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Observation of Muon Neutrino Disappearance with the MINOS Detectors in the NuMI Neutrino Beam

Michael, D. et al. (2006) Observation of Muon Neutrino Disappearance with the MINOS Detectors in the NuMI Neutrino Beam. Physical Review Letters, 97 (19). p. 191801. ISSN 0031-9007

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Abstract

This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current νμ interactions are compared in two detectors located along the beam axis at distances of 1 and 735 km. With 1.27×1020 120 GeV protons incident on the NuMI target, 215 events with energies below 30 GeV are observed at the Far Detector, compared to an expectation of 336±14 events. The data are consistent with νμ disappearance via oscillations with |Δm322|=2.74-0.26+0.44×10-3  eV2 and sin⁡2(2θ23)>0.87 (68% C.L.).

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Schools: School of Applied Sciences
Depositing User: Sara Taylor
Date Deposited: 10 Jul 2012 15:30
Last Modified: 10 Jul 2012 15:30
URI: http://eprints.hud.ac.uk/id/eprint/14184

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