# MATAD: a program package for the computation of MAssive TADpoles

## Description

Abstract In the recent years there has been an enormous development in the evaluation of higher order quantum corrections. An essential ingredient in the practical calculations is provided by vacuum diagrams, i.e. integrals without external momenta. In this paper a program package is described which can deal with one-, two-, and three-loop vacuum integrals with one non-zero mass parameter. The principle structure is introduced and the main parts of the package are described in detail. Explicit example... Title of program: MATAD Catalogue Id: ADNG_v1_0 Nature of problem Multi-loop integrals are needed for the evaluation of quantum corrections. An important class of loop diagrams is covered by so-called vacuum integrals which have no external momentum. MATAD can analytically compute those one-, two- and three-loop vacuum integrals where one mass scale is present. Versions of this program held in the CPC repository in Mendeley Data ADNG_v1_0; MATAD; 10.1016/S0010-4655(00)00204-6 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)