Golem95C: A library for one-loop integrals with complex masses
High Energy Physics - Phenomenology
2015-05-27 v1
Abstract
We present a program for the numerical evaluation of scalar integrals and tensor form factors entering the calculation of one-loop amplitudes which supports the use of complex masses in the loop integrals. The program is built on an earlier version of the golem95 library, which performs the reduction to a certain set of basis integrals using a formalism where inverse Gram determinants can be avoided. It can be used to calculate one-loop amplitudes with arbitrary masses in an algebraic approach as well as in the context of a unitarity-inspired numerical reconstruction of the integrand.
Cite
@article{arxiv.1101.5595,
title = {Golem95C: A library for one-loop integrals with complex masses},
author = {G. Cullen and J. -Ph. Guillet and G. Heinrich and T. Kleinschmidt and E. Pilon and T. Reiter and M. Rodgers},
journal= {arXiv preprint arXiv:1101.5595},
year = {2015}
}
Comments
22 pages, 3 figures