Interference contributions to gluon initiated heavy Higgs production in the Two-Higgs-Doublet Model

Understand

We discuss the production of a heavy neutral Higgs boson of a CP-conserving Two-Higgs-Doublet Model in gluon fusion and its decay into a four-fermion final state, $gg (\rightarrow VV) \rightarrow e^+e^-\mu^+\mu^-/e^+e^-\nu_l\bar\nu_l$.

• We investigate the interference contributions to invariant mass distributions of the four-fermion final state and other relevant kinematical observables.
• The relative importance of the different contributions is quantified for the process in the on-shell approximation, $gg\rightarrow ZZ$.
• We show that interferences of the heavy Higgs with the light Higgs boson and background contributions are essential for a correct description of the differential cross section.