Observation of B0 -> chi_c0K*0 and evidence for B+ -> chi_c0K*+

Details Observation of B0 -> chi_c0K*0 and evidence for B+ -> chi_c0K*+ Observation of B0 -> chi_c0K*0 and evidence for B+ -> chi_c0K*+

2008-08-11

arxiv.org/abs/0808.1487v2

Phys.Rev.D78:091101,2008

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 2 postscript figures, submitted to ICHEP2008

Scientific paper

10.1103/PhysRevD.78.091101

We present the observation of the decay B0 -> chi_c0K*0 as well as evidence of B+ -> chi_c0K*+, with an 8.9 and a 3.6 standard deviation significance, respectively, using a data sample of 454 million Y(4S) -> BB decays collected with the BaBar detector at the PEP-II B meson factory located at the Stanford Linear Accelerator Center (SLAC). The measured branching fractions are: B(B0 -> chi_c0K*0) = (1.7 +/- 0.3 +/- 0.2) * 10^{-4} and B(B+ -> chi_c0K^*+) = (1.4 +/- 0.5 +/- 0.2) * 10^{-4}, where the first quoted errors are statistical and the second are systematic. We obtain a branching fraction upper limit of B(B+ -> chi_c0K*+) < 2.1 * 10^{-4} at the 90% confidence level.

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