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dc.contributor.authorAbellan Beteta, Carlos-
dc.contributor.authorCalvo Gómez, Míriam-
dc.contributor.authorCamboni, Alessandro-
dc.contributor.authorComerma Montells, Albert-
dc.contributor.authorDomingo Bonal, Francesc-
dc.contributor.authorGarrido Beltrán, Lluís-
dc.contributor.authorGascón Fora, David-
dc.contributor.authorGrabalosa Gándara, Marc-
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.authorPie Valls, B. (Blai)-
dc.contributor.authorPotterat, Cédric-
dc.contributor.authorPuig Navarro, Albert-
dc.contributor.authorRoselló, M.-
dc.contributor.authorRuiz, Hugo (Ruiz Pérez)-
dc.contributor.authorVázquez Gómez, Ricard-
dc.contributor.authorVilasis-Cardona, Xavier-
dc.contributor.authorLHCb Collaboration-
dc.description.abstractThe decay ¯¯¯ B 0 s → J / ψ π + π − can be exploited to study C P violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state is performed using a 1.0     fb − 1 sample of data produced in 7 TeV p p collisions at the LHC and collected by the LHCb experiment. A modified Dalitz plot analysis of the final state is performed using both the invariant mass spectra and the decay angular distributions. The π + π − system is shown to be dominantly in an S -wave state, and the C P -odd fraction in this ¯¯¯ B 0 s decay is shown to be greater than 0.977 at 95% confidence level. In addition, we report the first measurement of the J / ψ π + π − branching fraction relative to J / ψ ϕ of ( 19.79 ± 0.47 ± 0.52 ) % .-
dc.format.extent20 p.-
dc.publisherAmerican Physical Society-
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofPhysical Review D, 2012, vol. 86, num. 5, p. 052006 -377-
dc.rightscc by (c) CERN; LHCb Collaboration, 2012-
dc.subject.classificationFísica de partícules-
dc.subject.otherParticle physics-
dc.titleAnalysis of the resonant components in ¯¯¯B0s→J/ψπ+π−-
Appears in Collections:Articles publicats en revistes (Electrònica)
Articles publicats en revistes (Física de la Matèria Condensada)
Articles publicats en revistes (Física Quàntica i Astrofísica)

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