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Observation of the exclusive reaction e+e− → ϕη at √-s = 10.58 GeV

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dc.contributor.authorGraugés Pous, Eugeni
dc.contributor.authorBABAR Collaboration
dc.date.accessioned2019-04-04T13:32:36Z
dc.date.available2019-04-04T13:32:36Z
dc.date.issued2006-12-22
dc.date.updated2019-04-04T13:32:36Z
dc.description.abstractWe report the observation of e + e − → ϕ η near √ s = 10.58     GeV with 6.5 σ significance in the K + K − γ γ final state in a data sample of 224     fb − 1 collected by the BABAR experiment at the PEP-II e + e − storage rings. We measure the restricted radiation-corrected cross section to be σ ( e + e − → ϕ η ) = 2.1 ± 0.4 ( stat ) ± 0.1 ( syst )     fb within the range | cos  θ ∗ | < 0.8 , where θ ∗ is the center-of-mass polar angle of the ϕ meson. The ϕ meson is required to be in the invariant mass range of 1.008 < m ϕ < 1.035     GeV / c 2 . The radiation-corrected cross section in the full cos  θ ∗ range is extrapolated to be 2.9 ± 0.5 ( stat ) ± 0.1 ( syst )     fb .
dc.format.extent7 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec551673
dc.identifier.issn1550-7998
dc.identifier.urihttps://hdl.handle.net/2445/131427
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.74.111103
dc.relation.ispartofPhysical Review D, 2006, vol. 74, num. 11, p. 111103(R)
dc.relation.urihttps://doi.org/10.1103/PhysRevD.74.111103
dc.rights(c) American Physical Society, 2006
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationFísica de partícules
dc.subject.classificationExperiments
dc.subject.otherParticle physics
dc.subject.otherExperiments
dc.titleObservation of the exclusive reaction e+e− → ϕη at √-s = 10.58 GeV
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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