We combine all the available experimental information on B(S) mixing, including the recent tagged analyses of B(s) -> J/Psi phi by the CDF and Dempty set collaborations. We find that the phase of the B(s) mixing amplitude deviates about 2.5 sigma from the Standard Model prediction. While no single Tevatron experiment has a significant evidence yet, all the constraints show a remarkable agreement with the combined result. This is an interesting hint of physics beyond the Standard Model. In particular, this result disfavours New Physics models with Minimal Flavour Violation with the same significance.
Bona, M., Ciuchini, M., Franco, E., Lubicz, V., Martinelli, G., Parodi, F., et al. (2008). Discrepancy in the Unitarity Triangle fit from b -> s transitions. In Proceedings of the 16th International Conference on Supersymmetry and the Unification of Fundamental Interactions (pp.338-341).