Unexplained Excess of Electronlike Events from a 1-GeV Neutrino Beam

6533b862fe1ef96bd12c6ea7

RESEARCH PRODUCT

Unexplained Excess of Electronlike Events from a 1-GeV Neutrino Beam

Y. Liu D. H. White G. Karagiorgi G. Karagiorgi R. H. Nelson M. J. Wilking W. Marsh D. W. Schmitz C.d. Moore D. C. Cox Daniel Finley R. B. Patterson Michael H. Shaevitz Peter Daniel Meyers G. Mcgregor T. Kobilarcik G. B. Mills D. Perevalov B. P. Roe C. C. Polly C. C. Polly G. P. Zeller G. P. Zeller V. T. Nguyen V. T. Nguyen Haijun Yang P. Nienaber R. Imlay Teppei Katori S. J. Brice R. Ford C. Green C. Green David Smith I. Kourbanis H. A. Tanaka M. O. Wascko L. Bugel R. Tayloe J. A. Green J. A. Green B. C. Brown I. Stancu E. D. Zimmerman F. C. Shoemaker Kendall Mahn A. D. Russell C. E. Anderson Janet Conrad Janet Conrad J. L. Raaf M. Tzanov F. G. Garcia R. Schirato B. T. Fleming S. K. Linden R. J. Stefanski V. D. Sandberg Alexis A. Aguilar-arevalo E.j. Prebys F. Mills R. A. Johnson Jun Cao M. Sodeberg M. Sung Z. Djurcic G. T. Garvey T. L. Hart S. Ouedraogo M. Sorel S. Koutsoliotas E. Laird A. O. Bazarko P. H. Kasper J. M. Link P. Spentzouris William C. Louis E. Hawker E. Hawker H. Ray H. Ray R. G. Van De Water J. A. Nowak W. Metcalf Jocelyn Monroe Jocelyn Monroe A. Curioni L. Coney

subject

Physics Particle physics Scattering Hadron Astrophysics (astro-ph)General Physics and Astronomy FOS: Physical sciences Astrophysics High Energy Physics - Experiment Nuclear physics MiniBooNE High Energy Physics - Phenomenology High Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)Neutrino Nucleon Neutrino oscillation Energy (signal processing)Lepton

description

The MiniBooNE Collaboration observes unexplained electronlike events in the reconstructed neutrino energy range from 200 to 475 MeV. With 6.46 x 10(20) protons on target, 544 electronlike events are observed in this energy range, compared to an expectation of 415.2 +/- 43.4 events, corresponding to an excess of 128.8 +/- 20.4 +/- 38.3 events. The shape of the excess in several kinematic variables is consistent with being due to either nu(e) and (nu) over bar (e) charged-current scattering or nu(mu) neutral-current scattering with a photon in the final state. No significant excess of events is observed in the reconstructed neutrino energy range from 475 to 1250 MeV, where 408 events are observed compared to an expectation of 385.9 +/- 35.7 events.

year	journal	country	edition	language
2009-03-13

10.1103/physrevlett.102.101802 http://hdl.handle.net/10261/20990