Lepton angular distributions of Drell-Yan process in pQCD and a geometric approach

Wen Chen Chang, Randall Evan McClellan, Jen Chieh Peng, Oleg Teryaev

Research output: Contribution to journalConference article


The lepton angular distributions of the Drell-Yan process in the fixed-target experiments are investigated by NLO and NNLO perturbative QCD. We present the calculated angular parameters λ, µ, ν and the degree of violation of the Lam-Tung relation, 1−λ −2ν, for the E615 experiment as well as predictions for the COMPASS experiment. Many salient features of transverse momentum and rapidity dependence could be qualitatively understood by a geometric approach.

Original languageEnglish (US)
Article number172
JournalProceedings of Science
StatePublished - Jan 1 2019
Event27th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2019 - Torino, Italy
Duration: Apr 8 2019Apr 12 2019


ASJC Scopus subject areas

  • General

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