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dc.contributor.authorKhachatryan, Vladimir
dc.contributor.authorBrochero Cifuentes, Javier Andrés
dc.contributor.authorCabrillo Bartolomé, José Iban
dc.contributor.authorCalderón Tazón, Alicia
dc.contributor.authorDuarte Campderros, Jorge
dc.contributor.authorFernández García, Marcos 
dc.contributor.authorGómez Gramuglio, Gervasio
dc.contributor.authorGraziano, Alberto
dc.contributor.authorLópez Virto, María Amparo
dc.contributor.authorMarco de Lucas, Jesús
dc.contributor.authorMarco de Lucas, Rafael José
dc.contributor.authorMartínez Rivero, Celso
dc.contributor.authorMatorras Weinig, Francisco 
dc.contributor.authorMuñoz Sánchez, Francisca Javiela
dc.contributor.authorPiedra Gómez, Jonatan
dc.contributor.authorRodrigo Anoro, Teresa 
dc.contributor.authorRodríguez Marrero, Ana Yaiza
dc.contributor.authorRuiz Jimeno, Alberto 
dc.contributor.authorScodellaro, Luca
dc.contributor.authorVila Álvarez, Ivan
dc.contributor.authorVilar Cortabitarte, Rocío 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2018-06-27T07:24:26Z
dc.date.available2018-06-27T07:24:26Z
dc.date.issued2015-06
dc.identifier.issn1434-6044
dc.identifier.issn1434-6052
dc.identifier.otherFPA2014-55295-C3-1-R
dc.identifier.otherFPA 2011-28694-C02-01
dc.identifier.urihttp://hdl.handle.net/10902/14039
dc.description.abstractA search for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks is presented. Events with hadronic jets and one or two oppositely charged leptons are selected from a data sample corresponding to an integrated luminosity of 19.5 fb-1 collected by the CMS experiment at the LHC in pp collisions at a centre-of-mass energy of 8 TeV. In order to separate the signal from the larger tt¯ + jets background, this analysis uses a matrix element method that assigns a probability density value to each reconstructed event under signal or background hypotheses. The ratio between the two values is used in a maximum likelihood fit to extract the signal yield. The results are presented in terms of the measured signal strength modifier, µ, relative to the standard model prediction for a Higgs boson mass of 125 GeV. The observed (expected) exclusion limit at a 95 % confidence level is µ<4.2 (3.3), corresponding to a best fit value µ^=1.2+1.6-1.5.es_ES
dc.description.sponsorship[…] the Secretaría de Estado de Investigación, Desarrollo e Innovación and Programa Consolider-Ingenio 2010, Spain […]es_ES
dc.format.extent28 p.es_ES
dc.language.isoenges_ES
dc.publisherSpringer New York LLCes_ES
dc.rightsAttribution 4.0 International © CERN for the benefit of the CMS collaborationes_ES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.sourceEuropean Physical Journal C, Vol. 75, Num. 6, Art. Num. 251, (2015)es_ES
dc.titleSearch for a standard model Higgs boson produced in association with a top-quark pair and decaying to bottom quarks using a matrix element methodes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttps://doi.org/10.1140/epjc/s10052-015-3454-1es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1140/epjc/s10052-015-3454-1
dc.type.versionpublishedVersiones_ES


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Attribution 4.0 International  © CERN for the benefit of the CMS collaborationExcept where otherwise noted, this item's license is described as Attribution 4.0 International © CERN for the benefit of the CMS collaboration