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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.authorApresyan, Artur
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.authorArisawa, Tetsuo
dc.contributor.authorAmerio, Silvia
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2013-05-23T11:39:34Z
dc.date.available2013-05-23T11:39:34Z
dc.date.issued2011-06-08
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/10902/2176
dc.description.abstractWe present a new measurement of the inclusive forward-backward tt̅ production asymmetry and its rapidity and mass dependence. The measurements are performed with data corresponding to an integrated luminosity of 5.3  fb-1 of pp̅ collisions at √s=1.96  TeV, recorded with the CDF-II Detector at the Fermilab Tevatron. Significant inclusive asymmetries are observed in both the laboratory frame and the tt̅ rest frame, and in both cases are found to be consistent with CP conservation under interchange of t and t̅ . In the tt̅ rest frame, the asymmetry is observed to increase with the tt̅ rapidity difference, Δy, and with the invariant mass Mtt̅ of the tt̅ system. Fully corrected parton-level asymmetries are derived in two regions of each variable, and the asymmetry is found to be most significant at large Δy and Mtt̅ . For Mtt̅ ≥450  GeV/c2, the parton-level asymmetry in the tt̅ rest frame is Att̅ =0.475±0.114 compared to a next-to-leading order QCD prediction of 0.088±0.013.es_ES
dc.format.extent23 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. 83, iss. 11, art. num. 112003 (2011)es_ES
dc.titleEvidence for a mass dependent forward-backward asymmetry in top quark pair productiones_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttp://dx.doi.org/10.1103/PhysRevD.83.112003
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1103/PhysRevD.83.112003
dc.type.versionpublishedVersiones_ES


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