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arXiv · hep-ph/0309328

Ultra-High Energy Neutrino Fluxes: New Constraints and Implications

Dmitry Semikoz·Guenter Sigl
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Abstract

We apply new upper limits on neutrino fluxes and the diffuse extragalactic component of the GeV gamma-ray flux to various scenarios for ultra high energy cosmic rays and neutrinos. As a result we find that extra-galactic top-down sources can not contribute significantly to the observed flux of highest energy cosmic rays. The Z-burst mechanism where ultra-high energy neutrinos produce cosmic rays via interactions with relic neutrinos is practically ruled out if cosmological limits on neutrino mass and clustering apply.

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Dmitry Semikoz, Guenter Sigl. 2003-09-29. Ultra-High Energy Neutrino Fluxes: New Constraints and Implications. https://doi.org/10.1088/1475-7516%2F2004%2F04%2F003

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