The OPP method to compute one-loop amplitudes at the Integrand Level

by Roberto Pittau (Turin U. & INFN, Turin)

Thursday 17 Jan 2008, 11:00 → 12:00 Europe/Zurich

1/1-025 (CERN)

Part I: discussion of recent papers/events

Part II: Talk by Roberto Pittau: I describe a recently proposed method (OPP) to extract the coefficients of the contributing scalar one-loop integrals from a (sub)-amplitude. Basically, no analytical information on the structure of the amplitude is needed, allowing for a purely numerical implementation of the algorithm to automatically perform one-loop calculation both in QCD and in the EW Theory. A numerical code (CutTools) is also presented, implementing the described procedure.