Observation of $\bar{B^0}$ -> DsJ*(2317)+ K- decay

Details Observation of $\bar{B^0}$ -> DsJ*(2317)+ K- decay Observation of $\bar{B^0}$ -> DsJ*(2317)+ K- decay

2004-09-07

arxiv.org/abs/hep-ex/0409026v3

Phys.Rev.Lett.94:061802,2005

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 2 figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.94.061802

The decays $\bar{B^0} \to D_{sJ}^+ K^-$ and $\bar{B^0} \to D_{sJ}^- \pi^+$ are studied for the first time. A significant signal is observed in the $\bar{B^0} \to D_{sJ}^*(2317)^+ K^-$ decay channel with ${\cal B}(\bar{B^0} \to D_{sJ}^*(2317)^+ K^-) \times {\cal B} (D_{sJ}^*(2317)^+ \to D_s^+ \pi^0) = (5.3^{+1.5}_{-1.3} \pm 0.7 \pm 1.4) \times 10^{-5}$. No signals are observed in the $\bar{B^0} \to D_{sJ}^*(2317)^- \pi^+$, $\bar{B^0} \to D_{sJ}(2460)^+ K^-$ and $\bar{B^0} \to D_{sJ}(2460)^- \pi^+$ decay modes, and upper limits are obtained. The analysis is based on a dataset of 140 fb$^{-1}$ collected by the Belle experiment at the asymmetric $e^+ e^-$ collider KEKB.

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