Nuclear enhanced higher-twist effects in the DrellYan process Academic Article uri icon

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. 2000 Elsevier Science B.V.

published proceedings

  • Nuclear Physics B

author list (cited authors)

  • Fries, R. J., Schfer, A., Stein, E., & Mller, B.

publication date

  • January 1, 2000 11:11 AM