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Search for Electron Antineutrino Appearance at the Delta m(2) similar to 1 eV(2) Scale

AuthorsSorel, Michel ; Aguilar-Arevalo, A. A.; Anderson, C. E.; Brice, S. J.; Brown, B. C.; Bugel, L.; Conrad, J. M.; Djurcic, Z.; Fleming, B. T.; Ford, R.; García, F. G.; Garvey, G. T.; Gonzales, J.; Grange, J.; Green, C.; Green, J. A.; Imlay, R.; Johnson, R. A.; Karagiorgi, G.; Katori, T.; Kobilarcik, T.; Linden, S. K.; Louis, W. C.; Mahn, K. B. M.; Marsh, W.; Mauger, C.; McGary, V. T.; Metcalf, W.; Mills, G. B.; Moore, C. D.; Mousseau, J.; Nelson, R. H.; Nienaber, P.; Nowak, J. A.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. C.; Ray, H.; Roe, B. P.; Russell, A. D.; Shaevitz, M. H.; Spitz, J.; Stancu, I.; Stefanski, R. J.; Tayloe, R.; Tzanov, M.; Water, R. Van de; Wascko, M. O.; White, D. H.; Wilking, M. J.; Zeller, G. P.; Zimmerman, E. D.; MiniBooNE Collaboration
Issue Date11-Sep-2009
PublisherAmerican Physical Society
CitationPhysical Review Letters 103(11): 111801 (2009)
AbstractThe MiniBooNE Collaboration reports initial results from a search for (nu) over bar (mu) -> (nu) over bar (e) oscillations. A signal-blind analysis was performed using a data sample corresponding to 3.39 x 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 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.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.103.111801
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