Measurement of the Top Quark and W Boson Masses

Details Measurement of the Top Quark and W Boson Masses Measurement of the Top Quark and W Boson Masses

2009-06-09

arxiv.org/abs/0906.1690v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 4 figures, 2 tables, 44th Rencontres de Moriond QCD proceedings

Scientific paper

We measure the top quark mass in top-antitop events using up to 3.6 /fb of proton-antiproton collisions at sqrt{s}=2 TeV. New results are described for matrix element methods with single lepton and dilepton channels, and template methods with all-jets and dilepton channels. Standardization of systematic uncertainties has proceeded between the CDF and D0 collaborations. A combined measurement of 173.1+/-0.6(stat)+/-1.1(syst) GeV is achieved. Fits to all measured electroweak parameters gives a Higgs boson mass 95% CL upper limit of m_H < 163 GeV. We also present a new measurement of the W boson mass from D0. Three different template methods are performed. Accounting for their correlations, a combined measurement of M_W=80.401+/-0.043(stat+syst) GeV is obtained.

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