Top Quark Mass Measurements
A.P. Heinson (for the CDF Collaboration, D0 Collaboration)
TL;DR
This paper reviews the progress in measuring the top quark's mass, a key parameter in the Standard Model, highlighting recent high-precision results from Tevatron collider experiments.
Contribution
It summarizes the latest measurements of the top quark mass and discusses their implications for Standard Model predictions and Higgs boson properties.
Findings
Top quark mass measured with nearly 1% precision
Several hundred top-antitop decay events identified
Results inform Higgs boson property predictions
Abstract
First observed in 1995, the top quark is one of a pair of third-generation quarks in the Standard Model of particle physics. It has charge +2/3e and a mass of 171.4 GeV, about 40 times heavier than its partner, the bottom quark. The CDF and D0 collaborations have identified several hundred events containing the decays of top-antitop pairs in the large dataset collected at the Tevatron proton-antiproton collider over the last four years. They have used these events to measure the top quark's mass to nearly 1% precision and to study other top quark properties. The mass of the top quark is a fundamental parameter of the Standard Model, and knowledge of its value with small uncertainty allows us to predict properties of the as-yet-unobserved Higgs boson. This paper presents the status of the measurements of the top quark mass.
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