Lattice QCD Calculations of Transverse-Momentum-Dependent Soft Function through Large-Momentum Effective Theory

被引：49

作者：

Zhang, Qi-An ^{[1
]}

Hua, Jun ^{[2
]}

Huo, Yikai ^{[2
,3
]}

Ji, Xiangdong ^{[1
,4
]}

Liu, Yizhuang ^{[1
]}

Liu, Yu-Sheng ^{[1
]}

Schlemmer, Maximilian ^{[5
]}

Schafer, Andreas ^{[5
]}

Sun, Peng ^{[6
]}

Wang, Wei ^{[2
]}

Yang, Yi-Bo ^{[7
,8
,9
]}

机构：

[1] Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai Key Lab Particle Phys & Cosmol, MOE Key Lab Particle Astrophys & Cosmol, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Phys & Astron, MOE Key Lab Particle Astrophys & Cosmol, INPAC,Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China

[3] Shanghai Jiao Tong Univ, Zhiyuan Coll, Shanghai 200240, Peoples R China

[4] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[5] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[6] Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China

[7] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China

[8] UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China

[9] Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 19期

基金：

美国国家科学基金会;

关键词：

GROUND-STATE PROPERTIES; NUCLEAR; CLUSTERS; DYNAMICS; MODEL;

D O I：

10.1103/PhysRevLett.125.192001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 pseudoscalar 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.

引用

页数：12

共 46 条

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