Search for CP violation in B ± → J / ψK ± and B ± → ψ ( 2 S ) K ±
نویسندگان
چکیده
We present a search for direct CP violation in B → J/ψ K and B → ψ(2S)K decays. In a sample of 9.7 × 106 BB meson pairs collected with the CLEO detector, we have fully reconstructed 534 B → J/ψK and 120 B → ψ(2S)K decays with very low background. We have measured the CP -violating charge asymmetry to be (+1.8 ± 4.3[stat] ± 0.4[syst])% for B → J/ψ K and (+2.0 ± 9.1[stat]± 1.0[syst])% for B → ψ(2S)K.
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