Abstract:
The parton distribution functions (PDFs) are important tools of accessing hadron structure. Recently, a twist-4 gluon PDF F(x) has been introduced to explore the gluon condensate and mass structure in the nucleon. In this talk, I will introduce our recent work on the one-loop structure of F(x). The results are obtained in a gauge invariant manner. Our calculations disagree the existence of zero modes in F(x) at one-loop, and reveal the importance of gauge invariance in the calculation of gluon PDFs on the lattice.
Biography：
赵帅，2015年毕业于中国科学院理论物理研究所并获得博士学位，2015年-2018年在上海交通大学粒子与核物理研究所做博士后研究，2018年底至今为美国Old Dominion University (欧道明大学) 和Jefferson Lab (杰斐逊国家实验室) 博士后。目前主要研究兴趣为量子色动力学与核子结构。