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Title
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Drell-Yan hadron tensor : contour gauge and gluon propagator
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Author
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Abstract
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| We consider the gauge invariant Drell-Yan hadron tensor which includes the standard and nonstandard diagram contributions. The nonstandard diagram contribution appeared owing to the complexity of the twist three B-V (x(1), x(2))-function where the gluon pole manifests. We use the contour gauge conception which allows us to fix easily the spurious uncertainties in the gluon propagator. The contour gauge condition is generated by the corresponding Wilson lines in both the standard and nonstandard diagrams. We demonstrate the substantial role of the nonstandard diagram for forming of the relevant contour in the Wilson path-ordered exponential that leads to the spurious singularity fixing. |
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Language
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English
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Source (journal)
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PHYSICAL REVIEW D
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Publication
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2017
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DOI
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10.1103/PHYSREVD.95.034032
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Volume/pages
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95
:3
(2017)
, 17 p.
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Article Reference
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034032
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ISI
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000402131700003
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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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