Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV

Sirunyan, Albert M; ...; Antunović, Željko; Brigljević, Vuko; Ceci, Saša; Ferenček, Dinko; Giljanović, Duje; Godinović, Nikola; Kadija, Krešo; Kovač, Marko; Lelas, Damir; Luetić, Jelena; Majumder, Devdatta; Mesić, Benjamin; Puljak, Ivica; Roguljić, Matej; Starodumov, Andrey; Đurić, Senka; Šuša, Tatjana; Šćulac, Toni; ...; Woods, Nathaniel

doi:10.1007/JHEP03(2020)056

Pregled bibliografske jedinice broj: 1108582

Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV

(CMS Collaboration) Sirunyan, Albert M; ...; Antunović, Željko; Brigljević, Vuko; Ceci, Saša; Ferenček, Dinko; Giljanović, Duje; Godinović, Nikola; Kadija, Krešo; Kovač, Marko et al.

Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV // The Journal of high energy physics, 03 (2020), 056, 47 doi:10.1007/JHEP03(2020)056 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 1108582 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Measurement of top quark pair production in association with a Z boson in proton-proton collisions at √s = 13 TeV

Autori
Sirunyan, Albert M ; ... ; Antunović, Željko ; Brigljević, Vuko ; Ceci, Saša ; Ferenček, Dinko ; Giljanović, Duje ; Godinović, Nikola ; Kadija, Krešo ; Kovač, Marko ; Lelas, Damir ; Luetić, Jelena ; Majumder, Devdatta ; Mesić, Benjamin ; Puljak, Ivica ; Roguljić, Matej ; Starodumov, Andrey ; Đurić, Senka ; Šuša, Tatjana ; Šćulac, Toni ; ... ; Woods, Nathaniel

Kolaboracija
CMS Collaboration

Izvornik
The Journal of high energy physics (1126-6708) 03 (2020); 056, 47

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
High energy physics ; Experimental particle physics ; LHC ; CMS ; Particle Physics Experiments ; Physics ; Vector boson scattering ; Hadron-Hadron scattering (experiments) ; Supersymmetry ; Higgs physics ; Particle and resonance production ; B physics ; Particle correlations and fluctuations ; Quarkonium ; Elementary Particles and Fields ; Beyond Standard Model ; Jets ; QCD ; Top physics ; Diboson ; Electroweak ; CKM matrix ; Top quark ; Large detector-systems performance ; Pattern recognition

Sažetak
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(tt¯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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Split

Profili:

Matej Roguljić (autor)