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dc.contributor.authorAaltonen, Timo Antero
dc.contributor.authorAkimoto, Takashi
dc.contributor.authorAlbrow, Michael G.
dc.contributor.authorÁlvarez González, Bárbara
dc.contributor.authorAmerio, Silvia
dc.contributor.authorAmidei, Dante
dc.contributor.authorAnastassov, Anton
dc.contributor.authorAnnovi, Alberto
dc.contributor.authorAntos, Jaroslav
dc.contributor.authorApollinari, Giorgio
dc.contributor.authorCasal Laraña, Bruno
dc.contributor.authorCuevas Maestro, Francisco Javier
dc.contributor.authorGómez Gramuglio, Gervasio
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.authorApresyan, Artur
dc.contributor.authorAdelman, Jahred
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2013-04-29T13:12:47Z
dc.date.available2013-04-29T13:12:47Z
dc.date.issued2009-11-03
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.urihttp://hdl.handle.net/10902/2005
dc.description.abstractA combined mass and particle identification fit is used to make the first observation of the decay B̅ s0→Ds±K∓ and measure the branching fraction of B̅ s0→Ds±K∓ relative to B̅ s0→Ds+π-. This analysis uses 1.2  fb-1 integrated luminosity of pp̅ collisions at √s=1.96  TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a B̅ s0→Ds±K∓ signal with a statistical significance of 8.1σ and measure B(B̅ s0→Ds±K∓)/B(B̅ s0→Ds+π-)=0.097±0.018(stat)±0.009(syst).es_ES
dc.format.extent7 p.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.rights© 2009 The American Physical Societyes_ES
dc.sourcePhysical Review Letters, vol 103, iss. 19, art. num. 191802 (2009)es_ES
dc.titleFirst Observation of B̅ s0→Ds±K∓ and Measurement of the Ratio of Branching Fractions B(B̅ s0→Ds±K∓)/B(B̅ s0→Ds+π-)es_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttp://dx.doi.org/10.1103/PhysRevLett.103.191802
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1103/PhysRevLett.103.191802
dc.type.versionpublishedVersiones_ES


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