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Scenario of Light Sterile Neutrinos with A Heavy Tau Neutrino in A Supersymmetric Model

Chun Liu·Jeonghyeon Song
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Abstract

Three light sterile neutrinos (ν_e^s, ν_μ^s and ν_τ^s) are introduced to accommodate all the available neutrino data: the atmospheric neutrino anomaly is explained by ν_μ-ν_μ^s oscillation with maximal mixing; the solar one is due to ν_e-ν_e^s oscillation of small angle Mikheyev-Smirnov-Wolfenstein type; the Liquid Scintillation Neutrino Detector data is from ν_e -ν_μoscillations, so that the neutrinos can be the hot component of the dark matter. The big bang nucleosynthesis constraint is satisfied by taking the tau neutrino to be 10 MeV heavy. The ν_τdecay is discussed in a model of gauge mediated supersymmetry breaking. The decay mode ν_τ\to\tilde{G}γwith \tilde{G} being the gravitino is proposed. The ν_τhas a rather long lifetime \sim 10^3-10^{13} sec. Its implication to the Gamma-ray Burst is discussed.

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Chun Liu, Jeonghyeon Song. 2001-01-04. Scenario of Light Sterile Neutrinos with A Heavy Tau Neutrino in A Supersymmetric Model. https://doi.org/10.1016/s0550-3213(00)00767-7

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