Boosting Higgs CP properties via VH Production at the Large Hadron Collider

TL;DR

This paper proposes a method to analyze the CP properties of the Higgs boson at the LHC by using jet substructure and angular observables in VH production, helping distinguish Standard Model predictions from new physics effects.

Contribution

It introduces a novel approach combining jet substructure and angular observables to probe the CP nature of the Higgs in VH production at the LHC.

Findings

Effective discrimination between SM and new physics tensor structures.

Potential to separately analyze CP mixing in HZZ and HWW vertices.

Enhanced sensitivity to higher-dimensional operators affecting Higgs interactions.

Abstract

We consider ZH and WH production at the Large Hadron Collider, where the Higgs decays to a bb pair. We use jet substructure techniques to reconstruct the Higgs boson and construct angular observables involving leptonic decay products of the vector bosons. These efficiently discriminate between the tensor structure of the HVV vertex expected in the Standard Model and that arising from possible new physics, as quantified by higher dimensional operators. This can then be used to examine the CP nature of the Higgs as well as CP mixing effects in the HZZ and HWW vertices separately.