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Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV
dc.contributor | CMS Collaboration | |
dc.creator | Sirunyan, A. M. | |
dc.creator | Tumasyan, A. | |
dc.creator | Adam, W. | |
dc.creator | Ambrogi, F. | |
dc.creator | Adžić, Petar | |
dc.creator | Ćirković, Predrag | |
dc.creator | Devetak, Damir | |
dc.creator | Đorđević, Miloš | |
dc.creator | Milenović, Predrag | |
dc.creator | Milošević, Jovan | |
dc.creator | Stojanović, Milan | |
dc.date.accessioned | 2021-02-03T11:27:51Z | |
dc.date.available | 2021-02-03T11:27:51Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 1126-6708 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/8898 | |
dc.description.abstract | A 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 σ(t t ¯ 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. [Figure not available: see fulltext.] © 2020, The Author(s). | en |
dc.language.iso | en | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Journal of High Energy Physics | |
dc.title | Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV | en |
dc.type | article | en |
dc.rights.license | BY | |
dcterms.abstract | Сирунyан, A.М.; Тумасyан, A.; Aдам, W.; Aмброги, Ф.; Aджић, Петар; Ћирковић, Предраг; Деветак, Дамир; Ђорђевић, Милош; Миленовић, Предраг; Милошевић, Јован; Стојановић, Милан; | |
dc.rights.holder | © 2020 CERN. for the benefit of the CMS Collaboration | |
dc.citation.volume | 2020 | |
dc.citation.issue | 3 | |
dc.citation.spage | 56 | |
dc.identifier.wos | 000519956200002 | |
dc.identifier.doi | 10.1007/JHEP03(2020)056 | |
dc.description.other | CMS Collaboration (ukupan broj autora: 2336) | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-85081715381 | |
dc.identifier.fulltext | https://vinar.vin.bg.ac.rs/bitstream/id/22354/Sirunyan2020_Article_MeasurementOfTopQuarkPairProdu.pdf |
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