Effects of $e^{-}{e}^{+}{\nu }_e$ Decays of Tau Neutrinos Near A Supernova

Abstract

We revisit the constraints implied by SN 1987 A observations on the decay rate of a multi-MeV ${\nu }_{\tau }$ decaying into the visible channel ${\nu }_{\tau }\to e^{+}{e}^{-}{\nu }_e$, if its lifetime is more than 10 {\it sec.}. We discuss its implication for the minimal left-right symmetric model with see-saw mechanism for neutrino masses. We also speculate on the possible formation of a ``giant Capacitor" in intergalactic space due to the decay of "neutronization" ${\nu }_{\tau }$'s and spin allignment possibility in the supernova.

29 Pages, Tex file, UMDHEP 94-42

References in corpus (2)

• New Upper Limits on the Tau Neutrino Mass from Primordial Helium Considerations
• Lepton Flavor Violation and the Tau Neutrino Mass

Cited by in corpus (12)

• Remarks on the KARMEN Anomaly
• Supernova Bounds on the Dark Photon Using its Electromagnetic Decay
• Neutrino Masses
• Primordial Nucleosynthesis with a Decaying Tau Neutrino
• A Supersymmetric Resolution of the KARMEN Anomaly
• Massive Tau Neutrino and SN 1987a
• Left-right symmetry and Neutrino Stability
• MeV neutrinos in double beta decay
• Constraints on Massive Tau Neutrinos and their Cosmological Implications
• Scenario of Light Sterile Neutrinos with A Heavy Tau Neutrino in A Supersymmetric Model
• Implications of a Purely Right-Handed Bottom Quark Decay Coupling
• The Bremsstrahlung Process Nu_Tau -> Nu_e E+ E- Gamma