Implications of the measurements ofBs–B¯smixing on supersymmetric models

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We derive constraints on the mass insertion parameters from the recent measurements of ${B}_{s}--{\overline{B}}_{s}$ mixing, and discuss their implications on SUSY breaking mediation mechanisms and SUSY flavor models. Some SUSY flavor models are already excluded or disfavored by ${B}_{s}--{\overline{B}}_{s}$ mixing. We also discuss how to test the SM and SUSY models in the future experiments, by studying other $CP$ violating observables related to $b\ensuremath{\rightarrow}s$ transition, such as the time-dependent $CP$ asymmetry in ${B}_{d}\ensuremath{\rightarrow}\ensuremath{\phi}{K}_{S}$ and the direct $CP$ asymmetry in $B\ensuremath{\rightarrow}{X}_{s}\ensuremath{\gamma}$.