Abstract
The decays of B mesons to a pair of charmless pseudoscalar (P) mesons are analyzed within a framework of flavor SU(3). Symmetry breaking is taken into account in tree (T) amplitudes through ratios of decay constants; exact SU(3) is assumed elsewhere. Acceptable fits to and branching ratios and CP asymmetries are obtained with tree, color-suppressed penguin and electroweak penguin amplitudes. Crucial additional terms for describing processes involving and include a large flavor-singlet penguin amplitude (S) as proposed earlier and a penguin amplitude associated with intermediate t and u quarks. For the mode a term associated with intermediate t and u quarks also may be needed. Values of the weak phase are obtained consistent with an earlier analysis of decays, where V denotes a vector meson, and with other analyses of CKM parameters.
- Received 14 April 2004
DOI:https://doi.org/10.1103/PhysRevD.70.034020
©2004 American Physical Society