Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/141360
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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 | 2019-10-01T10:00:10Z | - |
dc.date.available | 2019-10-01T10:00:10Z | - |
dc.date.issued | 2005-09-28 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/141360 | - |
dc.description.abstract | We study initial-state radiation events, e + e − → γ ISR π + π − J / ψ , with data collected with the BABAR detector. We observe an accumulation of events near 4.26 GeV / c 2 in the invariant-mass spectrum of π + π − J / ψ . Fits to the mass spectrum indicate that a broad resonance with a mass of about 4.26 GeV / c 2 is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to 90 MeV / c 2 , depending on the fit hypothesis. | - |
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.95.142001 | - |
dc.relation.ispartof | Physical Review Letters, 2005, vol. 95, num. 14, p. 142001 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.95.142001 | - |
dc.rights | (c) American Physical Society, 2005 | - |
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 a Broad Structure in the π+π−J/ψ Mass Spectrum around 4.26 GeV/c2 | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 539060 | - |
dc.date.updated | 2019-10-01T10:00:10Z | - |
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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539060.pdf | 209.62 kB | Adobe PDF | View/Open |
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