One-Loop Multi-Parton Amplitudes with a Vector Boson for the LHC

/ Authors

C. Berger, L. Mit, Z. Bern, L. Dixon, F. Cordero, D. Forde, H. Ita, D. Kosower, S. Saclay, D. Maître

/ Abstract

In this talk, we present the first, numerically stable, results for the one-loop amplitudes needed for computing W; Z + 3 jet cross sections at the LHC to next-to-leading order in the QCD coupling. We implemented these processes in BlackHat, an automated program based on on-shell methods. These methods scale very well with increasing numbers of external partons, and are applicable to a wide variety of problems of phenomenological interest at the LHC.