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.
@article{arxiv.0808.0941,
title = {One-Loop Multi-Parton Amplitudes with a Vector Boson for the LHC},
author = {C. F. Berger and Z. Bern and L. J. Dixon and F. Febres Cordero and D. Forde and H. Ita and D. A. Kosower and D. Maitre},
journal= {arXiv preprint arXiv:0808.0941},
year = {2008}
}
Comments
Parallel talk in QCD session of the 34th International Conference on High Energy Physics, Philadelphia, USA, July 2008. 4 pages, LaTeX, 3 eps figures