Nuclear dependences of azimuthal asymmetries in the Drell-Yan process
High Energy Physics - Phenomenology
2015-01-27 v2 Nuclear Theory
Abstract
We study nuclear dependences of azimuthal asymmetries in the Drell-Yan lepton pair production in nucleon-nucleus collisions with polarized nucleons.We use the "maximal two-gluon correlation approximation", so that we can relate the transverse momentum dependent quark distribution in a nucleus to that in a nucleon by a convolution with a Gaussian broadening.We use the Gaussian ansatz for the transverse momentum dependence of such quark distribution functions,and obtain the numerical results for the nuclear dependences.These results show that the averaged azimuthal asymmetries are suppressed.
Keywords
Cite
@article{arxiv.1308.3746,
title = {Nuclear dependences of azimuthal asymmetries in the Drell-Yan process},
author = {Long Chen and Jian-hua Gao and Zuo-tang Liang},
journal= {arXiv preprint arXiv:1308.3746},
year = {2015}
}
Comments
17 pages, 2 figures, Published version in PRC