Search for production of four top quarks in final states with svame-sign or multiple leptons in proton-proton collisions at root s=13 TeV

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dc.contributor.author The CMS collaboration
dc.contributor.author Eerola, P.
dc.contributor.author Forthomme, L.
dc.contributor.author Kirschenmann, H.
dc.contributor.author Osterberg, K.
dc.contributor.author Voutilainen, M.
dc.contributor.author Garcia, F.
dc.contributor.author Havukainen, J.
dc.contributor.author Heikkila, J. K.
dc.contributor.author Jarvinen, T.
dc.contributor.author Kim, M. S.
dc.contributor.author Kinnunen, R.
dc.contributor.author Lampen, T.
dc.contributor.author Lassila-Perini, K.
dc.contributor.author Laurila, S.
dc.contributor.author Lehti, S.
dc.contributor.author Linden, T.
dc.contributor.author Luukka, P.
dc.contributor.author Maenpaa, T.
dc.contributor.author Siikonen, H.
dc.contributor.author Tuominen, E.
dc.contributor.author Tuominiemi, J.
dc.contributor.author Viinikainen, J.
dc.contributor.author Pekkanen, J.
dc.contributor.author Sirunyan, A. M.
dc.contributor.author Tumasyan, A.
dc.contributor.author Tuuva, T.
dc.date.accessioned 2020-05-13T03:20:03Z
dc.date.available 2020-05-13T03:20:03Z
dc.date.issued 2020-01-31
dc.identifier.citation The CMS Collaboration , Eerola , P , Forthomme , L , Kirschenmann , H , Osterberg , K , Voutilainen , M , Garcia , F , Havukainen , J , Heikkila , J K , Jarvinen , T , Kim , M S , Kinnunen , R , Lampen , T , Lassila-Perini , K , Laurila , S , Lehti , S , Linden , T , Luukka , P , Maenpaa , T , Siikonen , H , Tuominen , E , Tuominiemi , J , Viinikainen , J , Pekkanen , J , Sirunyan , A M , Tumasyan , A & Tuuva , T 2020 , ' Search for production of four top quarks in final states with svame-sign or multiple leptons in proton-proton collisions at root s=13 TeV ' , European Physical Journal C. Particles and Fields , vol. 80 , no. 2 , 75 . https://doi.org/10.1140/epjc/s10052-019-7593-7
dc.identifier.other PURE: 137045186
dc.identifier.other PURE UUID: 70334f50-b00d-4266-9893-039a3eb61912
dc.identifier.other WOS: 000513235800003
dc.identifier.other ORCID: /0000-0002-7073-7767/work/74067012
dc.identifier.other ORCID: /0000-0003-4807-0414/work/74067657
dc.identifier.other ORCID: /0000-0002-5200-6477/work/74068432
dc.identifier.other ORCID: /0000-0003-2039-5874/work/74069240
dc.identifier.other ORCID: /0000-0002-4023-7964/work/74070299
dc.identifier.other ORCID: /0000-0001-7369-2536/work/74070596
dc.identifier.other ORCID: /0000-0003-2898-6900/work/74070604
dc.identifier.other ORCID: /0000-0001-7507-8636/work/83053104
dc.identifier.other ORCID: /0000-0002-0538-1469/work/83054478
dc.identifier.other ORCID: /0000-0003-0392-8691/work/85520673
dc.identifier.other ORCID: /0000-0003-2530-4265/work/109726185
dc.identifier.uri http://hdl.handle.net/10138/314804
dc.description.abstract The standard model (SM) production of four top quarks (tt over bar tt over ba in proton-proton collisions is studied by the CMS Collaboration. The data sample, collected during the 2016-2018 data taking of the LHC, corresponds to an integrated luminosity of 137fb-1 at a center-of-mass energy of 13TeV. The events are required to contain two same-sign charged leptons (electrons or muons) or at least three leptons, and jets. The observed and expected significances for the tt over bar tt over bar signal are respectively 2.6 and 2.7 standard deviations, and the tt over bar tt over bar cross section is measured to be 12.6-5.2+5.8fb. The results are used to constrain the Yukawa coupling of the top quark to the Higgs boson, yielding a limit of <1. 7 is the SM value of yt. They are also used to constrain the oblique parameter of the Higgs boson in an effective field theory framework, H. Limits are set on the production of a heavy scalar or pseudoscalar boson in Type-II two-Higgs-doublet and simplified dark matter models, with exclusion limits reaching 350-470GeV and 350-550GeV for scalar and pseudoscalar bosons, respectively. Upper bounds are also set on couplings of the top quark to new light particles. en
dc.format.extent 31
dc.language.iso eng
dc.relation.ispartof European Physical Journal C. Particles and Fields
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 114 Physical sciences
dc.subject MODEL
dc.subject EXTENSION
dc.subject INVARIANT
dc.subject DECAY
dc.title Search for production of four top quarks in final states with svame-sign or multiple leptons in proton-proton collisions at root s=13 TeV en
dc.type Article
dc.contributor.organization Department of Physics
dc.contributor.organization Helsinki Institute of Physics
dc.contributor.organization Eija Tuominen / Principal Investigator
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1140/epjc/s10052-019-7593-7
dc.relation.issn 1434-6044
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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