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arXiv · 0808.0491

Generalized unitarity for N=4 super-amplitudes

J. M. Drummond·J. Henn·G. P. Korchemsky·E. Sokatchev
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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.

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J. M. Drummond, J. Henn, G. P. Korchemsky, E. Sokatchev. 2008-08-04. Generalized unitarity for N=4 super-amplitudes. https://doi.org/10.1016/j.nuclphysb.2012.12.009

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