Drell-Yan Massive Lepton-Pair's Angular Distributions at Large $Q_T$
高能物理 - 唯象学
2011-03-23 v1 核理论
摘要
By measuring Drell-Yan massive lepton-pair's angular distributions, we can identify the polarization of the virtual photon of invariant mass which decays immediately into the lepton-pair. In terms of a modified QCD factorization formula for Drell-Yan process, which is valid even if , we calculate the massive lepton-pair's angular distributions at large . We find that the virtual photons produced at high are more likely to be transversely polarized. We discuss the implications of this finding to the J/ mesons' polarization measured recently at Fermilab.
引用
@article{arxiv.hep-ph/0102198,
title = {Drell-Yan Massive Lepton-Pair's Angular Distributions at Large $Q_T$},
author = {Jianwei Qiu and Ricardo Rodriguez and Xiaofei Zhang},
journal= {arXiv preprint arXiv:hep-ph/0102198},
year = {2011}
}
备注
Latex, 10 pages including 4 figures