Collins fragmentation function for pions and kaons in a spectator model
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We calculate the Collins fragmentation function in the framework of a spectator model with pseudoscalar pion-quark coupling and a Gaussian form factor at the vertex. We determine the model parameters by fitting the unpolarized fragmentation function for pions and kaons. We show that the Collins function for the pions in this model is in reasonable agreement with recent parametrizations obtained by fits of the available data. In addition, we compute for the first time the Collins function for the kaons.
Cite
@article{arxiv.0707.3372,
title = {Collins fragmentation function for pions and kaons in a spectator model},
author = {Alessandro Bacchetta and Leonard P. Gamberg and Gary R. Goldstein and Asmita Mukherjee},
journal= {arXiv preprint arXiv:0707.3372},
year = {2008}
}