Measurement of the Properties of the top Quark at D{\O}

TL;DR

This paper presents various measurements of the top quark's properties, including mass, width, helicity, spin correlations, and color flow, using data from the DØ detector at Fermilab.

Contribution

It provides comprehensive measurements of top quark properties with new analysis techniques and combined data from multiple channels at the Tevatron.

Findings

Top quark mass measured with high precision.

Constraints on the top quark width and decay properties.

Insights into W boson helicity and top quark spin correlations.

Abstract

Different measurements of the properties of the top quark using up to $5.4 fb^{-1}$ collected with the D{\O} detector at the Fermilab Tevatron collider are presented. The top mass is obtained from a study of dilepton and lepton+jets final states, while the width is obtained from a combination of the measurements of the single top production via t-channel exchange and the determination of the t \rightarrow Wb branching ratio. Furthermore the measurement of the helicity of the W boson from top quark decays, a measurement of $t\bar{t}$ spin correlations and a measurement of the jet pull (color flow) in $t\bar{t}$ events are presented.