Heavy Neutrino searches through Double-Bang Events at Super-Kamiokande, DUNE, and Hyper-Kamiokande

Abstract

A variety of new physics scenarios allow for neutrinos to up-scatter into a heavy neutral lepton state. For a range of couplings and neutrino energies, the heavy neutrino may travel some distance before decaying to visible final states. When both the up-scattering and decay occur within the detector volume, these "double bang" events produce distinctive phenomenology with very low background. In this work, we first consider the current sensitivity at Super-Kamiokande via the atmospheric neutrino flux, and find current data may already provide new constraints. We then examine projected future sensitivity at DUNE and Hyper-Kamiokande, including both atmospheric and beam flux contributions to double-bang signals.

17 pages, 6 figures. v2: minor changes, references added and typos fixed. Matches version accepted for publication in JHEP

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Cited by in corpus (20)

• Low-energy probes of sterile neutrino transition magnetic moments
• Neutrino Up-scattering via the Dipole Portal at Forward LHC Detectors
• Probing Active-Sterile Neutrino Transition Magnetic Moments with Photon Emission from CE$\nu$NS
• Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos
• Dipole-Coupled Neutrissimo Explanations of the MiniBooNE Excess Including Constraints from MINERvA Data
• Probing active-sterile neutrino transition magnetic moments at LEP and CEPC
• Probing active-sterile neutrino transition magnetic moment on coherent elastic solar neutrino-nucleus scattering
• Dipole portal and neutrinophilic scalars at DUNE revisited: the importance of the high-energy neutrino tail
• Using DUNE to Shed Light on the Electromagnetic Properties of Neutrinos
• Search for the dipole portal of heavy neutral leptons at future colliders
• BSM Targets at a "Target-less DUNE"
• Enhanced neutrino polarizability
• Testing Neutrino Dipole Portal by Long-lived Particle Detectors at the LHC
• Probing Heavy Neutrino Magnetic Moments at the LHC using Long-Lived Particle Searches
• Up-scattering production of a sterile fermion at DUNE: complementarity with spallation source and direct detection experiments
• Illuminating the dark: mono-$\gamma$ signals at NA62
• Long-Lived Particles and the Quiet Sun
• Semi-Visible Dark Photon Phenomenology at the GeV Scale
• Double Bangs at IceCube as a Window to the Neutrino Mass Origin
• Constraints on active-sterile neutrino transition magnetic moments from low-energy electronic recoils at direct detection experiments