# Search for Proton Decay through p --> ν̄K + in a Large Water Cherenkov Detector

@article{Hayato1999SearchFP,
title={Search for Proton Decay through p --> $\nu$̄K + in a Large Water Cherenkov Detector},
author={Super-Kamiokande Collaboration Y. Hayato and Matthew Earl and et.al.},
journal={Physical Review Letters},
year={1999},
volume={83},
pages={1529-1533}
}
• Published 21 April 1999
• Physics
• Physical Review Letters
We present results of a search for proton decays, $p \to \bar{\nu} K^+$, using data from a 33 kton$\cdot$year exposure of the Super-Kamiokande detector. Two decay modes of the kaon, $K^+ \to \mu^+ \nu_{\mu}$ and $K^+ \to \pi^+ \pi^0$, were studied. The data were consistent with the background expected from atmospheric neutrinos; therefore a lower limit on the partial lifetime of the proton $\tau / B(p \to \bar{\nu} K^+)$ was found to be $6.7 \times 10^{32}$ years at 90% confidence level.
75 Citations

## Figures from this paper

### Low Energy Neutrino Physics after SNO and KamLAND

In the recent years important discoveries in the field of low energy neutrino physics (E$_\nu$ in the $\approx$ MeV range) have been achieved. Results of the solar neutrino experiment SNO show

### Signatures of nucleon disappearance in large underground detectors

• Physics
• 2003
For neutrons bound inside nuclei, baryon instability can manifest itself as a decay into undetectable particles (e.g., $\it n \to \nu \nu \bar{\nu}$), i.e., as a disappearance of a neutron from its

### Inclusive nucleon decay searches as a frontier of baryon number violation

• Physics
Physical Review D
• 2020
Proton decay, and the decay of nucleons in general, constitutes one of the most sensitive probes of high-scale physics beyond the Standard Model. Most of the existing nucleon decay searches have

### Neutral-current background induced by atmospheric neutrinos at large liquid-scintillator detectors. I. Model predictions

• Physics
• 2020
The experimental searches for diffuse supernova neutrino background and proton decay in next-generation large liquid-scintillator (LS) detectors are competitive with and complementary to those in the

### Muon neutrino charged current quasi-elastic interactions in the T2K off-axis near detector

T2K (Tokai-to-Kamioka) is a long-baseline neutrino oscillation experiment, currently operating in Japan, built to precisely measure the mixing angle θ13, using the electron neutrino appearance

### Results from Super-Kamiokande and K2K

• Physics
• 2003
Results from Super-Kamiokande-I’s entire 1496 live days of solar neutrino data are presented, including the absolute flux, energy spectrum, zenith angle (day/night) and seasonal variation. The

## References

SHOWING 1-3 OF 3 REFERENCES

### For a review, see P.Langacker

• Phys. Rev. Lett
• 1974

### Section: Errors and confidence intervals -Bounded physical region

• Review of Particle Physics