Algebraic reduction of one-loop Feynman diagrams to scalar integrals

Abstract
It is shown how all one-loop integrals arising from Feynman diagrams in a general gauge theory can be reduced to scalar integrals. The scheme presented here successfully treats the case when the momenta are linear dependent. A set of algebraic manipulation routines written in REDUCE and that implements the scheme is described.

Title of program: LERG-I
Catalogue Id: ABBX_v1_0

Nature of problem
Expressions obtained in the calculation of one-loop radiative corrections to processes in high energy physics are generally simplified by expressing them in terms of scalar integrals. LERG-I makes the reduction from form factors corresponding to the various possible Lorentz tensors occuring in the problem.

Versions of this program held in the CPC repository in Mendeley Data
ABBX_v1_0; LERG-I; 10.1016/0010-4655(88)90202-0
ABBX_v2_0; LERG-I; 10.1016/0010-4655(90)90019-W
ABBX_v3_0; LERG-I; 10.1016/0010-4655(94)00141-N

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)