CP sensitive observables of a hypothetical heavy spin-0 particle with $\gamma\gamma-$interactions dominant

TL;DR

This paper investigates observables sensitive to the tensor and CP structure of a hypothetical heavy spin-0 particle primarily interacting with photons, focusing on azimuthal angle differences in jet production to determine its CP properties.

Contribution

It introduces a novel approach to probe the CP nature of a hypothetical particle through azimuthal angle observables in photon-dominated production mechanisms.

Findings

Azimuthal angle difference between jets reveals CP properties.

Photon interactions dominate production, suppressing other channels.

Observable distinguishes CP-even and CP-odd scenarios.

Abstract

We study observables sensitive to tensor structure of interactions of a hypothetical heavy spin-0 particle. It is assumed that the interactions of this particle are primary with photons; interactions with vector bosons $gg$, $WW$, $ZZ$, and quarks $t\bar{t}$ are suppressed. The above assumptions favor the production of this hypothetical particle through the vector boson fusion mechanism structurally dominated by $\gamma \gamma$ and $\gamma Z$ interactions. This particle will be produced in association with two light quarks. It is shown that the difference in azimuthal angle between the tagging jets provides an observable sensitive to the CP properties of this hypothetical particle.