Measurement of the top quark properties in the production and decays of top anti-top pair events at CMS

TL;DR

This paper reports measurements of various top quark properties from CMS data, including charge asymmetry, spin correlation, CP violation, and associated production cross sections, comparing results with Standard Model and new physics predictions.

Contribution

It provides the first comprehensive set of measurements of top quark properties at multiple energies, testing the Standard Model and exploring potential new physics.

Findings

Measured top pair charge asymmetry consistent with Standard Model

Observed spin correlations aligning with theoretical predictions

Cross sections for top pair production with W/Z bosons match expectations

Abstract

Measurements of several top-quark properties obtained from CMS data collected at various centre-of-mass energies are presented. The results include measurements of the top pair charge asymmetry, $\textrm{t}\bar{\textrm{t}}$ spin correlation, CP violation and the cross section of $\textrm{t}\bar{\textrm{t}}$ events produced in association with a W or a Z boson. The results are compared with predictions from the standard model as well as new physics models.