Search for $CP$ violation in $D_{(s)}^{+}\to K_S^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}$ decays using triple and quadruple products

Belle, Belle II Collaborations, : +366

We perform the first search for $CP$ violation in $D_{(s)}^{+}\to K_S^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}$ decays. We use a combined data set from the Belle and Belle II experiments, which…