The B-CP Puzzles in QCD Factorization

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 $A_{CP}(K^{-}{\pi }^{+})$, $A_{CP}((K^{\ast -}{\pi }^{+})$, $A_{CP}((K^{-}{\rho }^0)$ and $A_{CP}(({\pi }^{+}{\pi }^{-})$. However, the predicted direct CP-violating effects in QCDF for $B^{-}\to K^{-}{\pi }^0,K^{-}\eta ,{\pi }^{-}\eta$ and ${\bar{B}}^0\to {\pi }^0{\pi }^0$ 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 ${\pi }^0{\pi }^0$ and ${\rho }^0{\pi }^0$ modes: penguin annihilation and soft corrections to the color-suppressed tree amplitude.

talk presented at the 15th International Conference in QCD, June 28- July 3, 2010, Montpellier, France

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Cited by in corpus (1)

• Implications of Family Nonuniversal $Z^{\prime }$ Model on B -->K_0^* pi Decays