Heavy sterile neutrinos in tau decays and the MiniBooNE anomaly

Claudio Dib, Juan Carlos Helo, Martin Hirsch, Sergey Kovalenko, Ivan Schmidt

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

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 τ -→μ -μ +π -ν and τ -→μ -μ +e -νν. We find that searches for these decays, featuring displaced vertices between the μ - 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.

Original languageEnglish
Article number011301
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume85
Issue number1
DOIs
Publication statusPublished - 6 Jan 2012
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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