Abstract
We provide a systematic study of charmless B s →PP, PV, VV decays (P and V denote pseudoscalar and vector mesons, respectively) based on an approximate six-quark operator effective Hamiltonian from QCD. The calculation of the relevant hard-scattering kernels is carried out, the resulting transition form factors are consistent with the results of QCD sum-rule calculations. By taking into account important classes of power corrections involving “chirally enhanced” terms and the vertex corrections as well as weak annihilation contributions with non-trivial strong phase, we present predictions for the branching ratios and CP asymmetries of B s decays into PP, PV and VV final states, and also for the corresponding polarization observables in VV final states. It is found that the weak annihilation contributions with non-trivial strong phase have remarkable effects on the observables in the color-suppressed and penguin-dominated decay modes. In addition, we discuss the SU(3) flavor symmetry and show that the symmetry relations are generally respected.
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Su, F., Wu, YL., Yang, YB. et al. Charmless B s →PP, PV, VV decays based on the six-quark effective Hamiltonian with strong phase effects II. Eur. Phys. J. C 72, 1914 (2012). https://doi.org/10.1140/epjc/s10052-012-1914-4
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DOI: https://doi.org/10.1140/epjc/s10052-012-1914-4