BELLE2-CONF-PH-2021-008, arXiv:2104.03628 BELLE2-CONF-PH-2021-008

Study of B→D(∗)h decays using 62.8 fb−1 of Belle II data

C.La Licata ; J.Libby ; M.Nayak ; N.Rout ; K.Trabelsi ; E.Waheed ; Y.Zhang

17 March 2021

Abstract: We report measurements related to hadronic $B$ decays to final states that contain charm mesons. The analyses are performed on an $62.8~\mathrm{fb}^{-1}$ data set collected by the Belle II experiment at a center-of-mass energy corresponding to the mass of the $\Upsilon(4S)$ resonance. The measurements reported are for the decay modes $B^-\to D^0 h^-$, $B^{-}\to D^{*0}h^-$, $\bar{B}^{0}\to D^{+} h^{-}$ and $\bar{B}^{0}\to D^{*+} h^{-}$, where $h=\pi$ or $K$. These modes are either signal or control channels for measurements related to the unitarity triangle angle $\gamma$ in direct or time-dependent $CP$-violation measurements. The reported observables are the ratios between the $B\to D^{(*)}K$ and $B\to D^{(*)}\pi$ decay rates, which are found to be in agreement with previous measurements.

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