Sterile neutrino decay as a common origin for LSND/MiniBooNe and T2K excess events

Abstract

We point out that the excess of electron-like neutrino events recently observed by the T2K collaboration may have a common origin with the similar excess events previously reported by the LSND and MiniBooNE experiments and interpreted as a signal from the radiative decays of a sterile neutrino ν_h with the mass around 50 MeV produced in muon neutrino neutral current (NC) interactions. In this work we assumed that the ν_h can also be produced in tau neutrino NC reactions.

5 pages, 5 figures. Revised version accepted by PRD (Rapid Comm.) after referee's suggestions. Fig.1 added for illustration

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• The T2K Experiment
• Resolution of puzzles from the LSND, KARMEN, and MiniBooNE experiments
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• A New Light Higgs Boson and Short-Baseline Neutrino Anomalies
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• Large θ_13 from finite quantum corrections in quasi-degenerate neutrino mass spectrum
• Production of heavy sterile neutrinos from vector boson decay at electroweak temperatures
• Predicting Leptonic CP phase by considering deviations in charged lepton and neutrino sectors
• Charged lepton correction to tribimaximal lepton mixing and its implications to neutrino phenomenology
• Space-time evolution of heavy sterile neutrinos in cascade decays
• Four-neutrino analysis of 1.5km-baseline reactor antineutrino oscillations
• $B-L$ model with $A_4\times Z_3\times Z_4$ symmetry for $3+1$ active$-$sterile neutrino mixing
• The case for mixed dark matter from sterile neutrinos
• Perturbation to TBM mixing and its phenomenological implications
• Charged lepton mixing via heavy sterile neutrinos