A Higher Order Perturbative Parton Evolution Toolkit (HOPPET)

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018) Abstract This document describes a Fortran 95 package for carrying out DGLAP evolution and other common manipulations of parton distribution functions (PDFs). The PDFs are represented on a grid in x-space so as to avoid limitations on the functional form of input distributions. Good speed and accuracy are obtained through the representation of splitting functions in terms of their convolution with a set of piecewise polynomial basis functions, and Runge–Kutta techniques are used for the evolution in Q... Title of program: HOPPET Catalogue Id: AECA_v1_0 Nature of problem Solution of the DGLAP evolution equations up to NNLO (NLO) for unpolarised (longitudinally polarised) PDFs, and provision of tools to facilitate manipulation (convolutions, etc.) of PDFs with user-defined coefficient and splitting functions. Versions of this program held in the CPC repository in Mendeley Data AECA_v1_0; HOPPET; 10.1016/j.cpc.2008.08.010