论文标题
nnlo的准parton分布功能：风味非对角线夸克贡献
Quasi parton distribution functions at NNLO: flavor non-diagonal quark contributions
论文作者
论文摘要
我们在大动量有效理论（lamet）中介绍了准Parton分布函数（Quasi-PDFS）的近临界阶（NNLO）计算。我们专注于风味非对角线夸克夸克通道，并在修饰的最小减法方案中以NNLO的精度进行了层次分解。得出了准PDF和灯锥PDF之间的匹配系数。这提供了对准PDF进行完整的NNLO分析的第一步，并更好地了解QCD的第一原理的核子结构。
We present a next-to-next-to-leading order (NNLO) calculation of the quasi parton distribution functions (Quasi-PDFs) in the large momentum effective theory (LaMET). We focus on the flavor non-diagonal quark-quark channel and demonstrate the LaMET factorization at the NNLO accuracy in the modified minimal subtraction scheme. The matching coefficient between the quasi-PDF and the light-cone PDF is derived. This provides a first step towards a complete NNLO analysis of quasi-PDFs and to better understand the nucleon structures from the first principle of QCD.
