Investigation of B --> D^{(*)}anti-D^{(*)}K decays with the BABAR detector

Details Investigation of B --> D^{(*)}anti-D^{(*)}K decays with the BABAR detector Investigation of B --> D^{(*)}anti-D^{(*)}K decays with the BABAR detector

2001-07-22

arxiv.org/abs/hep-ex/0107056v2

Physics

High Energy Physics

High Energy Physics - Experiment

18 pages, 8 figures (15 postscript files), conference paper submitted to LP01

Scientific paper

Using about 23M $B \bar B$ events collected in 1999-2000 with the BABAR detector, we report the observation of several hundred $B \to D^{(*)}\bar D^{(*)}K$ decays with two completely reconstructed D mesons. The preliminary branching fractions of the low background decay modes $B^0\to D^{*-}D^{(*)0}K^+$ are determined to be ${\cal B}(B^0 \to D^{*-}D^{0}K^+) = (2.8 \pm 0.7 \pm 0.5)\times 10^{-3}$ and ${\cal B}(B^0 \to D^{*-}D^{*0}K^+) = (6.8 \pm 1.7 \pm 1.7)\times 10^{-3}$. Observation of a significant number of candidates in the color-suppressed decay mode $B^+\to D^{*+}D^{*-}K^+$ is reported with a preliminary branching fraction ${\cal B}(B^+\to D^{*+}D^{*-}K^+)= (3.4\pm 1.6\pm 0.9)\times 10^{-3}.$

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