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

Autor:	Chang, Wen-Chen, McClellan, Randall Evan, Peng, Jen-Chieh, Teryaev, Oleg
Rok vydání:	2019
Předmět:	High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory
Druh dokumentu:	Working Paper
Popis:	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 $\lambda$, $\mu$, $\nu$ and the degree of violation of the Lam-Tung relation, $1-\lambda-2\nu$, 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. Comment: 5 pages, 2 figures; contribution to the proceedings of the XXVII. International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2019), April 8-12, 2019,Torino, Italy
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1907.11356 Zobrazit plný text záznamu View this record from Arxiv