Generalized unitarity for N=4 super-amplitudes

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

Generalized unitarity for N=4 super-amplitudes

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arxiv 0808.0491 v1 pith:Q3MKJXAD submitted 2008-08-04 hep-th

J.M.Drummond , J.Henn , G.P.Korchemsky , E.Sokatchev This is my paper

classification hep-th

keywords nmhvamplitudesdualgeneralizedmanifestlymethodone-loopsuper-amplitudes

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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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