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 ${\rm Y}(4S)$ 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.

arXiv commentTo be submitted to Physical Review D (RC)

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Cited by in corpus (1)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021