Measurement of the time-integrated CP asymmetry in $D^{0}\rightarrow
K^{0}_{S}K^{0}_{S}$ decays using Belle and Belle II data
Measurement of the time-integrated CP asymmetry in $D^{0}\rightarrow
K^{0}_{S}K^{0}_{S}$ decays using Belle and Belle II data
We measure the time-integrated CP asymmetry in $D^{0} \rightarrow K^{0}_{S}K^{0}_{S}$ decays reconstructed in $e^{+}e^{-} \rightarrow c\overline{c}$ events collected by the Belle and Belle II experiments. The corresponding data samples have integrated luminosities of 980 fb$^{-1}$ and 428 fb$^{-1}$, respectively. The $D^{0}$ decays are required to originate from the $D^{*+} \rightarrow …