JUNO Sensitivity on Proton Decay $p\to \bar{\nu }{K}^{+}$ Searches

Abstract

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar{\nu }{K}^{+}$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu }{K}^{+}$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6\times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel.

arXiv comment14 pages, 12 figures, an author added

References in corpus (16)

• A Unified Approach to the Classical Statistical Analysis of Small Signals
• Neutrino Physics with JUNO
• From eV to EeV: Neutrino Cross Sections Across Energy Scales
• Proton stability in grand unified theories, in strings, and in branes
• Electron- and neutrino-nucleus scattering in the impulse approximation regime
• Search for Proton Decay via $p\to e^{+}{\pi }^0$ and $p\to {\mu }^{+}{\pi }^0$ in 0.31 megaton$\cdot$years exposure of the Super-Kamiokande Water Cherenkov Detector
• Search for Proton Decay via $p\to \nu K^{+}$ using 260 kiloton$\cdot$year data of Super-Kamiokande
• Search for proton decay via $p\to e^{+}{\pi }^0$ and $p\to {\mu }^{+}{\pi }^0$ with an enlarged fiducial volume in Super-Kamiokande I-IV
• Calibration Strategy of the JUNO Experiment
• Simulations from a new neutrino event generator
• Search for the proton decay p->K+antineutrino in the large liquid scintillator low energy neutrino astronomy detector LENA
• Mass production and characterization of 3-inch PMTs for the JUNO experiment
• Removal Energies and Final State Interaction in Lepton Nucleus Scattering
• A quantitative approach to select PMTs for large detectors
• Search for the proton decay mode $p\to \overline{\nu }{K}^{+}$ with KamLAND
• Implementation of residual nucleus de-excitations associated with proton decays in ${}^{12}\mathrm{C}$ based on the GENIE generator and TALYS code

Cited by in corpus (5)

• Prediction of Energy Resolution in the JUNO Experiment
• Baryon Number Violation: From Nuclear Matrix Elements to BSM Physics
• Status and Prospects of the JUNO Experiment
• Design, waterproofing, and mass production of the 3-inch PMT frontend system of JUNO
• Exploring flavour space of an economical SU(5) GUT in future proton decay measurements