We present measurements of the time-dependent CP-violation parameters S and C in B0→η′K0 decays. The data sample corresponds to 384×10^6 BB̅ pairs produced by e+e- annihilation at the Υ(4S). The results are S=0.58±0.10±0.03 and C=-0.16±0.07±0.03. We observe mixing-induced CP violation with a significance of 5.5 standard deviations in this b→s penguin dominated mode.
Observation of CP Violation in B→η′K0 Decays
SIMI, GABRIELE;GAZ A;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2007
Abstract
We present measurements of the time-dependent CP-violation parameters S and C in B0→η′K0 decays. The data sample corresponds to 384×10^6 BB̅ pairs produced by e+e- annihilation at the Υ(4S). The results are S=0.58±0.10±0.03 and C=-0.16±0.07±0.03. We observe mixing-induced CP violation with a significance of 5.5 standard deviations in this b→s penguin dominated mode.
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