Measurement of $y_{CP}$ in $D^0$ meson decays to the $K_S^0{K}^{+}{K}^{-}$ final state

The Belle Collaboration

We present a measurement of the $D^0$-$\overline{D}{}^0$ mixing parameter $y_{CP}$ using a flavor-untagged sample of $D^0\to K_S^0{K}^{+}{K}^{-}$ decays. The measurement is based on a 673…