Top pair production at a future $e^+e^-$ machine in a composite Higgs scenario

TL;DR

This paper explores how future electron-positron colliders can test new physics in the top-quark sector within a composite Higgs framework by analyzing deviations in top pair production across various energies.

Contribution

It provides a detailed analysis of potential deviations from the Standard Model in top pair production at future $e^+e^-$ colliders within a composite Higgs scenario.

Findings

Potential deviations in top pair production cross-sections.

Sensitivity to new physics at different collider energies.

Implications for understanding electroweak symmetry breaking.

Abstract

The top quark plays a central role in many New Physics scenarios and in understanding the details of Electro-Weak Symmetry Breaking. In the short- and mid-term future, top-quark studies will mainly be driven by the experiments at the Large Hadron Collider. Exploration of top quarks will, however, be an integral part of particle physics studies at any future facility and an $e^+ e^-$ collider will have a very comprehensive top-quark physics program. We discuss the possibilities of testing NP in the top-quark sector within a composite Higgs scenario through deviations from the Standard Model in top pair production for different Centre-of-Mass energy options of a future $e^+e^-$ machine. In particular, we focus on precision studies of the top-quark sector at a CM energy ranging from 370 GeV up to 3 TeV.