Charmless two-body B decays: A global analysis with QCD factorization

Abstract

In this paper, we perform a global analysis of $B\to PP$ and $PV$ decays with the QCD factorization approach. It is encouraging to observe that the predictions of QCD factorization are in good agreement with experiment. The best fit ${\hat{I}}^3$ is around $79^{\circ }$. The penguin-to-tree ratio $|P_{\ddot{I}€\ddot{I}€}/T_{\ddot{I}€\ddot{I}€}|$ of $\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays is preferred to be larger than 0.3. We also show the confidence levels for some interesting channels: $B^0\to \ddot{I}{€}^0\ddot{I}{€}^0$, $K^{+}{K}^{-}$ and $B^{+}\to \ddot{I}‰\ddot{I}{€}^{+}$, $\ddot{I}‰K^{+}$. For $B\to \ddot{I}€K^{\ast }$ decays, they are expected to have smaller branching ratios with more precise measurements.

20 pages, 4 figures, version to appear in Phys. Rev. D