A novel approach to the computation of one-loop three- and four-point functions. II - The complex mass case
High Energy Physics - Theory
2020-02-26 v3 High Energy Physics - Phenomenology
Abstract
This article is the second of a series of three presenting an alternative method to compute the one-loop scalar integrals. It extends the results of the first article to general complex masses. Let us remind the main features enjoyed by this method. It directly proceeds in terms of the quantities driving algebraic reduction methods. It applies to the four-point functions in the same way as to the three-point functions. Lastly, it extends to kinematics more general than the one of physical e.g. collider processes relevant at one loop.
Keywords
Cite
@article{arxiv.1811.03917,
title = {A novel approach to the computation of one-loop three- and four-point functions. II - The complex mass case},
author = {J. Ph. Guillet and E. Pilon and Y. Shimizu and M. S. Zidi},
journal= {arXiv preprint arXiv:1811.03917},
year = {2020}
}
Comments
51 pages, 5 figures. Some changes in the introduction and the summary to be consistent with arXiv:1905.08115