One-loop leading logarithms in electroweak radiative corrections: II. Factorization of collinear singularities

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dc.creatorDenner, Ansgar
dc.creatorPozzorini, Stefano
dc.date2001-04-12
dc.date.accessioned2026-07-07T12:26:15Z
dc.date.available2026-07-07T12:26:15Z
dc.descriptionWe discuss the evaluation of the collinear single-logarithmic contributions to virtual electroweak corrections at high energies. More precisely, we proof the factorization of the mass singularities originating from loop diagrams involving collinear virtual gauge bosons coupled to external legs. We discuss, in particular, processes involving external longitudinal gauge bosons, which are treated using the Goldstone-boson equivalence theorem. The proof of factorization is performed within the 't Hooft--Feynman gauge at one-loop order and applies to arbitrary electroweak processes that are not mass-suppressed at high energies. As basic ingredient we use Ward identities for Green functions with arbitrary external particles involving a gauge boson collinear to one of these. The Ward identities are derived from the BRS invariance of the spontaneously broken electroweak gauge theory.
dc.description28 pages, latex
dc.identifierhttps://arxiv.org/abs/hep-ph/0104127
dc.identifierhttp://arxiv.org/abs/hep-ph/0104127
dc.identifierEur.Phys.J.C21:63-79,2001
dc.identifierdoi:10.1007/s100520100721
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214823
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOne-loop leading logarithms in electroweak radiative corrections: II. Factorization of collinear singularities
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