Generalized unitarity for N=4 super-amplitudes
High Energy Physics - Theory
2015-05-13 v1
Abstract
We develop a manifestly supersymmetric version of the generalized unitarity cut method for calculating scattering amplitudes in N=4 SYM theory. We illustrate the power of this method by computing the one-loop n-point NMHV super-amplitudes. The result confirms two conjectures which we made in arXiv:0807.1095 [hep-th]. Firstly, we derive the compact, manifestly dual superconformally covariant form of the NMHV tree amplitudes for arbitrary number and types of external particles. Secondly, we show that the ratio of the one-loop NMHV to the MHV amplitude is dual conformal invariant.
Cite
@article{arxiv.0808.0491,
title = {Generalized unitarity for N=4 super-amplitudes},
author = {J. M. Drummond and J. Henn and G. P. Korchemsky and E. Sokatchev},
journal= {arXiv preprint arXiv:0808.0491},
year = {2015}
}
Comments
41 pages, 9 figures