# TSIL: a program for the calculation of two-loop self-energy integrals

## Description

Abstract TSIL is a library of utilities for the numerical calculation of dimensionally regularized two-loop self-energy integrals. A convenient basis for these functions is given by the integrals obtained at the end of O.V. Tarasov's recurrence relation algorithm. The program computes the values of all of these basis functions, for arbitrary input masses and external momentum. When analytical expressions in terms of polylogarithms are available, they are used. Otherwise, the evaluation proceeds by a R... Title of program: TSIL Catalogue Id: ADWS_v1_0 Nature of problem Numerical evaluation of dimensionally regulated Feynman integrals needed in two-loop self-energy calculations in relativistic quantum field theory in four dimensions. Versions of this program held in the CPC repository in Mendeley Data ADWS_v1_0; TSIL; 10.1016/j.cpc.2005.08.005 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)