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

Research output: Contribution to journalJournal article

Published

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Journal publication date11/10/2011
JournalPhysical Review D – Particles and Fields
Journal number7
Volume84
Number of pages6
Original languageEnglish

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