Search for heavy neutrinos in $K^{+}\to {\mu }^{+}{\nu }_H$ decays

Abstract

Evidence of a heavy neutrino, ${\nu }_H$, in the $K^{+}\to {\mu }^{+}{\nu }_H$ decays was sought using the E949 experimental data with an exposure of $1.70\times 10^{12}$ stopped kaons. With the major background from the radiative $K^{+}\to {\mu }^{+}{\nu }_{\mu }\gamma$ decay understood and suppressed, upper limits (90% C.L.) on the neutrino mixing matrix element between muon and heavy neutrino, $|U_{\mu H}{|}^2$, were set at the level of $10^{-7}$ to $10^{-9}$ for the heavy neutrino mass region 175 to 300 MeV/$c^2$.

14 pages, 13 figures; accepted by Physical Review D

References in corpus (5)

• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Measurement of Neutrino Oscillation by the K2K Experiment
• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• How to find neutral leptons of the nuMSM?

Cited by in corpus (34)

• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• The Present and Future Status of Heavy Neutral Leptons
• The Search for Feebly-Interacting Particles
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• Detecting the $L_{\mu }-L_{\tau }$ gauge boson at Belle II
• Search for heavy neutral lepton production in $K^{+}$ decays
• Search for $K^{+}$ decays to a muon and invisible particles
• Uniting low-scale leptogeneses
• Searches for Long-Lived Particles at the Future FCC-ee
• Dark Scalars and Heavy Neutral Leptons at DarkQuest
• Neutrino Masses from a Dark Neutrino Sector below the Electroweak Scale
• Charged $B$ Mesogenesis
• The MicroBooNE Experiment, the NuMI Absorber, and Heavy Neutral Leptons
• Making the Universe at 20 MeV
• HECATE: A long lived particle detector concept for the FCC-ee or CEPC
• Search for long-lived heavy neutral leptons and Higgs portal scalars decaying in the MicroBooNE detector
• Explaining the MiniBooNE Anomalous Excess via Leptophilic ALP-Sterile Neutrino Coupling
• Probing HNL-ALP couplings at colliders
• Reducing cosmological small scale structure via a large dark matter-neutrino interaction: constraints and consequences
• Modelling Heavy Neutral Leptons in Accelerator Beamlines
• Revisiting PS191 limits on sterile neutrinos
• Experimental constraints on the neutrino and gauge parameters of the super-weak U(1) extension of the standard model
• Freeze-in and freeze-out generation of lepton asymmetries after baryogenesis in the $\nu$MSM
• Search for a Hidden Sector Scalar from Kaon Decay in the Di-Muon Final State at ICARUS
• A Snowmass Whitepaper: Dark Matter Production at Intensity-Frontier Experiments
• Hidden-Sector Neutrinos and Freeze-In Leptogenesis
• ALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals
• Mass Reconstruction of Heavy Neutral Leptons from Stopped Mesons
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• Search for heavy neutral leptons in electron-positron and neutral-pion final states with the MicroBooNE detector
• Enhancing the Sensitivity to Seesaw Predictions in Gauged $B-L$ Scenarios
• Indirect search of Heavy Neutral Leptons using the DUNE Near Detector
• Heavy Neutral Lepton searches at an ICARUS-like detector using NuMI beam