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

2009-03-13

arxiv.org/abs/0903.2503v1

Physics

High Energy Physics

High Energy Physics - Experiment

FERMILAB-TM-2427-E, TEVEWWG/top 2009/03, CDF Note 9717, D0-NOTE-5899 15 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 3.6 fb-1 of data per experiment. Taking correlated uncertainties properly into account the resulting preliminary world average mass of the top quark is Mt = 173.1 +/- 0.6 (stat.) +/- 1.1 (syst.) GeV/c2, assuming Gaussian systematic uncertainties. Adding in quadrature yields a total uncertainty of 1.3 GeV/c2, corresponding to a relative precision of 0.75% on the top-quark mass.

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