A theoretical reappraisal of branching ratios and CP asymmetries in the decays B → (Xd, Xs)l+l- and determination of the CKM parameters

A theoretical reappraisal of the branching ratios and CP asymmetries for the decays B → Xql+l-, with q equal to d,s, taking into account current theoretical uncertainties in the description of the inclusive decay amplitudes from the long-distance contributions, an improved treatment of the renormalization scale dependence, and other parametric dependencies. The dependence of (ΔΒd) and ΔR on the CKM parameters is worked out and the resulting constraints on the unitary triangle from an eventual measurement of ΔR are illustrated