Measurement of the CKM angle γ in the B ⁰ → D K *0 channel using self-conjugate D → K ⁰S h⁺ h⁻ decays

A model-independent study of $$C\!P$$ C P violation in B ⁰ → D K *0 B 0 → D K ∗ 0 decays is presented using data corresponding to an integrated luminosity of 9 \,fb ⁻¹ \,fb - 1 collected by the LHCb experiment at centre-of-mass energies of √s=7, \, 8 s = 7 , 8 and 13 \,Te-1.00006ptV \,Te V . The CKM angle γ γ is determined by examining the distributions of signal decays in phase-space bins of the self-conjugate D → K ⁰S h⁺ h⁻ D → K S 0 h + h - decays, where h = π , K h = π , K . Observables related to $$C\!P$$ C P violation are measured and the angle γ γ is determined to be γ =(49+ 22₋₁₉)^∘ γ = ( 49 - 19 + 22 ) ∘ . Measurements of the amplitude ratio and strong-phase difference between the favoured and suppressed B ⁰ B 0 decays are also presented.