Study of exclusive two-body B0 meson decays to charmonium

CLEO Collaboration, G. D. Gollin, M. Selen, J. J. Thaler

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We present a study of three B0 decay modes useful for time-dependent CP asymmetry measurements. From a sample of 9.7×106 BB̄ meson pairs collected with the CLEO detector, we have reconstructed B0 →J/ψKS0, B0→χclKS0, and B0→J/ψπ0 decays. The latter two decay modes have been observed for the first time. We describe a KS0→π0π0 detection technique and its application to the reconstruction of the decay B0 →J/ψKS0. Combining the results obtained using KS0→π+π- and KS0→π0π0 decays, we determine B(B0 →J/ψK0)=(9.5±0.8±0.6)×10-4, where the first uncertainty is statistical and the second one is systematic. We also obtain B(B0→χclK0)=(3.9-1.3 +1.9±0.4)×10-4 and B(B0→J/ψπ0)=(2.5-0.9 +1.1±0.2)×10-5.

Original languageEnglish (US)
Article number051101
Pages (from-to)1-5
Number of pages5
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number5
StatePublished - Sep 1 2000

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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