Longevity and Highest-Energy Cosmic Rays

Abstract

It is proposed that the highest energy $\sim 10^{20}$eV cosmic ray primaries are protons, decay products of a long-lived progenitor which has propagated from typically $\sim 100$Mpc. Such a scenario can occur in e.g. SU(15) grand unification and in some preon models, but is more generic; if true, these unusual cosmic rays provide a window into new physics.

8 pages, RevTeX

References in corpus (1)

• Correlation between Compact Radio Quasars and Ultra-High Energy Cosmic Rays

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• Simulation of the isotropic ultra-high energy photons flux in the solar magnetic field