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The B-CP Puzzles in QCD Factorization

Published 26 Dec 2010 in hep-ph | (1012.5504v1)

Abstract: Within the framework of QCD factorization (QCDF), power corrections due to penguin annihilation can account for theobserved rates of penguin-dominated two-body decays of $B$ mesons and direct CP asymmetries $A_{CP}(K-\pi+)$, $A_{CP}((K{*-}\pi+)$, $A_{CP}((K-\rho0)$ and $A_{CP}((\pi+\pi-)$. However, the predicted direct CP-violating effects in QCDF for $B-\to K-\pi0,K-\eta,\pi-\eta$ and $\bar B0\to\pi0\pi0$ are wrong in signs when confronted with experiment. We consider two different types of power correction effects in order to resolve the CP puzzles and rate deficit problems with penguin-dominated two-body decays of $B$ mesons and color-suppressed tree-dominated $\pi0\pi0$ and $\rho0\pi0$ modes: penguin annihilation and soft corrections to the color-suppressed tree amplitude.

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