Search for Proton Decay via p -> e+ pi0 in a Large Water Cherenkov Detector

Physics – High Energy Physics – High Energy Physics - Experiment

Scientific paper

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7 pages, 5 eps figures, revtex, submitted to PRL

Scientific paper

10.1103/PhysRevLett.81.3319

We have searched for proton decay via p -> e+ pi0 using data from a 25.5
kton-year exposure of the Super-Kamiokande detector. We find no candidate
events with an expected background induced by atmospheric neutrinos of 0.1
events. From these data, we set a lower limit on the partial lifetime of the
proton to be 1.6E33 years at a 90% confidence level.

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