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Constraining gluon poles
Anikin, I. V. and Teryaev, O. V. (2015) Constraining gluon poles. arXiv.org.Date of publication of this fulltext: 14 Jan 2016 14:58
Article
DOI to cite this document: 10.5283/epub.33181
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Abstract
In this letter, we revise the QED gauge invariance for the hadron tensor of Drell-Yan type processes with the transversely polarized hadron. We perform our analysis within the Feynman gauge for gluons and make a comparison with the results obtained within the light-cone gauge. We demonstrate that QED gauge invariance leads, first, to the need of a non-standard diagram and, second, to the absence ...
In this letter, we revise the QED gauge invariance for the hadron tensor of Drell-Yan type processes with the transversely polarized hadron. We perform our analysis within the Feynman gauge for gluons and make a comparison with the results obtained within the light-cone gauge. We demonstrate that QED gauge invariance leads, first, to the need of a non-standard diagram and, second, to the absence of gluon poles in the correlators ⟨ψ¯γ⊥A+ψ⟩ related traditionally to dT(x,x)/dx. As a result, these terms disappear from the final QED gauge invariant hadron tensor. We also verify the absence of such poles by analysing the corresponding light-cone Dirac algebra.
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Details
| Item type | Article | ||||
| Journal or Publication Title | arXiv.org | ||||
| Date | 2015 | ||||
| Institutions | UNSPECIFIED | ||||
| Identification Number |
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| Keywords | Factorization theorem, Gauge invariance, Drell-Yan process | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | No, this version has not been refereed yet (as with preprints) | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-331817 | ||||
| Item ID | 33181 |

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