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Title
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Renormalization, Wilson lines, and transverse-momentum-dependent parton-distribution functions
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Author
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Physical review : D : particles, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
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Publication
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Ridge, N.Y.
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American Physical Society
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2008
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ISSN
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1550-7998
[print]
1550-2368
[online]
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DOI
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10.1103/PHYSREVD.77.094001
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Volume/pages
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77
:9
(2008)
, 6 p.
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Article Reference
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094001
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ISI
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000256297000028
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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