Nuclear enhanced higher-twist effects in the Drell-Yan process

Fries, R. J. and Schaefer, Andreas and Stein, E. and Mueller, B. (2000) Nuclear enhanced higher-twist effects in the Drell-Yan process. NUCLEAR PHYSICS B, 582 (1-3). pp. 537-570. ISSN 0550-3213

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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. (C) 2000 Elsevier Science B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: LEPTON PAIR PRODUCTION; PARTON DISTRIBUTIONS; ANGULAR-DISTRIBUTION; HADRONIC COLLISIONS; TRANSVERSE-MOMENTUM; DIMUON PRODUCTION; ENERGY-LOSS; DEPENDENCE; DILEPTONS; PIONS; QCD; structure functions; power corrections; nuclear effects
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer
Depositing User: Dr. Gernot Deinzer
Date Deposited: 29 Mar 2022 05:11
Last Modified: 29 Mar 2022 05:11
URI: https://pred.uni-regensburg.de/id/eprint/42263

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