# RunDec: a Mathematica package for running and decoupling of the strong coupling and quark masses

## Description

Abstract In this paper the formulae are collected which are needed for the computation of the strong coupling constant and quark masses at different energy scales and for different number of active flavors. All equations contain the state-of-the-art QCD corrections up to three- and sometimes even four-loop order. For the practical implementation Mathematica is used and a package containing useful procedures is provided. Title of program: RunDec Catalogue Id: ADMT_v1_0 Nature of problem The values for the coupling constant of Quantum Chromodynamics, alphas(nf)(mu), actually depends on the considered energy scale, mu, and the number of active quark flavours, nf. The same applies to light quark masses, mq(nf)(mu), if they are, e.g., evaluated in the MSbar scheme. In the program RunDec all relevant formulae are collected and varioius procedures are provided which allow for a convenient evaluation of alphas(nf)(mu) and mq(nf)(mu) using the state-of-the-art correction terms. Versions of this program held in the CPC repository in Mendeley Data ADMT_v1_0; RunDec; 10.1016/S0010-4655(00)00155-7 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)