RENORMALIZATION-GROUP ANATOMY OF TRANSVERSE-MOMENTUM DEPENDENT PARTON DISTRIBUTION FUNCTIONS IN QCD
2009 ◽
Vol 24
(35n37)
◽
pp. 2913-2923
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Keyword(s):
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.
2015 ◽
Vol 37
◽
pp. 1560022
2012 ◽
Vol 20
◽
pp. 92-108
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2008 ◽
Vol 802
(1-2)
◽
pp. 146-179
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2017 ◽
Vol 32
(19n20)
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pp. 1750121
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2013 ◽
Vol 726
(4-5)
◽
pp. 795-801
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2010 ◽
Vol 840
(1-2)
◽
pp. 379-404
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