Generalized parton distributions in a meson cloud model
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We present a model calculation of the generalized parton distributions where the nucleon is described by a quark core surrounded by a mesonic cloud. In the one-meson approximation, we expand the Fock state of the physical nucleon in a series involving a bare nucleon and two-particle, meson-baryon, states. We discuss the role of the different Fock-state components of the nucleon by deriving a convolution formalism for the unpolarized generalized parton distributions, and showing predictions at different kinematics.
Cite
@article{arxiv.hep-ph/0607213,
title = {Generalized parton distributions in a meson cloud model},
author = {B. Pasquini and S. Boffi},
journal= {arXiv preprint arXiv:hep-ph/0607213},
year = {2008}
}
Comments
7 pages, 3 figures; Invited talk at the Fifth International Conference on Perspectives in Hadronic Physics, Miramare - Trieste (Italy), 22-26 May 2006