2002/12/31 by Robert V. Harlander, Matthias Steinhauser · 1 citation
Physics and Astronomy · #Coupling constant #Decoupling (probability) #Fortran #Hadron #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Perturbation theory (quantum mechanics) #Perturbative QCD #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #hep-ph
paper · pdf · doi:10.1016/s0010-4655(03)00204-2
published as Comput.Phys.Commun. 153 (2003) 244-274 · 40 pages, LaTeX. 18 ps-files included. Typos fixed, references updated. The program and this paper are available from http://www.rhad.de/
arxiv created 2003/05/13 · openalex publication_date 2003/05/19 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
This paper describes the fortran program rhad which performs a numerical evaluation of the photon-induced hadronic R-ratio, R(s), related to the cross section for electron-positron annihilation, for a given center-of-mass energy √(s). In rhad the state-of-the-art perturbative corrections to R(s) are implemented and the running and decoupling of the strong coupling constant and the quark masses is automatically treated consistently. Several options allow for a flexible use of the program.