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Measurement of the top quark mass in the all-jets final state at s=13 TeV\sqrt{s}=13~\mathrm{TeV}

Collaboration
2018
Report number:
  • CMS-PAS-TOP-17-008
Experiments:
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Abstract:
A top quark mass measurement is performed using 35.9 fb−135.9~\mathrm{fb}^{-1} of LHC proton-proton collision data collected with the CMS detector at s=13 TeV\sqrt{s}=13~\mathrm{TeV} in 2016. The measurement uses the tt‾\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 tt‾\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\text{JSF}). The result of 172.34±0.20 (stat+JSF)±0.76 (syst) GeV172.34\pm0.20\,\text{(stat+JSF)}\pm0.76\,\text{(syst)}~\mathrm{GeV} for the top quark mass is in good agreement with previous measurements in the same and different final states.
Note:
  • Preliminary results
  • Data
  • p p: colliding beams
  • top: pair production
  • top: mass: measured
  • jet: multiple production
  • top: hadronic decay
  • p p: scattering
  • quantum chromodynamics
  • CERN LHC Coll
  • kinematics
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