000003574 001__ 3574
000003574 005__ 20230515125336.0
000003574 037__ $$aBELLE2-CONF-PROC-2023-014
000003574 041__ $$aeng
000003574 100__ $$aHenrik Junkerkalefeld
000003574 245__ $$aSemileptonic $B$-meson decays including $b \rightarrow c$ anomalies at Belle II
000003574 260__ $$a$$c2023-05-15
000003574 300__ $$a4
000003574 520__ $$aWe present recent measurements of semileptonic $B$-meson decays using a data sample collected at the $\Upsilon(4S)$ resonance by the Belle~II experiment corresponding to an integrated luminosity of $189\,\mathrm{fb}^{-1}$. We determine the CKM-matrix elements $V_\mathrm{cb}$ using untagged $B^0 \to D^{*-} \, \ell^{+} \, \nu_\ell$ decays and $V_\mathrm{ub}$ using untagged $B^0 \to \pi^- \, \ell^+ \, \nu_\ell$ decays. We test light lepton universality in two new analyses using hadronically tagged events. We report the first measurement of a complete set of five different angular distributions using $B^0 \to D^{*-} \, \ell^{+} \, \nu_\ell$ decays and we measure the branching fraction ratio of inclusive $B \to X \, e \, \bar{\nu}_e$ and $B \to X \, \mu \, \bar{\nu}_\mu$ decays.
000003574 8560_ $$fjunkerkalefeld@physik.uni-bonn.de
000003574 8564_ $$uhttps://docs.belle2.org/record/3574/files/BELLE2-CONF-PROC-2023-014.pdf