"17.a. Displaced jet HLT $p_{T}$ > 40 GeV efficiency" of "Strategy and performance of the CMS long-lived particle trigger program in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV"

The HLT efficiency of the main displaced-jet trigger: Efficiency of an offline calorimeter jet to pass the online $\mathrm{p_T}$ requirement in the displaced-jet triggers. In the this plot, the HLT calorimeter jets must have $\mathrm{p_T}>40$ GeV. The efficiency is shown for data collected in 2022 (green squares), in 2023 before an update of the HCAL gains and energy response corrections (black filled circles), and in 2023 after the update (blue open circles). The efficiencies measured with QCD multijet simulations are also shown, for 2022 (red triangles) and 2023 (purple triangles) conditions. These measurements are performed using events collected with a prescaled trigger that requires $\mathrm{H_T} >425$ GeV at the HLT. An offline $\mathrm{H_T} >450$ GeV selection is also applied to ensure the prescaled trigger reaches its plateau. The efficiency is $> 96\%$ when the offline jet has $\mathrm{p_T}>40$ GeV. The efficiency threshold is lower for the later 2023 data following updates to the HCAL energy corrections and readout gains, although the $\mathrm{p_T}$ value at the start of the plateau is unchanged.