Angular Distribution of Drell Yan Pairs in p+A at LHC

Abstract

We discuss the angular distribution of dilepton pairs in p+A collisions at LHC at low momentum transfer and transverse momentum. This includes helicity amplitudes and angular coefficients as well as a look at the Lam-Tung sum rule. We use leading twist NLO calculations and higher twist corrections by double scattering in large nuclei.

Comments: 5 pages, 5 figures, uses cernrep.cls; contribution to the CERN Yellow Report on "Hard Probes in Heavy Ion Collions at LHC"