Cosmic Tau Neutrinos
Abstract
The collisions between accelerated protons and the photons present in cosmos can be a main source of high-energy neutrinos (E ≥ 106 GeV) of all flavors above the atmospheric neutrino background. I discuss here the possibility of photohadronic production of high-energy cosmic tau neutrinos in an astrophysical site and study some of the effects of vacuum neutrino flavor mixing on their subsequent propagation. I also discuss the prospects for observations of these high-energy cosmic tau neutrinos in new large neutrino telescopes
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