Cosmological Neutrino Signatures for Grand Unification Scale Physics
Abstract
Physics beyond the standard model might imply the cosmological production of particles with grand unification scale energies. Nucleons and gamma-rays from such processes are candidates for the cosmic rays observed beyond 100 EeV [10**(20) eV]. Using a new particle propagation code, we calculate the neutrino fluxes predicted by such scenarios if consistency with the observed cosmic ray flux and the universal gamma-ray background at 1-10 GeV is required. Flux levels detectable by proposed km**3 scale neutrino observatories are allowed by these constraints. Bounds on or detection of a neutrino flux above about 1 EeV would allow neutrino astronomy to probe grand unification scale physics.
Keywords
Cite
@article{arxiv.astro-ph/9610221,
title = {Cosmological Neutrino Signatures for Grand Unification Scale Physics},
author = {Guenter Sigl and Sangjin Lee and David N. Schramm and Paolo Coppi},
journal= {arXiv preprint arXiv:astro-ph/9610221},
year = {2009}
}
Comments
5 latex pages, 1 postscript figure included, uses revtex style in two column format and psfig.sty, submitted to Phys. Lett. B