D-dimensional unitarity cut method

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dc.creatorAnastasiou, Charalampos
dc.creatorBritto, Ruth
dc.creatorFeng, Bo
dc.creatorKunszt, Zoltan
dc.creatorMastrolia, Pierpaolo
dc.date2006-09-19
dc.date2006-09-27
dc.date.accessioned2026-07-07T10:25:28Z
dc.date.available2026-07-07T10:25:28Z
dc.descriptionWe develop a unitarity method to compute one-loop amplitudes with massless propagators in d=4-2*epsilon dimensions. We compute double cuts of the loop amplitudes via a decomposition into a four-dimensional and a -2*epsilon-dimensional integration. The four-dimensional integration is performed using spinor integration or other efficient techniques. The remaining integral in -2*epsilon dimensions is cast in terms of bubble, triangle, box, and pentagon master integrals using dimensional shift identities. The method yields results valid for arbitrary values of epsilon.
dc.description4 pages. v2: references changed
dc.identifierhttps://arxiv.org/abs/hep-ph/0609191
dc.identifierhttp://arxiv.org/abs/hep-ph/0609191
dc.identifierPhys.Lett.B645:213-216,2007
dc.identifierdoi:10.1016/j.physletb.2006.12.022
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176551
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleD-dimensional unitarity cut method
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