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

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)