Flavor SU(3) analysis of charmless B meson decays to two pseudoscalar mesons
Abstract
Global fits to charmless B --> PP decays in the framework of flavor SU(3) symmetry are updated and improved without reference to the 2β measured from the charmonium decay modes. Fit results directly constrain the (,η) vertex of the unitarity triangle, and are used to predict the branching ratios and CP asymmetries of all decay modes, including those of the Bs system. Different schemes of SU(3) breaking in decay amplitude sizes are analyzed. The major breaking effect between strangeness-conserving and strangeness-changing decays can be accounted for by including a ratio of decay constants in tree and color-suppressed amplitudes. The possibility of having a new physics contribution to K π decays is also examined from the data fitting point of view.
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