Measurement of $CP$ asymmetries in $B^0\to {\eta }^{\prime }{K}_s^0$ decays at Belle II

Belle II Collaboration, I. Adachi, L. Aggarwal +399

We describe a measurement of charge-parity ($CP$) violation asymmetries in $B^0\to {\eta }^{\prime }{K}_S^0$ decays using Belle II data. We consider ${\eta }^{\prime }\to \eta (\to \gamma \gamma ){\pi }^{+}{\pi }^{-}$ and ${\eta }^{\prime }\to \rho (\to {\pi }^{+}{\pi }^{-})\gamma$ de…