Title

Study of exclusive two-body B0 meson decays to charmonium

Document Type

Article

Publication Date

9-1-2000

Abstract

We present a study of three B decay modes useful for time-dependent CP asymmetry measurements. From a sample of 9.7×10 BB̄ meson pairs collected with the CLEO detector, we have reconstructed B →J/ψK , B →χ K , and B →J/ψπ decays. The latter two decay modes have been observed for the first time. We describe a K →π π detection technique and its application to the reconstruction of the decay B →J/ψK . Combining the results obtained using K →π π and K →π π decays, we determine B(B →J/ψK )=(9.5±0.8±0.6)×10 , where the first uncertainty is statistical and the second one is systematic. We also obtain B(B →χ K )=(3.9 ±0.4)×10 and B(B →J/ψπ )=(2.5 ±0.2)×10 . ©2000 The American Physical Society. 0 6 0 0 0 0 0 0 0 0 0 0 0 0 + - 0 0 0 0 0 -4 0 0 +1.9 -4 0 0 +1.1 -5 S cl S S S S S cl -1.3 -0.9

Publication Name

Physical Review D - Particles, Fields, Gravitation and Cosmology

Volume Number

62

First Page

1

Last Page

5

Issue Number

5

Article

051101

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