Deeply virtual compton scattering from the neutron with CLAS and CLAS12

Sokhan, D. (2014) Deeply virtual compton scattering from the neutron with CLAS and CLAS12. Physics of Particles and Nuclei, 45(1), pp. 170-172. (doi:10.1134/S1063779614010961)

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Publisher's URL: http://dx.doi.org/10.1134/S1063779614010961

Abstract

Generalised Parton Distributions (GPDs) offer an insight into the three-dimensional structure of the nucleon and its internal dynamics, relating the longitudinal momentum of quarks to their transverse position. A very effective means of accessing GPDs is via measurements of cross-sections and polarisation-asymmetries in Deeply Virtual Compton Scattering (DVCS). In particular, the beam-spin asymmetry (BSA) in DVCS from the neutron is especially sensitive to angular momentum of the up- and down-quarks, and its measurement therefore has potential to shed important light on the puzzle of nucleon spin. We present a preliminary extraction of BSA from a recent experiment using a 6 GeV electron beam and the CLAS detector at Jefferson Laboratory and introduce the Central Neutron Detector to be integrated with CLAS12 for the exclusive measurement of neutron DVCS at 11 GeV, made possible by the Jefferson Lab upgrade.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Sokhan, Dr Daria
Authors: Sokhan, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physics of Particles and Nuclei
Publisher:Springer US
ISSN:1063-7796
ISSN (Online):1531-8559

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
570711Nuclear Physics GroupDavid IrelandScience & Technologies Facilities Council (STFC)ST/J000175/1P&A - PHYSICS & ASTRONOMY