Neutral B-meson Mixing and $CP$ Violation at LHCb

The LHCb detector is a single-arm forward spectrometer that collects data at the LHC, designed for studies of flavour physics with high precision. We present a selection of recent measurements of mixing and CP-violating parameters, including sin 2β and weak phase ϕ (s), using several decays. A good understanding of the pollution from sub-leading penguin to pologies in these measurements can be achieved by measuring CP violation and polarization in the decay B(s) (0)→Jψ⁄K (0*) and B (0)→Jψ⁄ ρ (0). All results here presented are obtained using the full Run I dataset.