Search for Doubly Charged Weak Currents throughK+→π−e+μ+

Abstract

We present results of a search for the decay mode $K^{+}\to {\pi }^{-}{e}^{+}{\mu }^{+}$ which requires doubly charged weak currents for its existence. Limits are also obtained on the branching ratios for the decay modes $K^{+}\to {\pi }^{+}{e}^{+}{\mu }^{-}$ and $K^{+}\to {\pi }^{+}{e}^{+}{e}^{-}$. We give a comparison of some present experimental limits on neutral and doubly charged weak currents.