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

Abstract : 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.
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http://hal.in2p3.fr/in2p3-01187316
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Submitted on : Wednesday, August 26, 2015 - 3:23:20 PM
Last modification on : Monday, December 13, 2021 - 9:15:25 AM

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V.M. Abazov, U. Bassler, M. Besançon, G. Bernardi, D. Brown, et al.. Precise measurement of the top quark mass in dilepton decays using optimized neutrino weighting. Physics Letters B, Elsevier, 2016, 752, pp.18-26. ⟨10.1016/j.physletb.2015.10.086⟩. ⟨in2p3-01187316⟩

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