Single transverse-spin asymmetry in Drell-Yan lepton angular distribution
High Energy Physics - Phenomenology
2016-09-06 v1
Abstract
We calculate a single transverse-spin asymmetry for the Drell-Yan lepton-pair's angular distribution in perturbative QCD. At leading order in the strong coupling constant, the asymmetry is expressed in terms of a twist-3 quark-gluon correlation function T_F^{(V)}(x_1,x_2). In our calculation, the same result was obtained in both light-cone and covariant gauge in QCD, while keeping explicit electromagnetic current conservation for the virtual photon that decays into the lepton pair. We also present a numerical estimate of the asymmetry and compare the result to an existing other prediction.
Cite
@article{arxiv.hep-ph/0108179,
title = {Single transverse-spin asymmetry in Drell-Yan lepton angular distribution},
author = {Daniel Boer and Jianwei Qiu},
journal= {arXiv preprint arXiv:hep-ph/0108179},
year = {2016}
}
Comments
15 pages, Revtex, 5 Postscript figures, uses aps.sty, epsfig.sty