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Measurements of time-dependent CP violation in $B^0 \to ωK_S^0$, $f_0(980) K_S^0$, $K_S^0 π^0$ and $K^+ K^- K_S^0$ decays

Belle Collaboration
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Abstract

We present measurements of time-dependent CP asymmetries in $B^0 \to ωK_S^0$, $f_0 (980) K_S^0$, $K_S^0 π^0$ and $K^+ K^- K_S^0$ based on a sample of 535 $\times 10^6$ $B\bar{B}$ pairs collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB energy-asymmetric $e^+ e^-$ collider. One neutral $B$ meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying $B$ meson is identified from its decay products. CP-violation parameters for each of the decay modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays.

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Belle Collaboration. 2006-09-06. Measurements of time-dependent CP violation in $B^0 \to ωK_S^0$, $f_0(980) K_S^0$, $K_S^0 π^0$ and $K^+ K^- K_S^0$ decays. https://doi.org/10.1103/physrevd.76.091103

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