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arXiv · hep-ph/0307041

Effects of sterile neutrinos on the ultrahigh-energy cosmic neutrino flux

P. Keranen·J. Maalampi·M. Myyrylainen·J. Riittinen
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Abstract

We investigate the effect of sterile neutrinos that are nearly degenerate with active ones on the flux of ultrahigh-energy cosmic ray neutrinos at earth. This offers a way to probe neutrino oscillations in the mass-squared range (10^{-16} eV^2 < δm^2 < 10^{-11} eV^2) which maybe hard to detect by any other means. Taking into account the present experimental uncertainties of the active-active mixing angles and by allowing any values for the active-sterile mixing angles we find that the ratio of the electron and muon neutrino fluxes may change by -40 % to 70 % in comparison with the ratio in the absence of active-sterile mixing.

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P. Keranen, J. Maalampi, M. Myyrylainen, J. Riittinen. 2003-09-02. Effects of sterile neutrinos on the ultrahigh-energy cosmic neutrino flux. https://doi.org/10.1016/j.physletb.2003.09.006

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