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arXiv · hep-ph/0102155

Sterile neutrinos in tau lepton decays

Vladimir Gribanov·Sergey Kovalenko·Ivan Schmidt
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Abstract

We study possible contributions of heavy sterile neutrinos $ν_h$ to the decays $τ^-\to e^{\pm}(μ^{\pm})π^{\mp}π^-$. From the experimental upper bounds on their rates we derive new constraints on the $ν_h-ν_τ$ mixing in the mass region $140.5{MeV}\leq m_{ν_h}\leq 1637$ MeV. We discuss cosmological and astrophysical status of $ν_h$ in this mass region and compare our constraints with those recently derived by the NOMAD collaboration.

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Vladimir Gribanov, Sergey Kovalenko, Ivan Schmidt. 2001-02-13. Sterile neutrinos in tau lepton decays. https://doi.org/10.1016/s0550-3213(01)00169-9

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