Sivers and Boer-Mulders functions in Light-Cone Quark Models
Abstract
Results for the naive-time-reversal-odd quark distributions in a light-cone quark model are presented. The final-state interaction effects are generated via single-gluon exchange mechanism. The formalism of light-cone wave functions is used to derive general expressions in terms of overlap of wave-function amplitudes describing the different orbital angular momentum components of the nucleon. In particular, the model predictions show a dominant contribution from S- and P-wave interference in the Sivers function and a significant contribution also from the interference of P and D waves in the Boer-Mulders function. The favourable comparison with existing phenomenological parametrizations motivates further applications to describe azimuthal asymmetries in hadronic reactions.
Keywords
Cite
@article{arxiv.1001.5398,
title = {Sivers and Boer-Mulders functions in Light-Cone Quark Models},
author = {B. Pasquini and F. Yuan},
journal= {arXiv preprint arXiv:1001.5398},
year = {2014}
}
Comments
references and explanations added; version to appear in Phys. Rev. D