Search for Dileptons in Z decay

Abstract

The lepton family number violation $Z$ boson decay, $Z\to e^{-}{e}^{-}{\mu }^{+}{\mu }^{+}$ or $e^{+}{e}^{+}{\mu }^{-}{\mu }^{-}$, mediated by a dilepton, e.g. from an SU(15) theory, is calculated. The branching ratio of such exotic decay for allowed dilepton masses is found to be smaller than 10${}^{-10}$.

Comments: 4 pages(2 figuires are not included), TRI-PP-92-96