Gauge model of generation nonuniversality revisited

Six years ago, a gauge model of generation nonuniversality was proposed in which the τ lifetime was predicted to be longer, and $B^0$-B${¯}^0$ mixing to be greater, than in the standard model. Since current experimental data appear to favor both of these interpretations, an updated and improved analysis is here presented. In particular, a plausible branching fraction of the order ${10}^{\mathrm{-}4}$ is predicted for b→${\mathrm{sl}}^{+}$ $l^{\mathrm{-}}$, just below the present experimental limit and well above the standard-model expectation of ${10}^{\mathrm{-}6}$.