New Results on Rare and Forbidden Semileptonic $K^{+}$ Decays

Peter Truoel

Experiment E865 at the Brookhaven AGS was set up primarily to search for the lepton flavour violating decay $K^{+}\to {\pi }^{+}{\mu }^{+}{e}^{-}$ ($K_{\pi \mu e}$) with high sensitivity. The flexibility of…