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http://hdl.handle.net/2445/131400
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DC Field | Value | Language |
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dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-04-04T12:37:07Z | - |
dc.date.available | 2019-04-04T12:37:07Z | - |
dc.date.issued | 2006-07-05 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131400 | - |
dc.description.abstract | We report on a study of the decay ¯¯¯ B 0 → D * + ω π − with the BABAR detector at the PEP-II B -factory at the Stanford Linear Accelerator Center. Based on a sample of 232 × 10 6 B ¯¯¯ B decays, we measure the branching fraction B ( ¯¯¯ B 0 → D * + ω π − ) = ( 2.88 ± 0.21 ( stat . ) ± 0.31 ( syst . ) ) × 10 − 3 . We study the invariant mass spectrum of the ω π − system in this decay. This spectrum is in good agreement with expectations based on factorization and the measured spectrum in τ − → ω π − ν τ . We also measure the polarization of the D * + as a function of the ω π − mass. In the mass region 1.1 to 1.9 GeV we measure the fraction of longitudinal polarization of the D * + to be Γ L / Γ = 0.654 ± 0.042 ( stat . ) ± 0.016 ( syst . ) . This is in agreement with the expectations from heavy-quark effective theory and factorization assuming that the decay proceeds as ¯¯¯ B 0 → D * + ρ ( 1450 ) − , ρ ( 1450 ) − → ω π − . | - |
dc.format.extent | 12 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.74.012001 | - |
dc.relation.ispartof | Physical Review D, 2006, vol. 74, num. 1, p. 012001 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.74.012001 | - |
dc.rights | (c) American Physical Society, 2006 | - |
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 | Study of the decay ¯B0 → D*+ωπ− | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 550059 | - |
dc.date.updated | 2019-04-04T12:37:07Z | - |
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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550059.pdf | 476.47 kB | Adobe PDF | View/Open |
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