Signals of supersymmetric flavor models in B physics

If the mechanism of supersymmetry breaking is not flavor blind, some flavor symmetry is likely to be needed to prevent excessive flavor changing neutral current effects. We discuss two flavor models [based, respectively, on a U(2) and on a SU(3) horizontal symmetry] providing a good fit to fermion masses and mixings and particularly constraining the supersymmetry soft breaking terms. We show that, while reproducing successfully the unitarity triangle fit, it is possible to obtain sizable deviations from the standard model predictions for three clean B-physics observables: the time dependent CP asymmetries in B-d-->J/psiK(0) and in B-s-->J/psi phi and the B-s-(B) over bar (s) mass difference, Our analysis exhibits by means of two explicit realizations that in supersymmetric theories with a new flavor structure, in addition to the Yukawa matrices, there exist concrete potentialities for revealing supersymmetry indirectly in theoretically clean B-physics observables.