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CMS Detector Performance Summaries

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2018-03-01
10:12
Emittance scans for CMS luminosity calibration in 2017 /CMS Collaboration
Emittance scans are short van der Meer type scans performed at the beginning and at the end of LHC fills. The beams are scanned against each other in X and Y planes in 7 displacement steps. [...]
CMS-DP-2018-011; CERN-CMS-DP-2018-011.- Geneva : CERN, 2018 - 18 p. Fulltext: PDF;

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2018-03-01
10:12
2017 Tau Trigger Efficiencies /CMS Collaboration
Triggers selecting events with hadronically decaying $\tau$ leptons ($\tau_h$) are used in a wide variety of CMS analyses, in particular those targeting processes with a $H \rightarrow \tau\tau$ decay. The performance of the $\tau_h$ triggers is presented for data collected in 2017, corresponding to an integrated luminosity of 41.5\,fb$^{-1}$ at 13 TeV, and compared with simulation..
CMS-DP-2018-009; CERN-CMS-DP-2018-009.- Geneva : CERN, 2018 - 15 p. Fulltext: PDF;

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2018-03-01
10:12
Level-1 muon trigger performance with the full 2017 dataset /CMS Collaboration
This document describes the performance of the CMS Level-1 Muon Trigger with the full dataset of 2017. Efficiency plots are included for each track finder (TF) individually and for the system as a whole. [...]
CMS-DP-2018-008; CERN-CMS-DP-2018-008.- Geneva : CERN, 2018 - 15 p. Fulltext: PDF;

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2018-02-23
10:31
The inclusion of RPC only segments in the Barrel Muon Track Finder /CMS Collaboration
On November 3, 2017 during the LHC fill 6360 and from the run number 306121 RPC-only segments were enable to trigger. In this document we show the impact of the RPC-only segments in the Barrel Muon Track Finder efficiency performance. [...]
CMS-DP-2018-007; CERN-CMS-DP-2018-007.- Geneva : CERN, 2018 - 8 p. Fulltext: PDF;

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2018-02-23
10:31
Level-1 $\tau$ trigger performance in 2017 data /CMS Collaboration
In 2017, the LHC achieved an instantaneous luminosity of 2.06x10$^{34}$cm$^{-2}$s$^{-1}$, and a peak average pile-up of more than 50. This document describes the performance of the CMS Level-1 calorimeter trigger for $\tau$ leptons using 40.9 fb$^{-1}$ of 2017 data. [...]
CMS-DP-2018-006; CERN-CMS-DP-2018-006.- Geneva : CERN, 2018 - 16 p. Fulltext: PDF;

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2018-02-23
10:31
Selecting VBF Higgs in the Level-1 Trigger at CMS /CMS Collaboration
The VBF trigger strategy is described and its performance on benchmark physics signals is shown. The performance of the seed implemented in the trigger menu for the 2017 data taking are assessed..
CMS-DP-2018-005; CERN-CMS-DP-2018-005.- Geneva : CERN, 2018 - 11 p. Fulltext: PDF;

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2018-02-23
10:31
Level-1 jets and energy sums trigger performance with full 2017 dataset /CMS Collaboration
After the first long shutdown, the LHC restarted at a centre-of-mass energy of 13 TeV. In 2017, the LHC achieved an instantaneous luminosity of $2\times10^{34}cm^{-2}s^{-1}$ with an average peak number of pile-up interactions of over 50. [...]
CMS-DP-2018-004; CERN-CMS-DP-2018-004.- Geneva : CERN, 2018 - 9 p. Fulltext: PDF;

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2018-02-23
10:31
Level-1 E/Gamma performance on 2017 data /CMS Collaboration
In $2017$, the LHC achieved an instantaneous luminosity of $2\times10^{34}cm^{-2}s^{-1}$ with an average peak number of pile-up interactions of over $50$. This document includes studies of the performance of the CMS Level-1 Calorimeter Trigger for electrons and photons. [...]
CMS-DP-2018-003; CERN-CMS-DP-2018-003.- Geneva : CERN, 2018 - 16 p. Fulltext: PDF;

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2018-02-23
10:31
Dimuon Level-1 invariant mass in 2017 data /CMS Collaboration
This document shows the Level-1 (L1) dimuon invariant mass with and without L1 muon track extrapolation to the collision vertex and how it compares with the offline reconstructed dimuon invariant mass. The plots are made with the data sample collected in 2017. [...]
CMS-DP-2018-002; CERN-CMS-DP-2018-002.- Geneva : CERN, 2018 - 13 p. Fulltext: PDF;

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2018-02-23
10:31
RPC Detector Performance Results for 2016 and 2017 /CMS Collaboration
This note presents the summary of the RPC detector performance during 2017 and the comparison with 2016. A part of the performance results have been obtained with the tracker tracks extrapolation method, explained here. [...]
CMS-DP-2018-001; CERN-CMS-DP-2018-001.- Geneva : CERN, 2018 - 41 p. Fulltext: PDF;

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