Measurements of the Properties of the Top Quark

TL;DR

This paper reviews recent experimental measurements of various top quark properties, including decay width, spin correlations, W boson helicity, colour flow, and production asymmetry, based on Tevatron collider data.

Contribution

It provides a comprehensive summary of the latest top quark property measurements from CDF and D0 collaborations, highlighting new experimental results and techniques.

Findings

Measured top quark decay width and spin correlations.

Analyzed W boson helicity in top decays.

Observed asymmetry in top-antitop production.

Abstract

We review recent measurements of the properties of the top quark: the decay width of the top quark, of spin correlations between the top and the antitop quarks in $\ttbar$ production, the $W$ boson helicity in top decays, the strong colour flow in $\ttbar$ events, and the asymmetry of $\ttbar$ production due to the strong colour charge. The measurements are performed on data samples of up to 5.4 \fb\ of integrated luminosity acquired by the CDF and D0 collaborations in Run II of the Fermilab Tevatron $p\bar p$ collider at a centre-of-mass energy of $\sqrt s=1.96 \TeV$.