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Anikin, I. V. ; Teryaev, O. V.

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.



Involved Institutions


    Details

    Item typeArticle
    Journal or Publication TitlearXiv.org
    Date2015
    InstitutionsUNSPECIFIED
    Identification Number
    ValueType
    1508.00227arXiv ID
    KeywordsFactorization theorem, Gauge invariance, Drell-Yan process
    Dewey Decimal Classification500 Science > 530 Physics
    StatusPublished
    RefereedNo, this version has not been refereed yet (as with preprints)
    Created at the University of RegensburgYes
    URN of the UB Regensburgurn:nbn:de:bvb:355-epub-331817
    Item ID33181

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