High- and low-energy constraints on top-Higgs couplings

TL;DR

This paper investigates constraints on top-Higgs interactions from collider, flavor, and electric dipole moment experiments, providing competitive bounds and exploring effects of multiple interactions at new physics scales.

Contribution

It offers a comprehensive analysis of chirality-flipping top-Higgs couplings within the effective field theory framework, including multi-coupling scenarios.

Findings

Strong indirect constraints from flavor and EDM experiments.

Competitive bounds from collider observables when analyzing single couplings.

Impacts of multiple top-Higgs interactions at the new physics scale.

Abstract

We study the five chirality-flipping interactions that appear in the top-Higgs sector at leading order in the standard model effective field theory. We consider constraints from collider observables, flavor physics, and electric-dipole-moment experiments. This analysis results in very competitive constraints from indirect observables when one considers a single coupling at a time. In addition, we discuss how these limits are affected in scenarios in which multiple top-Higgs interactions are generated at the scale of new physics.