Analysis of enhanced β effects in minimal flavor violation GUT scenarios

We analyze a minimal supersymmetric standard model (MSSM) taking a minimal flavor violation structure at the GUT scale. We evaluate the parameters at the electroweak scale taking into account the full flavor structure in the evolution of the renormalization group equations. We concentrate mainly on the decay B-s ->mu(+)mu(-) and its correlations with other observables like BR(b -> s gamma), BR(b -> sl(+)l(-)), Delta M-Bs and the anomalous magnetic moment of the muon. We restrict our analysis to the regions in parameter space consistent with the dark matter constraints. We find that the BR(B-s ->mu(+)mu(-)) can exceed the current experimental limit in the regions of parameter space which are allowed by all other constraints thus providing an additional bound on supersymmetric parameters. This holds even in the constrained MSSM. Assuming a hypothetical measurement of BR(B-s ->mu(+)mu(-))similar or equal to 10(-7), we analyze the predicted MSSM spectrum and flavor violating decay modes of supersymmetric particles which are found to be small.