Accessing transversity via J/Psi production in polarized p-pbar interactions
High Energy Physics - Phenomenology
2009-11-10 v2
Abstract
We discuss the possibility of a direct access to transversity distributions by measuring the double transverse spin asymmetry A_TT in p pbar --> J/Psi + X --> l^- l^+ + X processes at future GSI-HESR experiments with polarized protons and anti-protons. In the J/Psi resonance production region, with 30 < s < 45 GeV^2, both the cross-section and A_TT are expected to be sufficiently large to allow a measurement of h_1^q(x,M^2); numerical estimates are given.
Cite
@article{arxiv.hep-ph/0403114,
title = {Accessing transversity via J/Psi production in polarized p-pbar interactions},
author = {M. Anselmino and V. Barone and A. Drago and N. N. Nikolaev},
journal= {arXiv preprint arXiv:hep-ph/0403114},
year = {2009}
}
Comments
10 pages, 2 figures. Version accepted for publication in PLB; comments and references added