Charmless two-body B(s)→VP decays in soft collinear effective theory

We provide the analysis of charmless two-body B -> VP decays under the framework of the soft collinear effective theory (SCET), where V(P) denotes a light vector (pseudoscalar) meson. Besides the leading power contributions, some power corrections (chiraly enhanced penguins) are also taken into account. Using the current available B -> PP and B -> VP experimental data on branching fractions and CP asymmetry variables, we find two kinds of solutions in chi(2) fit for the 16 nonperturbative inputs which are essential in the 87 B -> PP and B -> VP decay channels. Chiraly enhanced penguins can change several charming penguins sizably, since they share the same topology. However, most of the other nonperturbative inputs and predictions on branching ratios and CP asymmetries are not changed too much. With the two sets of inputs, we predict the branching fractions and CP asymmetries of other modes especially B-s -> VP decays. The agreements and differences with results in QCD factorization and perturbative QCD approach are analyzed. We also study the time-dependent CP asymmetries in channels with CP eigenstates in the final states and some other channels such as (B) over bar (0)/B-0 ->pi(+/-)rho(-/+) and (B) over bar (0)(s)/B-s(0)-> K-+/- K*(-/+). In the perturbative QCD approach, the (S-P)(S+P) penguins in annihilation diagrams play an important role. Although they have the same topology with charming penguins in SCET, there are many differences between the two objects in weak phases, magnitudes, strong phases, and factorization properties.