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arxiv: hep-ph/0609007 · v2 · submitted 2006-09-01 · ✦ hep-ph

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Reducing full one-loop amplitudes to scalar integrals at the integrand level

Giovanni Ossola , Costas G.Papadopoulos , Roberto Pittau
Authors on Pith no claims yet
classification ✦ hep-ph
keywords one-loopamplitudefullintegralsscalaramplitudesanalyticalappealing
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We show how to extract the coefficients of the 4-, 3-, 2- and 1-point one-loop scalar integrals from the full one-loop amplitude of arbitrary scattering processes. In a similar fashion, also the rational terms can be derived. Basically no information on the analytical structure of the amplitude is required, making our method appealing for an efficient numerical implementation

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