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Search for the disappearance of muon antineutrinos in the NuMI neutrino beam

Research output: Contribution to journalJournal article

Published

Article number071103
<mark>Journal publication date</mark>11/10/2011
<mark>Journal</mark>Physical Review D – Particles and Fields
Issue7
Volume84
Number of pages6
<mark>Original language</mark>English

Abstract

We report constraints on antineutrino oscillation parameters that were obtained by using the two MINOS detectors to measure the 7% muon antineutrino component of the NuMI neutrino beam. In the Far Detector, we select 130 events in the charged-current muon antineutrino sample, compared to a prediction of 136.4±11.7(stat)-8.9+10.2(syst) events under the assumption |Δm̅ 2|=2.32×10-3  eV2, sin⁡2(2θ̅ )=1.0. Assuming no oscillations occur at the Near Detector baseline, a fit to the two-flavor oscillation approximation constrains |Δm̅ 2|<3.37×10-3  eV2 at the 90% confidence level with sin⁡2(2θ̅ )=1.0.

Bibliographic note

© 2011 American Physical Society