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http://hdl.handle.net/2445/131450
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DC Field | Value | Language |
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dc.contributor.author | Garra Ticó, Jordi | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-04-04T13:55:46Z | - |
dc.date.available | 2019-04-04T13:55:46Z | - |
dc.date.issued | 2007-09-04 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131450 | - |
dc.description.abstract | We determine the relative branching fractions of semileptonic B decays to charmed final states. The measurement is performed on the recoil from a fully reconstructed B meson in a sample of 362 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 S ) resonance with the BABAR detector. A simultaneous fit to a set of discriminating variables is performed on a sample of ¯¯¯ B → D X ℓ − ¯ ν ℓ decays to determine the contributions from the different channels. We measure Γ ( B − → D ℓ − ¯ ν ℓ ) / Γ ( B − → D X ℓ − ¯ ν ℓ ) = 0.227 ± 0.014 ± 0.016 , Γ ( B − → D ∗ ℓ − ¯ ν ℓ ) / Γ ( B − → D X ℓ − ¯ ν ℓ ) = 0.582 ± 0.018 ± 0.030 , and Γ ( B − → D ** ℓ − ¯ ν ℓ ) / Γ ( B − → D X ℓ − ¯ ν ℓ ) = 0.191 ± 0.013 ± 0.019 for the charged B sample, and Γ ( ¯¯¯¯¯ B 0 → D ℓ − ¯ ν ℓ ) / Γ ( ¯¯¯¯¯ B 0 → D X ℓ − ¯ ν ℓ ) = 0.215 ± 0.016 ± 0.013 , Γ ( ¯¯¯¯¯ B 0 → D ∗ ℓ − ¯ ν ℓ ) / Γ ( ¯¯¯¯¯ B 0 → D X ℓ − ¯ ν ℓ ) = 0.537 ± 0.031 ± 0.036 , and Γ ( ¯¯¯¯¯ B 0 → D ** ℓ − ¯ ν ℓ ) / Γ ( ¯¯¯¯¯ B 0 → D X ℓ − ¯ ν ℓ ) = 0.248 ± 0.032 ± 0.030 for the neutral B sample, where uncertainties are statistical and systematic, respectively. | - |
dc.format.extent | 8 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.76.051101 | - |
dc.relation.ispartof | Physical Review D, 2007, vol. 76, num. 5, p. 051101(R) | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.76.051101 | - |
dc.rights | (c) American Physical Society, 2007 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.classification | Mesons (Física nuclear) | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.subject.other | Mesons (Nuclear physics) | - |
dc.title | Measurement of the relative branching fractions of ¯¯¯B→D/D∗/D**l−¯νl decays in events with a fully reconstructed B meson | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 558200 | - |
dc.date.updated | 2019-04-04T13:55:46Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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558200.pdf | 212.04 kB | Adobe PDF | View/Open |
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