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CKM matrix from non-leptonic B-decays

A. Salim Safir
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Abstract

We analyze the impact of the forthcoming CP-violating observables in the $B_s\to K^+ K^-$ system, combined with the precise measurement of $\sin2β$ , in the extraction of the CKM matrix. Computing the penguin parameters $(r, θ)$ within QCD factorization yields a precise determination of $(\barρ, \barη)$, reflected by a weak dependence on $θ$, which is shown to be a second order effect. Using the SU(3)-flavour symmetry argument and the current $B$-factories data provided by the $B_d \to π^+ π^-$ modes, we complement the $B_s \to K^+ K^-$ CP-violating observables in a variety of ways, in particular we find that $S_{KK}>0$. Finally, we investigate systematically the SU(3)-symmetry breaking factor within QCD factorization.

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A. Salim Safir. 2004-10-11. CKM matrix from non-leptonic B-decays. https://doi.org/10.1142/9789812702227_0178

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