The Neutrino Magnetic Moment Portal and Supernovae: New Constraints and Multimessenger Opportunities

Abstract

We scrutinize the hypothesis that gauge singlet fermions -- sterile neutrinos -- interact with Standard Model particles through the transition magnetic moment portal. These interactions lead to the production of sterile neutrinos in supernovae followed by their decay into photons and active neutrinos which can be detected at $\gamma$-ray telescopes and neutrino detectors, respectively. We find that the non-observation of active neutrinos and photons from sterile-neutrino decay associated to SN1987A yields the strongest constraints to date on magnetic-moment-coupled sterile neutrinos if their masses are inside a $0.1-100$ MeV window. Assuming a near-future galactic supernova explosion, we estimate the sensitivity of several present and near-future experiments, including Fermi-LAT, e-ASTROGAM, DUNE, and Hyper-Kamiokande, to magnetic-moment-coupled sterile neutrinos. We also study the diffuse photon and neutrino fluxes produced in the decay of magnetic-moment coupled sterile neutrinos produced in all past supernova explosions and find that the absence of these decay daughters yields the strongest constraints to date for sterile neutrino masses inside a $1-100$ keV window.

8 pages, 6 figures

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Cited by in corpus (16)

• Axion-sourced fireballs from supernovae
• Strong Supernova 1987A Constraints on Bosons Decaying to Neutrinos
• Multimessenger Constraints on Radiatively Decaying Axions from GW170817
• Neutrino Electromagnetic Properties
• Low-Energy Supernovae Bounds on Sterile Neutrinos
• Implications on Cosmology from Dirac Neutrino Magnetic Moments
• Supernova Neutrinos: flavour conversion mechanisms and new physics scenarios
• Gravitational memory signal from neutrino self-interactions in supernova
• Long-Lived Particles and the Quiet Sun
• Two portals to GeV sterile neutrinos : dipole versus mixing
• Spin-Flavor Oscillations of Relic Neutrinos in Primordial Magnetic Field
• Supernovae Time Profiles as a Probe of New Physics at Neutrino Telescopes
• Magnetar-powered Neutrinos and Magnetic Moment Signatures at IceCube
• Quantum coherence in neutrino spin-flavor oscillations
• Resonant Spin-Flavor Precession of Sterile Neutrinos
• Absorption of Fermionic Dark Matter in the PICO-60 C${}_3$F${}_8$ Bubble Chamber