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

journal contribution
posted on 2023-06-08, 08:06 authored by D G Michael, D J Auty, Elisabeth FalkElisabeth Falk, Philip Harris, P A Symes, MINOS Collaboration
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}) > 0.87 (at 60% C.L.).

History

Publication status

  • Published

Journal

Physical Review Letters

ISSN

0031-9007

Publisher

American Physical Society

Issue

19

Volume

97

Page range

191801

Department affiliated with

  • Physics and Astronomy Publications

Notes

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)

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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