Transverse momentum dependent parton distributions in a light-cone quark model
High Energy Physics - Phenomenology
2010-05-28 v2
Abstract
The leading twist transverse momentum dependent parton distributions (TMDs) are studied in a light-cone description of the nucleon where the Fock expansion is truncated to consider only valence quarks. General analytic expressions are derived in terms of the six amplitudes needed to describe the three-quark sector of the nucleon light-cone wave function. Numerical calculations for the T-even TMDs are presented in a light-cone constituent quark model, and the role of the so-called pretzelosity is investigated to produce a nonspherical shape of the nucleon.
Keywords
Cite
@article{arxiv.0806.2298,
title = {Transverse momentum dependent parton distributions in a light-cone quark model},
author = {B. Pasquini and S. Cazzaniga and S. Boffi},
journal= {arXiv preprint arXiv:0806.2298},
year = {2010}
}
Comments
references added and typos corrected; version to appear in Phys. Rev. D