Is the ${\nu }_{\mu }-->{\nu }_s$ oscillation solution to the atmospheric neutrino anomaly excluded by the superKamiokande data?

Abstract

Recently the SuperKamiokande collaboration have claimed that their data exclude the ${\nu }_{\mu }-->{\nu }_s$ solution to the atmospheric neutrino anomaly at more than 99% C.L. We critically examine this claim.

arXiv commentnew improved version, 6 pages with figs

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• The hidden sterile neutrino and the (2+2) sum rule
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