Top quark electroweak interactions

TL;DR

This paper explores how modifications in electroweak interactions involving the top quark can cause energy growth in scattering amplitudes, using effective field theory to understand unitarity issues and guide collider searches.

Contribution

It applies the Standard Model Effective Field Theory and Goldstone boson equivalence theorem to analyze energy growth in top quark electroweak interactions, highlighting potential collider signatures.

Findings

Energy growth in $2\to 2$ scattering amplitudes due to modified EW interactions.

Framework for constraining top quark electroweak couplings using EFT.

Potential collider signatures for new top quark electroweak effects.

Abstract

I discuss how modified EW interactions lead to energy growth in $2\to 2$ scattering amplitudes and how the framework of the Standard Model Effective Field Theory can be used in conjunction with the Goldstone boson equivalence theorem to better understand the origin of such unitarity violating behaviour. I quantify how applications in constraining top quark electroweak couplings are especially motivated due to our relatively poor understanding of them. I present some highlights of a systematic study of energy growth in EW top scattering amplitudes with a focus on how such effects can be searched for in realistic collider processes, demonstrating some promising avenues for future study.