Particle Physics Explanations for Ultra High Energy Cosmic Ray Events
arXiv:hep-ph/0304030 · doi:10.1007/BF02705083
Abstract
The origin of cosmic ray events with $E \gsim 10^{11}$ GeV remains mysterious. In this talk I briefly summarize several proposed particle physics explanations: a breakdown of Lorentz invariance, the ``burst'' scenario, new hadrons with masses of several GeV as primaries, and magnetic monopoles with mass below GeV as primaries. I then describe in a little more detail the idea that these events are due to the decays of very massive, long--lived exotic particles.
arXiv commentInvited plenary talk at PASCOS03, Mumbai, India, January 2003; 13 pages, 1 figure
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