A Search for Electron Antineutrino Appearance at the $Δm^2 \sim$ 1 $\mathrm{eV}^{2}$ Scale

Details A Search for Electron Antineutrino Appearance at the $Δm^2 \sim$ 1 $\mathrm{eV}^{2}$ Scale A Search for Electron Antineutrino Appearance at the $Δm^2 \sim$ 1 $\mathrm{eV}^{2}$ Scale

2009-04-13

arxiv.org/abs/0904.1958v2

Phys.Rev.Lett.103:111801,2009

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 3 figures, 2 tables

Scientific paper

The MiniBooNE Collaboration reports initial results from a search for $\bar{\nu}_{\mu}\to\bar{\nu}_e$ oscillations. A signal-blind analysis was performed using a data sample corresponding to $3.39 \times 10^{20}$ protons on target. The data are consistent with background prediction across the full range of neutrino energy reconstructed assuming quasielastic scattering, $200 < E_{\nu}^{QE} < 3000$ MeV: 144 electron-like events have been observed in this energy range, compared to an expectation of $139.2 \pm 17.6$ events. No significant excess of events has been observed, both at low energy, 200-475 MeV, and at high energy, 475-1250 MeV. The data are inconclusive with respect to antineutrino oscillations suggested by data from the Liquid Scintillator Neutrino Detector at Los Alamos National Laboratory.

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