Measurement of the branching fraction for the decay $B\to K^{\ast }(892){\ell }^{+}{\ell }^{-}$ at Belle II

Belle II Collaboration, F. Abudinén, I. Adachi +590

We report a measurement of the branching fraction of $B\to K^{\ast }(892){\ell }^{+}{\ell }^{-}$ decays, where ${\ell }^{+}{\ell }^{-}={\mu }^{+}{\mu }^{-}$ or $e^{+}{e}^{-}$, using electron-positron collisions recorde…