Deeply Virtual Compton Scattering on a Photon and Generalized Parton Distributions in the Photon
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We consider deeply virtual Compton scattering on a photon target, in the generalized Bjorken limit, at the Born order and in the leading logarithmic approximation. We interpret the result as a factorized amplitude of a hard process described by handbag diagrams and anomalous generalized parton distributions in the photon. This anomalous part, with its characteristic ln Q2 dependence, is present both in the DGLAP and in the ERBL regions. As a consequence, these generalized parton distributions of the photon obey DGLAP-ERBL evolution equations with an inhomogeneous term.
Keywords
Cite
@article{arxiv.hep-ph/0611176,
title = {Deeply Virtual Compton Scattering on a Photon and Generalized Parton Distributions in the Photon},
author = {S. Friot and B. Pire and L. Szymanowski},
journal= {arXiv preprint arXiv:hep-ph/0611176},
year = {2008}
}
Comments
9 pages 3 figures. Version 2 to be published in Physics Letters B : more explanation and a few references added in the conclusion