Efficient evolution of unpolarized and polarized parton distributions with QCD-Pegasus
Description
Abstract The Fortran package QCD-Pegasus is presented. This program provides fast, flexible and accurate solutions of the evolution equations for unpolarized and polarized parton distributions of hadrons in perturbative QCD. The evolution is performed using the symbolic moment-space solutions on a one-fits-all Mellin inversion contour. User options include the order of the evolution including the next-to-next-to-leading order in the unpolarized case, the type of the evolution including an emulation of... Title of program: QCD-Pegasus Version: 1.0 Catalogue Id: ADVN_v1_0 Nature of problem Solution of the evolution equations for the unpolarized and polarized parton distributions of hadrons at leading order (LO), next-to-leading order and next-to-next-to-leading order of perturbative QCD. Evolution performed either with a fixed number n f of effectively massless quark flavours or in the variable-n f scheme. The calculation of observables from the parton distributions is not part of the present package. Versions of this program held in the CPC repository in Mendeley Data ADVN_v1_0; QCD-Pegasus Version: 1.0; 10.1016/j.cpc.2005.03.103 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)