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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.accessioned2018-09-14T02:29:24Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn1029-8479pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/181951pt_BR
dc.description.abstractA search is presented for the associated production of a Higgs boson with a top quark pair in the all-jet nal state. Events containing seven or more jets are selected from a sample of proton-proton collisions at ps = 13TeV collected with the CMS detector at the LHC in 2016, corresponding to an integrated luminosity of 35.9 fb􀀀1. To separate the t tH signal from the irreducible t t + b b background, the analysis assigns leading order matrix element signal and background probability densities to each event. A likelihoodratio statistic based on these probability densities is used to extract the signal. The results are provided in terms of an observed t tH signal strength relative to the standard model production cross section = = SM, assuming a Higgs boson mass of 125 GeV. The best t value is ^ = 0:9 0:7(stat) 1:3(syst) = 0:9 1:5 (tot), and the observed and expected upper limits are, respectively, < 3:8 and < 3:1 at 95% con dence levels.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe journal of high energy physics. Trieste. No. 6 (June 2018), 101, 45 p.pt_BR
dc.rightsOpen Accessen
dc.subjectHadron-Hadron scattering (experiments)en
dc.subjectBosons de higgspt_BR
dc.subjectAceleradores de partículaspt_BR
dc.subjectHiggs physicsen
dc.subjectColisões proton-protonpt_BR
dc.subjectTop physicsen
dc.titleSearch for tt¯H production in the all-jet final state in proton-proton collisions at √s = 13 TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001072354pt_BR
dc.type.originEstrangeiropt_BR


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