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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorBergauer, T.
dc.contributor.authorBrandstetter, J.
dc.contributor.authorKarapınar, Güler
dc.contributor.authorCMS Collaboration
dc.date.accessioned2020-07-18T08:15:59Z
dc.date.available2020-07-18T08:15:59Z
dc.date.issued2020
dc.identifier.issn1029-8479
dc.identifier.urihttps://doi.org/10.1007/JHEP03(2020)056
dc.identifier.urihttps://hdl.handle.net/11147/8459
dc.descriptionWOS: 000519956200002en_US
dc.description.abstractA measurement of the inclusive cross section of top quark pair production in association with a Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC is performed. The data sample corresponds to an integrated luminosity of 77.5 fb(-1), collected by the CMS experiment during 2016 and 2017. The measurement is performed using final states containing three or four charged leptons (electrons or muons), and the Z boson is detected through its decay to an oppositely charged lepton pair. The production cross section is measured to be sigma (tt<mml:mo stretchy="true"><overbar></mml:mover>Z) = 0.95 +/- 0.05 (stat) +/- 0.06 (syst) pb. For the first time, differential cross sections are measured as functions of the transverse momentum of the Z boson and the angular distribution of the negatively charged lepton from the Z boson decay. The most stringent direct limits to date on the anomalous couplings of the top quark to the Z boson are presented, including constraints on the Wilson coefficients in the framework of the standard model effective field theory.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.isversionof10.1007/JHEP03(2020)056en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectHadron-Hadron scattering (experiments)en_US
dc.subjectTop physicsen_US
dc.titleMeasurement of top quark pair production in association with a Z boson in proton-proton collisions at <mml:msqrt>s</mml:msqrt>=13 TeVen_US
dc.typearticleen_US
dc.relation.journalJournal Of High Energy Physicsen_US
dc.contributor.departmentIzmir Institute of Technology. Mathematicsen_US
dc.identifier.issue3en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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