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Improved measurement of muon antineutrino disappearance in MINOS

Adamson, P. and Nowak, Jaroslaw (2012) Improved measurement of muon antineutrino disappearance in MINOS. Physical Review Letters, 108 (19). ISSN 1079-7114

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    Abstract

    We report an improved measurement of ν̅ μ disappearance over a distance of 735 km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a ν̅ μ-enhanced configuration. From a total exposure of 2.95×1020 protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of Δm̅ 2=[2.62-0.28+0.31(stat)±0.09(syst)]×10-3 eV2 and constrain the ν̅ μ mixing angle sin⁡2(2θ̅ )>0.75 (90% C.L.). These values are in agreement with Δm2 and sin⁡2(2θ) measured for νμ, removing the tension reported in [ P. Adamson et al. Phys. Rev. Lett. 107 021801 (2011)].

    Item Type: Article
    Journal or Publication Title: Physical Review Letters
    Additional Information: © 2012 American Physical Society
    Subjects:
    Departments: Faculty of Science and Technology > Physics
    ID Code: 66767
    Deposited By: ep_importer_pure
    Deposited On: 26 Sep 2013 10:18
    Refereed?: Yes
    Published?: Published
    Last Modified: 20 Sep 2017 01:38
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/66767

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