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Probing Non-Standard Interaction of Neutrinos with IceCube and DeepCore
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We consider effects of the Non-Standard Interactions (NSI) on oscillations of the high energy atmospheric neutrinos. The \nu_\mu-oscillograms are constructed and their dependence on the NSI strength parameters \epsilon_{\alpha \beta} studied. We computed zenith angle distributions of the \nu_\mu-events in the presence of NSI in different energy regions. The distributions are confronted with the IceCube-79 (high energy sample) and the DeepCore (low energy sample) data and constraints on the strength parameters |\epsilon_{\mu \tau}| < 6x10^-3 and |\epsilon_{\mu\mu}-\epsilon_{\tau\tau}| < 3x10^-2 (90% C.L.) have been obtained. Future measurements of the zenith angle distributions by DeepCore in smaller energy bins will allow to improve the bounds by factor 2 - 3. We discuss the signatures of NSI in zenith angle and energy distributions of events which allow to discriminate them from the effects of sterile neutrinos.
Forward citations
Cited by 4 Pith papers
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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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$\delta_{CP}$-free constraints on NSI parameters $\varepsilon_{e\mu}$ and $\varepsilon_{e\tau}$ using high-purity $\nu_\mu$ CC events at IceCube DeepCore
IceCube DeepCore atmospheric neutrino data yields δ_CP-independent constraints on NSI parameters ε_eμ and ε_eτ that are consistent with standard interactions.
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Search for non-standard neutrino interactions with the first six detection units of KM3NeT/ORCA
No non-standard neutrino interactions were found in 5828 atmospheric neutrino events from KM3NeT/ORCA6, yielding 90% CL limits on four NSI coupling parameters.
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