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dc.contributor.authorAaltonen, Timo Antero
dc.contributor.authorÁlvarez González, Bárbara
dc.contributor.authorAmidei, Dante
dc.contributor.authorAnastassov, Anton
dc.contributor.authorAnnovi, Alberto
dc.contributor.authorAntos, Jaroslav
dc.contributor.authorApollinari, Giorgio
dc.contributor.authorAppel, Jeffrey A.
dc.contributor.authorCasal Laraña, Bruno
dc.contributor.authorCuevas Maestro, Francisco Javier
dc.contributor.authorGómez Gramuglio, Gervasio
dc.contributor.authorPalencia Cortezón, Enrique
dc.contributor.authorRodrigo Anoro, Teresa 
dc.contributor.authorRuiz Jimeno, Alberto 
dc.contributor.authorScodellaro, Luca
dc.contributor.authorVila Álvarez, Iván
dc.contributor.authorVilar Cortabitarte, Rocío 
dc.contributor.authorVizán García, Jesús Manuel
dc.contributor.authorApresyan, Artur
dc.contributor.authorAmerio, Silvia
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2013-05-24T09:10:42Z
dc.date.available2013-05-24T09:10:42Z
dc.date.issued2011-09-30
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/10902/2186
dc.description.abstractWe present a study of Bs0 decays to the CP-odd final state J/ψf0(980) with J/ψ→μ+μ- and f0(980)→π+π-. Using pp̅ collision data with an integrated luminosity of 3.8  fb-1 collected by the CDF II detector at the Tevatron we measure a Bs0 lifetime of τ(Bs0→J/ψf0(980))=1.70-0.11+0.12(stat)±0.03(syst)ps. This is the first measurement of the Bs0 lifetime in a decay to a CP eigenstate and corresponds in the standard model to the lifetime of the heavy Bs0 eigenstate. We also measure the product of branching fractions of Bs0→J/ψf0(980) and f0(980)→π+π- relative to the product of branching fractions of Bs0→J/ψϕ and ϕ→K+K- to be Rf0/ϕ=0.257±0.020(stat)±0.014(syst), which is the most precise determination of this quantity to date.es_ES
dc.format.extent14 p.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.rights© 2011 American Physical Societyes_ES
dc.sourcePhysical review. D, Particles, fields, gravitation, and cosmology, vol. 84, iss. 5, art. num. 052012 (2011)es_ES
dc.titleMeasurement of branching ratio and Bs0 lifetime in the decay Bs0→J/ψf0(980) at CDFes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttp://dx.doi.org/10.1103/PhysRevD.84.052012
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1103/PhysRevD.84.052012
dc.type.versionpublishedVersiones_ES


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