标题： 大型动量有效理论中准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： 我们完成了在强子动量的领先精度下，使用大动量有效理论（LaMET）提取部分子分布函数（PDFs）的过程。 我们推导了存在混合情况下的准PDFs的一般因子化公式，并给出了对应于$\mathcal O(\alpha_s)$的硬匹配核，适用于无极化和极化夸克和胶子的准PDFs。 我们的计算是在与正则化无关的动量减法方案中进行的。 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PDFs与正常PDFs匹配，因此可用于从格点模拟中提取味单态夸克PDFs以及胶子PDFs。 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.