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Compact Muon Solenoid
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CMS-TOP-11-017 ; CERN-PH-EP-2013-124
Measurement of the top-quark mass in all-jets $ \mathrm{ t \bar{t} } $ events in pp collisions at $\sqrt{s}$ = 7 TeV
Eur. Phys. J. C 74 (2014) 2758
Abstract: The mass of the top quark is measured using a sample of $t\bar{t}$ candidate events with at least six jets in the final state. The sample is selected from data collected with the CMS detector in pp collisions at $\sqrt{s}$=7 TeV in 2011 and corresponds to an integrated luminosity of 3.54 inverse femtobarns. The mass is reconstructed for each event employing a kinematic fit of the jets to a $t\bar{t}$ hypothesis. The top-quark mass is measured to be 173.49 $\pm$ 0.69 (stat.) $\pm$ 1.21 (syst.) GeV. A combination with previously published measurements in other decay modes by CMS yields a mass of 173.54 $\pm$ 0.33 (stat.) $\pm$ 0.96 (syst.) GeV.
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Compact Muon Solenoid
LHC, CERN