New Limit on Muon and Electron Lepton Number Violation from $K_L^0\to {\mu }^{\pm }{e}^{\mp }$ Decay

D. Ambrose

The most sensitive experiment to date to search for the muon and electron lepton number violating decay $K_L^0\to {\mu }^{\pm }{e}^{\mp }$ has detected no events consistent with this process.…