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Paper

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

Abstract

We summarize the top-quark mass measurements from the CDF and DO experiments at Fermilab. We combine published Run I (1992-1996) measurements with the most precise published and preliminary Run II (2001-present) measurements using up to 5.6fb-1 of data. Taking uncertainty correlations properly into account, and adding in quadrature the statistical and systematic uncertainties, the resulting preliminary Tevatron average mass of the top quark is M(top) = 173.3+-1.1.