Search for CP violation in B+- -> J/psi K+- and B+- -> psi(2S) K+- decays

Details Search for CP violation in B+- -> J/psi K+- and B+- -> psi(2S) K+- decays Search for CP violation in B+- -> J/psi K+- and B+- -> psi(2S) K+- decays

2000-03-02

arxiv.org/abs/hep-ex/0003004v2

Phys.Rev.Lett.84:5940,2000

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 2 figures; minor corrections addressing suggestions from referees; to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.84.5940

We present a search for direct CP violation in B+- -> J/psi K+- and B+- -> psi(2S) K+- decays. In a sample of 9.7 million B meson pairs collected with the CLEO detector, we have fully reconstructed 534 B+- -> J/psi K+- and 120 B+- -> psi(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/psi K+- and (+2.0+-9.1[stat]+-1.0[syst])% for B+- -> psi(2S) K+-.

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