Search for Electron Antineutrino Appearance at the Δm2∼1eV2 Scale
Abstract
The MiniBooNE Collaboration reports initial results from a search for ν¯μ→ν¯e oscillations. A signal-blind analysis was performed using a data sample corresponding to 3.39×1020 protons on target. The data are consistent with background prediction across the full range of neutrino energy reconstructed assuming quasielastic scattering, 200<EνQE<3000MeV: 144 electronlike events have been observed in this energy range, compared to an expectation of 139.2±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.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 2009
- DOI:
- 10.1103/PhysRevLett.103.111801
- arXiv:
- arXiv:0904.1958
- Bibcode:
- 2009PhRvL.103k1801A
- Keywords:
-
- 14.60.Lm;
- 14.60.Pq;
- 14.60.St;
- Ordinary neutrinos (nuW bosons;
- Neutrino mass and mixing;
- Non-standard-model neutrinos right-handed neutrinos etc.;
- High Energy Physics - Experiment
- E-Print:
- 5 pages, 3 figures, 2 tables