QCD evolution equations: Numerical algorithms from the Laguerre expansion

Published: 01-01-1999| Version 1 | DOI: 10.17632/gvf2vdvpdf.1
Claudio Corianò,
Çetin Şavkli


Abstract A complete numerical implementation, in both singlet and nonsinglet sectors, of a very elegant method to solve the QCD Evolution equations, due to Furmanski and Petronzio, is presented. The algorithm is directly implemented in x-space by a Laguerre expansion of the parton distributions. All the leading-twist distributions are evolved: longitudinally polarized, transversely polarized and unpolarized, to NLO accuracy. The expansion is optimal at finite x, up to reasonably small x-values (x ≈ 10... Title of program: QCD EVOLUTION EQUATIONS Catalogue Id: ADJS_v1_0 Nature of problem The programs provided here solve the DGLAP evolution equations, with next-to-leading order alphas effects taken to account, for unpolarized, longitudinally polarized and transversely polarized parton distributions. Versions of this program held in the CPC repository in Mendeley Data ADJS_v1_0; QCD EVOLUTION EQUATIONS; 10.1016/S0010-4655(98)00158-1 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)