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arXiv · 0810.0992

Golem95: a numerical program to calculate one-loop tensor integrals with up to six external legs

T. Binoth·J. -Ph. Guillet·G. Heinrich·E. Pilon·T. Reiter
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Abstract

We present a program for the numerical evaluation of form factors entering the calculation of one-loop amplitudes with up to six external legs. The program is written in Fortran95 and performs the reduction to a certain set of basis integrals numerically, using a formalism where inverse Gram determinants can be avoided. It can be used to calculate one-loop amplitudes with massless internal particles in a fast and numerically stable way.

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T. Binoth, J. -Ph. Guillet, G. Heinrich, E. Pilon, T. Reiter. 2008-10-06. Golem95: a numerical program to calculate one-loop tensor integrals with up to six external legs. https://doi.org/10.1016/j.cpc.2009.06.024

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