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Parametric Resonance in Oscillations of Atmospheric Neutrinos?

Q. Y. Liu·S. P. Mikheyev·A. Yu. Smirnov
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Abstract

We consider a solution of the atmospheric neutrino problem based on oscillations of muon neutrinos to sterile neutrinos: $ν_μ$ $\leftrightarrow$ $ν_s$. The zenith angle ($Θ$) dependences of the neutrino and upward-going muon fluxes in presence of these oscillations are studied. The dependences have characteristic form with two dips: at $\cos Θ= -0.6 ÷-0.2$ and $\cos Θ= -1.0 ÷-0.8$. The latter dip is due to parametric resonance in oscillations of neutrinos which cross the core of the earth. A comparison of predictions with data from the MACRO, Baksan and Super-Kamiokande experiments is given.

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Q. Y. Liu, S. P. Mikheyev, A. Yu. Smirnov. 1998-03-21. Parametric Resonance in Oscillations of Atmospheric Neutrinos?. https://doi.org/10.1016/s0370-2693(98)01102-2

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