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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/46270
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dc.contributor.authorAaltonen, T.-
dc.contributor.authorÁlvarez González, B.-
dc.contributor.authorCasal, Bruno-
dc.contributor.authorCuevas, Javier-
dc.contributor.authorGómez, Gervasio-
dc.contributor.authorPalencia, Enrique-
dc.contributor.authorRodrigo, Teresa-
dc.contributor.authorRuiz Jimeno, Alberto-
dc.contributor.authorScodellaro, Luca-
dc.contributor.authorVila, Iván-
dc.contributor.authorVilar Cortabitarte, R.-
dc.date.accessioned2012-02-27T12:37:19Z-
dc.date.available2012-02-27T12:37:19Z-
dc.date.issued2011-04-
dc.identifier.citationPhysical Review Letters 106(15): 152001 (2011)es_ES
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10261/46270-
dc.description7 páginas, 1 figura, 2 tablas.-- PACS numbers: 14.65.Ha, 12.15.Ff, 13.85.Ni, 13.85.Qk.-- CDF Collaboration: et al.es_ES
dc.description.abstractWe present a direct measurement of the mass difference between t and t̅ quarks using tt̅ candidate events in the lepton+jets channel, collected with the CDF II detector at Fermilab’s 1.96 TeV Tevatron pp̅ Collider. We make an event by event estimate of the mass difference to construct templates for top quark pair signal events and background events. The resulting mass difference distribution of data is compared to templates of signals and background using a maximum likelihood fit. From a sample corresponding to an integrated luminosity of 5.6  fb-1, we measure a mass difference, ΔMtop=Mt-Mt̅ =-3.3±1.4(stat)±1.0(syst)  GeV/c2, approximately 2 standard deviations away from the CPT hypothesis of zero mass difference.es_ES
dc.description.sponsorshipThis work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium für Bildung und Forschung, Germany; the Korean World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, UK; the Institut National de Physique Nucleaire et Physique des Particules/ CNRS; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; the Academy of Finland; and the Australian Research Council (ARC).es_ES
dc.language.isoenges_ES
dc.publisherAmerican Physical Societyes_ES
dc.rightsopenAccesses_ES
dc.titleMeasurement of the Mass Difference between t and t̅ Quarkses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1103/PhysRevLett.106.152001-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevLett.106.152001es_ES
dc.identifier.e-issn1079-7114-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
item.openairetypeartículo-
item.fulltextWith Fulltext-
item.languageiso639-1en-
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