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Observations and implications of the ultrahigh-energy cosmic rays

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Reviews of Modern Physics

American Physical Society (APS)

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      End to the Cosmic-Ray Spectrum?

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        Pulsar Electrodynamics

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          Is Open Access

          Evidence for oscillation of atmospheric neutrinos

          We present an analysis of atmospheric neutrino data from a 33.0 kiloton-year (535-day) exposure of the Super-Kamiokande detector. The data exhibit a zenith angle dependent deficit of muon neutrinos which is inconsistent with expectations based on calculations of the atmospheric neutrino flux. Experimental biases and uncertainties in the prediction of neutrino fluxes and cross sections are unable to explain our observation. The data are consistent, however, with two-flavor nu_mu nu_tau oscillations with sin^2(2theta)>0.82 and 5x10^-4 < delta m^2 < 6x10^-3 eV^2 at 90% confidence level.
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            Journal
            RMPHAT
            Reviews of Modern Physics
            Rev. Mod. Phys.
            American Physical Society (APS)
            0034-6861
            1539-0756
            July 2000
            July 2000
            : 72
            : 3
            : 689-732
            10.1103/RevModPhys.72.689
            © 2000

            http://link.aps.org/licenses/aps-default-license

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