Generalised parton distributions at small x
High Energy Physics - Phenomenology
2015-05-13 v2
Abstract
We justify the practical use of the Shuvaev integral transform approach to calculate the skewed distributions, needed to describe diffractive processes, directly from the conventional diagonal global parton distributions. We address doubts which have been raised about this procedure. We emphasise that the approach, on the one hand, satisfies all theoretical reqirements, and, on the other hand, is consistent with DVCS data at NLO. We construct an easily accessible package for the computation of these skewed distributions.
Cite
@article{arxiv.0812.3558,
title = {Generalised parton distributions at small x},
author = {A. D. Martin and C. Nockles and M. G. Ryskin and A. G. Shuvaev and T. Teubner},
journal= {arXiv preprint arXiv:0812.3558},
year = {2015}
}
Comments
21 pages, 10 figures. New title. Extra Fig. 2 and extra Section 5 to compare with alternative treatment of GPDs. Numerical results unchanged. To be published in EPJC