Semileptonic B decay results from early Belle II data

The Belle II experiment at the SuperKEKB energy-asymmetric $e^{+}{e}^{-}$ collider is a substantial upgrade of the B factory facility, Belle, at the Japanese KEK laboratory. The main operation of SuperKEKB has started in March 2019, and collisions ran until July 2019, achieving a peak luminosity of $5.5\times 10^{33}$cm$^{-2}$s$^{-1}$. The results presented here were obtained from a subset of collected data of 0.41 fb${}^{-1}$. In the poster presented at the conference the first results from studying semileptonic $\mathit{\text{B}}$-meson decays were shown. The performance of the Full Event Interpretation (FEI) tagging was analysed. The $B^0\to D^{\ast -}{\mathrm{\ell }}^{+}{\nu }_{\mathrm{\ell }}$ mode was rediscovered, using the untagged approach.