部分子分布与格点QCD计算：一份社区白皮书
高能物理 - 唯象学
2018-04-18 v3 高能物理 - 格点
摘要
在量子色动力学（QCD）框架下，部分子分布函数（PDFs）量化了强子的动量与自旋如何分配于其夸克与胶子组分之间。确定PDFs存在两种主要途径。第一种基于QCD因子化定理，对一组合适的硬散射测量（常利用多种强子可观测量）进行QCD分析。第二种基于PDFs的第一性原理算符定义，利用格点QCD直接计算某些PDF相关量，如矩。受两种方法近期进展的推动，本文概述了用于确定极化与非极化质子PDFs及其矩的格点QCD与全局分析技术。我们提供了基准数值以验证当前与未来的格点QCD计算，并阐释其如何用于降低当前非极化与极化全局分析中的PDF不确定性。本文档是建立两领域共同语言、促进对话并进一步深化PDFs认知的第一步。
引用
@article{arxiv.1711.07916,
title = {Parton distributions and lattice QCD calculations: a community white paper},
author = {Huey-Wen Lin and Emanuele R. Nocera and Fred Olness and Kostas Orginos and Juan Rojo and Alberto Accardi and Constantia Alexandrou and Alessandro Bacchetta and Giuseppe Bozzi and Jiunn-Wei Chen and Sara Collins and Amanda Cooper-Sarkar and Martha Constantinou and Luigi Del Debbio and Michael Engelhardt and Jeremy Green and Rajan Gupta and Lucian A. Harland-Lang and Tomomi Ishikawa and Aleksander Kusina and Keh-Fei Liu and Simonetta Liuti and Christopher Monahan and Pavel Nadolsky and Jian-Wei Qiu and Ingo Schienbein and Gerrit Schierholz and Robert S. Thorne and Werner Vogelsang and Hartmut Wittig and C. -P. Yuan and James Zanotti},
journal= {arXiv preprint arXiv:1711.07916},
year = {2018}
}
备注
80 pages, 15 figures, 28 tables, minor typos corrected, published in Progress in Particle and Nuclear Physics