Measurement of the gamma gamma* --> eta_c transition form factor

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dc.contributor.authorGraugés Pous, Eugeni
dc.contributor.authorGarra Ticó, Jordi
dc.contributor.authorBABAR Collaboration
dc.date.accessioned2018-09-25T16:46:22Z
dc.date.available2018-09-25T16:46:22Z
dc.date.issued2010
dc.date.updated2018-09-25T16:46:22Z
dc.description.abstractWe study the reaction e+e- --> e+e- eta_c, eta_c --> K_S K+- pi-+ and obtain eta_c mass and width values 2982.2+-0.4+-1.6 MeV/c^2 and 31.7+-1.2+-0.8 MeV, respectively. We find Gamma(eta_c --> gamma gamma)B(eta_c --> K anti-K pi)=0.374+-0.009+-0.031 keV, and measure the gamma gamma* --> eta_c transition form factor in the momentum transfer range from 2 to 50 GeV^2. The analysis is based on 469 fb-1 of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV.
dc.format.extent18 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec601938
dc.identifier.issn1550-7998
dc.identifier.urihttps://hdl.handle.net/2445/124809
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.81.052010
dc.relation.ispartofPhysical Review D, 2010, vol. 81, p. 052010
dc.relation.urihttps://doi.org/10.1103/PhysRevD.81.052010
dc.rights(c) American Physical Society, 2010
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationHadrons
dc.subject.classificationMesons (Física nuclear)
dc.subject.otherHadrons
dc.subject.otherMesons (Nuclear physics)
dc.titleMeasurement of the gamma gamma* --> eta_c transition form factor
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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