Title
Renormalization-group anatomy of transverse-momentum dependent parton distribution functions in qcd Renormalization-group anatomy of transverse-momentum dependent parton distribution functions in qcd
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Singapore ,
Subject
Physics
Source (journal)
Modern physics letters A. - Singapore
Volume/pages
24(2009) :35-37 , p. 2913-2923
ISSN
0217-7323
ISI
000272695600012
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
The ultraviolet and rapidity divergences of transverse-momentum dependent parton distribution functions with lightlike and transverse gauge links is studied, also incorporating a soft eikonal factor. We find that in the light-cone gauge with q(-)-independent pole prescriptions extra divergences appear which amount, at one-loop, to a cusp-like anomalous dimension. We show that such contributions are absent when the Mandelstam-Leibbrandt prescription is used. In the first case, the soft factor cancels the anomalous-dimension defect, while in the second case its ultraviolet-divergent part reduces to unity.
E-info
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