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 language||English (US)|
|Journal||Proceedings of Science|
|State||Published - Jan 1 2019|
|Event||27th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2019 - Torino, Italy|
Duration: Apr 8 2019 → Apr 12 2019
ASJC Scopus subject areas