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Compact Muon Solenoid
LHC, CERN

CMS-PAS-TOP-17-008
Measurement of the top quark mass in the all-jets final state at $\sqrt{s}= $ 13 TeV
Abstract: A top quark mass measurement is performed using 35.9 fb$^{-1}$ of LHC proton-proton collision data collected with the CMS detector at $\sqrt{s}= $ 13 TeV in 2016. The measurement uses the $\mathrm{t}\overline{\mathrm{t}}$ all-jets final state, which comprises a total of six jets. A kinematic fit is performed to reconstruct the decay of the $\mathrm{t}\overline{\mathrm{t}}$ system and suppress QCD multijet background. By means of the ideogram method, the top quark mass is determined, simultaneously constraining an additional jet energy scale factor (JSF). The result of 172.34 $\pm$ 0.20 (stat+JSF) $\pm$ 0.76 (syst) GeV for the top quark mass is in good agreement with previous measurements in the same and different final states.
CMS Publications
Compact Muon Solenoid
LHC, CERN