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Event Excess in the MiniBooNE Search for ν¯μν¯e Oscillations

A. A. Aguilar-Arevalo et al. (MiniBooNE Collaboration)
Phys. Rev. Lett. 105, 181801 – Published 26 October 2010

Abstract

The MiniBooNE experiment at Fermilab reports results from a search for ν¯μν¯e oscillations, using a data sample corresponding to 5.66×1020 protons on target. An excess of 20.9±14.0 events is observed in the energy range 475<EνQE<1250MeV, which, when constrained by the observed ν¯μ events, has a probability for consistency with the background-only hypothesis of 0.5%. On the other hand, fitting for ν¯μν¯e oscillations, the best-fit point has a χ2 probability of 8.7%. The data are consistent with ν¯μν¯e oscillations in the 0.1 to 1.0eV2 Δm2 range and with the evidence for antineutrino oscillations from the Liquid Scintillator Neutrino Detector at Los Alamos National Laboratory.

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  • Received 8 July 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.181801

© 2010 The American Physical Society

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Vol. 105, Iss. 18 — 29 October 2010

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