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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. 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Drutskoy, et al. (for the Belle Collaboration)","submitted_at":"2004-09-07T23:45:30Z","abstract_excerpt":"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. 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