A C++ Code to Solve the DGLAP Equations Applied to Ultra High Energy Cosmic Rays
High Energy Physics - Phenomenology
2014-11-17 v2 Astrophysics
Abstract
We solve numerically the Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equations for the evolution of fragmentation functions using the Laguerre method. We extend this method to include supersymmetric evolution. The solution to the DGLAP equations is particularly interesting to calculate the expected spectra of Ultra High Energy Cosmic Rays in models where they are produced by the decay of a massive particle X, M_X > 10^{12} GeV.
Keywords
Cite
@article{arxiv.hep-ph/0108127,
title = {A C++ Code to Solve the DGLAP Equations Applied to Ultra High Energy Cosmic Rays},
author = {Ramon Toldra},
journal= {arXiv preprint arXiv:hep-ph/0108127},
year = {2014}
}
Comments
23 pages, revtex, 4 eps figures. Source code available from author or from CPC program library. Typos corrected. References added. Accepted for publication in Comput.Phys.Commun