Science at the Luminosity Frontier: Jefferson Lab at 22 GeV

Session

Spatial Structure, Mechanical Properties, and Emergent Hadron Mass

11 Dec 2024, 09:00

Auditorium B. Touschek (INFN, Laboratori Nazionali di Frascati)

Conveners

Spatial Structure, Mechanical Properties, and Emergent Hadron Mass

• Roberto Perrino (Istituto Nazionale di Fisica Nucleare)

Spatial Structure, Mechanical Properties, and Emergent Hadron Mass

• Garth Huber (University of Regina)

64. J/psi: JLab22, SoLID, EIC

Lubomir Pentchev (Jefferson Lab)

11/12/2024, 09:00

The charmonium photo/electro-production close to threshold can be used, under certain assumptions, to study the the gluon properties of the nucleon such as gluon form factors, mass radius of the proton, and the anomalous contribution to the proton mass. I will present analysis of the existing JLab J/psi data discussing the possibility of extracting gluon form factors based on some general...

65. EIC for exclusive processes in the region of large x>0.05

Carlos Munoz Camacho

11/12/2024, 09:25

The future Electron-Ion Collider (EIC) will be a powerful tool for studying the internal structure of nucleons and nuclei at low x, where gluons dominate and current knowledge remains limited. Investigating exclusive reactions, such as Deeply Virtual Compton Scattering (DVCS) or Deeply Virtual Meson Production (DVMP), will enable access to the Generalized Parton Distributions (GPDs) of...

66. Meson structure

Rachel Montgomery (University of Glasgow)

11/12/2024, 09:50

This talk will discuss upcoming tagged deep inelastic scattering (TDIS) measurements at Jefferson Lab, which will directly probe the elusive mesonic content of the nucleon. The TDIS experiment will measure low momentum recoiling (and spectator) hadrons in coincidence with deep inelastically scattered electrons from hydrogen (and deuterium) targets. Through use of a recoil detector, a tagging...

32. Resonance Electroexcitations at High Momentum Transfers with Jefferson Lab at 22 GeV

Patrick Achenbach (Jefferson Lab)

11/12/2024, 10:10

On behalf of the CLAS Collaboration

Studies of nucleon resonance electroexcitation amplitudes are providing insight into many facets of strong QCD dynamics. These amplitudes have become available from the analyses of exclusive electroproduction experiments at Jefferson Lab with CLAS in the range of momentum transfers up to 5 GeV$^2$ and are currently extended to momentum transfers up to 10...

13. Nonperturbative approach towards emergent hadron structure and mass at JLab 22

Prof. Adnan Bashir (University of Michoacan and University of Huelva)

11/12/2024, 10:55

Understanding the strong interaction dynamics, which triggers the emergence of hadron mass (EHM), presents a challenging problem within the Standard Model of particle physics. Experimental extraction of electromagnetic and transition form factors of mesons and baryons for increasingly larger virtual photon four-momentum squared (i.e., photon virtuality,) as well as their more complete...

40. Refined Simulations of Double Pion Electroproduction for CLAS22

Alexis Osmond (University of South Carolina)

11/12/2024, 11:20

This presentation covers recent advancements in the refined simulations of double pion electroproduction for CLAS22. Double pion production provides a valuable probe of baryon structure, requiring accurate simulations for proper interpretation of experimental data. The presentation addresses the feasibility of extending the kinematic coverage beyond CLAS12, discussing resolution and acceptance...

38. Inclusive electron scattering in the resonance region at high Q^2

Gabriel Niculescu (James Madison University)

11/12/2024, 11:40

Using Thomas Jefferson's National Accelerator Facility's 10.6 GeV beam
and the CLAS12 large solid angle spectrometer, inclusive electron proton cross sections were measured over a wide kinematic range from the pion threshold up to an invariant mass W of 2.55 GeV, for ten Q^2 bins between 2.5 and 10.4 GeV^2. These results were validated against existing world data set in the overlap region and...

90. Complementary insights into the pseudoscalar meson and baryon structure from Amber

Oleg Denisov (Istituto Nazionale di Fisica Nucleare)

11/12/2024, 12:00

4. Future hypernuclear studies at J-PARC and JLab

Prof. Satoshi N. Nakamura (the University of Tokyo)

11/12/2024, 12:20

At J-PARC, a project to extend the Hadron Experimental Hall is underway, where various nuclear and hadron physics experiments will be conducted. Among them, the precision spectroscopy of $\Lambda$ hypernuclei stands as one of the flagship experiments. Recently, at JLab, new $\Lambda$ hypernuclear experiments using electron beams have been approved, and hypernuclear spectroscopy will be...

34. Double Deeply Virtual Compton Scattering (DDVCS) at 22 GeV

Rafayel Paremuzyan (Jefferson Lab)

11/12/2024, 12:40

One of the main challenges in the extraction of Generalized Parton Distributions (GPDs) from the currently available experimental data is that experimental observables can access only two of three variables, x, ξ, and t, that define the GPDs. The variable 𝑥 is integrated over in the DVCS and TCS amplitudes due to the loop in the “handbag” diagrams. The only information that can be accessed in...