U-spin Implication for Bs Physics and New Physics

With U-spin symmetry, b → s and b → d penguin decays could be a subtle probe of CP violating new physics contributions. We show that, for B → PP (P stands for a pseudoscalar meson), the U-spin relation is expected to be violated for only one decay pair by assuming that new physics affects only b → s transition processes. We also very shortly discuss the polarizations of two types of U-spin pairs for B → V V (V stands for a vector meson). This article describes my poster presentation at the 6 Flavor Physics and CP Violation Conference held at National Taiwan University (5/5/08 ∼ 5/9/08).