Transverse parton distribution and fragmentation functions at NNLO: the gluon case

• Published in: The journal of high energy physics Vol. 2020; no. 1; pp. 40 - 32
• Main Authors: Luo, Ming-Xing, Yang, Tong-Zhi, Zhu, Hua Xing, Zhu, Yu Jiao
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.01.2020; Springer Nature B.V; SpringerOpen
• Subjects: Distribution functions; Divergence; Effective Field Theories; Fragmentation; Gluons; High energy physics; Linear polarization; Mathematical analysis; Partons; Perturbative QCD; Quarks; Regular Article - Theoretical Physics; Resummation; Sum rules; Transverse momentum; Yang-Mills theory; Effective Field Theories; Resummation; Perturbative QCD

A bstract We calculate in this paper the perturbative gluon transverse momentum dependent parton distribution functions (TMDPDFs) and fragmentation functions (TMDFFs) using the exponential regulator for rapidity divergences. We obtain results for both unpolarized and linearly polarized distributions...