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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 | 2019-07-25T13:21:21Z | - |
dc.date.available | 2019-07-25T13:21:21Z | - |
dc.date.issued | 2009-07-31 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/138337 | - |
dc.description.abstract | We present a study of B decays into semileptonic final states containing charged and neutral D 1 ( 2420 ) and D ∗ 2 ( 2460 ) . The analysis is based on a data sample of 208 fb − 1 collected at the Υ ( 4 S ) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted from measurements of the mass difference Δ m = m ( D ** ) − m ( D ) distributions. Product branching fractions are determined to be B ( B + → D 0 1 ℓ + ν ℓ ) × B ( D 0 1 → D * + π − ) = ( 2.97 ± 0.17 ± 0.17 ) × 10 − 3 , B ( B + → D * 0 2 ℓ + ν ℓ ) × B ( D * 0 2 → D ( * ) + π − ) = ( 2.29 ± 0.23 ± 0.21 ) × 10 − 3 , B ( B 0 → D − 1 ℓ + ν ℓ ) × B ( D − 1 → D * 0 π − ) = ( 2.78 ± 0.24 ± 0.25 ) × 10 − 3 and B ( B 0 → D * − 2 ℓ + ν ℓ ) × B ( D * − 2 → D ( * ) 0 π − ) = ( 1.77 ± 0.26 ± 0.11 ) × 10 − 3 . In addition we measure the branching ratio Γ ( D ∗ 2 → D π − ) / Γ ( D ∗ 2 → D ( * ) π − ) = 0.62 ± 0.03 ± 0.02 . | - |
dc.format.extent | 7 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/PhysRevLett.103.051803 | - |
dc.relation.ispartof | Physical Review Letters, 2009, vol. 103, num. 5, p. 051803 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.103.051803 | - |
dc.rights | (c) American Physical Society, 2009 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | Measurement of Semileptonic B Decays into Orbitally Excited Charmed Mesons | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577743 | - |
dc.date.updated | 2019-07-25T13:21:21Z | - |
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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577743.pdf | 297.61 kB | Adobe PDF | View/Open |
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