A toy model for generalised parton distributions
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We give the results of a simple model for the diagonal and off-diagonal valence quark distributions of a pion. We show that structure can be implemented in a gauge-invariant manner. This explicit model questions the validityof the momentum sum rule, and gives an explicit counter-example to the Wandzura-Wilczek ansatz for twist-3 GPD's.
Cite
@article{arxiv.hep-ph/0507281,
title = {A toy model for generalised parton distributions},
author = {J. R. Cudell and F. Bissey and J. Cugnon and M. Jaminon and J. P. Lansberg and P. Stassart},
journal= {arXiv preprint arXiv:hep-ph/0507281},
year = {2007}
}
Comments
11 pages, presented at HADRONIC PHYSICS (HLPR 2004): Joint Meeting-Heidelberg-Liege-Paris-Rostock, Spa, Belgium, 16-18 December 2004, 11 pages, 11 figures, LaTeX