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Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV

A measurement of the 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 $77.5~\textrm{fb}^{-1}$, collected by the CMS experime...

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Autor principal: CMS Collaboration
Publicado: 2019
Materias:
Acceso en línea:http://cds.cern.ch/record/2666205
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description A measurement of the 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 $77.5~\textrm{fb}^{-1}$, collected by the CMS experiment during 2016 and 2017. The measurement is performed in the three- and four-lepton final states. The production cross section is measured to be $\sigma(\mathrm{t}\overline{\mathrm{t}}\mathrm{Z})=1.00~^{+0.06}_{-0.05}\,\mathrm{ (stat) }\,^{+0.07}_{-0.06}\,\mathrm{ (syst)}$ pb. Differential cross sections are measured as a function of the transverse momentum of the Z boson and the angular distribution of the decay lepton. New stringent limits on the anomalous couplings of the top quark to the Z boson are obtained, including estimates of Wilson coefficients of standard model effective field theory.
id cern-2666205
institution Organización Europea para la Investigación Nuclear
publishDate 2019
record_format invenio
spelling cern-26662052019-09-30T06:29:59Zhttp://cds.cern.ch/record/2666205CMS CollaborationMeasurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeVParticle Physics - ExperimentA measurement of the 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 $77.5~\textrm{fb}^{-1}$, collected by the CMS experiment during 2016 and 2017. The measurement is performed in the three- and four-lepton final states. The production cross section is measured to be $\sigma(\mathrm{t}\overline{\mathrm{t}}\mathrm{Z})=1.00~^{+0.06}_{-0.05}\,\mathrm{ (stat) }\,^{+0.07}_{-0.06}\,\mathrm{ (syst)}$ pb. Differential cross sections are measured as a function of the transverse momentum of the Z boson and the angular distribution of the decay lepton. New stringent limits on the anomalous couplings of the top quark to the Z boson are obtained, including estimates of Wilson coefficients of standard model effective field theory.CMS-PAS-TOP-18-009oai:cds.cern.ch:26662052019
spellingShingle Particle Physics - Experiment
CMS Collaboration
Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
title Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_full Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_fullStr Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_full_unstemmed Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_short Measurement of top quark pair production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
title_sort measurement of top quark pair production in association with a z boson in proton-proton collisions at $\sqrt{s}$ = 13 tev
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2666205
work_keys_str_mv AT cmscollaboration measurementoftopquarkpairproductioninassociationwithazbosoninprotonprotoncollisionsatsqrts13tev