Angular analysis and CP violation studies in B decays at CMS

Angular distributions of the decay B⁰ → K^*0μ⁺μ⁻ are a clean probe of physics beyond the standard model. In particular the forward-backward asymmetry and other variables which can be determined as a function of q² provide fruitful information from a single decay channel. An angular and proper decay time analysis is applied to the B_s → J/ψφ decays. The B_s signal candidates are reconstructed and used to extract the mixing phase φ_s. The theoretical prediction of the φ_s angle is particularly robust, thus any deviation from the prediction can be a smoking gun signal of new physics