Search for proton decay into a single charged antilepton and a massless invisible particle using the full pure water data set of Super-Kamiokande
Kamiokande Collaboration, Y. L. Liu, K. Terada, K. Abe et autres
A search for proton decay via $p\rightarrow l^{+}+X$, where $l^{+}$ is a positively charged lepton and $X$ is an invisible, massless, neutral particle, was performed using a 401~kton$\cdot$years exposure representing the entire pure water phase of Super-Kamiokande. No significant indication of a …