Heavy sterile neutrinos in tau decays and the MiniBooNE anomaly
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Heavy sterile neutrinos in tau decays and the MiniBooNE anomaly

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Heavy sterile neutrinos in tau decays and the MiniBooNE anomaly

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Dib, Claudio; Helo, Juan Carlos; Hirsch, Martin; Kovalenko, S.G.; Schmidt, Ivan
Aquest document és un/a article, creat/da en: 2012
Current results of the MiniBooNE experiment show excess events that indicate neutrino oscillations, but only if one goes beyond the standard 3 family scenario. Recently a different explanation of the events has been given, not in terms of oscillations but by the production and decay of a massive sterile neutrino with large transition magnetic moment. We study the effect of such a sterile neutrino in the rare decays tau(-) -> mu(-)mu(+)pi(-)nu and tau(-) -> mu(-)mu(+)e(-)nu nu. We find that searches for these decays, featuring displaced vertices between the mu(-) and the other charged particles, constitute reliable tests for the existence of the sterile neutrino proposed to explain the MiniBooNE anomaly. These searches could be done with already existing experimental data.

    Dib, Claudio Helo, Juan Carlos Hirsch, Martin Kovalenko, S.G. Schmidt, Ivan 2012 Heavy sterile neutrinos in tau decays and the MiniBooNE anomaly Physical Review D 85 1 011301
http://dx.doi.org/10.1103/PhysRevD.85.011301
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