Generalised Unitarity for Dimensionally Regulated Amplitudes

Abstract

We present a novel set of Feynman rules and generalised unitarity cut-conditions for computing one-loop amplitudes via d-dimensional integrand reduction algorithm. Our algorithm is suited for analytic as well as numerical result, because all ingredients turn out to have a four-dimensional representation. We will apply this formalism to NLO QCD corrections.

Comments: Presented at SILAFAE 2014, 24-28 Nov, Ruta N, Medellin, Colombia