A C++ Code to Solve the DGLAP Equations Applied to Ultra High Energy Cosmic Rays

Details A C++ Code to Solve the DGLAP Equations Applied to Ultra High Energy Cosmic Rays A C++ Code to Solve the DGLAP Equations Applied to Ultra High Energy Cosmic Rays

2001-08-15

arxiv.org/abs/hep-ph/0108127v2

Comput.Phys.Commun. 143 (2002) 287-304

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, revtex, 4 eps figures. Source code available from author or from CPC program library. Typos corrected. References ad

Scientific paper

10.1016/S0010-4655(01)00458-1

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.

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