"Signal Cutflow" of "Search for exotic Higgs boson decays H $\to$$\mathcal{AA}$ with $\mathcal{AA}$$\to$$γγ$ in events with a semi-merged topology in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

Relative cutflow fractions for representative signal samples, normalized to the number of events before any selection (All events = 1.0). The selections correspond to the trigger requirement, photon multiplicity and identification, kinematic requirements on the three-photon system, a selection on the angular separation (dR) of photons consistent with a merged topology, and a multivariate (MVA) discriminator and a charged-hadron isolation requirement applied to photon candidates used to suppress jet background. The final SR corresponds to the combination of the $m_H$ and $m_A$ signal regions used in the final fit.