Anomalous gamma-gamma-H and Z-gamma-H couplings in the process e,gamma->e,H

TL;DR

This paper investigates how the process eg->eh at future colliders can tightly constrain anomalous CP-even and CP-odd couplings in Higgs interactions with gluons and Z bosons, using a model-independent effective operator approach.

Contribution

It demonstrates that the process eg->eh is highly effective for constraining anomalous Higgs couplings in a model-independent framework at high energies.

Findings

Strong constraints on anomalous ggh and zgh couplings are achievable.

The process is sensitive to both CP-even and CP-odd contributions.

Effective bounds are derived for center-of-mass energies of 500 GeV and 1500 GeV.

Abstract

The bounds on the anomalous contributions to the ggh and zgh vertices that can be obtained via the process eg->eh are discussed through a model independent analysis based on SU(2) X U(1) invariant operators of dim=6. A light Higgs boson with m_H ~ 120 GeV and center-of-mass energies of \sqrt{S}=500 GeV and \sqrt{S}=1500 GeV are assumed. The process eg->eh is shown to provide an excellent way to strongly constraint both the CP-even and CP-odd anomalous contributions in the ggH and ZgH couplings.