Speaker
Qi-An Zhang
(Shanghai Jiao Tong University)
Description
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.
Primary authors
Qi-An Zhang
(Shanghai Jiao Tong University)
Dr
Jun Hua
Mr
Yikai Huo
Xiangdong Ji
(University of Maryland)
Dr
Yizhuang Liu
Yu-Sheng Liu
Maximilian Schlemmer
(University of Regensburg)
Andreas Schäfer
(Regensburg University)
peng sun
(LBNL)
Wei Wang
(SJTU)
Yi-Bo Yang
(中国科学院理论物理研究所)
