Partonic Interpretation of Generalized Parton Distributions
High Energy Physics - Phenomenology
2015-05-19 v2
Abstract
Generalized Parton Distributions describe, within QCD factorization, the non perturbative component in the amplitudes for deeply virtual exclusive processes. However, in order for a partonic interpretation to hold, semi-disconnected diagrams should not contribute. We show that this condition is not satisfied for non-forward kinematics at leading order, and that gluon mediated re-interactions are essential for a consistent description in terms of parton degrees of freedom.
Cite
@article{arxiv.1006.0213,
title = {Partonic Interpretation of Generalized Parton Distributions},
author = {Gary R. Goldstein and Simonetta Liuti},
journal= {arXiv preprint arXiv:1006.0213},
year = {2015}
}
Comments
4 pages, 3 figures, replaced figure 2, revised conclusions, added references