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

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.9th International Workshop on the CKM Unitarity Triangle

Summary of the CKM 2016 working group on high-energy flavor physics

“…It is important to systematically account for these uncertainties [52,53] in a global fit, where associated cancellations can considerably weaken the bounds by orders of magnitude. See [55] for more details. For a concrete example leading to top quark FCNC transistions, see [56].…”