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http://hdl.handle.net/2445/135281
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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 | 2019-06-18T09:47:47Z | - |
dc.date.available | 2019-06-18T09:47:47Z | - |
dc.date.issued | 2010-01-05 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/135281 | - |
dc.description.abstract | We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element | V cb | and the form-factor slope ρ 2 in ¯¯¯ B → D ℓ − ¯ ν ℓ decays based on 460 × 10 6 B ¯¯¯ B events recorded at the Υ ( 4 S ) resonance with the BABAR detector. ¯¯¯ B → D ℓ − ¯ ν ℓ decays are selected in events in which a hadronic decay of the second B meson is fully reconstructed. We measure B ( B − → D 0 ℓ − ¯ ν ℓ ) / B ( B − → X ℓ − ¯ ν ℓ ) = ( 0.255 ± 0.009 ± 0.009 ) and B ( ¯¯¯ B 0 → D + ℓ − ¯ ν ℓ ) / B ( ¯¯¯ B 0 → X ℓ − ¯ ν ℓ ) = ( 0.230 ± 0.011 ± 0.011 ) , along with the differential decay distribution in ¯¯¯ B → D ℓ − ¯ ν ℓ decays. We then determine G ( 1 ) | V cb | = ( 42.3 ± 1.9 ± 1.4 ) × 10 − 3 and ρ 2 = 1.20 ± 0.09 ± 0.04 , where G ( 1 ) is the hadronic form factor at the point of zero recoil. | - |
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.104.011802 | - |
dc.relation.ispartof | Physical Review Letters, 2010, vol. 104, num. 1, p. 011802 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.104.011802 | - |
dc.rights | (c) American Physical Society, 2010 | - |
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 |Vcb| and the Form-Factor Slope in ¯¯¯B→Dℓ−¯νℓ Decays in Events Tagged by a Fully Reconstructed B Meson | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 601931 | - |
dc.date.updated | 2019-06-18T09:47:48Z | - |
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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601931.pdf | 244.44 kB | Adobe PDF | View/Open |
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