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http://hdl.handle.net/2445/140439
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DC Field | Value | Language |
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dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-09-18T12:58:29Z | - |
dc.date.available | 2019-09-18T12:58:29Z | - |
dc.date.issued | 2006-09-14 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/140439 | - |
dc.description.abstract | We report the first observation of e + e − annihilation into states of positive C parity, namely, ρ 0 ρ 0 and ϕ ρ 0 . The two states are observed in the π + π − π + π − and K + K − π + π − final states, respectively, in a data sample of 225 fb − 1 collected by the BABAR experiment at the Positron-Electron Project II e + e − storage rings at energies near √ s = 10.58 GeV . The distributions of cos θ ∗ , where θ ∗ is the center-of-mass polar angle of the ϕ meson or the forward ρ 0 meson, suggest production by two-virtual-photon annihilation. We measure cross sections within the range | cos θ ∗ | < 0.8 of σ ( e + e − → ρ 0 ρ 0 ) = 20.7 ± 0.7 ( stat ) ± 2.7 ( syst ) fb and σ ( e + e − → ϕ ρ 0 ) = 5.7 ± 0.5 ( stat ) ± 0.8 ( syst ) fb . | - |
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.97.112002 | - |
dc.relation.ispartof | Physical Review Letters, 2006, vol. 97, num. 11, p. 112002 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.97.112002 | - |
dc.rights | (c) American Physical Society, 2006 | - |
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 e+e− Annihilation into the C=+1 Hadronic Final States ρ0ρ0 and ϕρ0 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 550073 | - |
dc.date.updated | 2019-09-18T12:58:29Z | - |
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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550073.pdf | 347.15 kB | Adobe PDF | View/Open |
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