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Unexplained excess of electron-like events from a 1-GeV neutrino beam

Aguilar-Arevalo, A.A. and Nowak, Jaroslaw (2009) Unexplained excess of electron-like events from a 1-GeV neutrino beam. Physical Review Letters, 102 (10). ISSN 1079-7114

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    Abstract

    The MiniBooNE Collaboration observes unexplained electronlike events in the reconstructed neutrino energy range from 200 to 475 MeV. With 6.46×1020 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 νe and ν̅ e charged-current scattering or νμ 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.

    Item Type: Article
    Journal or Publication Title: Physical Review Letters
    Additional Information: © 2009 The American Physical Society
    Subjects:
    Departments: Faculty of Science and Technology > Physics
    ID Code: 66795
    Deposited By: ep_importer_pure
    Deposited On: 26 Sep 2013 14:53
    Refereed?: Yes
    Published?: Published
    Last Modified: 21 Sep 2017 05:49
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/66795

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