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Possible detection of relic neutrinos and their mass

A. Ringwald
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Abstract

Recently the possibility was widely discussed that a large fraction of the highest energy cosmic rays may be decay products of Z bosons which were produced in the resonant annihilation of ultrahigh energy cosmic neutrinos on cosmological relic neutrinos. If one takes this so-called Z-burst scenario seriously, one may infer the mass of the heaviest relic neutrino as well as the necessary ultrahigh energy cosmic neutrino flux from a comparison of the predicted Z-burst spectrum with the observed cosmic ray spectrum.

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A. Ringwald. 2001-11-09. Possible detection of relic neutrinos and their mass. https://arxiv.org/abs/hep-ph/0111112

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