Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting

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We measure the top quark mass in dilepton final states of top-antitop events in proton-antiproton collisions at sqrt(s) = 1.96 TeV, using data corresponding to an integrated luminosity of 9.7 fb^-1 at the Fermilab Tevatron Collider.

• The analysis features a comprehensive optimization of the neutrino weighting method to minimize the statistical uncertainties.
• We also improve the calibration of jet energies using the calibration determined in top-antitop to lepton+jets events, which reduces the otherwise limiting systematic uncertainty from the jet energy scale.
• The measured top quark mass is mt = 173.32 +/- 1.36(stat) +/- 0.85(syst) GeV.