Measurements of associated $\textrm{t}\overline{\textrm{t}}\textrm{X}$

TL;DR

This paper reviews recent high-precision measurements of top-antitop associated production processes at the ATLAS and CMS experiments, including cross sections and searches for rare processes, advancing understanding of top quark interactions.

Contribution

It presents recent measurements of $ extrm{t}ar{ extrm{t}}$-associated processes and evidence for four-top-quark production, highlighting experimental progress in top physics.

Findings

Precise measurements of $ extrm{t}ar{ extrm{t}} extrm{X}$ cross sections.

Evidence for $ extrm{t}ar{ extrm{t}} extrm{t}ar{ extrm{t}}$ production.

Enhanced understanding of top quark interactions.

Abstract

Inclusive and differential cross section measurements of $\textrm{t}\overline{\textrm{t}}$-associated processes are performed at the ATLAS and CMS Collaborations with high precision. In this contribution, a selection of recent measurements of inclusive and differential measurements of the $\textrm{t}\overline{\textrm{t}}\gamma$, $\textrm{t}\overline{\textrm{t}}\textrm{Z}$ and $\textrm{t}\overline{\textrm{t}}\textrm{W}$ processes are presented. Searches for $\textrm{t}\overline{\textrm{t}}\textrm{t}\overline{\textrm{t}}$ production are presented for both collaborations, providing evidence for the process.