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Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$
An indirect measurement of the Higgs Yukawa coupling to the top quark is presented using pp collision at $\sqrt{s}=13~\mathrm{TeV}$ with an integrated luminosity of $137~\mathrm{fb}^{-1}$ recorded by the CMS detector. The coupling strength with respect to the standard model value, $Y_\mathrm{t}$, is...
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2020
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Acceso en línea: | http://cds.cern.ch/record/2718943 |
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author | CMS Collaboration |
author_facet | CMS Collaboration |
author_sort | CMS Collaboration |
collection | CERN |
description | An indirect measurement of the Higgs Yukawa coupling to the top quark is presented using pp collision at $\sqrt{s}=13~\mathrm{TeV}$ with an integrated luminosity of $137~\mathrm{fb}^{-1}$ recorded by the CMS detector. The coupling strength with respect to the standard model value, $Y_\mathrm{t}$, is determined from kinematic distributions in $\mathrm{t\bar{t}}$ production final states containing ee, $\mu\mu$, or e$\mu$ pairs. Sensitivity to the Yukawa coupling originates from altered distributions of $\mathrm{t\bar{t}}$ production in the presence of virtual Higgs boson exchange. In particular the distributions of the mass of the $\mathrm{t\bar{t}}$ system and the rapidity difference of the top quark and antiquark are sensitive to the value of $Y_\mathrm{t}$. The measurement yields a best-fit value of $Y_\mathrm{t}=1.16^{+0.24}_{-0.35}$ and a $95\%$ confidence interval of $Y_\mathrm{t}\in[0,1.62]$. |
id | cern-2718943 |
institution | Organización Europea para la Investigación Nuclear |
publishDate | 2020 |
record_format | invenio |
spelling | cern-27189432020-09-15T15:51:38Zhttp://cds.cern.ch/record/2718943CMS CollaborationMeasurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$Particle Physics - ExperimentAn indirect measurement of the Higgs Yukawa coupling to the top quark is presented using pp collision at $\sqrt{s}=13~\mathrm{TeV}$ with an integrated luminosity of $137~\mathrm{fb}^{-1}$ recorded by the CMS detector. The coupling strength with respect to the standard model value, $Y_\mathrm{t}$, is determined from kinematic distributions in $\mathrm{t\bar{t}}$ production final states containing ee, $\mu\mu$, or e$\mu$ pairs. Sensitivity to the Yukawa coupling originates from altered distributions of $\mathrm{t\bar{t}}$ production in the presence of virtual Higgs boson exchange. In particular the distributions of the mass of the $\mathrm{t\bar{t}}$ system and the rapidity difference of the top quark and antiquark are sensitive to the value of $Y_\mathrm{t}$. The measurement yields a best-fit value of $Y_\mathrm{t}=1.16^{+0.24}_{-0.35}$ and a $95\%$ confidence interval of $Y_\mathrm{t}\in[0,1.62]$.CMS-PAS-TOP-19-008oai:cds.cern.ch:27189432020 |
spellingShingle | Particle Physics - Experiment CMS Collaboration Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$ |
title | Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$ |
title_full | Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$ |
title_fullStr | Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$ |
title_full_unstemmed | Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$ |
title_short | Measurement of the top quark Yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{TeV}$ |
title_sort | measurement of the top quark yukawa coupling from $\mathrm{t}\bar{\mathrm{t}}$ kinematic distributions in the dilepton final state at $\sqrt{s}=13~\mathrm{tev}$ |
topic | Particle Physics - Experiment |
url | http://cds.cern.ch/record/2718943 |
work_keys_str_mv | AT cmscollaboration measurementofthetopquarkyukawacouplingfrommathrmtbarmathrmtkinematicdistributionsinthedileptonfinalstateatsqrts13mathrmtev |