标题： 大动量有效理论中拟分布函数的完全匹配 显示英文标题

标题： Complete Matching for Quasi-distribution Functions in Large Momentum Effective Theory

摘要： 我们使用大动量有效理论（LaMET）在质子动量下的领头幂次精度下完成了提取部分子分布函数（PDFs）的程序。 我们在存在混合的情况下推导了准PDF的一般因子化公式，并给出了对应于无极化和极化夸克与胶子准PDF的硬匹配核，分别是$\mathcal O(\alpha_s)$。 我们的计算是在一个正则化无关动量减除方案中完成的。 这些结果使我们能够在存在混合的情况下将非微扰重整化的准PDF匹配到普通的PDF上，因此可以用于从格点模拟中提取味单态夸克PDF以及胶子PDF。 显示英文摘要

摘要： We complete the procedure of extracting parton distribution functions (PDFs) using large momentum effective theory (LaMET) at leading power accuracy in the hadron momentum. We derive a general factorization formula for the quasi PDFs in the presence of mixing, and give the corresponding hard matching kernel at $\mathcal O(\alpha_s)$, both for the unpolarized and for the polarized quark and gluon quasi-PDFs. Our calculation is performed in a regularization-independent momentum subtraction scheme. The results allow us to match the nonperturbatively renormalized quasi-PDFs to normal PDFs in the presence of mixing, and therefore can be used to extract flavor-singlet quark PDFs as well as gluon PDFs from lattice simulations.