Mixing and $CP$ violation results in $b$-hadron decays at LHCb

Abstract

Measurements of mixing and $CP$ violation in $b$-hadron decays are great probes to search for physics beyond the Standard Model. A selection of recent results based upon $3.0\ \mathrm{fb}^{-1}$ of LHCb data are presented. These are the first measurement of the $CP$ violating phase $ϕ_{s}$ using $B_{s}^{0}\to J/ψK^{+}K^{-}$ in the mass region above the $ϕ(1020)$ resonance and $B_{s}^{0}\to ψ(2S) ϕ$ decays, the determination of $B_{s}^{0}$ lifetime using $B_{s}^{0}\to D^{(*)-}μ^{+}ν_μ$ decays, the updated measurements of the CKM angle $γ$ with $B^{\pm}\to D K^{*\pm}$ and $B_{s}^{0} \to D_{s}^{\mp}K^{\pm}$ decay modes and the CP violation searches in $\varLambda^{0}_{b}\to pπ^{-}π^{+}π^{-}$ and $\varLambda^{0}_{b}\to pK^{-}μ^{+}μ^{-}$ decays.