Super-Kamiokande data and atmospheric neutrino decay

Abstract
Neutrino decay has been proposed as a possible solution to the atmospheric neutrino anomaly, in light of recent data from the Super-Kamiokande experiment. We investigate this hypothesis by means of a quantitative analysis of the zenith angle distributions of neutrino events in Super-Kamiokande, including the latest (45 kTy) data. We find that the neutrino decay hypothesis fails to reproduce the observed distributions of muons.
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