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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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2019
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Acceso en línea: | http://cds.cern.ch/record/2666205 |
_version_ | 1780961993479421952 |
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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 |