Performances of L1 Muons, Jets and MET Trigger in Run 3

Plots presented at https://cds.cern.ch/record/2853675?ln=en

Abstract

The performances of the CMS Level 1 Trigger (L1T) system to identify and select muons (μ), jets, and transverse energy sums is presented using the full dataset collected by CMS in 2022 at √s = 13.6 TeV corresponding to around 34 fb^-1 of integrated luminosity

Figures

Figure	Caption
png, pdf	L1T jet efficiency as a function of the offline jet , for two L1 thresholds. Low jets are observed to show a response below unity, resulting in a 50% efficiency for the GeV condition reached above the corresponding offline value. This feature is primarily due to the limited accuracy of the jet energy corrections derived on simulations.
png, pdf	L1T jet efficiency as a function of the offline jet , for two L1 thresholds, with an increased offline jet range. Low jets are observed to show a response below unity, resulting in a 50% efficiency for the GeV condition reached above the corresponding offline value. This feature is primarily due to the limited accuracy of the jet energy corrections derived on simulations.
png, pdf	L1T muon efficiency as a function of the offline muon , for two L1 thresholds, only highest quality muons are considered, in BMTF.
png, pdf	L1T muon efficiency as a function of the offline muon , for two L1 thresholds, only highest quality muons are considered, in BMTF, with an increased offline muon range . Very high momentum muons can initiate a shower in the muon detectors, leading to a small decrease of the Level 1 trigger efficiency (https://doi.org/10.1088%2F1748-0221%2F15%2F02%2Fp02027).
png, pdf	L1T muon efficiency as a function of the offline muon , for two L1 thresholds, only highest quality muons are considered, in OMTF.
png, pdf	L1T muon efficiency as a function of the offline muon , for two L1 thresholds, only highest quality muons are considered, in OMTF, with an increased offline muon range. Very high momentum muons can initiate a shower in the muon detectors, leading to a small decrease of the Level 1 trigger efficiency (https://doi.org/10.1088%2F1748-0221%2F15%2F02%2Fp02027).
png, pdf	L1T muon efficiency as a function of the offline muon , for two L1 thresholds, only highest quality muons are considered, in EMTF.
png, pdf	L1T muon efficiency as a function of the offline muon , for two L1 thresholds, only highest quality muons are considered, in EMTF, with an increased offline muon range.
png, pdf	ETMHF90 efficiency, fraction of events for which the magnitude of the vector sum of all TT is greater than 90 GeV, as a function of the offline transverse momentum of the event, removing the contribution from muons. In order to mitigate the impact of pile up collisions, low TT are excluded from the ETMHF TT sum. Moreover, jet-level energy corrections are not propagated. These two effects result in a sizeable shift of the ETMHF response with respect to the offline measurement of the missing transverse energy.
png, pdf	ETMHF90 efficiency, fraction of events for which the magnitude of the vector sum of all TT is greater than 90 GeV, as a function of the offline transverse momentum of the event, removing the contribution from muons, with an increased offline transverse momentum range.
png, pdf	HTT360er efficiency, fraction of events for which the scalar vector sum of all L1T jets with GeV and -2.5 < η < 2.5 is greater than 360 GeV, as a function of the offline central hadronic transverse activity, not including jets matched to muons. Unlike in the TTs for ETMHF, the L1T jets are calibrated, and the turn on for HTT360er occures near 360 GeV.
png, pdf	HTT360er efficiency, fraction of events for which the scalar vector sum of all L1T jets with GeV and -2.5 < η < 2.5 is greater than 360 GeV, as a function of the offline central hadronic transverse activity, not including jets matched to muons, with an increased offline hadronic transverse activity range.

-- HuguesEvard - 2023-03-28