Hyperon Polarization in Inclusive Hadronic Production
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
A QCD formula for the polarization in the large-p_T \Lambda hyperon production in the unpolarized nucleon-nucleon collision at large x_F is derived. We focus on the mechanism in which the chiral-odd spin-independent twist-3 quark distribution E_F(x,x) becomes the source of the transversely polarized quarks fragmenting into the polarized \Lambda. A simple model estimate for that contribution shows the possibility that it gives rise to a sizable \Lambda polarization.
Cite
@article{arxiv.hep-ph/0012005,
title = {Hyperon Polarization in Inclusive Hadronic Production},
author = {Y. Kanazawa and Yuji Koike},
journal= {arXiv preprint arXiv:hep-ph/0012005},
year = {2009}
}
Comments
5 pages in LaTex with 1 figure in EPS file. Proceedings of the talk presented at SPIN2000, Osaka, Oct. 16-21, 2000. Figures corrected