Radiative correction, mixing, and CP violation in the B meson system

We study three major aspects in the B meson system in the standard model and its extensions: QED radiative corrections, BB¯ mixing, and CP asymmetry. We estimate the isospin-violating QED radiative corrections to the charged-to-neutral ratios of two different types of decay rates Gamma(B + → J/psiK+)/Gamma( B0 → J/psiK 0) and Gamma(B+ → D+SD&d1;0 )/Gamma(B0 → D+SD- ) taking into account the form factors of the mesons based on the vector meson dominance model, and compare them with the results obtained for the point-like mesons. We also evaluate BB¯ mixing and CP asymmetries in B → J/psiK s and B → &phis;Ks decays as well as B+/- → &phis; K(*)+/- decays in general left-right models using the effective Hamiltonian approach without imposing manifest or pseudomanifest left-right symmetry. Based on recent measurements revealing large CP violation, we show that a nonmanifest type model is more favored than a manifest or pseudomanifest type.