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

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