Measurement of CP observables in $B^{\pm} \to DK^{*\pm}$ decays using two- and four-body D final states

Abstract

Measurements of CP observables in $B^{\pm} \to DK^{*\pm}$ decays are presented, where D denotes a superposition of $D^0$ and $\overline{D}^0$ meson states. Decays of the D meson to $K^- \pi^+, K^- K^+, \pi^- \pi^+, K^- \pi^+ \pi^- \pi^+$ and $\pi^- \pi^+ \pi^- \pi^+$ are used and the $K^{*\pm}$ meson is reconstructed in the $K_S^0\pi^{\pm}$ final state. This analysis uses a data sample of pp collisions collected with the LHCb experiment, corresponding to integrated luminosities of 1 fb$^{−1}$, 2 fb$^{−1}$ and 1.8 fb$^{−1}$ at centre-of-mass energies $\sqrt{s}$=7 TeV, 8 TeV and 13 TeV, respectively. The sensitivity of the results to the CKM angle $γ$ is discussed.