Title
Renormalization, Wilson lines, and transverse-momentum-dependent parton-distribution functions Renormalization, Wilson lines, and transverse-momentum-dependent parton-distribution functions
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
77(2008) :9 , 6 p.
ISSN
0556-2821
1550-7998
Article Reference
094001
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Abstract
We perform an analysis of transverse-momentum dependent parton-distribution functions, making use of their renormalization properties in terms of their leading-order anomalous dimensions. We show that the appropriate Wilson line in the light cone gauge, associated with such quantities, is a cusped one at light cone infinity. To cancel the ensuing cusp anomalous dimension, we include in the definition of the transverse-momentum dependent parton-distribution functions an additional soft counter term (gauge link) along that cusped transverse contour. We demonstrate that this is tantamount to an "intrinsic (Coulomb) phase," which accumulates the full gauge history of the color-charged particle.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/786b76/8984.pdf
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