Closed-Form Decomposition of One-Loop Massive Amplitudes

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dc.creatorBritto, Ruth
dc.creatorFeng, Bo
dc.creatorMastrolia, Pierpaolo
dc.date2008-03-13
dc.date.accessioned2026-07-07T11:49:04Z
dc.date.available2026-07-07T11:49:04Z
dc.descriptionWe present formulas for the coefficients of 2-, 3-, 4- and 5-point master integrals for one-loop massive amplitudes. The coefficients are derived from unitarity cuts in D dimensions. The input parameters can be read off from any unitarity-cut integrand, as assembled from tree-level expressions, after simple algebraic manipulations. The formulas presented here are suitable for analytical as well as numerical evaluation. Their validity is confirmed in two known cases of helicity amplitudes contributing to gg -> gg and gg -> gH, where the masses of the Higgs and the fermion circulating in the loop are kept as free parameters.
dc.description37 pages
dc.identifierhttps://arxiv.org/abs/0803.1989
dc.identifierhttp://arxiv.org/abs/0803.1989
dc.identifierPhys.Rev.D78:025031,2008
dc.identifierdoi:10.1103/PhysRevD.78.025031
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/203109
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Theory
dc.titleClosed-Form Decomposition of One-Loop Massive Amplitudes
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