Deeply Virtual Compton Scattering off the Neutron

M. Mazouz et al. (Jefferson Lab Hall A Collaboration)
Phys. Rev. Lett. 99, 242501 – Published 10 December 2007

Abstract

The present experiment exploits the interference between the deeply virtual Compton scattering (DVCS) and the Bethe-Heitler processes to extract the imaginary part of DVCS amplitudes on the neutron and on the deuteron from the helicity-dependent D(e,eγ)X cross section measured at Q2=1.9GeV2 and xB=0.36. We extract a linear combination of generalized parton distributions (GPDs) particularly sensitive to Eq, the least constrained GPD. A model dependent constraint on the contribution of the up and down quarks to the nucleon spin is deduced.

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  • Received 20 August 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.242501

©2007 American Physical Society

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Vol. 99, Iss. 24 — 14 December 2007

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