golem95: A numerical program to calculate one-loop tensor integrals with up to six external legs

Published: 1 November 2009| Version 1 | DOI: 10.17632/8y6ctnbrb5.1
T. Binoth, J.-Ph. Guillet, G. Heinrich, E. Pilon, T. Reiter


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. Title of program: golem95_v1.0 Catalogue Id: AEEO_v1_0 Nature of problem Evaluation of one-loop multi-leg tensor integrals occurring in the calculation of next-to-leading order corrections to scattering amplitudes in elementary particle physics. Versions of this program held in the CPC repository in Mendeley Data AEEO_v1_0; golem95_v1.0; 10.1016/j.cpc.2009.06.024 AEEO_v2_0; golem95-1.2.0; 10.1016/j.cpc.2011.05.015 AEEO_v3_0; golem95-1.3.0; 10.1016/j.cpc.2014.03.009 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)



Computational Physics, Computational Method, Elementary Particle