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CMS Detector Performance Summaries

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2025-05-13
15:44
Output rates and bandwidth of the High-Level Trigger in the 2023 and 2024 proton-proton runs /CMS Collaboration
This note presents selected results on the output rates and bandwidth of the CMS High-Level Trigger (HLT) during the 2023 and 2024 proton-proton (pp) runs at s=13.6 TeV..
CMS-DP-2025-015; CERN-CMS-DP-2025-015.- Geneva : CERN, 2025 - 25 p. Fulltext: PDF;

Detaljnije
2025-05-13
15:43
Performance of Muon Reconstruction in the CMS High Level Trigger using pp Collision data at s=13.6 TeV in 2024 /CMS Collaboration
This note presents muon-trigger efficiencies measured with data collected in 2024 corresponding to an integrated luminosity of 109 fb−1, including a comparison to the performance observed in 2023 data..
CMS-DP-2025-014; CERN-CMS-DP-2025-014.- Geneva : CERN, 2025 - 20 p. Fulltext: PDF;

Detaljnije
2025-05-06
15:50
Performance of jet b-tagging in the CMS High-Level Trigger in 2024 /CMS Collaboration
This note presents measurements of the efficiency of the identification of b-flavor jets in the High-Level Trigger during the 2024 pp data-taking period..
CMS-DP-2025-013; CERN-CMS-DP-2025-013.- Geneva : CERN, 2025 - 12 p. Fulltext: PDF;

Detaljnije
2025-04-28
10:51
Efficiencies of New Low-pT Lepton+HT+b-tag Triggers for Run-3 /CMS Collaboration
This note presents the performance of new lepton + HT + b-tag cross triggers introduced in 2024 in order to improve the trigger acceptance for HH→bb¯WW∗ events with low-pT leptons (electrons or muons)..
CMS-DP-2025-012; CERN-CMS-DP-2025-012.- Geneva : CERN, 2025 - 10 p.

Detaljnije
2025-04-07
15:50
RPC Link Board Multi-Gigabit Transceiver Test /CMS Collaboration
This study presents the results from the RPC Link Board Multi-Gigabit Transceiver test..
CMS-DP-2025-011; CERN-CMS-DP-2025-011.- Geneva : CERN, 2025 - 7 p. Fulltext: PDF;

Detaljnije
2025-04-07
15:50
Calibration of the top and W jet tagging efficiency in 13 TeV data collected by the CMS experiment in 2016--2018 /CMS Collaboration
This note presents a collection of efficiency correction factors, to be applied to simulation, for jet tagging algorithms designed for the identification of hadronically decaying top quarks or W bosons. These scale factors are calculated from and valid for the proton--proton collision data set at s=13\,TeV of the 2016, 2017, and 2018 data-taking eras of the CMS experiment, using the legacy data reconstruction and calibration, corresponding to a total integrated luminosity of 138\,fb−1. [...]
CMS-DP-2025-010; CERN-CMS-DP-2025-010.- Geneva : CERN, 2025 - 28 p. Fulltext: PDF;

Detaljnije
2025-03-10
17:28
Performance of the ParticleNet b and bb-tagging algorithms in the CMS High-Level Trigger in Run 3 /CMS Collaboration
Dedicated ParticleNet AK4 b-tagging and AK8 bb-tagging algorithms, based on graph neural networks (GNN), for the jets reconstructed at the High-Level Trigger (HLT) were trained for the very first time in 2022 using simulated events. New triggers were developed based on these algorithms that have been integrated into the CMS HLT menu since the start of Run 3 data-taking. [...]
CMS-DP-2025-009; CERN-CMS-DP-2025-009.- Geneva : CERN, 2025 - 12 p. Fulltext: PDF;

Detaljnije
2025-02-17
14:48
Bunch crossing identification studies for the CMS muon barrel local trigger
The CMS barrel muon chambers individually produce trigger primitives (TP) to be fed in the Barrel Muon Track Finder (BMTF) for Level 1 triggering. These TPs are mainly built up out of the space (position, direction) and time information provided by the Drift Tubes (DT). [...]
CMS-DP-2025-008; CERN-CMS-DP-2025-008.- Geneva : CERN, 2025 - 15 p. Fulltext: PDF;

Detaljnije
2025-02-10
16:54
Performance of missing-energy triggers in 2022, 2023 and 2024 /CMS Collaboration
This note presents the performance of triggers based on missing-transverse energy using pp-collisions data collected by the CMS experiment in 2022, 2023 and 2024..
CMS-DP-2025-007; CERN-CMS-DP-2025-007.- Geneva : CERN, 2025 - 20 p. Fulltext: PDF;

Detaljnije
2025-02-10
16:54
Pixel Detector Performance in Run 3 (December 2024) /CMS Collaboration
The Large Hadron Collider (LHC) continued delivering proton-proton collisions in 2024 as part of the LHC Run 3 that started in 2022. The collisions are produced at the centre-of-mass energy of 13.6 TeV. [...]
CMS-DP-2025-006; CERN-CMS-DP-2025-006.- Geneva : CERN, 2025 - 34 p. Fulltext: PDF;

Detaljnije