Measurement of B0->Ds(*)+D*- branching fractions and polarization in the decay B0->Ds*+D*- with a partial reconstruction technique

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dc.creatorThe BABAR Collaboration
dc.creatorAubert, B.
dc.date2002-07-25
dc.date.accessioned2026-07-07T03:35:26Z
dc.date.available2026-07-07T03:35:26Z
dc.descriptionWe present measurements of the decays B0->Ds(*)+D*-, using data recorded by the BABAR detector in 1999 and 2000, consisting of 20.8 fb^-1. The analysis is conducted with a partial reconstruction technique, in which only the Ds(*)+ and the soft pion from the D*- decay are reconstructed. From the observed rates, we measure the branching fractions BR(B0->Ds+D*-) = (1.03 +- 0.14 +- 0.13 +- 0.26)% and BR(B0->Ds*+D*-) = (1.97 +- 0.15 +- 0.30 +- 0.49)%, where the first error is statistical, the second is systematic, and the third is the error due to the Ds+->phi pi+ branching fraction uncertainty. From the B0->Ds*+D*- angular distributions, we measure the fraction of longitudinal polarization Gamma_L/Gamma = (51.9 +- 5.0 +- 2.8)%, which is consistent with the theoretical prediction, based on factorization. These results are preliminary.
dc.description22 pages, 10 postscript figues, submitted to ICHEP2002
dc.identifierhttps://arxiv.org/abs/hep-ex/0207079
dc.identifierhttp://arxiv.org/abs/hep-ex/0207079
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/37346
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of B0->Ds(*)+D*- branching fractions and polarization in the decay B0->Ds*+D*- with a partial reconstruction technique
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