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http://hdl.handle.net/2445/138446
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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 | 2019-07-26T12:58:28Z | - |
dc.date.available | 2019-07-26T12:58:28Z | - |
dc.date.issued | 2008-02-25 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/138446 | - |
dc.description.abstract | We report the observation of the b → d penguin-dominated decay B 0 → K * 0 ¯¯¯¯ K * 0 with a sample of 383.2 ± 4.2 million B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II asymmetric-energy e + e − collider at the Stanford Linear Accelerator Center. The measured branching fraction is B ( B 0 → K * 0 ¯¯¯¯ K * 0 ) = [ 1.28 + 0.35 − 0.30 ± 0.11 ] × 10 − 6 and the fraction of longitudinal polarization is f L ( B 0 → K * 0 ¯¯¯¯ K * 0 ) = 0.80 + 0.10 − 0.12 ± 0.06 . The first error quoted is statistical and the second systematic. We also obtain an upper limit at the 90% confidence level on the branching fraction for B ( B 0 → K * 0 K * 0 ) < 0.41 × 10 − 6 . | - |
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.100.081801 | - |
dc.relation.ispartof | Physical Review Letters, 2008, vol. 100, num. 8, p. 081801 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.100.081801 | - |
dc.rights | (c) American Physical Society, 2008 | - |
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 B0→K*0¯¯¯¯K*0 and Search for B0→K*0K*0 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577712 | - |
dc.date.updated | 2019-07-26T12:58:29Z | - |
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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577712.pdf | 232.62 kB | Adobe PDF | View/Open |
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