Standard-model predictions for $\mathrm{CP}$ violation in $B^0$-meson decay

We examine the present set of constraints on the parameters of the standard model and use the unitarity triangle to present their allowed range. We give the implications of this for $\mathrm{CP}$ violation in the $B$-meson system as a function of top-quark mass, emphasizing what luminosity of an electronpositron collider is needed to guarantee a statistically significant asymmetry in one or more $B$ decay channels.