Abstract
We report results of a search for oscillations involving a light sterile neutrino over distances of 1.04 and 735 km in a νμ-dominated beam with a peak energy of 3 GeV. The data, from an exposure of 10.56×1020 protons on target, are analyzed using a phenomenological model with one sterile neutrino. We constrain the mixing parameters θ24 and Δm412 and set limits on parameters of the four-dimensional Pontecorvo-Maki-Nakagawa-Sakata matrix, |Uμ4|2 and |Uτ4|2, under the assumption that mixing between νe and νs is negligible (|Ue4|2=0). No evidence for νμ→νs transitions is found and we set a world-leading limit on θ24 for values of Δm4121 eV2.
Original language | English (US) |
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Article number | 151803 |
Journal | Physical review letters |
Volume | 117 |
Issue number | 15 |
DOIs | |
State | Published - Oct 7 2016 |
Bibliographical note
Publisher Copyright:© 2016 American Physical Society.