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

Michael, D G, Auty, D J, Falk Harris, E, Harris, P G, Symes, P A and MINOS Collaboration, (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 rate and energy spectra of charged current muon neutrino interactions are compared in two detectors located along the beam axis at distances of 1 km and 735 km. With 1.27 x 10^{20} 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 \\\\\\\\\\\\\\\\pm 14.4 events. The data are consistent with muon neutrino disappearance via oscillation with |\\\\\\\\\\\\\\\\Delta m^2_{23}| = 2.74^{+0.44}_{-0.26} x 10^{-3} eV^2/c^4 and sin^2(2\\\\\\\\\\\\\\\\theta_{23}) &gt; 0.87 (at 60% C.L.).

Item Type: Article This paper was MINOS's first major result, confirming atmospheric neutrino oscillation and mass splitting. Authorship of this paper extends to the entire MINOS collaboration. Over 100 citations (SPIRES) School of Mathematical and Physical Sciences > Physics and Astronomy David Auty 06 Feb 2012 20:52 02 Jul 2019 21:32 http://sro.sussex.ac.uk/id/eprint/28519

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