Measurement of the Branching Fraction for B+- --> chi_c0 K+-

Details Measurement of the Branching Fraction for B+- --> chi_c0 K+- Measurement of the Branching Fraction for B+- --> chi_c0 K+-

2003-10-08

arxiv.org/abs/hep-ex/0310015v1

Phys.Rev.D69:071103,2004

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 2 figures, submitted to Phys. Rev. D (Rapid Communications)

Scientific paper

10.1103/PhysRevD.69.071103

We present a measurement of the branching fraction of the decay B+- --> chi_c0 K+- from a sample of 89 million BB pairs collected by the BaBar detector at the PEP-II asymmetric-energy B Factory at SLAC. The chi_c0 meson is reconstructed through its two-body decays to pi+ pi- and K+ K-. We measure BR(B+- --> chi_c0 K+-)* BR(chi_c0 --> pi+ pi-) = (1.32^{+0.28}_{-0.27}(stat) +- 0.09(syst))*10^-6 and BR(B+- --> chi_c0 K+-) * BR(chi_c0 --> K+ K-) = (1.49^{+0.36}_{-0.34}(stat) +- 0.11(syst))* 10^-6. Using the known values for the chi_c0 decays branching fractions, we combine these results to obtain BR(B+- --> chi_c0 K+-) = (2.7+-0.7)* 10^-4.

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