Drell-Yan对核增强的角依赖性
高能物理 - 唯象学
2008-11-26 v3 核理论
摘要
我们计算了质子-核反应中产生的Drell-Yan对角度分布中的核增强效应。核效应编码在普适的twist-4部分子关联函数中。我们发现,轻子对分布的角系数的Lam-Tung关系对于双硬贡献成立,但对于软-硬贡献则不成立。我们还预测,在RHIC能量下核增强效应可能很大。
引用
@article{arxiv.hep-ph/9907567,
title = {Angular Dependence of the Nuclear Enhancement of Drell-Yan Pairs},
author = {R. J. Fries and B. Müller and A. Schäfer and E. Stein},
journal= {arXiv preprint arXiv:hep-ph/9907567},
year = {2008}
}
备注
4 pages LaTeX, 5 figures; v2: discussion in the summary extended, some references added; v3: manuscript somewhat shortened, eq. (9) added, accepted for publication in Phys. Rev. Lett