000003234 001__ 3234
000003234 005__ 20220930074458.0
000003234 037__ $$aBELLE2-CONF-PROC-2022-015
000003234 041__ $$aeng
000003234 100__ $$aDaniel Dorner
000003234 245__ $$aSemileptonic and rare decays at Belle II
000003234 260__ $$a$$c2022-09-19
000003234 300__ $$amult. p
000003234 520__ $$aThe Belle II collaboration presents their first measurements of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix elements $|V_{cb}|$ and $|V_{ub}|$, as well as their first branching fraction measurement of $B\rightarrow K^*\ell^+\ell^-$ based on up to 189.26 fb$^{-1}$ of data collected at the $\Upsilon(4S)$ resonance. In all presented analyses the hadronic tag from Belle II's full event interpretation was used. $|V_{cb}|$ was measured using $B^0\rightarrow D^{*-}\ell^+\nu_\ell$ by performing a fit to its w distribution. In addition, the results of an inclusive $|V_{cb}|$ fit based on measurements of $q^2$ moments from Belle II and Belle is presented. $|V_{ub}|$ was obtained using a fit to the $q^2$ distribution of $B^+ \rightarrow \pi^0e^+\nu_{e}$ and $B^0 \rightarrow \pi^-e^+\nu_{e}$.
000003234 8560_ $$fdaniel.dorner@oeaw.ac.at
000003234 8564_ $$uhttps://docs.belle2.org/record/3234/files/BELLE2-CONF-PROC-2022-015.pdf