Cosmic neutrino cascades from secret neutrino interactions
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The first detection of high-energy astrophysical neutrinos by IceCube provides new opportunities for tests of neutrino properties. The long baseline through the cosmic neutrino background ( C ν B ) is particularly useful for directly testing secret neutrino interactions ( ν SI ) that would cause neutrino-neutrino elastic scattering at a larger rate than the usual weak interactions. We show that IceCube can provide competitive sensitivity to ν SI compared to other astrophysical and cosmological probes, which are complementary to laboratory tests. We study the spectral distortions caused by ν SI with a large s-channel contribution, which can lead to a dip, bump, or cutoff on an initially smooth spectrum. Consequently, ν SI may be an exotic solution for features seen in the IceCube energy spectrum. More conservatively, IceCube neutrino data could be used to set model-independent limits on ν SI . Our phenomenological estimates provide guidance for more detailed calculations, comparisons to data, and model building.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/37080a2deb2bb3243a5626550e69eead136a6f21
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In Nuclear and High Energy Physics
Citations in the corpus
- IceCube-Gen2: the window to the extreme Universe (2020, background): “are coherent interactions between neutrinos and dark matter [327–333]; neutrinos and dark energy [334]; very-long-range Le − Lμ and Le − Lτ gauged interactions sourced by the universe’s electron content [286, 335–337]; and new interactions between high-energy cosmic neutrinos and low-energy relic ne”
- The POEMMA (Probe of Extreme Multi-Messenger Astrophysics) observatory (2020, methodology): “This has been studied before in the context of supernova neutrinos and TeV–PeV astrophysical neutrinos [110, 120–129].”
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