Abstract
We present a search for direct CP violation in B±→J/ψK± and B±→ψ(2S)K± decays. In a sample of 9.7×106BB¯ meson pairs collected with the CLEO detector, we have fully reconstructed 534B±→J/ψK± and 120B±→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/ψK± and [+2.0±9.1(stat)±1.0(syst)]% for B±→ψ(2S)K±.Received 2 March 2000DOI:https://doi.org/10.1103/PhysRevLett.84.5940©2000 American Physical Society
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