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Next-generation GPD studies with exclusive meson production at EIC

US/Eastern
C-120 (CFNS Stony Brook)

C-120

CFNS Stony Brook

Stony Brook University
Christian Weiss (Jefferson Lab) , Lech Szymanowski, Marie Boer, Salvatore Fazio (Brookhaven National Laboratory)
Description

Generalized parton distributions (GPDs) describe the 3-dimensional structure of the nucleon in QCD and provide new information about the internal dynamics of quarks and gluons (energy-momentum tensor, angular momentum). Measurements of GPDs with hard exclusive processes and related probes are an essential element of the EIC science program. While GPD measurements with deeply-virtual Compton scattering (DVCS) have been extensively discussed, the potential of hard exclusive meson production for GPD studies at EIC has not been fully explored so far. Meson production processes can directly probe gluons and quark spin structure in the nucleon, separate quark flavor distributions and strangeness, and reveal the dynamics in diffraction, color transparency, and saturation at small x. Recent theoretical advances and experimental results from HERA, COMPASS, JLab, and LHC, and the proposed program at RHIC, have heightened the interest in meson production and shown the promise and challenges of such measurements. The workshop will assess the potential of exclusive meson production for GPD studies with EIC and discuss the steps toward its realization. Topics include:

  • Gluon imaging with heavy vector mesons (φ, J/ψ, Υ)
  • Nucleon spin structure with pseudoscalar mesons (π, Κ, η)
  • QCD factorization and nonperturbative dynamics in meson production
  • Joint DVCS-meson analysis and GPD flavor separation
  • Diffraction and quantum fluctuations in vector meson production
  • Color transparency and saturation in meson production at small x
  • Meson and baryon resonances in hard processes
  • Central and forward detection in meson production at EIC
  • Simulation tools for meson production

The meeting will bring together experimental and theoretical researchers for informal presentations and in-depth discussions. A particular goal will be to enable future collaborative work on process simulations and physics impact studies.

Participants
  • Abha Rajan
  • Abhay Deshpande
  • Alexander Kiselev
  • Andrzej Sandacz
  • Charlotte Van Hulse
  • Christian Weiss
  • Christine Ploen
  • Christopher Anson
  • Dilini Bulumulla
  • E. C. Aschenauer
  • George Sterman
  • Jakub Wagner
  • Jinlong Zhang
  • Julie Roche
  • Kemal Tezgin
  • Kyungseon Joo
  • Lijuan Ruan
  • Marie BOER
  • Markus Diehl
  • Matthias Burkardt
  • Nils Feege
  • Peter Kroll
  • Peter Schweitzer
  • Rafayel Paremuzyan
  • Salvatore Fazio
  • simonetta liuti
  • Spencer Klein
  • Sylvester Joosten
  • Vadim Guzey
  • Wenliang Li
  • Whitney Armstrong
  • William Schmidke
  • Wlodek Guryn
  • Yulia Furletova
  • Zhongling Ji
    • 08:50 09:30
      INTRODUCTION/PLAN C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      • 08:50
        Greetings from the CFNS 10m
        Speaker: Abhay Deshpande
      • 09:00
        Introduction from the organizers and plan of the meeting 30m
        Speaker: Christian Weiss (Jefferson Lab)
    • 09:30 10:50
      MESON PRODUCTION THEORY / PSEUDOSCALAR MESON PRODUCTION C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Salvatore Fazio (Brookhaven National Laboratory)
      • 09:30
        Meson production in the modified hard scattering approach 40m
        Speaker: Peter Kroll (University of Wuppertal )
      • 10:10
        Pseudoscalar meson production and quark transversity 40m
        Speaker: Simonetta Liuti (U. of Virginia)
    • 10:50 11:20
      Coffee break 30m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 11:20 12:20
      MESON PRODUCTION THEORY / PSEUDOSCALAR MESON PRODUCTION C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Christian Weiss (Jefferson Lab)
      • 11:20
        Transverse force tomography 40m
        Speaker: Matthias Burkardt (New Mexico State University )
      • 12:00
        Transversity GPDs in the large-Nc limit 20m
        Speaker: Kemal Tezgin (University of Connecticut )
    • 12:20 13:40
      Lunch Break 1h 20m
    • 13:40 14:10
      MESON PRODUCTION THEORY / PSEUDOSCALAR MESON PRODUCTION C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Marie Boer (CUA)
    • 14:10 15:00
      MESON PRODUCTION THEORY / PSEUDOSCALAR MESON PRODUCTION: Discussion C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 15:00 15:30
      Coffee break 30m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 15:30 17:10
      ENERGY-MOMENTUM TENSOR, ANGULAR MOMENTUM, SCALAR STRUCTURE C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Christian Weiss (Jefferson Lab)
      • 15:30
        Physics of energy-momentum tensor form factors 40m
        Speaker: Peter Schweitzer (UConn)
      • 16:10
        Nucleon scalar structure and QCD vacuum 40m
        Speaker: Ismail Zahed (Stony Brook University)
      • 16:50
        GPDs and angular momentum 20m
        Speaker: Abha Rajan (University of Virginia)
    • 17:10 18:30
      ENERGY-MOMENTUM TENSOR, ANGULAR MOMENTUM, SCALAR STRUCTURE: Discussion C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 18:30 20:30
      Reception 2h C-120

      C-120

      CFNS Stony Brook

      Stony Brook University

      Social dinner/reception with catered food from Fratelli's Italian eatery in Stony Brook

    • 09:00 10:20
      VECTOR MESON PRODUCTION IN ULTRAPERIPHERAL A-A/P-A C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Marie Boer (CUA)
      • 09:00
        J/psi production in UPCs at ALICE 40m
        Speaker: Christopher Anson (Creighton University)
      • 09:40
        Vector meson production on nuclei and nuclear shadowing 40m
        Speaker: Vadim Guzey ( University of Jyvaskyla (Finland), Petersburg Nuclear Physics Institute (Russia) )
    • 10:20 10:50
      Coffee break 30m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 10:50 12:10
      VECTOR MESON PRODUCTION IN ULTRAPERIPHERAL A-A/P-A C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Salvatore Fazio (Brookhaven National Laboratory)
      • 10:50
        Vector meson production in UPCs and eSTARlight simulator 40m
        Speaker: Spencer Klein (LBNL)
      • 11:30
        GPDs sensitive measurements at RHIC and the EIC 40m
        Speaker: Elke Caroline Aschenauer (Brookhaven National Laboratory)
    • 12:10 13:30
      Lunch Break 1h 20m
    • 13:30 14:10
      Perspective: QCD in exclusive processes 40m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Speaker: George Sterman (Stony Brook University)
    • 14:10 15:30
      VECTOR MESON PRODUCTION IN E-P/MU-P C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Salvatore Fazio (Brookhaven National Laboratory)
      • 14:10
        Exclusive vector mesons at HERA and HERMES 40m
        Speaker: Charlotte Van Hulse ( University of the Basque Country – UPV/EHU )
      • 14:50
        DVMP in muon scattering at COMPASS 40m
        Speaker: Andrzej Sandacz ( National Centre for Nuclear Research, Warsaw )
    • 15:30 16:00
      Coffee break 30m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 16:00 17:00
      VECTOR MESON PRODUCTION IN E-P/MU-P C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Christian Weiss (Jefferson Lab)
      • 16:00
        Some thoughts about the theory of meson production 30m
        Speaker: Markus Diehl (DESY)
      • 16:30
        GPD analysis at CLAS12 30m
        Speaker: Kyungseon Joo (National Science Foundation)
    • 17:00 18:30
      Discussion: Vector meson production status and perspectives at EIC C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 18:30 20:30
      Dinner (optional, self-paid) 2h
    • 09:00 10:00
      EIC DETECTOR AND SIMULATIONS C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Salvatore Fazio (Brookhaven National Laboratory)
    • 10:00 10:30
      EIC DETECTOR AND SIMULATIONS: Discussion C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 10:30 11:00
      Coffee break 30m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 11:00 12:45
      J/PSI PRODUCTION NEAR THRESHOLD / BACKWARD MESON PRODUCTION C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Marie Boer (CUA)
    • 12:45 14:00
      Lunch Break 1h 15m
    • 14:00 15:00
      GPDs IN COMPTON-LIKE PROCESSES C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Convener: Christian Weiss (Jefferson Lab)
      • 14:00
        Timelike Compton scattering and related processes 40m
        Speaker: Jakub Wagner (National Centre for Nuclear Research)
      • 14:40
        Accessing GPDs through exclusive photo- and electro-production of lepton pairs 20m
        Speaker: Marie Boer (CUA)
    • 15:00 15:40
      GPDs IN COMPTON-LIKE PROCESSES: Discussion on compton-like processes vs. DVCS C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 15:40 16:10
      Coffee break 30m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
    • 16:10 17:30
      Discussion: Meson production simulations for EIC - Plans, Tools, Collaboration C-120

      C-120

      CFNS Stony Brook

      Stony Brook University
      Conveners: Salvatore Fazio (Brookhaven National Laboratory) , Marie Boer (CUA) , Christian Weiss (Jefferson Lab)
    • 17:30 17:40
      Adjourn 10m C-120

      C-120

      CFNS Stony Brook

      Stony Brook University