Deeply Virtual Compton Scattering at JLab Hall A
Eric Voutier
TL;DR
This study investigates deeply virtual Compton scattering at JLab, providing evidence for factorization at relatively low Q2 and exploring quark angular momentum through neutron measurements, advancing understanding of nucleon structure.
Contribution
It presents experimental validation of GPD factorization at Q2 as low as 2 GeV2 and offers preliminary insights into quark angular momentum via neutron data.
Findings
Support for GPD factorization at Q2 as low as 2 GeV2
Sensitivity to quark angular momentum in neutron data
First measurements of (e,e'gamma) cross sections in this regime
Abstract
The deeply virtual Compton scattering reaction has been investigated in the Hall A of the Jefferson Laboratory by measuring longitudinally polarized (e,e'gamma) cross sections, in the valence quark region, for protons and neutrons. In the proton channel, experimental results strongly support the factorization of the cross section at Q2 as low as 2 GeV2, opening the path to systematic measurements of generalized parton distributions (GPDs). In the neutron case, preliminary data show sensitivity to the angular momentum of quarks. http://indico.cern.ch/contributionDisplay.py?contribId=89&sessionId=12&confId=9499
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies