"Figure 6i" of "Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

Distribution of the VLQ score in single-lepton category 10. Observed data is shown using black markers, $T\overline{T}$ signal with mass of 1.2 (1.5) TeV in the singlet scenario using solid (dashed) lines, and post-fit background using filled histograms. Statistical and systematic uncertainties in the background prediction after performing the fit to data are shown by the hatched region. Electron and muon categories have been combined with their uncertainties added in quadrature.

单轻子类别10中的类矢量夸克（Vector-Like Quark，VLQ）得分分布。观测数据以黑色标记点呈现；单态情景下质量为1.2（1.5）TeV的顶夸克-反顶夸克对（$Toverline{T}$）信号分别以实线（虚线）表示，拟合后的本底则以填充直方图展示。对数据完成拟合后，本底预测的统计与系统不确定度由阴影区域标注。电子与缪子轻子类别已完成合并，其不确定度采用平方和开根号的方式叠加。