Ultrahigh energy cosmic rays as a Grand Unification signal
High Energy Physics - Phenomenology
2007-05-23 v1 Astrophysics
Abstract
We analyze the spectrum of the ultrahigh energy (above \approx 10^{9} GeV) cosmic rays. With a maximum likelihood analysis we show that the observed spectrum is consistent with the decay of extragalactic GUT scale particles. The predicted mass for these superheavy particles is m_X=10^b GeV, where b=14.6_{-1.7}^{+1.6}.
Keywords
Cite
@article{arxiv.hep-ph/0105348,
title = {Ultrahigh energy cosmic rays as a Grand Unification signal},
author = {Z. Fodor and S. D. Katz},
journal= {arXiv preprint arXiv:hep-ph/0105348},
year = {2007}
}
Comments
4 pages, 3 figures, talk to be presented at the 27th International Cosmic Ray Conference, Hamburg, Germany, August 7-15, 2001