Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/131833
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dc.contributor.authorCamboni, Alessandro-
dc.contributor.authorComerma Montells, Albert-
dc.contributor.authorGarrido Beltrán, Lluís-
dc.contributor.authorGraciani Díaz, Ricardo-
dc.contributor.authorGraugés Pous, Eugeni-
dc.contributor.authorLópez Asamar, Elias-
dc.contributor.authorPérez-Calero Yzquierdo, Antonio-
dc.contributor.authorPicatoste Olloqui, Eduardo-
dc.contributor.authorPotterat, Cédric-
dc.contributor.authorRives Molina, Vicente José-
dc.contributor.authorRuiz, Hugo (Ruiz Pérez)-
dc.contributor.authorVázquez Gómez, Ricard-
dc.contributor.authorAbellan Beteta, Carlos-
dc.contributor.authorCalvo Gómez, Míriam-
dc.contributor.authorVilasis-Cardona, Xavier-
dc.contributor.authorDomingo Bonal, Francesc-
dc.contributor.authorLHCb Collaboration-
dc.date.accessioned2019-04-08T13:40:17Z-
dc.date.available2019-04-08T13:40:17Z-
dc.date.issued2013-04-01-
dc.identifier.issn1550-7998-
dc.identifier.urihttp://hdl.handle.net/2445/131833-
dc.description.abstractAn amplitude analysis of the final state structure in the ¯¯¯ B 0 s → J / ψ K + K − decay mode is performed using 1.0     fb − 1 of data collected by the LHCb experiment in 7 TeV center-of-mass energy p p collisions produced by the LHC. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. Resonant structures are observed in the K + K − mass spectrum as well as a significant nonresonant S -wave contribution over the entire K + K − mass range. The largest resonant component is the ϕ ( 1020 ) , accompanied by f 0 ( 980 ) , f ′ 2 ( 1525 ) , and four additional resonances. The overall branching fraction is measured to be B ( ¯¯¯ B 0 s → J / ψ K + K − ) = ( 7.70 ± 0.08 ± 0.39 ± 0.60 ) × 10 − 4 , where the first uncertainty is statistical, the second systematic, and the third due to the ratio of the number of ¯¯¯ B 0 s to B − mesons produced. The mass and width of the f ′ 2 ( 1525 ) are measured to be 1522.2 ± 2.8 + 5.3 − 2.0     MeV and 84 ± 6 + 10 − 5     MeV , respectively. The final state fractions of the other resonant states are also reported.-
dc.format.extent23 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevD.87.072004-
dc.relation.ispartofPhysical Review D, 2013, vol. 87, num. 7, p. 072004-
dc.relation.urihttps://doi.org/10.1103/PhysRevD.87.072004-
dc.rightscc by (c) CERN; LHCb Collaboration, 2013-
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/-
dc.subject.classificationFísica de partícules-
dc.subject.classificationExperiments-
dc.subject.otherParticle physics-
dc.subject.otherExperiments-
dc.titleAmplitude analysis and branching fraction measurement of B¯s0→J/ψK+K--
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec628975-
dc.date.updated2019-04-08T13:40:17Z-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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