Measurement of the branching fractions for B- --> D(*)+ pi- l- nu-bar and B0bar --> D(*)0 pi+ l- nu-bar

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dc.creatorThe Belle Collaboration
dc.creatorLiventsev, D.
dc.creatorMatsumoto, T.
dc.date2005-07-13
dc.date2005-08-17
dc.date.accessioned2026-07-07T11:58:07Z
dc.date.available2026-07-07T11:58:07Z
dc.descriptionWe report on a measurement of the branching fractions for B- --> D(*)+ pi- l- nu-bar and B0bar --> D(*)0 pi+ l- nu-bar with 275 million BBbar events collected at the Upsilon(4S) resonance with the Belle detector at KEKB. Events are tagged by fully reconstructing one of the B mesons in hadronic modes. We obtain Br(B- --> D+ pi- l- nu-bar) = (0.54 +/- 0.07(stat) +/- 0.07(syst) +/- 0.06(BR)) x 10^-2, Br(B- --> D*+ pi- l- nu-bar) = (0.67 +/- 0.11(stat) +/- 0.09(syst) +/- 0.03(BR)) x 10^-2, Br(B0bar --> D0 pi+ l- nu-bar) = (0.33 +/- 0.06(stat) +/- 0.06(syst) +/- 0.03(BR)) x 10^-2, Br(B0bar --> D*0 pi+ l- nu-bar) = (0.65 +/- 0.12(stat) +/- 0.08(syst) +/- 0.05(BR)) x 10^-2, where the third error comes from the error on Bbar --> D(*) l- nu-bar decays. Contributions from B0bar --> D*+ l- nu-bar decays are excluded in the measurement of B0bar --> D0 pi+ l- nu-bar.
dc.description6 pages, 10 figures, submitted to Physical Review D (Rapid Communication), the Lepton-Photon 2005 Conference (Uppsala, Sweden) and the HEP2005 Europhysics Conference (Lisboa, Portugal)
dc.identifierhttps://arxiv.org/abs/hep-ex/0507060
dc.identifierhttp://arxiv.org/abs/hep-ex/0507060
dc.identifierPhys.Rev.D72:051109,2005
dc.identifierdoi:10.1103/PhysRevD.72.051109
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206118
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of the branching fractions for B- --> D(*)+ pi- l- nu-bar and B0bar --> D(*)0 pi+ l- nu-bar
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