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dc.contributor.authorAaltonen, Timo Antero
dc.contributor.authorAdelman, Jahred
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.authorAppel, Jeffrey A.
dc.contributor.authorApresyan, Artur
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 Alvarez, Ivan
dc.contributor.authorVilar Cortabitarte, Rocío 
dc.contributor.authorArisawa, Tetsuo
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2013-04-22T12:20:53Z
dc.date.available2013-04-22T12:20:53Z
dc.date.issued2010-12-15
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/10902/1940
dc.description.abstractWe report the observation of electroweak single top quark production in 3.2  fb-1 of pp̅ collision data collected by the Collider Detector at Fermilab at √s=1.96  TeV. Candidate events in the W+jets topology with a leptonically decaying W boson are classified as signal-like by four parallel analyses based on likelihood functions, matrix elements, neural networks, and boosted decision trees. These results are combined using a super discriminant analysis based on genetically evolved neural networks in order to improve the sensitivity. This combined result is further combined with that of a search for a single top quark signal in an orthogonal sample of events with missing transverse energy plus jets and no charged lepton. We observe a signal consistent with the standard model prediction but inconsistent with the background-only model by 5.0 standard deviations, with a median expected sensitivity in excess of 5.9 standard deviations. We measure a production cross section of 2.3-0.5+0.6(stat+sys)  pb, extract the value of the Cabibbo-Kobayashi-Maskawa matrix element |Vtb|=0.91-0.11+0.11(stat+sys)±0.07  (theory), and set a lower limit |Vtb|>0.71 at the 95% C.L., assuming mt=175  GeV/c2.es_ES
dc.format.extent59 p.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.rights© 2010 The American Physical Societyes_ES
dc.sourcePhysical Review. D, Particles, fields, gravitation, and cosmology, Vol. 82, iss. 11, art. num. 112005 (2010)es_ES
dc.titleObservation of single top quark production and measurement of |Vtb| with CDFes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttp://dx.doi.org/10.1103/PhysRevD.82.112005
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1103/PhysRevD.82.112005
dc.type.versionpublishedVersiones_ES


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