A Numerical Unitarity Formalism for One-Loop Amplitudes
High Energy Physics - Phenomenology
2009-04-14 v1
Abstract
The unitarity method for calculating one-loop amplitudes provides algorithms of polynomial complexity. This is primarily beneficial for the computation of multi-leg one loop amplitudes and it is therefore of great interest to develop a numerical implementation of the unitarity method. We describe a recently-developed, efficient, semi-numerical unitarity method for the computation of the cut-constructible part of one-loop amplitudes.
Cite
@article{arxiv.0802.4227,
title = {A Numerical Unitarity Formalism for One-Loop Amplitudes},
author = {R. Keith Ellis and Walter T. Giele and Zoltan Kunszt},
journal= {arXiv preprint arXiv:0802.4227},
year = {2009}
}
Comments
6 pages, talk at the 8th International Symposium on Radiative Corrections (RADCOR) October 1-5 2007, Florence, Italy Florence, Italy}