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arXiv · 0802.4227

A Numerical Unitarity Formalism for One-Loop Amplitudes

R. Keith Ellis·Walter T. Giele·Zoltan Kunszt
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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.

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R. Keith Ellis, Walter T. Giele, Zoltan Kunszt. 2008-02-28. A Numerical Unitarity Formalism for One-Loop Amplitudes. https://arxiv.org/abs/0802.4227

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