2nd Workshop on Nucleon Structure at Low Q and μASTI

Name: 2nd Workshop on Nucleon Structure at Low Q and μASTI
Start: 2023-05-15T08:30:00+03:00
End: 2023-05-21T23:30:00+03:00
Location: AVRA Imperial, Kolymbari, Crete

15 May 2023, 08:30 → 21 May 2023, 23:30 Europe/Athens

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.

Support

york@uni-mainz.de

sparveri@temple.edu

Registration

Participants

37 View full list

Monday 15 May
- 08:30
  
  Registration
- Welcome, opening remarks
- Overview
  - 1
    
    Prospects in Nucleon Structure at Low Q
    
    Speaker: Marc Vanderhaeghen (University Mainz)
    
    lowQ_vanderhaeghen_Crete2023.pdf
  - 2
    
    Progress in Lattice QCD
    
    Speaker: Constantia Alexandrou
    
    Alexandrou.pdf
  - 3
    
    Experimental developments from JLab
    
    Speaker: Mark Jones
    
    mkjones-lowq-talk.pdf
- Discussion
- 11:15
  
  Coffee break
- Nucleon Polarizabilities: Real Compton Scattering
  - 4
    
    Polarizabilities in EFTs and their impact in atoms
    
    Speaker: Judith McGovern
    
    LowQ-McGovern.pdf
  - 5
    
    Compton scattering at MAMI
    
    Speaker: Edoardo Mornacchi (Johannes Gutenberg-Universität Mainz)
    
    Mornacchi_LowQ.pdf
  - 6
    
    Compton scattering at HIγS
    
    Speaker: Calvin Howell (D)
    
    Howell_NucleonStructure-LowQ_CS-at-HIGS_fv.pdf
- Discussion
- 13:30
  
  Lunch
- 16:30
  
  Coffee
- Model-independent extractions: Multipoles and (generalized) polarizabilities
  - 7
    
    Hadronic and Nuclear Physics data analysis as an inverse problem – The AMIAS method
    
    Speaker: Kostas Papanicolas
  - 8
    
    Extraction of polarizabilities from Compton scattering
    
    Speaker: Paolo Pedroni
    
    Pedroni-LowQ.pdf
  - 9
    
    Generalized polarizabilities: status and planned VCS experiments
    
    Speaker: Nikos Sparveris
    
    Sparveris-Low-Q-2023.pdf
- Discussion
- 19:30
  
  Welcome reception
Tuesday 16 May
- Nucleon Structure: Spin structure
  - 10
    
    Spin sum rules and polarizabilities from the JLab CLAS EG4 experiment.
    
    Speakers: Alexandre Deur (Jefferson Lab), Marco Ripani (INFN - National Institute for Nuclear Physics)
    
    Deur_lowq23_EG4.pdf
  - 11
    
    New results on the proton spin sum rules and polarizabilities
    
    Speaker: Karl Slifer (University of New Hampshire)
    
    slifer_crete_2023.pdf
  - 12
    
    Perturbative verification of sum rules and relations for Compton scattering
    
    Speaker: Volodymyr Biloshytskyi (JGU KPH Mainz)
    
    Biloshytskyi_Crete.pdf
- Discussion
- 11:15
  
  Coffee break
- Nucleon Structure: Lattice QCD
  - 13
    
    Parton distributions from Lattice QCD
    
    Speaker: Kostas Orginos (William and Mary - Jlab)
    
    LowQ_2023.pdf
  - 14
    
    Proton GPDs from lattice QCD and their implication in spin physics
    
    Speaker: Prof. Martha Constantinou
    
    LowQ2_2023_Constantinou.pdf
  - 15
    
    Polarizabilities from four-point functions in lattice QCD
    
    Speaker: Frank Lee (George Washington University)
    
    lowQ-Crete-may2023-Lee.pdf
    
    lowQ-Crete-may2023-Lee.pptx
- Discussion
- 13:30
  
  Lunch
- 16:30
  
  Coffee
- Hadronic Polarizabilties
  - 16
    
    Pion polarizabilities
    
    Speaker: Ilya Larin
    
    ilarin_0523.pdf
  - 17
    
    Photon-photon fusion processes to pions and pion polarizability extraction
    
    Speaker: Igor Danilkin
    
    Danilkin2023_LowQ.pdf
- Discussion
Wednesday 17 May
- Proton charge-radius puzzle
  - 18
    
    The proton radius puzzle - an overview
    
    Speaker: Jan Bernauer
    
    crete.pdf
  - 19
    
    High precision measurements of the proton charge radius with PRad-II / Considerations & issues in the radius extraction
    
    Speaker: Dr Douglas Higinbotham
    
    LowQWorkshop-ProtonRadius-v4.pdf
    
    LowQWorkshop-ProtonRadius-v4.pptx
  - 20
    
    MUSE tracking
    
    Speaker: Tanvi Patel
    
    LowQ2023-TanviPatel.key
- Discussion
- 11:15
  
  Coffee
- Hyperfine Splitting
  - 21
    
    Nucleon spin structure contributions to the Hyperfine Structure determination and related topics
    
    Speaker: Carl Carlson (College of William and Mary/JGU-Mainz)
    
    Carlson_Talk_Crete.key
    
    Carlson_Talk_Crete.pdf
  - 22
    
    A Low Q2 Measurement of the Proton's Spin Structure Functions & Hyperfine Splitting Polarizability Contributions
    
    Speaker: David Ruth (University of New Hampshire)
    
    g2ptalk_LOWQ_DavidRuth.pdf
    
    g2ptalk_LOWQ_DavidRuth.pptx
  - 23
    
    EFT of nucleon structure in light muonic atoms
    
    Speaker: Franziska Hagelstein (JGU Mainz & PSI)
    
    lowQ_Hagelstein.pdf
- Discussion
- 13:30
  
  Lunch
- 16:30
  
  Coffee
- Proton radius, polarizabilities and muonic hydrogen
  - 24
    
    Charge radii from the flavor decomposition of the nucleon FFs
    
    Speaker: Dr Hamza Atac
  - 25
    
    The MUon proton Scattering Experiment (MUSE)
    
    Speaker: Win Lin (Rutgers University)
    
    LowQ 2023 MUSE.pdf
  - 26
    
    Two-Photon Exchange Contribution to Muonic-Hydrogen Lamb Shift and Proton Polarizability from Lattice QCD
    
    Speaker: Xu Feng
    
    LowQ_Feng.pdf
    
    LowQ_Feng.pptx
- Discussion
Thursday 18 May
- Sum rules
  - 27
    
    Hadronic contributions to precision quantities using sum rules versus EFT versus LQCD
    
    Speaker: Dr Vladimir Pascalutsa (University of Mainz)
    
    Pascalutsa_lowQ2023.key
    
    Pascalutsa_lowQ2023.pdf
  - 28
    
    Measurement of the Bjorken sum rule at low Q and extraction of the strong coupling $\alpha_{g_1}$
    
    Speaker: Jian-Ping Chen (Jefferson Lab)
    
    Chen-LowQ-BJ-AlphaS.pdf
  - 29
    
    Neutron spin polarizabilities and sum rules at low Q
    
    Speaker: Alexandre Deur (Jefferson Lab)
    
    Deur_lowq23_E97110.pdf
- Discussion
- 11:15
  
  Coffee
- Nucleon mass structure
  - 30
    
    The proton gluonic gravitational form factors
    
    Speaker: Zein-Eddine Meziani (Temple University)
    
    Low-Q-GGFF-meziani.pdf
  - 31
    
    Electromagnetic and gravitational local spatial densities of hadrons.
    
    Speaker: Herzallah H.H. Alharazin (Ruhr-University Bochum)
    
    Herzallah-Talk.key
- Discussion
- 13:30
  
  Lunch
- 15:25
  
  Excursion & Workshop dinner
Friday 19 May
- 13:45
  
  Lunch
- Nucleon structure in nuclei
  - 32
    
    Understanding the EMC effect and nucleon modification
    
    Speaker: Gerassimos Petratos (Kent State University)
  - 33
    
    Nucleon-to-Delta(1232) transition form factor
    
    Speaker: Michael Paolone (New Mexico State University)
    
    TFFs_lowQ_paolone.pdf
- 16:30
  
  Coffee
- New ideas: Experimental programs
  - 34
    
    Partity-violating muon scattering
    
    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)
    
    PVMuonCrete.pdf
  - 35
    
    Tohoku ULQ2 (Ultra Low Q2) Project for Proton Charge Radius
    
    Speaker: Toshimi Suda (ELPH, Tohoku University)
    
    Suda_LowQ2023.pdf
  - 36
    
    The Jefferson Lab positron experimental program
    
    Speaker: Eric Voutier
    
    Low-Q-EV.pdf
    
    Low-Q-EV.pptx
- Discussion and closing
  
  Conclusion_LowQ-3.pdf
Saturday 20 May
- Muonic-Atom Theory Initiative (MuASTI)
  
  lowq_birse.pdf
  
  Pascalutsa_MuASTI_Crete.pdf
  - 37
    
    Introduction and structure
    
    Speakers: Carl Carlson (College of William and Mary/JGU-Mainz), Franziska Hagelstein (JGU Mainz & PSI), Dr Vladimir Pascalutsa (University of Mainz)
- 11:30
  
  Coffee
- 14:30
  
  The Oldest Olive Tree and Winery Tour
- 19:00
  
  Dinner
Sunday 21 May
- 07:00
  
  Departure