Measurement of decay-time dependent $CP$ violation in $B^0\to K_S^0{K}_S^0{K}_S^0$ using 2019--2021 Belle II data

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

We report a measurement of decay-time dependent $CP$-violating parameters in $B^0\to K_S^0{K}_S^0{K}_S^0$ decays. We use $(198.0\pm 3.0)\times 10^{6}B\overline{B}$ pairs c…