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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorAdam, Wolfgang
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorBhopatkar, Vallary
dc.contributor.authorColafranceschi, Stefano
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorNoonan, Daniel
dc.contributor.authorRoy, Tuhin S.
dc.contributor.authorYumiceva, F.
dc.date.accessioned2019-03-07T16:41:30Z
dc.date.available2019-03-07T16:41:30Z
dc.date.issued2018-02-01
dc.identifier.citationSirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., . . . CMS Collaboration. (2018). Search for standard model production of four top quarks with same-sign and multilepton final states in proton–proton collisions at √s=13TeV. European Physical Journal C, 78(2) doi:10.1140/epjc/s10052-018-5607-5en_US
dc.identifier.urihttp://hdl.handle.net/11141/2705
dc.description.abstractA search for standard model production of four top quarks (t t ¯ t t ¯) is reported using events containing at least three leptons (e , μ) or a same-sign lepton pair. The events are produced in proton–proton collisions at a center-of-mass energy of 13TeV at the LHC, and the data sample, recorded in 2016, corresponds to an integrated luminosity of 35.9fb-1. Jet multiplicity and flavor are used to enhance signal sensitivity, and dedicated control regions are used to constrain the dominant backgrounds. The observed and expected signal significances are, respectively, 1.6 and 1.0 standard deviations, and the t t ¯ t t ¯ cross section is measured to be 16.9-11.4+13.8fb, in agreement with next-to-leading-order standard model predictions. These results are also used to constrain the Yukawa coupling between the top quark and the Higgs boson to be less than 2.1 times its expected standard model value at 95% confidence level.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is made available in accordance with publisher’s policy. It may be subject to U.S. copyright law.en_US
dc.rights.urihttps://www-proquest-com.portal.lib.fit.edu/about/terms-and-conditions.htmlen_US
dc.titleSearch for standard model production of four top quarks with same-sign and multilepton final states in proton–proton collisions at √s=13TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1140/epjc/s10052-018-5607-5


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