The MiniBooNE anomaly, the decay Ds -> mu+nu and heavy sterile neutrino

Abstract

It has been recently suggested that the anomalous excess of low-energy electron-like events observed by the MiniBooNE experiment, could be explained by the radiative decay of a heavy sterile neutrino nu_h of the mass around 500 MeV with a muonic mixing strength in the range |U_{μh}|^2 \simeq (1-4)\times 10^{-3}. If such nu_h exists its admixtures in the decay Ds -> mu+nu would result in the decay Ds -> mu+nu_h with the branching fraction \simeq (1.2-5.5)\times 10^{-4}, which is in the experimentally accessible range. Interestingly, the existence of the Ds -> mu+nu_h decay at this level may also explain why the currently measured decay rate of Ds -> mu+nu is slightly higher than the predicted one. This enhances motivation for a sensitive search for this decay mode and makes it interesting and complementary to neutrino experiments probing sterile-active neutrino mixing. Considering, as an example the CLEO-c experiment, we suggest to perform a search for the decay Ds -> mu+nu_h with the analysis of existing data. The discrepancy between the measurements and theoretical description of the decay Ds -> tau+nu is also discussed in brief.

4 pages, 2 figures

References in corpus (6)

• How to find neutral leptons of the nuMSM?
• High Precision determination of the pi, K, D and D_s decay constants from lattice QCD
• Accumulating evidence for nonstandard leptonic decays of D_s mesons
• Can scalar leptoquarks explain the f_{D_s} puzzle?
• Measurement of B(Ds -> munu)
• Semileptonic decays of charmed and beauty baryons with sterile neutrinos in the final state

Cited by in corpus (23)

• Improved Search for ${\bar{\nu }}_{\mu }\to {\bar{\nu }}_e$ Oscillations in the MiniBooNE Experiment
• Neutrinos and Collider Physics
• Significant Excess of ElectronLike Events in the MiniBooNE Short-Baseline Neutrino Experiment
• Event Excess in the MiniBooNE Search for ${\bar{\nu }}_{\mu }\to {\bar{\nu }}_e$ Oscillations
• Updated MiniBooNE Neutrino Oscillation Results with Increased Data and New Background Studies
• Constraints on the Dark Matter Particle Mass from the Number of Milky Way Satellites
• Sterile neutrinos in lepton number and lepton flavor violating decays
• Resolution of puzzles from the LSND, KARMEN, and MiniBooNE experiments
• A Dark Seesaw Solution to Low Energy Anomalies: MiniBooNE, the muon $(g-2)$, and BaBar
• On The Decaying-Sterile Neutrino Solution to the Electron (Anti)Neutrino Appearance Anomalies
• New limits on radiative sterile neutrino decays from a search for single photons in neutrino interactions
• Heavy Sterile Neutrinos in Tau Decays and the MiniBooNE Anomaly
• Neutrino Physics Opportunities with the IsoDAR Source at Yemilab
• Solutions to the MiniBooNE Anomaly from New Physics in Charged Meson Decays
• On Sterile neutrino explanation of LSND and MiniBooNE anomalies
• On sterile neutrino mixing with ν_τ
• Constraints on electromagnetic properties of sterile neutrinos from MiniBooNE results
• Sterile neutrino decay as a common origin for LSND/MiniBooNe and T2K excess events
• The LSND/MiniBooNe excess events and heavy neutrino from muon and kaon decays
• Space-time evolution of heavy sterile neutrinos in cascade decays
• A steerable UV laser system for the calibration of liquid argon time projection chambers
• MiniBooNE Oscillation Results 2011
• Charged lepton mixing via heavy sterile neutrinos