The Ultra High Energy Cosmic Ray Spectrum from Relic Particle Decay and DGLAP Evolution
Astrophysics
2007-05-23 v1 High Energy Physics - Phenomenology
Abstract
We calculate the spectrum of ultra high energy cosmic rays produced by the decay of a superheavy dark matter population clustered in the galactic halo. To perform this calculation we start with fragmentation functions measured at LEP and evolve them to the cosmic ray energy scale using the QCD DGLAP equations. We consider Standard Model evolution and supersymmetric evolution. We also take into account many-body final states in the decay of the dark matter particles.
Cite
@article{arxiv.astro-ph/0201151,
title = {The Ultra High Energy Cosmic Ray Spectrum from Relic Particle Decay and DGLAP Evolution},
author = {Ramon Toldra},
journal= {arXiv preprint arXiv:astro-ph/0201151},
year = {2007}
}
Comments
Talk at COSMO-01 Workshop, Rovaniemi, Finland, Aug 30-Sep 4, 2001. 9 pages, LaTeX, 3 eps figures