# Study of inclusive $D_S^{(*)+/-}$ production in B decays and measurement of $B^0 \to D^{*-}D_S^{(*)+}$ decays using a partial reconstruction technique

Abstract : Electron-positron annihilation data collected by the BABAR detector near the Y(4S) resonance are used to study the inclusive decay of B mesons to D_S^(+/-) and D_S^(*+/-) mesons, where the D_S^(+/-) is reconstructed using the decay D_S^(+/-) --> phi pi^(+/-). The production fraction of inclusive D_S^((*)+/-) and the corresponding momentum spectra have been determined. The exclusive decays B^0 --> D^(*-)D_S^((*)+) are observed with a partial reconstruction technique which uses the soft pion from the D^(*+/-) decay in association with the reconstructed D_S^((*)+/-). The beam energy constraint is used to determine the missing mass recoiling against the D_S^(+/-) system, showing a clear signal for this process. From the observed rates, preliminary results for the corresponding branching fractions have been obtained.
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Conference papers

http://hal.in2p3.fr/in2p3-00006095
Contributor : Claudine Bombar <>
Submitted on : Tuesday, September 19, 2000 - 3:42:11 PM
Last modification on : Saturday, December 19, 2020 - 11:32:02 AM

### Citation

B. Aubert, A. Boucham, D. Boutigny, I. de Bonis, J. Favier, et al.. Study of inclusive $D_S^{(*)+/-}$ production in B decays and measurement of $B^0 \to D^{*-}D_S^{(*)+}$ decays using a partial reconstruction technique. International Conference on High-Energy Physics 30 ICHEP 2000, Jul 2000, Osaka, Japan. pp.1-21. ⟨in2p3-00006095⟩

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