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http://hdl.handle.net/2445/135257
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DC Field | Value | Language |
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dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Garra Ticó, Jordi | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-06-18T09:07:35Z | - |
dc.date.available | 2019-06-18T09:07:35Z | - |
dc.date.issued | 2011-07-22 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/135257 | - |
dc.description.abstract | We report the observation of the decay B − → D ( * ) + s K − ℓ − ¯ ν ℓ based on 342 fb − 1 of data collected at the Υ ( 4 S ) resonance with the BABAR detector at the PEP-II e + e − storage rings at SLAC. A simultaneous fit to three D + s decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B − → D ( * ) + s K − ℓ − ¯ ν ℓ with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B ( B − → D ( * ) + s K − ℓ − ¯ ν ℓ ) = [ 6.13 + 1.04 − 1.03 ( stat ) ± 0.43 ( syst ) ± 0.51 ( B ( D s ) ) ] × 10 − 4 , where the last error reflects the limited knowledge of the D s branching fractions. | - |
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/PhysRevLett.107.041804 | - |
dc.relation.ispartof | Physical Review Letters, 2011, vol. 107, num. 4, p. 041804 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.107.041804 | - |
dc.rights | (c) American Physical Society, 2011 | - |
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 | Observation of the Decay B−→D(*)+sK−ℓ−¯νℓ | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 602002 | - |
dc.date.updated | 2019-06-18T09:07:36Z | - |
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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602002.pdf | 185.14 kB | Adobe PDF | View/Open |
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