Study of inclusive D_S^((*)+/-) production in B decays and measurement of B^0 --> D^(*-)D_S^((*)+) decays using a partial reconstruction technique

Details Study of inclusive D_S^((*)+/-) production in B decays and measurement of B^0 --> D^(*-)D_S^((*)+) decays using a partial reconstruction technique Study of inclusive D_S^((*)+/-) production in B decays and measurement of B^0 --> D^(*-)D_S^((*)+) decays using a partial reconstruction technique

2000-08-23

arxiv.org/abs/hep-ex/0008056v1

Physics

High Energy Physics

High Energy Physics - Experiment

21 pages, 13 postscript figures, contributed paper to ICHEP2000

Scientific paper

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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