Publication
Title
Renormalization-group anatomy of transverse-momentum dependent parton distribution functions in qcd
Author
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.
Language
English
Source (journal)
Modern physics letters A. - Singapore
Publication
Singapore : 2009
ISSN
0217-7323
Volume/pages
24:35-37(2009), p. 2913-2923
ISI
000272695600012
Full text (Publisher's DOI)
UAntwerpen
 Faculty/Department Publication type Subject