The measurement of the CP-violating phase, $\phi_{s} , and the penguin contributions in $B_s^0 \rightarrow \frac{J}{\psi \varphi}$ at LHCb
Abstract
The CP-violating phase,φs, in B0SJ/ψφ, is an excellent probe for the discovery of physics beyond standard Model. LHCb has obtained the world's mostprecise value of the phase φs, which is consistent with the Standard Model, but does not exclude the presence of New Physics in φs. To detect it, the determination of the sub-dominant penguin contributions from the Standard Model becomes crucial now. We present the latest LHCb results on φs and we outline the method to measure the impact of penguin diagrams in φs.