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http://hdl.handle.net/2445/131580
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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 | 2019-04-05T11:10:35Z | - |
dc.date.available | 2019-04-05T11:10:35Z | - |
dc.date.issued | 2009-12-09 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131580 | - |
dc.description.abstract | We present updated measurements of the branching fractions for B 0 meson decays to η K 0 , η η , η ϕ , η ω , η ′ K 0 , η ′ η ′ , η ′ ϕ , and η ′ ω , and branching fractions and C P -violating charge asymmetries for B + decays to η π + , η K + , η ′ π + , and η ′ K + . The data represent the full data set of 467 × 10 6 B ¯¯¯ B pairs collected with the BABAR detector at the PEP-II asymmetric-energy e + e − collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B 0 → η ′ K 0 , we find evidence for three B 0 decay modes at greater than 3.0 σ significance. We find B ( B 0 → η K 0 ) = ( 1.15 + 0.43 − 0.38 ± 0.09 ) × 10 − 6 , B ( B 0 → η ω ) = ( 0.94 + 0.35 − 0.30 ± 0.09 ) × 10 − 6 , and B ( B 0 → η ′ ω ) = ( 1.01 + 0.46 − 0.38 ± 0.09 ) × 10 − 6 , where the first (second) uncertainty is statistical (systematic). For the B + → η K + decay mode, we measure the charge asymmetry A ch ( B + → η K + ) = − 0.36 ± 0.11 ± 0.03 . | - |
dc.format.extent | 11 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.80.112002 | - |
dc.relation.ispartof | Physical Review D, 2009, vol. 80, num. 11, p. 112002 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.80.112002 | - |
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 | B meson decays to charmless meson pairs containing η or η'mesons | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577726 | - |
dc.date.updated | 2019-04-05T11:10:35Z | - |
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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577726.pdf | 313.71 kB | Adobe PDF | View/Open |
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