Predictions of selected flavor observables within the standard model

This paper gathers a selection of standard model predictions issued from the metrology of the Cabibbo-Kobayashi-Maskawa parameters performed by the CKMfitter group. The selection includes purely leptonic decays of neutral and charged $B$, $D$, and $K$ mesons. In the light of the expected measurements from the LHCb experiment, special attention is given to the radiative decay modes of $B$ mesons as well as to the $B$-meson mixing observables, in particular the semileptonic charge asymmetries $a_{\mathrm{SL}}^{d,s}$ which have been recently investigated by the D0 experiment at Tevatron. Constraints arising from rare kaon decays are addressed, in light of both current results and expected performances of future rare kaon experiments. All results have been obtained with the CKMfitter analysis package, featuring the frequentist statistical approach and using Rfit to handle theoretical uncertainties.

Figure 1

Constraints on the CKM $(\overline{\rho },\overline{\eta })$ coordinates from the global SM CKM fit. Regions outside the colored areas have $\mathrm{C}.\mathrm{L}.>95.45\%$. For the combined fit the yellow area inscribed by the contour line represents points with $\mathrm{C}.\mathrm{L}.<95.45\%$. The shaded area inside this region represents points with $\mathrm{C}.\mathrm{L}.<68.3\%$.