Measurement of top quark pair production in association with a Z boson in proton-proton collisions at ? s = 13 TeV
| dc.WoS.categories | Physics, Particles & Fields | en_US |
| dc.contributor.author | Yetkin, Elif Aslı | |
| dc.date.accessioned | 2020-05-22T13:39:48Z | |
| dc.date.available | 2020-05-22T13:39:48Z | |
| dc.date.issued | 2020-03-10 | |
| dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
| 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 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.description.sponsorship | BMBWF (Austria) Austrian Science Fund (FWF) Fonds de la Recherche Scientifique - FNRS FWO | en_US |
| dc.fullTextLevel | Full Text | en_US |
| dc.identifier.doi | 10.1007/JHEP03(2020)056 | |
| dc.identifier.issn | 1029-8479 | |
| dc.identifier.scopus | 2-s2.0-85081715381 | en_US |
| dc.identifier.uri | https://hdl.handle.net/11411/2070 | |
| dc.identifier.uri | https://doi.org/10.1007/JHEP03(2020)056 | |
| dc.identifier.wos | WOS:000519956200002 | en_US |
| dc.identifier.wosquality | Q1 | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.issue | 3 | en_US |
| dc.language.iso | en | en_US |
| dc.national | International | en_US |
| dc.numberofauthors | 1000+ | en_US |
| dc.publisher | Springer | en_US |
| dc.relation.ispartof | Journal of High Energy Physics | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.scopus.SNIP | 1.132 | en_US |
| dc.subject | Hadron-Hadron scattering (experiments) | en_US |
| dc.subject | Top physics | en_US |
| dc.title | Measurement of top quark pair production in association with a Z boson in proton-proton collisions at ? s = 13 TeV | |
| dc.type | Article |
