Measurement of time-dependent CP violation parameters in $B^0\to K_0^S{K}_0^S{K}_0^S$ decays at Belle

Abstract

We measure the time-dependent $CP$ violation parameters in $B^0\to K_S^0{K}_S^0{K}_S^0$ decays using $772\times 10^6$ $B\overline{B}$ pairs collected at the $\hat{I}\yen (4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider. The obtained mixing-induced and direct $CP$ asymmetries are $-0.71\pm 0.23(\mathrm{stat})\pm 0.05(\mathrm{syst})$ and $0.12\pm 0.16(\mathrm{stat})\pm 0.05(\mathrm{syst})$, respectively. These values are consistent with the Standard Model predictions. The significance of $CP$ violation differs from zero by 2.5 standard deviations.

To be submitted to Physical Review D (RC)