"Figure A1 left" of "Search for long-lived particles decaying to a pair of muons in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

Overall signal efficiencies as a function of $c\tau$ for the $\Phi \rightarrow XX \rightarrow \mu\mu + anything$ signal process with $m(\Phi) = 125\ GeV$ and $m(X) = 20\ GeV$. The plot shows efficiencies of the three dimuon categories, STA-STA (green), TMS-TMS (red), and STA-TMS (blue), as well as the combined efficiency (black). Each efficiency is computed as the ratio of the number of simulated signal events in which at least one dimuon candidate of a given type (or any type for the combined efficiency) passes all selection criteria (including the trigger) to the total number of simulated signal events. All efficiencies are corrected by the data-to-simulation scale factors described in the paper. The efficiencies in the 2016 and 2018 data sets are shown as dashed and solid curves, respectively.

m(Φ)=125 GeV且m(X)=20 GeV的Φ→XX→μμ+任意产物信号过程中，总信号效率随cτ的变化关系。该图展示了三种双μ子（dimuon）类别的效率：STA-STA（绿色）、TMS-TMS（红色）和STA-TMS（蓝色），以及组合效率（黑色）。每种效率的计算方式为：模拟信号事件中，至少有一个给定类型（对于组合效率则为任意类型）的双μ子候选者通过所有选择标准（包括触发器）的事件数与总模拟信号事件数的比率。所有效率均通过论文中描述的数据与模拟比例因子进行校正。2016年和2018年数据集的效率分别以虚线和实线表示。