Publication
Title
Transverse-momentum parton densities : gauge links, divergences and soft factor
Author
Abstract
We discuss the state-of-the-art of the theory of transverse-momentum dependent parton densities (TMD)s, paying special attention to their renormalization properties, the structure of the gauge links in the operator definition, and the role of the soft factor in the factorization formula within the TMD approach to the semi-inclusive processes. We argue that the use of the lightcone axial gauge offers certain advantages for a consistent definition of TMDs as compared to the off-the-light-cone gauges, or covariant gauges with off-the-lightcone gauge links.
Language
English
Source (journal)
arXiv
Publication
2010
Volume/pages
(2010), p. 1-7
Medium
E-only publicatie
Full text (publishers version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
External links
Record
Identification
Creation 09.01.2015
Last edited 14.03.2016