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Search for Proton Decay into Muon plus Neutral Kaon in Super-Kamiokande I, II, and III

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arxiv 1205.6538 v1 pith:U7QVTYIO submitted 2012-05-30 hep-ex

Search for Proton Decay into Muon plus Neutral Kaon in Super-Kamiokande I, II, and III

classification hep-ex
keywords exposurekiloton-yearprotondatadecaykaonmuonneutral
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We have searched for proton into muon plus neutral kaon using data from a 91.7 kiloton-year exposure of Super-Kamiokande-I, a 49.2 kiloton-year exposure of Super-Kamiokande-II, and a 31.9 kiloton-year exposure of Super-Kamiokande-III. The number of candidate events in the data was consistent with the atmospheric neutrino background expectation and no evidence for proton decay in this mode was found. We set a partial lifetime lower limit of 1.6x10^33 years at the 90% confidence level.

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