The latest three results from LHCb with decays of B-mesons to charmonia states are presented.
The first measurement of the CP-violating phase \(\phi_s\) in the decay with electrons \(B_s^0 \to J/\psi (\to e^+ e^-) \phi\) is shown.
Results of an updated search of the rare decay \(B^0 \to J/\psi \phi\) are given.
A precise measurement of the fragmentation fraction ratio of \(B_s^0\) and \(B^0\), \(f_s/f_d\), extracted from a combination of most up-to-date LHCb results is reported.