Study of CP violation in B0 → DK⋆(892)0 decays with D → Kπ(ππ), ππ(ππ), and KK final states

A bstract A measurement of CP -violating observables associated with the interference of B 0 → D 0 K ⋆ (892) 0 and B⁰→ D̄⁰K(892)⁰ B 0 → D ¯ 0 K ⋆ 892 0 decay amplitudes is performed in the D 0 → K ∓ π ± ( π + π − ), D 0 → π + π − ( π + π − ), and D 0 → K + K − final states using data collected by the LHCb experiment corresponding to an integrated luminosity of 9 fb − 1 . CP -violating observables related to the interference of Bₛ⁰→ D⁰K̄(892)⁰ B s 0 → D 0 K ¯ ⋆ 892 0 and Bₛ⁰→ D̄⁰K̄(892)⁰ B s 0 → D ¯ 0 K ¯ ⋆ 892 0 are also measured, but no evidence for interference is found. The B 0 observables are used to constrain the parameter space of the CKM angle γ and the hadronic parameters rB⁰DK r B 0 DK ⋆ and δB⁰DK δ B 0 DK ⋆ with inputs from other measurements. In a combined analysis, these measurements allow for four solutions in the parameter space, only one of which is consistent with the world average.