Nuclear Enhanced Higher-Twist Effects in the Drell-Yan Process

Abstract

We calculate the Drell-Yan cross section, resolving the full kinematics of the lepton pair, at high transverse momentum for hadron nucleus collisions. We use the general framework of Luo, Qiu and Sterman to calculate double scattering contributions that are of twist-4 and demonstrate their nuclear enhancement. By comparing single and double scattering at RHIC energies we find that double scattering gives contributions of comparable size. We also show that the angular dependence of the Drell-Yan pair discriminates between the various double scattering contributions.

30 pages LaTeX, 32 eps-files in 12 figures

References in corpus (3)

• Parton energy loss limits and shadowing in Drell-Yan dimuon production
• Transverse Momentum Dependence of the Landau-Pomeranchuk-Migdal Effect
• Angular Dependence of the Nuclear Enhancement of Drell-Yan Pairs

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