Electron trigger performance in CMS with the full 2017 data sample (CMS-DP-2018/030)


Trigger performance in 2017 and comparison with 2016 data

  • HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL : standard double electron trigger with loose ID and isolation requirements
  • Pixel match filter efficiency of HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL in 2017, comparison with Monte Carlo
  • HLT_Ele32_WPTight_Gsf : standard single electron trigger with tight ID + isolation
  • HLT_Double Ele33_CaloIdL_MW : double electron trigger with loose ID, no isolation, but with "medium" window pixel matching.


    HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL

    Ele23_Et_EB.pdf Ele23_Et_EE.png Ele23 leg efficiency of HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL path as a function of SC ET
    The efficiency for the Ele23 leg of the HLT_Ele23_Ele12 trigger as a function of supercluster (SC) EΤ for ECAL barrel (left) and ECAL endcap (right) presented for 2016 and 2017 data. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV in 2017 which effectively removes L1 turn on effects from the measured efficiency.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 8.53 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 24.83 Hz. We see 70% rate reduction in 2017 with the new pixel detector for a small (1-2%) loss in efficiency.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber

    Ele23_Eta.png Ele23 leg efficiency of HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL path as a function of SC eta
    The efficiency for the Ele23 leg of the HLT_Ele23_Ele12 trigger as a function of supercluster (SC) η (with SC ET > 50 GeV) presented for 2016 and 2017 data. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 8.53 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 24.83 Hz. We see 70% rate reduction in 2017 with the new pixel detector for a small (1-2%) loss in efficiency.
    [Get pdf version]
    Contact: Bhawna Gomber

    Ele23_Nvtx_EB.png Ele23_Nvtx_EE.png Ele23 leg efficiency of HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL path as a function of number of vertices
    The efficiency for the Ele23 leg of the HLT_Ele23_Ele12 trigger as a function of the number of offline vertices (with SC ET > 50 GeV, SC abs(η) < 2.5) for ECAL barrel (left) and ECAL endcap (right) presented for 2016 and 2017 data. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 8.53 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 24.83 Hz. We see 70% rate reduction in 2017 with the new pixel detector for a small (1-2%) loss in efficiency.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber



    Pixel match filter efficiency of HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL

    PixelMatch_Et_EB.png PixelMatch_Et_EE.png Efficiency of the pixel match filter for HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL path as a function of SC ET
    The efficiency of the pixel match filter (where we require supercluster to have 3 matching hits in the pixel detector) for the Ele23 leg of the HLT_Ele23_Ele12 trigger as a function of supercluster EΤ for ECAL barrel (left) and ECAL endcap (right) presented for 2017 data and MC.
    Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    DCDC converters that provide LV (VA/VD) for pixel detector modules start failing on October 5, 2017.
    The efficiency is shown for different pixel detector conditions, commissioning period (run<=302026), Nominal WP Pre Oct 5th (302026 <run<304366), and Nominal WP Post Oct 5th (run>=304366). By comparing periods with and without the DCDC issue, the effect on the Egamma trigger performance is estimated to be a few percent, ~1-2%.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber

    PixelMatch_Eta.png Efficiency of the pixel match filter for HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL path as a function of SC eta
    The efficiency of the pixel match filter (where we require supercluster to have 3 matching hits in the pixel detector) for the Ele23 leg of the HLT_Ele23_Ele12 trigger as a function of supercluster η (with SC ET > 50 GeV) presented for 2017 data and MC. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    DCDC converters that provide LV (VA/VD) for pixel detector modules start failing on October 5, 2017.
    The efficiency is shown for different pixel detector conditions, commissioning period (run<=302026), Nominal WP Pre Oct 5th (302026 <run<304366), and Nominal WP Post Oct 5th (run>=304366). By comparing periods with and without the DCDC issue, the effect on the Egamma trigger performance is estimated to be a few percent, ~1-2%.
    [Get pdf version]
    Contact: Bhawna Gomber

    PixelMatch_Nvtx_EB.png PixelMatch_Nvtx_EE.png Efficiency of the pixel match filter for HLT_Ele23_Ele12_CaloIDL_TrackIdL_IsoVL path as a function of number of vertices
    The efficiency of the pixel match filter (where we require supercluster to have 3 matching hits in the pixel detector) for the Ele23 leg of the HLT_Ele23_Ele12 trigger as a function of the number of offline vertices (with SC ET > 50 GeV, SC abs(η) < 2.5) for ECAL barrel (left) and ECAL endcap (right) presented for 2017 data and MC. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    DCDC converters that provide LV (VA/VD) for pixel detector modules start failing on October 5, 2017.
    The efficiency is shown for different pixel detector conditions, commissioning period (run<=302026), Nominal WP Pre Oct 5th (302026 <run<304366), and Nominal WP Post Oct 5th (run>=304366).
    By comparing periods with and without the DCDC issue, the effect on the Egamma trigger performance is estimated to be a few percent, ~1-2%.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber



    HLT_Ele32_WPTight_Gsf

    Et_EB.png Et_EE.png Efficiency of HLT_Ele32_WPTight path as a function of SC ET
    The efficiency of HLT_Ele32_WPTight_Gsf trigger as a function of supercluster EΤ for ECAL barrel (left) and ECAL endcap (right) presented for 2016H and 2017D data.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 62.87 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 59.78 Hz. We see improvement in efficiency in the ecal endcap with the new Egamma working point which resulted in no change in trigger rate.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber

    Eta.png Efficiency of HLT_Ele32_WPTight path as a function of SC eta
    The efficiency of HLT_Ele32_WPTight_Gsf trigger as a function of supercluster eta; (with SC ET > 50 GeV) presented for 2016H and 2017D data.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 62.87 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 59.78 Hz. We see improvement in efficiency in the ecal endcap with the new Egamma working point which resulted in no change in trigger rate.
    [Get pdf version]
    Contact: Bhawna Gomber

    Nvtx_EB.png Nvtx_EE.png Efficiency of HLT_Ele32_WPTight path as a function of SC number of vertices
    The efficiency of HLT_Ele32_WPTight_Gsf trigger as a function of the number of offline vertices (with SC ET > 50 GeV, SC abs(η) < 2.5) for ECAL barrel (left) and ECAL endcap (right) presented for 2016H and 2017D data.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 62.87 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 59.78 Hz. We see improvement in efficiency in the ecal endcap with the new Egamma working point which resulted in no change in trigger rate.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber



    HLT_Double Ele33_CaloIdL_MW

    Seeded_Et_EB.png Seeded_Et_EE.png Efficiency of HLT_DoubleEle33_CaloID_MW path as a function of SC ET
    The efficiency for the seeded leg of the HLT_DoubleEle33_CaloIdL_MW trigger as a function of supercluster EΤ for ECAL barrel (left) and ECAL endcap (right) presented for 2016 and 2017 data. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 4.59 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 8.57 Hz. We see 50% rate reduction in 2017 with the new pixel detector for the small (1-2%) loss in efficiency.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber

    Seeded_Eta.png Efficiency of HLT_DoubleEle33_CaloID_MW path as a function of SC eta
    The efficiency for the seeded leg of the HLT_DoubleEle33_CaloIdL_MW as a function of supercluster η (with SC ET > 50 GeV) presented for 2016 and 2017 data. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 4.59 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 8.57 Hz. We see 50% rate reduction in 2017 with the new pixel detector for the small (1-2%) loss in efficiency.
    [Get pdf version
    Contact: Bhawna Gomber

    Seeded_Nvtx_EB.png Seeded_Nvtx_EE.png Efficiency of HLT_DoubleEle33_CaloID_MW path as a function of number of vertices
    The efficiency for the seeded leg of the HLT_DoubleEle33_CaloIdL_MW as a function of the number of offline vertices (with SC ET > 50 GeV, SC abs(η) < 2.5) for ECAL barrel (left) and ECAL endcap (right) presented for 2016 and 2017 data. Due to the presence of a high pT electron in the event, the L1 threshold on the second electron is lowered to 5 GeV which effectively removes L1 turn on effects from the measured efficiency.
    The rate of the trigger in 2017, corresponding to Run Number 302596 (Average pileup=38) is 4.59 Hz, whereas in 2016 corresponding to Run Number 283885 (Average pileup =43), is 8.57 Hz. We see 50% rate reduction in 2017 with the new pixel detector for the small (1-2%) loss in efficiency.
    [Get pdf version EB] [Get pdf version EE]
    Contact: Bhawna Gomber

    -- ElisabettaGallo - 2018-07-08

  • Topic attachments
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    PDFpdf Ele23_Et_EB.pdf r1 manage 18.3 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Ele23_Et_EB.png r1 manage 24.4 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Ele23_Et_EE.pdf r1 manage 18.2 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Ele23_Et_EE.png r1 manage 25.1 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Ele23_Eta.pdf r1 manage 18.4 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Ele23_Eta.png r1 manage 23.7 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Ele23_Nvtx_EB.pdf r1 manage 20.8 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Ele23_Nvtx_EB.png r1 manage 27.4 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Ele23_Nvtx_EE.pdf r1 manage 20.5 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Ele23_Nvtx_EE.png r1 manage 27.2 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Et_EB.pdf r1 manage 17.9 K 2018-07-08 - 17:11 ElisabettaGallo  
    PNGpng Et_EB.png r1 manage 24.1 K 2018-07-13 - 20:18 ElisabettaGallo  
    PDFpdf Et_EE.pdf r1 manage 18.6 K 2018-07-08 - 17:11 ElisabettaGallo  
    PNGpng Et_EE.png r1 manage 24.9 K 2018-07-13 - 20:18 ElisabettaGallo  
    PDFpdf Eta.pdf r1 manage 18.8 K 2018-07-08 - 17:11 ElisabettaGallo  
    PNGpng Eta.png r1 manage 23.6 K 2018-07-13 - 20:18 ElisabettaGallo  
    PDFpdf Nvtx_EB.pdf r1 manage 20.2 K 2018-07-08 - 17:11 ElisabettaGallo  
    PNGpng Nvtx_EB.png r1 manage 27.0 K 2018-07-13 - 20:18 ElisabettaGallo  
    PDFpdf Nvtx_EE.pdf r1 manage 20.2 K 2018-07-08 - 17:11 ElisabettaGallo  
    PNGpng Nvtx_EE.png r1 manage 27.4 K 2018-07-13 - 20:18 ElisabettaGallo  
    PDFpdf PixelMatch_Et_EB.pdf r1 manage 26.1 K 2018-07-08 - 17:11 ElisabettaGallo  
    PNGpng PixelMatch_Et_EB.png r1 manage 34.7 K 2018-07-13 - 20:18 ElisabettaGallo  
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    PNGpng PixelMatch_Et_EE.png r1 manage 35.6 K 2018-07-13 - 20:18 ElisabettaGallo  
    PDFpdf PixelMatch_Eta.pdf r1 manage 23.1 K 2018-07-08 - 17:11 ElisabettaGallo  
    PNGpng PixelMatch_Eta.png r1 manage 30.8 K 2018-07-13 - 20:18 ElisabettaGallo  
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    PNGpng PixelMatch_Nvtx_EE.png r1 manage 32.1 K 2018-07-13 - 20:18 ElisabettaGallo  
    PDFpdf Seeded_Et_EB.pdf r1 manage 18.1 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Seeded_Et_EB.png r1 manage 23.1 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Seeded_Et_EE.pdf r1 manage 18.0 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Seeded_Et_EE.png r1 manage 23.8 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Seeded_Eta.pdf r1 manage 18.9 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Seeded_Eta.png r1 manage 23.6 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Seeded_Nvtx_EB.pdf r1 manage 20.9 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Seeded_Nvtx_EB.png r1 manage 26.6 K 2018-07-13 - 20:16 ElisabettaGallo  
    PDFpdf Seeded_Nvtx_EE.pdf r1 manage 20.6 K 2018-07-08 - 17:09 ElisabettaGallo  
    PNGpng Seeded_Nvtx_EE.png r1 manage 27.1 K 2018-07-13 - 20:16 ElisabettaGallo  
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