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dc.contributor.authorSirunyan, A. M.pt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2018-11-01T02:49:44Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn1029-8479pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/184290pt_BR
dc.description.abstractResults of a search for the standard model Higgs boson produced in association with a top quark pair (ttH) in nal states with electrons, muons, and hadronically decaying leptons are presented. The analyzed data set corresponds to an integrated luminosity of 35:9 fb􀀀1 recorded in proton-proton collisions at ps = 13TeV by the CMS experiment in 2016. The sensitivity of the search is improved by using matrix element and machine learning methods to separate the signal from backgrounds. The measured signal rate amounts to 1:23+0:45 􀀀0:43 times the production rate expected in the standard model, with an observed (expected) signi cance of 3:2 (2:8 ), which represents evidence for ttH production in those nal states. An upper limit on the signal rate of 2.1 times the standard model production rate is set at 95% con dence level.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe journal of high energy physics. Trieste. No. 8 (Aug. 2018), 066, 54 p.pt_BR
dc.rightsOpen Accessen
dc.subjectHadron-Hadron scattering (experiments)en
dc.subjectAceleradores de partículaspt_BR
dc.subjectHiggs physicsen
dc.subjectColisões proton-protonpt_BR
dc.subjectMétodo de Monte Carlopt_BR
dc.subjectTop physicsen
dc.subjectBosons de higgspt_BR
dc.titleEvidence for associated production of a Higgs boson with a top quark pair in final states with electrons, muons, and hadronically decaying τ leptons at √s = 13TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001078931pt_BR
dc.type.originEstrangeiropt_BR


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