The Transversity Function and Double Spin Azimuthal Asymmetry in Semi-Inclusive Pion Leptoproduction
High Energy Physics - Phenomenology
2009-11-07 v4
Abstract
We show that the transverse momentum dependent transversity function is proportional to the longitudinal polarization of a quark in a transversely polarized proton. This result suggests an alternative, convenient method for determining transversity, without knowing unusual fragmentation functions. The method consists of measuring the double spin azimuthal asymmetry in semi-inclusive pion leptoproduction by a transversely polarized proton target. The asymmetry, which is twist 3, is estimated to be more than 10% under the most favorable conditions. The experiment we suggest is feasible at facilities like DESY and CERN.
Keywords
Cite
@article{arxiv.hep-ph/0207089,
title = {The Transversity Function and Double Spin Azimuthal Asymmetry in Semi-Inclusive Pion Leptoproduction},
author = {Elvio Di Salvo},
journal= {arXiv preprint arXiv:hep-ph/0207089},
year = {2009}
}
Comments
extended version; to appear on Int. Jou. Mod. Phys. A