MUON HLT performance with 2018 data ( CMS DP-2018/034)

On 15th May 2018, the muon reconstruction at high level trigger (HLT) was updated:

  • More seeds for the muon track building are generated to improve the efficiency.
  • One more iterative tracking is added to the muon tracking algorithm to improve the efficiency.
  • A simple ID on HLT muons is applied to keep high purity with lower rate.

    The trigger efficiencies are measured with the data collected in 2018 corresponding to an integrated luminosity of 11.8 fb-1

  • Before HLT muon update: 7.7 fb-1.
  • After HLT muon update: 4.1 fb-1.

    Efficiencies are estimated using Tag and Probe (T&P) method using Z→𝛍𝛍 events

  • Tag is an offline muon with pT > 29 GeV and abs(𝝶) < 2.4 passing a tight identification criteria ensuring the high purity.
  • Probe definition is different for each trigger efficiency.
  • Tag & probe invariant mass should be within [70, 130] GeV mass range.
  • The background events are subtracted by the fit on dimuon invariant mass distribution with Double Voigtian (signal) and Exponential (background) functions.

    Two kinds of the triggers will be presented

  • Isolated single muon trigger with pT > 24 GeV
  • Non-isolated single muon trigger with pT > 50 GeV

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of muon pT. The efficiency is estimated with respect to the offline muon passing tight identification and particle-flow based isolation requirements. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img547806760949ada8bc8f288d623e729c.png

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of muon 𝝶 . The efficiency is estimated with respect to the offline muon passing tight identification and particle-flow based isolation requirements with pT > 26 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. A small asymmetry is observed between the negative and positive endcaps. It is due to disabled muon chambers (CSC). The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imgfbdd42dd308f4baee4d2f3869d3f5b2d.png

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of muon 𝝓. The efficiency is estimated with respect to the offline muon passing tight identification and particle-flow based isolation requirements with pT > 26 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imgc2da99840903382afa8cb8f0d3913e57.png

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of the number of reconstructed vertices. The efficiency is estimated with respect to the offline muon passing tight identification and particle-flow based isolation requirements with pT > 26 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imga8c1314ca7133866ee5480d539e53df5.png

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of muon pT. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing ight identification and particle-flow based isolation requirements. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img6535d0869ef00cb62ce7d225f1f9b851.png

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of muon 𝝶. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing tight identification and particle-flow based isolation requirements with pT > 26 GeV. The data are split with respect tothe HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img6fb7329b05117e69841cceaf8850a91f.png

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of muon 𝝓. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing tight identification and particle-flow based isolation requirements with pT > 26 GeV. The data are split with respect tothe HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img1badd02edd949f051a9485d7d15f4e24.png

    Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring isolated single muon with pT > 24 GeV is shown as a function of the number of reconstructed vertices. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing tight identification and particle-flow based isolation requirements with pT > 26 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img95b7723a87641e53d506c090f72cb0ae.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring single muon with pT > 50 GeV is shown as a function of muon pT. The efficiency is estimated with respect to the offline muon passing identification optimized for high-pT muons and track based isolation requirements. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imgd6dcf59170b4fcaabac51771b10274a2.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring single muon with pT > 50 GeV is shown as a function of muon 𝝶. The efficiency is estimated with respect to the offline muon passing identification optimized for high-pT muons and track based isolation requirements with pT > 52 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. A small asymmetry is observed between the negative and positive endcaps. It is due to disabled muon chambers (CSC). The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imgc27a1ff28c292f356a5f668ab4fd6b97.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring single muon with pT > 50 GeV is shown as a function of muon 𝝓 . The efficiency is estimated with respect to the offline muon passing identification optimized for high-pT muons and track based isolation requirements with pT > 52 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img4e73f518e2d68076f6f8016cadde9ff4.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of combined L1 and high-level trigger requiring single muon with pT > 50 GeV is shown as a function of the number of reconstructed vertices. The efficiency is estimated with respect to the offline muon passing identification optimized for high-pT muons and track based isolation requirements with pT > 52 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imgb9b692186ae9a838e3f1e9631a3dc9ad.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring single muon with pT > 50 GeV is shown as a function of muon pT. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing identification optimized for high-pT muons and track based isolation requirements. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img06b19a7f08dcb71a250b6537dae621fa.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring single muon with pT > 50 GeV is shown as a function of muon 𝝶. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing identification optimized for high-pT muons and track based isolation requirements with pT > 52 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imga9e0cc21673123244ef2a0118ef5c9a7.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring single muon with pT > 50 GeV is shown as a function of muon 𝝓. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing identification optimized for high-pT muons and track based isolation requirements with pT > 52 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    imge2a34996832a88bb6559b3ecd04bb73e.png

    Non-Isolated Single 𝛍 Trigger Efficiency
    The efficiency of high-level trigger requiring single muon with pT > 50 GeV is shown as a function of the number of reconstructed vertices. The efficiency is estimated with respect to the offline muon matched to L1 trigger object with ΔR < 0.3 as well as passing identification optimized for high-pT muons and track based isolation requirements with pT > 52 GeV. The data are split with respect to the HLT muon reconstruction update deployed on 15/05/2018. The errors are statistical only.
    [Get pdf version]
    Contact: K.P. Lee
    img9efed67c5a6dc12c6b6474bddc347e0c.png

    -- ElisabettaGallo - 2018-07-03

  • Topic attachments
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    PDFpdf IsoMu24_over_L1_eta.pdf r1 manage 17.6 K 2018-07-06 - 18:08 ElisabettaGallo  
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    PDFpdf IsoMu24_over_offline_phi.pdf r1 manage 17.7 K 2018-07-06 - 18:08 ElisabettaGallo  
    PNGpng IsoMu24_over_offline_phi.png r1 manage 135.3 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf IsoMu24_over_offline_pt.pdf r1 manage 16.9 K 2018-07-06 - 18:08 ElisabettaGallo  
    PNGpng IsoMu24_over_offline_pt.png r1 manage 125.0 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf IsoMu24_over_offline_vtx.pdf r1 manage 21.3 K 2018-07-06 - 18:08 ElisabettaGallo  
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    PDFpdf Mu50_over_L1_eta.pdf r1 manage 17.6 K 2018-07-06 - 18:08 ElisabettaGallo  
    PNGpng Mu50_over_L1_eta.png r1 manage 131.3 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf Mu50_over_L1_phi.pdf r1 manage 17.7 K 2018-07-06 - 18:08 ElisabettaGallo  
    PNGpng Mu50_over_L1_phi.png r1 manage 133.3 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf Mu50_over_L1_pt.pdf r1 manage 16.4 K 2018-07-06 - 18:09 ElisabettaGallo  
    PNGpng Mu50_over_L1_pt.png r1 manage 120.2 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf Mu50_over_L1_vtx.pdf r1 manage 21.6 K 2018-07-06 - 18:09 ElisabettaGallo  
    PNGpng Mu50_over_L1_vtx.png r1 manage 160.9 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf Mu50_over_offline_eta.pdf r1 manage 17.6 K 2018-07-06 - 18:09 ElisabettaGallo  
    PNGpng Mu50_over_offline_eta.png r1 manage 133.1 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf Mu50_over_offline_phi.pdf r1 manage 17.7 K 2018-07-06 - 18:09 ElisabettaGallo  
    PNGpng Mu50_over_offline_phi.png r1 manage 135.3 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf Mu50_over_offline_pt.pdf r1 manage 16.5 K 2018-07-06 - 18:09 ElisabettaGallo  
    PNGpng Mu50_over_offline_pt.png r1 manage 122.9 K 2018-07-06 - 18:10 ElisabettaGallo  
    PDFpdf Mu50_over_offline_vtx.pdf r1 manage 22.1 K 2018-07-06 - 18:09 ElisabettaGallo  
    PNGpng Mu50_over_offline_vtx.png r1 manage 167.9 K 2018-07-06 - 18:10 ElisabettaGallo  
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