Limits on sterile neutrino mixing using atmospheric neutrinos in Super-Kamiokande
By T. Abe, Y. Haga, Y. Hayato, M. Ikeda, K. Iyogi, J. Kameda, Y. Kishimoto, M. Miura, S. Moriyama, M. Nakahata and 116 more. 2014
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We present limits on sterile neutrino mixing using 4,438 live-days of atmospheric neutrino data from the Super-Kamiokande experiment. We search for fast oscillations driven by an eV$^2$-scale mass splitting and for oscillations into sterile neutrinos instead of tau neutrinos at the atmospheric mass splitting. When performing both these searches we assume that the sterile mass splitting is large, allowing $\sin^2(\Delta m^2 L/4E)$ to be approximated as $0.5$, and we assume that there is no mixing between electron neutrinos and sterile neutrinos ($|U_{e4}|^2 = 0$). No evidence of sterile oscillations is seen and we limit $|U_{\mu4}|^2$ to less than 0.041 and $|U_{\tau4}|^2$ to less than 0.18 for $\Delta m^2 > 0.8$ eV$^2$ at the 90% C.L. in a 3+1 framework. The approximations that can be made with atmospheric neutrinos allow these limits to be easily applied to 3+N models, and we provide our results in a generic format to allow comparisons with other sterile neutrino models.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/407dca4868b6fa3b990e1ce970a51b9bb6f2edf4
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In Nuclear and High Energy Physics
Citations in the corpus
- Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 2: The Physics Program for DUNE at LBNF (2015, background): “Atmospheric neutrinos provide a window into a range of new physics scenarios, and may allow DUNE to place limits on CPT violation [83], non-standard interactions [105], mass-varying neutrinos [106], sterile neutrinos [107], and Lorentz invariance violation [84].”
- Where are we with light sterile neutrinos? (2019, methodology): “A search of this nature was performed first by SuperKamiokande [119] and later by IceCube using the DeepCore inner array [120].”
- Neutrino non-standard interactions: A status report (2019, background): “Examples of constraints for averaged out heavy neutrinos in this regime can be [398, 400, 401].”
- Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics (2020, background): “2), non-standard interactions [225], mass-varying neutrinos [226], and sterile neutrinos [227].”
- Neutrinoless double beta decay versus other probes of heavy sterile neutrinos (2019, methodology): “From oscillations upper bounds have been placed by IceCube [232, 233], Super-Kamiokande [235] and NOνA [236].”
- Long-Baseline Neutrino Facility (LBNF) and Deep Underground Neutrino Experiment (DUNE) Conceptual Design Report Volume 1: The LBNF and DUNE Projects (2015, background): “Atmospheric neutrinos provide a window into a range of new physics scenarios, and may allow DUNE to place limits on CPT violation [83], non-standard interactions [105], mass-varying neutrinos [106], sterile neutrinos [107], and Lorentz invariance violation [84].”