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Constraining gluon poles
Anikin, I. V. und Teryaev, O. V. (2015) Constraining gluon poles. arXiv.org.Veröffentlichungsdatum dieses Volltextes: 14 Jan 2016 14:58
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.33181
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Zusammenfassung
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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| Dokumentenart | Artikel | ||||
| Titel eines Journals oder einer Zeitschrift | arXiv.org | ||||
| Datum | 2015 | ||||
| Institutionen | Nicht ausgewählt | ||||
| Identifikationsnummer |
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| Stichwörter / Keywords | Factorization theorem, Gauge invariance, Drell-Yan process | ||||
| Dewey-Dezimal-Klassifikation | 500 Naturwissenschaften und Mathematik > 530 Physik | ||||
| Status | Veröffentlicht | ||||
| Begutachtet | Nein, diese Version wurde noch nicht begutachtet (bei preprints) | ||||
| An der Universität Regensburg entstanden | Ja | ||||
| URN der UB Regensburg | urn:nbn:de:bvb:355-epub-331817 | ||||
| Dokumenten-ID | 33181 |

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