Search for Trilepton Nucleon Decay via $p\to e^{+}\nu \nu$ and $p\to {\mu }^{+}\nu \nu$ in the Super-Kamiokande Experiment

Abstract

The trilepton nucleon decay modes $p\to e^{+}\nu \nu$ and $p\to {\mu }^{+}\nu \nu$ violate $|\Delta (B-L)|$ by two units. Using data from a 273.4 kiloton year exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of ${\tau }_{p\to e^{+}\nu \nu }>1.7\times 10^{32}$ years and ${\tau }_{p\to {\mu }^{+}\nu \nu }>2.2\times 10^{32}$ years at a $90\%$ confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.

References in corpus (2)

• Calculation of atmospheric neutrino flux using the interaction model calibrated with atmospheric muon data
• Search for Nucleon Decay into Charged Anti-lepton plus Meson in Super-Kamiokande I and II

Cited by in corpus (8)

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• Baryon-Number-Violating Nucleon and Dinucleon Decays in a Model with Large Extra Dimensions
• Improved Lower Bounds on Partial Lifetimes for Nucleon Decay Modes
• Proton decay at 1-loop
• Exploring neutrinos from proton decays catalyzed by GUT monopoles in the Sun
• Semi-leptonic three-body proton decay modes from light-cone sum rules
• Renormalization-group-improved constraints on dimension-7 baryon-number-violating operators