A Combination of CDF and D0 Results on the Mass of the Top Quark
Tevatron Electroweak Working Group (for the CDF Collaboration, the, D0 Collaboration)
TL;DR
This paper combines measurements from CDF and D0 experiments at Fermilab to provide a precise world average of the top-quark mass, accounting for uncertainties and correlations.
Contribution
It presents a new combined analysis of top-quark mass measurements from Run-I and Run-II, improving the precision of the world average mass estimate.
Findings
World average top-quark mass: 170.9 GeV/c2
Total uncertainty: 1.8 GeV/c2 (1.1% precision)
Systematic uncertainties are carefully correlated and included
Abstract
We summarize the top-quark mass measurements from the CDF and D0 experiments at Fermilab. We combine published Run-I measurements with the most recent Run-II measurements. Taking correlated uncertainties into account the resulting preliminary world average top-quark mass is Mt=170.9+/-1.1(sta)+/-1.5(sys) GeV/c2 assuming Gaussian systematic uncertainties. Adding in quadrature yields a total uncertainty of 1.8 GeV/c2, corresponding to a relative precision of 1.1% on the mass of the top quark.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research