Discussion on the recent proton-DVCS results of Jefferson Lab

Abstract

We present the recent data issued from the Halls A and B of Jefferson Laboratory for the Deep Virtual Compton Scattering Process on the proton. An important set of data for beam spin asymmetries, unpolarized cross sections and differences of polarized cross sections have been obtained. We modestly attempt a first "global" analysis of these three observables at a single $<x_B>$, $<Q^2>$ and $<-t>$ kinematic point. We find that it is extremely challenging to describe simultaneously these data in the framework of a few Generalized Parton Distributions models.

arXiv commentproceeding of the Photon2007 conference (International Conference on the Structure and Interactions of the Photon, Paris 9-13 July 2007)

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Cited by in corpus (4)

• Deeply virtual Compton scattering at small x_B and the access to the GPD H
• Sum rules and dualities for generalized parton distributions: is there a holographic principle?
• Exclusive ${\rho }^0$ electroproduction on the proton at CLAS
• Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES