$x_F$ Dependence of Drell-Yan Transverse Moemtum Broadening

Abstract

We analyze $x_F$ dependence of Drell-Yan transverse momentum broadening in hadron-nucleus collisions. In terms of generalized factorization theorem, we show that the $x_F$ dependence of transverse momentum broadening, $\Delta <q_T^2>(x_F)$, can be calculated in perturbative QCD. We demonstrate that $\Delta <q_T^2>(x_F)$ is a good observable for studying the effects of initial-state multiple scattering and extracting quark-gluon correlation functions.

10 pages, 3 figures