论文标题
通过大型摩氏有效理论的TMD软功能的晶格-QCD计算
Lattice-QCD Calculations of TMD Soft Function Through Large-Momentum Effective Theory
论文作者
论文摘要
横向momentum依赖性（TMD）软函数是Drell-Yan和其他具有相对较小的横向动量的过程中QCD分解的关键成分。我们在2+1风味CLS动态合奏中介绍了该功能的晶格QCD研究，$ a = 0.098 $ fm。我们通过大型摩肌有效理论中的前阶因化来提取软函数的速度非依赖性（或固有）部分的软函数及其准TMD波函数。我们还基于准TMD波函数的大型摩肌演化，研究了软函数的速度依赖性部分 - 柯林斯 - 传播的进化核---。
The transverse-momentum-dependent (TMD) soft function is a key ingredient in QCD factorization of Drell-Yan and other processes with relatively small transverse momentum. We present a lattice QCD study of this function at moderately large rapidity on a 2+1 flavor CLS dynamic ensemble with $a=0.098$ fm. We extract the rapidity-independent (or intrinsic) part of the soft function through a large-momentum-transfer pseudo-scalar meson form factor and its quasi-TMD wave function using leading-order factorization in large-momentum effective theory. We also investigate the rapidity-dependent part of the soft function---the Collins-Soper evolution kernel---based on the large-momentum evolution of the quasi-TMD wave function.
