Model of Weak Interactions with a 300-BeV Cutoff

A model of weak interactions is displayed which preserves all the observed symmetries of weak interactions in lowest order. It is mediated by three intermediate vector bosons with their respective antiparticles, and also contains a massive neutral muon-type lepton and electron-type lepton, so altogether there are two lepton triplets: $e$, ${\nu }_e$, ${\lambda }_e$ and $\mu$, ${\nu }_{\mu }$, ${\lambda }_{\mu }$. Higher-order corrections diverge, but for a cutoff $\Lambda \sim 300$ BeV, i.e., $G_F{\Lambda }^2\sim 1$, the model is shown to be compatible with present experimental limits.