SN1987A still shining: A Quest for Pseudo-Dirac Neutrinos

Abstract

Ever since the discovery of neutrinos, we have wondered if neutrinos are their own antiparticles. One remarkable possibility is that neutrinos have a pseudo-Dirac nature, predicting a tiny mass difference between active and sterile states. We analyze the neutrino data from SN1987A in the light of active-sterile oscillations and find a mild preference ($\Delta {\chi }^2\approx 3$) for $\delta m^2=6.31\times 10^{-20}{\mathrm{eV}}^2$. Notably, the same data is able to exclude $\delta m^2\sim [2.55,3.01]\times 10^{-20}{\mathrm{eV}}^2$ with $\Delta {\chi }^2>9$, the tiniest mass differences constrained so far. We further consider the next-generation of experiments and demonstrate their sensitivity exploring the nature of the neutrino mass.

arXiv comment5+3 pages, 7 Figures; added clarifications and additional checks in appendix

References in corpus (37)

• The fate of hints: updated global analysis of three-flavor neutrino oscillations
• Identifying the neutrino mass spectrum from a supernova neutrino burst
• Precise quasielastic neutrino/nucleon cross section
• Hyper-Kamiokande Design Report
• High-resolution supernova neutrino spectra represented by a simple fit
• Direct Bounds on Electroweak Scale Pseudo-Dirac Neutrinos from $\sqrt{s}=8$ TeV LHC Data
• Pseudo-Dirac Neutrinos, a Challenge for Neutrino Telescopes
• Neutrino Oscillations and the Supernova 1987A Signal
• Detecting non-relativistic cosmic neutrinos by capture on tritium: phenomenology and physics potential
• Supernova neutrino physics with xenon dark matter detectors: A timely perspective
• Pseudo-Dirac Neutrinos in the New Standard Model
• Addressing the Majorana vs. Dirac Question with Neutrino Decays
• Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics
• Measurement of the muon decay spectrum with the ICARUS liquid Argon TPC
• Fundamental physics with the diffuse supernova background neutrinos
• Pseudo-Dirac Scenario for Neutrino Oscillations
• Effects of sterile neutrinos on the ultrahigh-energy cosmic neutrino flux
• Pseudo-Dirac Neutrino Scenario: Cosmic Neutrinos at Neutrino Telescopes
• Mirror model for sterile neutrinos
• Comparative analysis of SN1987A antineutrino fluence
• The diffuse supernova neutrino flux, supernova rate and SN1987A
• Distinguishing Dirac and Majorana neutrinos by their gravi-majoron decays
• Decoherence and oscillations of supernova neutrinos
• Majorana vs Pseudo-Dirac Neutrinos at the ILC
• On the Impact of Neutrino Decays on the Supernova Neutronization-Burst Flux
• Implications of the Pseudo-Dirac Scenario for Ultra High Energy Neutrinos from GRBs
• New analysis of the SN 1987A neutrinos with a flexible spectral shape
• Pseudo-Dirac neutrinos via mirror-world and depletion of UHE neutrinos
• Quasi Dirac neutrino oscillations
• Three-Body Decays of Heavy Dirac and Majorana Fermions
• Quasi-Dirac neutrino oscillations at DUNE and JUNO
• The likelihood for supernova neutrino analyses
• IceCube Flavor Ratios with Identified Astrophysical Sources: Towards Improving New Physics Testability
• Neutrino mass from bremsstrahlung endpoint in coherent scattering on nuclei
• Shining Light on the Mass Scale and Nature of Neutrinos with $e\gamma \to e\nu \overline{\nu }$
• Effects of degenerate sterile neutrinos on the supernova neutrino flux
• Coherence of oscillations in matter and supernova neutrinos

Cited by in corpus (14)

• Naturally Light Dirac and Pseudo-Dirac Neutrinos from Left-Right Symmetry
• Astrophysical neutrino oscillations after pulsar timing array analyses
• Revisiting pseudo-Dirac neutrino scenario after recent solar neutrino data
• Probing Pseudo-Dirac Neutrinos with Astrophysical Sources at IceCube
• $pp$ Solar Neutrinos at DARWIN
• Relic neutrino decay solution to the excess radio background
• Supernova Neutrinos: flavour conversion mechanisms and new physics scenarios
• Pseudo-Dirac Neutrinos and Relic Neutrino Matter Effect on the High-energy Neutrino Flavor Composition
• How Broad is a Neutrino?
• Constraining the pseudo-Dirac nature of neutrinos using astrophysical neutrino flavor data
• Cosmogenic neutrinos as probes of new physics
• Neutrino Theory Overview
• Cosmic neutrino background detection in the minimally extended Standard Model
• Boomerang mechanism explaining the excess radio background