ausblenden:
Schlagwörter:
B Physics, CKM Angle Gamma, CP Violation, Hadron-Hadron Scattering
MPINP:
LHCb - Abteilung Hinton
Zusammenfassung:
A measurement of CP -violating observables in B± → D∗K± and B± → D∗π± decays is made where the photon or neutral pion from the D∗ → Dγ or D∗ → Dπ0 decay is not reconstructed. The D meson is reconstructed in the self-conjugate decay modes, D → KS0 π+π− or D → KS0 K+K−. The distribution of signal yields in the D decay phase space is analysed in a model-independent way. The measurement uses a data sample collected in proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of approximately 9 fb−1. The B± → D∗K± and B± → D∗π± CP -violating observables are interpreted in terms of hadronic parameters and the CKM angle γ, resulting in a measurement of γ = (92−17+21)◦. The total uncertainty includes the statistical and systematic uncertainties, and the uncertainty due to external strong-phase inputs.