U (2) and minimal flavour violation in supersymmetry

Rather than sticking to the full U(3)(3) approximate symmetry normally invoked in Minimal Flavour Violation, we analyze the consequences on the current flavour data of a suitably broken U(2)(3) symmetry acting on the first two generations of quarks and squarks. A definite correlation emerges between the Delta F = 2 amplitudes M(K(0) -> (K) over bar (0)), M(B(d) -> (B) over bar (d)) and M(B(s) -> (B) over bar (s)), which can resolve the current tension between M(K(0) -> (K) over bar (0)) and M(B(d) -> (B) over bar (d)), while predicting M(B(s) -> (B) over bar (s)). In particular, the CP violating asymmetry in B(s)-> psi phi is predicted to be positive S(psi phi) = 0.12 +/- 0.05 and above its Standard Model value (S(psi phi) = 0.041 +/- 0.002). The preferred region for the gluino and the left-handed sbottom masses is below about 1 divided by 1.5 TeV. An existence proof of a dynamical model realizing the U(2)(3) picture is outlined.