"Figure 10 (upper): Unrolled 2D $m_{A}$ distribution" 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"

The 2D $m_A$ spectra in the final signal region. The unrolled 2D $m_A$ distribution made by scanning along bins of increasing $m_{A2}$ at fixed $m_{A1}$ before incrementing in $m_{A1}$. Only the bins in the $m_{A}$-SR region are included, with the x-axis corresponding to the unrolled bin index of the selected bins, listed sequentially. The data distributions (black points) are plotted against the total predicted background distributions (blue curves) after fitting to the data. The statistical plus systematic uncertainties in the background distribution are plotted as the blue band. The corresponding distributions of simulated $\mathrm{H} \to \mathcal{A} \mathcal{A} \to 4 \gamma$ events for $m_A = $3 (purple curve), 10 (gray curve), and 15 GeV (orange curve) are also overlaid on top. They are each normalized to the value of the expected upper limit to the signal cross section times 50. The lower panels of each plot show the ratio of the observed data over the predicted background as the black points, with the error bars representing the statistical uncertainties in the former. The ratio of the statistical plus systematic uncertainties in the background over the background prediction is shown as the blue band.