Determination of $|V_{ub}|$ from untagged $B^0\to {\pi }^{-}{\ell }^{+}{\nu }_{\ell }$ decays using 2019-2021 Belle II data

Belle II Collaboration, K. Adamczyk, L. Aggarwal +588

We present an analysis of the charmless semileptonic decay $B^0\to {\pi }^{-}{\ell }^{+}{\nu }_{\ell }$, where $\ell =e,\mu$, from 198.0 million pairs of $B\bar{B}$ mesons recorded by the Belle II…