"Fig. 2a" of "Search for massive, long-lived particles in events with displaced vertices and displaced muons in $pp$ collisions at $\sqrt{s}=13.6$ TeV with the ATLAS experiment"

Event-level trigger efficiency for the triggers used in this analysis. The plot shows separate curves for the MS-only triggers and the displaced-muon trigger, which exploits the dedicated large-impact-parameter track reconstruction introduced in the HLT in Run 3, and their combination. The efficiencies are evaluated as a function of the highest muon $p_{\mathrm{T}}$ in the event. The benchmark sample used here consists of higgsino pair-production events with $L$-violating $\lambda'_{211}$ decays ($m=150\,\text{GeV}$, $\tau=0.1\,\text{ns}$). For the MS-only triggers, the trigger plateau criteria are applied to the highest-$p_{\mathrm{T}}$ muon in the event (63 GeV for the $p_{\mathrm{T}} > 60\,\text{GeV}$, $|\eta| < 1.05$ trigger and 84 GeV for the $p_{\mathrm{T}} > 80\,\text{GeV}$, $|\eta| < 2.4$ trigger with additional requirement of three hits in precision tracking layers for $|\eta| > 1.05$). The muon $p_{\mathrm{T}}$ plot shows the combined trigger efficiency turn-on behaviour.