Twistor Space Structure of the Box Coefficients of N=1 One-loop Amplitudes

Abstract

We examine the coefficients of the box functions in N=1 supersymmetric one-loop amplitudes. We present the box coefficients for all six point N=1 amplitudes and certain all $n$ example coefficients. We find for ``next-to MHV'' amplitudes that these box coefficients have coplanar support in twistor space.

arXiv comment14 pages, minor typos corrected

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