Towards Precise Determinations of the CKM Matrix without Hadronic Uncertainties

A. J. Buras

We illustrate how the measurements of the CP asymmetries in $B_{d,s}^0$-decays together with a measurement of $Br(K_L\to {\pi }^{\circ }\nu \bar{\nu })$ or $Br(K^{+}\to {\pi }^{+}\nu \bar{\nu })$ and the known val…