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Is there evidence for sterile neutrinos in IceCube data?
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Data from the LSND and MiniBooNE experiments, and revised expectations of the antineutrino flux from nuclear reactors suggest the existence of eV-mass sterile neutrinos. 3+2 and 1+3+1 scenarios accommodate all relevant short-baseline neutrino data except for the low-energy MiniBooNE anomaly. We analyze the angular distribution of upward going atmospheric neutrino events in the IceCube-40 dataset for evidence of sterile neutrinos within these scenarios. Depending on how systematic uncertainties are handled, we find strong evidence for, or weak evidence against sterile neutrinos. We show that future IceCube data will definitively settle the issue.
Forward citations
Cited by 3 Pith papers
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Effective Matter Flavor Conversion Mediated by Pseudo-Sterile States as the Possible Origin of Neutrino Oscillation Anomalies
A sterile neutrino with a novel density-dependent matter potential Vs resolves multiple oscillation anomalies when Vs is negative and mixing angles are small.
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Sterile-active resonance: A global qualitative picture
An analytic effective theory of the sterile-active MSW resonance in the (3+1) model reveals that only three channels, P(νe→νe), P(ν̄e→ν̄e), and P(ν̄μ→ν̄τ), carry unsuppressed on-peak resonance effects.
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New parameter region in sterile neutrino searches: a scenario to alleviate cosmological neutrino mass bound and its testability at oscillation experiments
IceCube can test massless sterile neutrinos lighter than active neutrinos in the inverted-ordering regime, with sensitivity to sin^2 2theta24 ~ 10^-2 at |Delta m^2_41| ~ 0.2 eV^2, a region opened by the Farzan-Hannest...
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