Performance of new electron ID

Complete: 3

Contacts

  • Matteo Sani
  • Jim Branson
  • Pascal Vanlaer
  • David Futyan
  • Roberto Salerno
  • Pedro Ribeiro

Instructions for CMSSW_1_6_7

scramv1 project CMSSW CMSSW_1_6_7
cd CMSSW_1_6_7/src/
eval `scramv1 runtime -csh`
project CMSSW

cvs co -r eID16X_5Dic          EgammaAnalysis/ElectronIDAlgos
cvs co -r eID16X_26Nov       EgammaAnalysis/ElectronIDProducers
cvs co                                   EgammaAnalysis/Examples
scramv1 b
   

Results

Z->ee (CMSSW_1_6_7) Final State : 2 electrons

  • dataset /RelValZEE/CMSSW_1_6_7-RelVal-1192895175/GEN-SIM-DIGI-RECO 5100 evts

Reconstruction and Identification efficiency as a function of Gen Electron pT

Reconstruction and Identification efficiency as a function of Gen Electron η

Reconstruction and Identification efficiency as a function of Gen Electron φ

Electron Purity as a function of Reco Electron pT and η

W->e nu_e (CMSSW_1_6_7) Final State : 1 electron + missing energy

  • dataset /RelValWE/CMSSW_1_6_7-RelVal-1192895175/GEN-SIM-DIGI-RECO 5000 evts

Reconstruction and Identification efficiency as a function of Gen Electron pT

Reconstruction and Identification efficiency as a function of Gen Electron η

Reconstruction and Identification efficiency as a function of Gen Electron φ

Electron Purity as a function of Reco Electron pT and η

Z'->ee (CMSSW_1_6_7) Z Prime mass = 1 TeV ; Final state : 2 very energetic electrons with ~ 360 GeV

  • dataset /RelValZPrimeEEM1000/CMSSW_1_6_7-RelVal-1192895175/GEN-SIM-DIGI-RECO 4400 evts

Reconstruction and Identification efficiency as a function of Gen Electron pT

Reconstruction and Identification efficiency as a function of Gen Electron η

Reconstruction and Identification efficiency as a function of Gen Electron φ

Electron Purity as a function of Reco Electron pT and η

Fraction of charge mismatched electrons

In the following plots it is shown the distribution of charged mismatched reco electrons, defined as # reco electrons which match gen electrons geometrically and correct charge divided by # reco electrons which match gen electrons geometrically, as function of gen electron pt, eta and phi. The dataset Z->ee, processed with CMSSW_1_6_7 was analyzed.

  • dataset /RelValZEE/CMSSW_1_6_7-RelVal-1192895175/GEN-SIM-DIGI-RECO 5100 evts

Zee_RecandIDMisCharge_Pt.gif
Zee_RecandIDMisCharge_Eta.gif
Zee_RecandIDMisCharge_Phi.gif

Reconstruction and Identification efficiency for well measured electrons

In the following plots it is shown the distribution for the efficiency of reconstruction and identification of well measured electrons, as function of gen electron pt, eta and phi. Well measured electrons are reconstructed electrons with eta and phi compatible with gen electrons, correct charge and (E_reco-E_gen)/E_gen < 8% (18%) for the ECAL barrel(endcap). The dataset Z->ee, processed with CMSSW_1_6_7 was analyzed.

  • dataset /RelValZEE/CMSSW_1_6_7-RelVal-1192895175/GEN-SIM-DIGI-RECO 5100 evts

Results for average electron efficiency and purity per electron

Efficiency

Efficiency Reconstruction Id robust Id loose Id tight Rec&Id robust Rec&Id loose Rec&Id tight
Z->ee 0.84 0.99 0.98 0.94 0.83 0.82 0.78
W->e vu_e 0.85 0.99 0.97 0.93 0.84 0.83 0.79
Z'->ee 0.82 0.99 0.97 0.94 0.82 0.80 0.78

Purity

Purity Reconstruction Id robust Id loose Id tight
Z->ee 0.88 0.91 0.94 0.95
W->e vu_e 0.82 0.89 0.94 0.95
Z'->ee 0.85 0.92 0.95 0.95

Electron fake rate from QCD jets

To estimate the electron fake rate from QCD jets, the following datasets were analyzed:

  • /QCD_Pt_20_30/CMSSW_1_5_2-CSA07-2049/GEN-SIM-DIGI-RECO
  • /QCD_Pt_30_50/CMSSW_1_5_2-CSA07-2049/GEN-SIM-DIGI-RECO
  • /QCD_Pt_50_80/CMSSW_1_5_2-CSA07-2049/GEN-SIM-DIGI-RECO
  • /QCD_Pt_80_120/CMSSW_1_5_2-CSA07-2049/GEN-SIM-DIGI-RECO

Jets reconstructed with Iterative Cone (size = 0.5) algorithm and eT > 10 GeV were considered. Jet corrections were not considered.

No electron isolation was applied

Reconstruction and Identification

Here the fake rate is defined as # reco jets that match a reconstructed and identified electron divided by # reco jets.

fakerate_div_pt.gif
fakerate_div_eta.gif

Identification only

Here the fake rate is defined as # identified electrons that match a reco jet divided by # reco electrons that match a reco jet.

fakerate_div_pt_rel.gif
fakerate_div_eta_rel.gif

Review Status

Editor/Reviewer and date Comments
PedroRibeiro - 13 Dec 2007 page author
JennyWilliams - 19 Dec 2007 moved page to SWGuide

Responsible: PedroRibeiro
Last reviewed by: never reviewed

Topic attachments
I Attachment History Action Size Date Who Comment
GIFgif WE_IDEne_Eta.gif r1 manage 7.8 K 2007-12-13 - 19:59 PedroRibeiro  
GIFgif WE_IDEne_PT.gif r1 manage 6.3 K 2007-12-13 - 19:57 PedroRibeiro  
GIFgif WE_IDEne_Phi.gif r1 manage 8.3 K 2007-12-13 - 20:13 PedroRibeiro  
GIFgif WE_IdEta.gif r2 r1 manage 9.9 K 2008-01-03 - 15:16 PedroRibeiro  
GIFgif WE_IdPhi.gif r2 r1 manage 10.4 K 2008-01-03 - 15:16 PedroRibeiro  
GIFgif WE_IdPt.gif r2 r1 manage 7.7 K 2008-01-03 - 15:17 PedroRibeiro  
GIFgif WE_PurEta.gif r2 r1 manage 12.2 K 2008-01-03 - 15:23 PedroRibeiro  
GIFgif WE_PurPhi.gif r2 r1 manage 14.0 K 2008-01-03 - 15:23 PedroRibeiro  
GIFgif WE_PurPt.gif r2 r1 manage 8.2 K 2008-01-03 - 15:24 PedroRibeiro  
GIFgif WE_RecAndIdEta.gif r2 r1 manage 12.6 K 2008-01-03 - 15:24 PedroRibeiro  
GIFgif WE_RecAndIdPT.gif r2 r1 manage 9.2 K 2008-01-03 - 15:25 PedroRibeiro  
GIFgif WE_RecAndIdPhi.gif r2 r1 manage 14.0 K 2008-01-03 - 15:25 PedroRibeiro  
GIFgif Zee_IDEne_Eta.gif r2 r1 manage 9.1 K 2008-01-03 - 19:35 PedroRibeiro  
GIFgif Zee_IDEne_PT.gif r2 r1 manage 7.5 K 2008-01-03 - 19:36 PedroRibeiro  
GIFgif Zee_IDEne_Phi.gif r2 r1 manage 9.5 K 2008-01-03 - 19:36 PedroRibeiro  
GIFgif Zee_IdEta.gif r2 r1 manage 9.4 K 2008-01-03 - 15:42 PedroRibeiro  
GIFgif Zee_IdPhi.gif r2 r1 manage 9.9 K 2008-01-03 - 15:43 PedroRibeiro  
GIFgif Zee_IdPt.gif r2 r1 manage 7.5 K 2008-01-03 - 15:43 PedroRibeiro  
GIFgif Zee_Nelectrons.gif r1 manage 5.6 K 2007-12-13 - 20:02 PedroRibeiro  
GIFgif Zee_PurEta.gif r2 r1 manage 10.8 K 2008-01-03 - 15:44 PedroRibeiro  
GIFgif Zee_PurPhi.gif r2 r1 manage 11.6 K 2008-01-03 - 15:45 PedroRibeiro  
GIFgif Zee_PurPt.gif r2 r1 manage 8.1 K 2008-01-03 - 15:46 PedroRibeiro  
GIFgif Zee_RecAndIdEta.gif r2 r1 manage 11.8 K 2008-01-03 - 19:33 PedroRibeiro  
GIFgif Zee_RecAndIdPT.gif r2 r1 manage 9.0 K 2008-01-03 - 19:34 PedroRibeiro  
GIFgif Zee_RecAndIdPhi.gif r2 r1 manage 12.6 K 2008-01-03 - 19:34 PedroRibeiro  
GIFgif Zee_RecandIDEne_Eta.gif r2 r1 manage 10.9 K 2008-01-03 - 19:37 PedroRibeiro  
GIFgif Zee_RecandIDEne_PT.gif r2 r1 manage 8.4 K 2008-01-03 - 19:38 PedroRibeiro  
GIFgif Zee_RecandIDEne_Phi.gif r2 r1 manage 13.5 K 2008-01-03 - 19:38 PedroRibeiro  
GIFgif Zee_RecandIDMisCharge_Eta.gif r2 r1 manage 13.1 K 2008-01-03 - 19:39 PedroRibeiro  
GIFgif Zee_RecandIDMisCharge_Phi.gif r2 r1 manage 14.4 K 2008-01-03 - 19:40 PedroRibeiro  
GIFgif Zee_RecandIDMisCharge_Pt.gif r2 r1 manage 8.8 K 2008-01-03 - 19:40 PedroRibeiro  
GIFgif Zprime_IdEta.gif r2 r1 manage 9.4 K 2008-01-03 - 15:28 PedroRibeiro  
GIFgif Zprime_IdPhi.gif r2 r1 manage 9.9 K 2008-01-03 - 15:30 PedroRibeiro  
GIFgif Zprime_IdPt.gif r2 r1 manage 11.0 K 2008-01-03 - 15:31 PedroRibeiro  
GIFgif Zprime_PurEta.gif r2 r1 manage 11.1 K 2008-01-03 - 15:32 PedroRibeiro  
GIFgif Zprime_PurPhi.gif r2 r1 manage 11.7 K 2008-01-03 - 15:34 PedroRibeiro  
GIFgif Zprime_PurPt.gif r2 r1 manage 10.9 K 2008-01-03 - 15:36 PedroRibeiro  
GIFgif Zprime_RecAndIdEta.gif r2 r1 manage 11.8 K 2008-01-03 - 15:37 PedroRibeiro  
GIFgif Zprime_RecAndIdPT.gif r2 r1 manage 14.8 K 2008-01-03 - 15:40 PedroRibeiro  
GIFgif Zprime_RecAndIdPhi.gif r2 r1 manage 12.3 K 2008-01-03 - 15:41 PedroRibeiro  
GIFgif fakerate_div_eta.gif r1 manage 12.2 K 2008-01-03 - 15:06 PedroRibeiro  
GIFgif fakerate_div_eta_rel.gif r1 manage 12.8 K 2008-01-03 - 15:08 PedroRibeiro  
GIFgif fakerate_div_pt.gif r1 manage 8.7 K 2008-01-03 - 15:05 PedroRibeiro  
GIFgif fakerate_div_pt_rel.gif r1 manage 8.2 K 2008-01-03 - 15:07 PedroRibeiro  
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Topic revision: r9 - 2009-03-02 - MatteoSani
 
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