Title
Geometry of gauge links in operator definitions of transverse-momentum dependent PDFs: A comparative view Geometry of gauge links in operator definitions of transverse-momentum dependent PDFs: A comparative view
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Subject
Physics
Source (journal)
arXiv
Volume/pages
(2011) , p. 1-9
Carrier
E-only publicatie
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Different approaches to the problem of a gauge-invariant operator definition of transverse-momentum dependent parton densities (TMDs) are reviewed and compared from the point of view of their compatibility with the operator definition of collinear (integrated) parton distribution functions. In particular, geometry of the longitudinal and transverse gauge links (Wilson lines) both in unsubtracted quark TMDs and in the associate soft factors is addressed. A possible connection between different operator definitions is also discussed.
E-info
https://repository.uantwerpen.be/docman/iruaauth/28f8e8/31943eb3233.pdf
Handle