Modeling Nucleon Generalized Parton Distributions
High Energy Physics - Phenomenology
2013-06-05 v2
Abstract
We discuss building models for nucleon generalized parton distributions (GPDs) H and E that are based on the formalism of double distributions (DDs). We found that the usual "DD+D-term" construction should be amended by an extra term, \xi E^1_+(x,\xi) built from the \alpha/\beta moment of the DD e(\beta,\alpha) that generates GPD E(x,\xi). Unlike the D-term, this function has support in the whole -1 \leq x \leq 1 region, and in general does not vanish at the border points |x|=\xi.
Keywords
Cite
@article{arxiv.1304.2682,
title = {Modeling Nucleon Generalized Parton Distributions},
author = {A. V. Radyushkin},
journal= {arXiv preprint arXiv:1304.2682},
year = {2013}
}
Comments
Minor fixes, version to be published in PRD