Based on the most recent data in charmless B decays including the very recently reported large direct CP violations, it is shown that the weak phase γ can well be extracted without two-fold ambiguity even only from two decay modes ππ and πK, and its value is remarkably consistent with the global standard model fit at a compatible accuracy. A fit to all the ππ, πK data favor both large electrowe...

We give the complete O(p) bosonization of the electroweak Penguin operators Q7,8 and compare the result with that of the gluon Penguin operators Q5,6. We find that, in addition to the usual (constant and current-current) parts, there are three new terms not discussed previously in the literature. Two of these are present in the factorization approximation and should be included in the standard ...

An analysis of B → Kπ decays is given, assuming a small elastic πK rescattering phase difference. Using factorization model elastic πK rescattering phase difference. Using factorization model only for the tree-level and electroweak penguin amplitudes, we show that the strong penguin amplitude, its absorptive part and the CP-violation weak phase γ can be obtained from the measured B → Kπ branchi...

We show that large electroweak penguin effects invalidate previously suggested methods to constraint and to determine the CP violating phase γ of the KM matrix using B̄0 → K−π+, π−π+ and B → K̄0π− decays. We obtain new results on the constraint and the determination of γ. It is found that present central values of experimental data on these decays exclude the range between 0.57 and 0.87 for γ whi...

An analysis of B → Kπ decays is given, assuming a small elastic πK rescattering phase difference. Using factorization model elastic πK rescattering phase difference. Using factorization model only for the tree-level and electroweak penguin amplitudes, we show that the strong penguin amplitude, its absorptive part and the CP-violation weak phase γ can be obtained from the measured B → Kπ branchi...

The 2.5σ discrepancy between theory and experiment observed in the difference ACP(B − → πK)−ACP(B̄ → π+K−) can be explained by a new electroweak penguin amplitude. Motivated by this result, we analyse the purely isospinviolating decays B̄s → φρ0 and B̄s → φπ0, which are dominated by electroweak penguins, and show that in presence of a new electroweak penguin amplitude their branching ratio can be ...