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Probing Pseudo-Dirac Neutrinos with Astrophysical Sources at IceCube

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arxiv 2212.00737 v2 pith:JUYC576C submitted 2022-12-01 astro-ph.HE hep-exhep-ph

Kiara Carloni , Ivan Martinez-Soler , Carlos A. Arguelles , K. S. Babu , P. S. Bhupal Dev This is my paper
classification astro-ph.HEhep-exhep-ph
keywords neutrinoastrophysicaldeltaicecubemethodneutrinospseudo-diracreach
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abstract

The recent observation of NGC 1068 by the IceCube Neutrino Observatory has opened a new window to neutrino physics with astrophysical baselines. In this Letter, we propose a new method to probe the nature of neutrino masses using these observations. In particular, our method enables searching for signatures of pseudo-Dirac neutrinos with mass-squared differences that reach down to $\delta m^2 \gtrsim 10^{-21}~\text{eV}^2$, improving the reach of terrestrial experiments by more than a billion. Finally, we discuss how the discovery of a constellation of neutrino sources can further increase the sensitivity and cover a wider range of $\delta m^2$ values.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Astrophysical Neutrino Sources as Colliders

    hep-ph 2026-07 conditional novelty 7.0 of 10

    Neutrino point-source observations (IceCube, KM3NeT) can bound inelastic pp and pγ cross sections from √s ≈ 1 GeV to ~10^5 GeV, extending beyond LHC/HERA and sometimes below unitarity limits.

  2. Exploring New Propagation Scales With Galactic Neutrinos

    hep-ph 2025-12 conditional novelty 6.0 of 10

    A projected joint IceCube+KM3NeT Galactic-neutrino analysis could constrain quasi-Dirac mass splittings near 10^-14-10^-12 eV^2 and nu3-to-nu1 decay rates above 5e-13 eV^2 at 90% CL.

  3. Boomerang mechanism explaining the excess radio background

    hep-ph 2025-09 conditional novelty 6.0 of 10

    A two-stage mechanism where relic neutrinos convert to dark neutrinos in the early universe and later decay into photon states can explain the ARCADE 2 excess radio background while evading neutrino magnetic moment bounds.

  4. TAMBO: A Deep-Valley Neutrino Observatory

    astro-ph.HE 2025-07 conditional novelty 6.0 of 10

    A mountain-valley array of 5,000 particle detectors could detect Earth-skimming tau neutrinos in the PeV to EeV range with high cosmic purity and an aperture larger than IceCube's above 2 PeV.

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