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| CMS-PAS-TOP-21-008 | ||
| Measurement of the top quark pole mass using $\text{t}\overline{\text{t}}$+jet events in the dilepton final state at $\sqrt{s}=$ 13 TeV | ||
| CMS Collaboration | ||
| March 2022 | ||
| Abstract: A measurement of the top quark pole mass $m_{\text{t}}^{\text{pole}}$ in events where a top quark-antiquark pair ($\text{t}\overline{\text{t}}$) is produced in association with one additional jet ($\text{t}\overline{\text{t}}$+jet) is presented. This analysis is performed using proton-proton collision data at $\sqrt{s}=$ 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to a total integrated luminosity of 36.3fb$^{-1}$. Events with two opposite charge leptons in the final state ($\text{e}^{+}\text{e}^{-}$, $\mu^{+}\mu^{-}$, $\text{e}^{\pm}\mu^{\mp}$) are analyzed. Using multivariate analysis techniques based on machine learning, the reconstruction of the main observable and the event selection are optimized. The production cross section is measured as a function of the inverse invariant mass of the $\text{t}\overline{\text{t}}$+jet system at the parton level, using a maximum likelihood unfolding. The top quark pole mass is extracted using the theory predictions at next-to-leading order, resulting in $m_{\text{t}}^{\text{pole}}=$ 172.94 $\pm$ 1.37 GeV when using the ABMP16NLO parton distribution functions. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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