Deeply virtual compton scattering and meson production at JLab/CLAS

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Abstract

This report reviews the recent experimental results from the CLAS collaboration (Hall B of Jefferson Lab, or JLab) on Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Production (DVMP) and discusses their interpretation in the framework of Generalized Parton Distributions (GPDs). The impact of the experimental data on the applicability of the GPD mechanism to these exclusive reactions is discussed. Initial results obtained from JLab 6 GeV data indicate that DVCS might already be interpretable in this framework while GPD models fail to describe the exclusive meson production (DVMP) data with the GPD parameterizations presently used. An exception is the φ meson production for which the GPD mechanism appears to apply. The recent global analyses aiming to extract GPDs from fitting DVCS CLAS and world data are discussed. The GPD experimental program at CLAS12, planned with the upcoming 12 GeV upgrade of JLab, is briefly presented.

Original languageEnglish
Title of host publication19th Particles and Nuclei International Conference, PANIC11
Pages136-140
Number of pages5
DOIs
StatePublished - 2012
Event19th Particles and Nuclei International Conference, PANIC11 - Cambridge, MA, United States
Duration: 24 Jul 201129 Jul 2011

Publication series

NameAIP Conference Proceedings
Volume1441
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference19th Particles and Nuclei International Conference, PANIC11
Country/TerritoryUnited States
CityCambridge, MA
Period24/07/1129/07/11

Keywords

  • Deeply Virtual Compton Scattering
  • Deeply Virtual Meson Production
  • Generalized Parton Distributions
  • lepton-nucleon scattering
  • nucleon structure

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