Nucleon Form Factors from Generalized Parton Distributions
High Energy Physics - Phenomenology
2009-08-06 v2
Abstract
We discuss the links between Generalized Parton Distributions (GPDs) and elastic nucleon form factors. These links, in the form of sum rules, represent powerful constraints on parametrizations of GPDs. A Regge parametrization for GPDs at small momentum transfer, is extended to the large momentum transfer region and it is found to describe the basic features of proton and neutron electromagnetic form factor data. This parametrization is used to estimate the quark contribution to the nucleon spin.
Cite
@article{arxiv.hep-ph/0410251,
title = {Nucleon Form Factors from Generalized Parton Distributions},
author = {M. Guidal and M. V. Polyakov and A. V. Radyushkin and M. Vanderhaeghen},
journal= {arXiv preprint arXiv:hep-ph/0410251},
year = {2009}
}
Comments
18 pages, 5 figures, replaced with published version