Combination of CDF and D0 Results on the Mass of the Top Quark
Tevatron Electroweak Working Group (for the CDF Collaboration, D0, Collaboration)
TL;DR
This paper combines measurements from CDF and D0 experiments at Fermilab to provide a precise preliminary world average of the top quark mass, achieving a 1.2% uncertainty.
Contribution
It presents the first combined analysis of Run-I and Run-II data, improving the precision of the top quark mass measurement by properly accounting for correlated uncertainties.
Findings
Top quark mass is 171.4 GeV/c2 with 2.1 GeV/c2 total uncertainty
Combined data from multiple runs enhances measurement precision
Achieves 1.2% overall precision in top quark mass
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 recent preliminary Run-II (2001-present) measurements using up to 1 fb-1 of data. Taking correlated uncertainties properly into account the resulting preliminary world average mass of the top quark is Mtop = 171.4 +/- 1.2 (stat) +/- 1.8 (syst) GeV/c2, which corresponds to a total uncertainty of 2.1 GeV/c2. The top-quark mass is now known with a precision of 1.2%.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research