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https://hdl.handle.net/2445/138270
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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 | 2019-07-25T13:24:19Z | - |
dc.date.available | 2019-07-25T13:24:19Z | - |
dc.date.issued | 2009-08-18 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | https://hdl.handle.net/2445/138270 | - |
dc.description.abstract | We search for evidence of a light scalar boson in the radiative decays of the Υ ( 2 S ) and Υ ( 3 S ) resonances: Υ ( 2 S , 3 S ) → γ A 0 , A 0 → μ + μ − . Such a particle appears in extensions of the standard model, where a light C P -odd Higgs boson naturally couples strongly to b quarks. We find no evidence for such processes in the mass range 0.212 ≤ m A 0 ≤ 9.3 GeV in the samples of 99 × 10 6 Υ ( 2 S ) and 122 × 10 6 Υ ( 3 S ) decays collected by the BABAR detector at the SLAC PEP-II B factory and set stringent upper limits on the effective coupling of the b quark to the A 0 . We also limit the dimuon branching fraction of the η b meson: B ( η b → μ + μ − ) < 0.9 % at 90% confidence level. | - |
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.103.081803 | - |
dc.relation.ispartof | Physical Review Letters, 2009, vol. 103, num. 8, p. 081803 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.103.081803 | - |
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 | Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Υ→γA0 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 577741 | - |
dc.date.updated | 2019-07-25T13:24:20Z | - |
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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577741.pdf | 253.66 kB | Adobe PDF | View/Open |
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