Generalized parton correlation functions for a spin-1/2 hadron
Abstract
The fully unintegrated, off-diagonal quark-quark correlator for a spin-1/2 hadron is parameterized in terms of so-called generalized parton correlation functions. Such objects, in particular, can be considered as mother distributions of generalized parton distributions on the one hand and transverse momentum dependent parton distributions on the other. Therefore, our study provides new, model-independent insights into the recently proposed nontrivial relations between generalized and transverse momentum dependent parton distributions. We find that none of these relations can be promoted to a model-independent status. As a by-product we obtain the first complete classification of generalized parton distributions beyond leading twist. The present paper is a natural extension of our previous corresponding analysis for spin-0 hadrons.
Keywords
Cite
@article{arxiv.0906.5323,
title = {Generalized parton correlation functions for a spin-1/2 hadron},
author = {S. Meissner and A. Metz and M. Schlegel},
journal= {arXiv preprint arXiv:0906.5323},
year = {2009}
}
Comments
41 pages, 3 figures; v2: added reference