 30m
        Speakers: Alexandre Deur (Jefferson Lab), Marco Ripani (INFN - National Institute for Nuclear Physics)
      • 10:00
        New results on the proton spin sum rules and polarizabilities 30m
        Speaker: Karl Slifer (University of New Hampshire)
      • 10:30
        Perturbative verification of sum rules and relations for Compton scattering 30m
        Speaker: Volodymyr Biloshytskyi (JGU KPH Mainz)
    • 11:00 11:15
      Discussion
    • 11:15 11:45
      Coffee break 30m
    • 11:45 13:15
      Nucleon Structure: Lattice QCD
    • 13:15 13:30
      Discussion
    • 13:30 14:30
      Lunch 1h
    • 16:30 17:00
      Coffee 30m
    • 17:00 18:00
      Hadronic Polarizabilties
      • 17:00
        Pion polarizabilities 30m
        Speaker: Ilya Larin
      • 17:30
        Photon-photon fusion processes to pions and pion polarizability extraction 30m
        Speaker: Igor Danilkin
    • 18:00 18:45
      Discussion
    • 09:30 11:00
      Proton charge-radius puzzle
    • 11:00 11:15
      Discussion
    • 11:15 11:45
      Coffee 30m
    • 11:45 13:15
      Hyperfine Splitting
    • 13:15 13:30
      Discussion
    • 13:30 14:30
      Lunch 1h
    • 16:30 17:00
      Coffee 30m
    • 17:00 18:30
      Proton radius, polarizabilities and muonic hydrogen
      • 17:00
        Charge radii from the flavor decomposition of the nucleon FFs 30m
        Speaker: Dr Hamza Atac
      • 17:30
        The MUon proton Scattering Experiment (MUSE) 30m
        Speaker: Win Lin (Rutgers University)
      • 18:00
        Two-Photon Exchange Contribution to Muonic-Hydrogen Lamb Shift and Proton Polarizability from Lattice QCD 30m
        Speaker: Xu Feng
    • 18:30 19:00
      Discussion
    • 09:30 11:00
      Sum rules
      • 09:30
        Hadronic contributions to precision quantities using sum rules versus EFT versus LQCD 30m
        Speaker: Dr Vladimir Pascalutsa (University of Mainz)
      • 10:00
        Measurement of the Bjorken sum rule at low Q and extraction of the strong coupling $\alpha_{g_1}$ 30m
        Speaker: Jian-Ping Chen (Jefferson Lab)
      • 10:30
        Neutron spin polarizabilities and sum rules at low Q 30m
        Speaker: Alexandre Deur (Jefferson Lab)
    • 11:00 11:15
      Discussion
    • 11:15 11:45
      Coffee 30m
    • 11:45 12:45
      Nucleon mass structure
      • 11:45
        The proton gluonic gravitational form factors 30m
        Speaker: Zein-Eddine Meziani (Temple University)
      • 12:15
        Electromagnetic and gravitational local spatial densities of hadrons. 30m
        Speaker: Herzallah H.H. Alharazin (Ruhr-University Bochum)
    • 12:45 13:00
      Discussion
    • 13:30 14:30
      Lunch 1h
    • 15:25 21:25
      Excursion & Workshop dinner 6h
    • 13:45 14:45
      Lunch 1h
    • 15:30 16:30
      Nucleon structure in nuclei
      • 15:30
        Understanding the EMC effect and nucleon modification 30m
        Speaker: Gerassimos Petratos (Kent State University)
      • 16:00
        Nucleon-to-Delta(1232) transition form factor 30m
        Speaker: Michael Paolone (New Mexico State University)
    • 16:30 17:00
      Coffee 30m
    • 17:00 18:30
      New ideas: Experimental programs
      • 17:00
        Partity-violating muon scattering 30m

        A measurement of parity-violating muon scattering would provide a novel test of lepton universality in an observable determined by the weak interaction, with the potential for relatively larger contributions from beyond standard model physics. Electron parity violation experiments have developed advanced technologies to measure small asymmetries often at multi-MHz rates. A muon parity violation measurement presents challenges due to numerous factors, including lower beam fluxes, muon decays in flight, beam contamination by other particle species, and limitations in spin control. We will describe a possible low energy parity violating muon scattering experiment at the Paul Scherrer Institute, taking into account ongoing developments towards higher flux muon beams.

        Speaker: Ronald Gilman (Rutgers University)
      • 17:30
        Tohoku ULQ2 (Ultra Low Q2) Project for Proton Charge Radius 30m
        Speaker: Toshimi Suda (ELPH, Tohoku University)
      • 18:00
        The Jefferson Lab positron experimental program 30m
        Speaker: Eric Voutier
    • 18:30 19:00
      Discussion and closing
    • 09:30 11:30
      Muonic-Atom Theory Initiative (MuASTI)
      • 09:30
        Introduction and structure 1h 30m
        Speakers: Carl Carlson (College of William and Mary/JGU-Mainz), Franziska Hagelstein (JGU Mainz & PSI), Dr Vladimir Pascalutsa (University of Mainz)
    • 11:30 12:00
      Coffee 30m
    • 14:30 17:30
      The Oldest Olive Tree and Winery Tour 3h
    • 19:00 22:00
      Dinner 3h
    • 07:00 16:00
      Departure 9h