Search for nucleon decay into charged antilepton plus meson in 0.316 megaton$\cdot$years exposure of the Super-Kamiokande water Cherenkov detector

Kamiokande Collaboration

We have searched for proton decays into a charged antilepton ($e^{+}$, ${\mu }^{+}$) plus a meson ($\eta$, ${\rho }^0$, $\omega$) and neutron decays into a charged antilepton ($e^{+}$, ${\mu }^{+}$) plus a meson…