Dilepton gauge bosons: Present status and future prospects.

Abstract

Dilepton gauge bosons which appear in a class of unified models are studied both from the point of view of existing data and of future experiments. Present data allow masses only above 120 GeV. Future experiments in ${e}^{+}{e}^{\ensuremath{-}}$ scattering can improve this bound to 600 GeV (CERN ${e}^{+}{e}^{\ensuremath{-}}$ collider LEP II with $\sqrt{s}=200$ GeV) and to 1500 GeV (Next Linear Collider ${e}^{+}{e}^{\ensuremath{-}}$ with $\sqrt{s}=500$ GeV). The process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}{\ensuremath{\mu}}^{\ensuremath{-}}$ could provide an excellent signature for the existence of dilepton gauge bosons in an ${e}^{\ensuremath{-}}{e}^{\ensuremath{-}}$ collider, even for $\sqrt{s}=100$ GeV.