We study supersymmetric (SUSY) effects on $C_7(\mu_b)$ and $C'_7(\mu_b)$ which are the Wilson coefficients (WCs) for $b \to s \gamma$ at b-quark mass scale $\mu_b$ closely related to radiative $B$-meson decays. The SUSY-loop contributions calculated leading order (LO) in Minimal Supersymmetric Standard Model (MSSM) with general quark-flavour violation (QFV). For first time we perform a systemat...

We present an improved measurement of the standard model CP violation parameter sin 2φ1 (also known as sin 2β) based on a sample of 45×10 BB pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy ee collider. One neutral B meson is reconstructed in the J/ψK S, ψ(2S)K 0 S , χc1K 0 S , ηcK 0 S , J/ψK , or J/ψK L CP -eigenstate decay channel and the flavor of ...