Measurement of the semileptonic ${\bar{B}}^0\to D^{\ast +}{\ell }^{-}{\nu }_{\ell }$ branching fraction with fully reconstructed $B$ meson decays and 34.6 fb${}^{-1}$of Belle II data

Belle II Collaboration, F. Abudinen, I. Adachi +540

We present a first measurement of the $\overline{B^0}\to D^{\ast +}{\ell }^{-}{\nu }_{\ell }$ branching fraction using fully reconstructed $B$ meson decays employing the Full Event Inte…