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Signature of sterile species in atmospheric neutrino data at neutrino telescopes
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The MiniBooNE results have still not been able to comprehensively rule out the oscillation interpretation of the LSND experiment. So far the so-called short baseline experiments with energy in the MeV range and baseline of few meters have been probing the existence of sterile neutrinos. We show how signatures of these extra sterile states could be obtained in TeV energy range atmospheric neutrinos travelling distances of thousands of kilometers. Atmospheric neutrinos in the TeV range would be detected by the upcoming neutrino telescopes. Of course vacuum oscillations of these neutrinos would be very small. However, we show that resonant matter effects inside the Earth could enhance these very tiny oscillations into near-maximal transitions, which should be hard to miss. We show that imprint of sterile neutrinos could be unambiguously obtained in this high energy atmospheric neutrino event sample. Not only would neutrino telescopes tell the presence of sterile neutrinos, it should also be possible for them to distinguish between the different possible mass and mixing scenarios with additional sterile states.
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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