The trilepton nucleon decay modes p→e+νν and p→μ+νν violate |Δ(B-L)| by two units. Using data from a 273.4 ktyr exposure of Super-Kamiokande a search for these decays yields a fit consistent with no signal. Accordingly, lower limits on the partial lifetimes of τp→e+νν>1.7×1032 years and τp→μ+νν>2.2×1032 years at a 90% confidence level are obtained. These limits can constrain Grand Unified Theories which allow for such processes.
ASJC Scopus subject areas
- Physics and Astronomy(all)