Genuine twist-3 contributions to the generalized parton distributions from instantons
High Energy Physics - Phenomenology
2007-05-23 v2
Abstract
The genuine twist-3 quark-gluon contributions to the Generalized Parton Distributions (GPDs) are estimated in the model of the instanton vacuum. These twist-3 effects are found to be parametrically suppressed relative to the ``kinematical'' twist-3 ones due to the small packing fraction of the instanton vacuum. We derive exact sum rules for the twist-3 GPDs.
Keywords
Cite
@article{arxiv.hep-ph/0212372,
title = {Genuine twist-3 contributions to the generalized parton distributions from instantons},
author = {D. V. Kiptily and M. V. Polyakov},
journal= {arXiv preprint arXiv:hep-ph/0212372},
year = {2007}
}
Comments
17 pages