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.

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Cited by in corpus (19)

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• Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment
• Dark Matter Searches for Monoenergetic Neutrinos Arising from Stopped Meson Decay in the Sun
• Light particles with baryon and lepton numbers
• Coloured Scalar Mediated Nucleon Decays to Invisible Fermion
• Baryon Number, Lepton Number, and Operator Dimension in the SMEFT with Flavor Symmetries
• Baryon-Number-Violating Nucleon and Dinucleon Decays in a Model with Large Extra Dimensions
• $\Delta L=3$ processes: Proton decay and LHC
• Improved Lower Bounds on Partial Lifetimes for Nucleon Decay Modes
• Fermion Masses and Mixings, Leptogenesis and Baryon Number Violation in Pati-Salam Model
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• Nucleon and dinucleon decays to leptonic final states in a left-right symmetric model with large extra dimensions
• High-scale baryogenesis with testable neutron-antineutron oscillation and dark matter
• Semi-leptonic three-body proton decay modes from light-cone sum rules
• Exploring neutrinos from proton decays catalyzed by GUT monopoles in the Sun
• Renormalization-group-improved constraints on dimension-7 baryon-number-violating operators