Determination of $|V_{ub}|$ from simultaneous measurements of untagged $B^0\to {\pi }^{-}{\ell }^{+}{\nu }_{\ell }$ and $B^{+}\to {\rho }^0{\ell }^{+}{\nu }_{\ell }$ decays

Belle II Collaboration, I. Adachi, L. Aggarwal +417

We present a measurement of $|V_{ub}|$ from a simultaneous study of the charmless semileptonic decays $B^0\to {\pi }^{-}{\ell }^{+}{\nu }_{\ell }$ and $B^{+}\to {\rho }^0{\ell }^{+}{\nu }_{\ell }$, where $\ell = e, μ…