# Study of Resonances in Exclusive B Decays to $\bar{D}^{(*)}D^{(*)}K$

Abstract : We present a study of resonances in exclusive decays of $B$ mesons to $\bar{D}^{(*)} D^{(*)} K$. We report the observation of the decays $B \to \Dbar^{(*)} D^+_{s1}(2536)$ where the $D^+_{s1}(2536)$ is reconstructed in the $D^{*0}K^+$ and $D^{*+} K^0_S$ decay channels. We report also the observation of the decays $B \to \psi(3770) K$ where the $\psi(3770)$ decays to $\Dbar^0 D^0$ and $D^- D^+$. In addition, we present the observation of an enhancement for the $\Dbar^{*0} D^0$ invariant mass in the decays $B \to \Dbar^{*0} D^0 K$, at a mass of $(3875.1 {}^{+0.7}_{-0.5} \pm 0.5)$ MeV/$c^2$ with a width of $(3.0 {}^{+1.9}_{-1.4} \pm 0.9)$ MeV (the first errors are statistical and the second are systematic). Branching fractions and spin studies are shown for the three resonances. The results are based on 347 fb$^{-1}$ of data collected with the BaBar detector at the PEP-II $B$ factory.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00169752
Contributor : Claudine Bombar <>
Submitted on : Tuesday, September 4, 2007 - 5:11:35 PM
Last modification on : Wednesday, September 16, 2020 - 4:23:12 PM

### Citation

B. Aubert, M. Bona, D. Boutigny, Y. Karyotakis, J.P. Lees, et al.. Study of Resonances in Exclusive B Decays to $\bar{D}^{(*)}D^{(*)}K$. Physical Review D, American Physical Society, 2008, 77, pp.011102. ⟨10.1103/PhysRevD.77.011102⟩. ⟨in2p3-00169752⟩

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