Combination of CDF and D0 Results on the Mass of the Top Quark

Details Combination of CDF and D0 Results on the Mass of the Top Quark Combination of CDF and D0 Results on the Mass of the Top Quark

2008-08-07

arxiv.org/abs/0808.1089v1

Physics

High Energy Physics

High Energy Physics - Experiment

13 pages, 1 figure

Scientific paper

We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run-I (1992-1996) measurements with the most recent preliminary Run-II (2001-present) measurements using up to 2.8 fb^-1 of data. Taking correlated uncertainties properly into account the resulting preliminary world average mass of the top quark is M_t = 172.4 +/- 0.7 (stat.) +/- 1.0 (syst.) GeV/c^2, assuming Gaussian systematic uncertainties. Adding in quadrature yields a total uncertainty of 1.2 GeV/c^2, corresponding to a relative precision of 0.7% on the top-quark mass.

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