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dc.contributor.authorÇetin, Serkant Ali
dc.contributor.authorBESIII Collaboration
dc.date.accessioned2015-08-04T13:34:06Z
dc.date.available2015-08-04T13:34:06Z
dc.date.issued2015-07-01
dc.identifier.citationAblikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J. ... BESIII Collaboration. (2015). Observation of the dalitz decay eta ' -> gamma e(+)e(-). Physical Review D, 92 (1), 11p. https://dx.doi.org/10.1103/PhysRevD.92.012001.en_US
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.other000357162400002 (WOS)
dc.identifier.urihttps://dx.doi.org/10.1103/PhysRevD.92.012001
dc.identifier.urihttps://hdl.handle.net/11376/1877
dc.description.abstractWe report the first observation of the Dalitz decay eta' -> gamma e(+)e(-), based on a data sample of 1.31 billion J/psi events collected with the BESIII detector. The eta' mesons are produced via the J/psi -> gamma eta' decay process. The ratio (eta' -> gamma e(+)e(-))/Gamma (eta' -> gamma gamma) is measured to be (2.13 +/- 0.09(stat) +/- 0.07(sys)) x 10(-2). This corresponds to a branching fraction B(eta' -> gamma e(+)e(-)) = (4.69 +/- 0.20(stat) +/- 0.23(sys)) x 10(-4). The transition form factor is extracted and different expressions are compared to the measured dependence on the e(+)e(-) invariant mass. The results are consistent with the prediction of the vector meson dominance model.en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.identifier.doi10.1103/PhysRevD.92.012001en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectElectromagnetic Form-Factorsen_US
dc.subjectDominanceen_US
dc.subjectMesonsen_US
dc.subjectBesiiien_US
dc.subjectPi-0en_US
dc.titleObservation of the dalitz decay eta ' -> gamma e(+)e(-)en_US
dc.typearticleen_US
dc.relation.journalPhysical Review Den_US
dc.departmentDoğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.authoridTR3959en_US
dc.identifier.volume92en_US
dc.identifier.issue1en_US
dc.identifier.startpage1en_US
dc.identifier.endpage11en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.institutionauthorÇetin, Serkant Ali


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