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Lepton efficiency & fake rate Yousuke Kataoka (University of Tokyo) page 1 11 Sep 2007.

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Presentation on theme: "Lepton efficiency & fake rate Yousuke Kataoka (University of Tokyo) page 1 11 Sep 2007."— Presentation transcript:

1 lepton efficiency & fake rate Yousuke Kataoka (University of Tokyo) page 1 11 Sep 2007

2 SU3 trig1_misal1_csc11_V1.005403.SU3_jimmy_susy.recon.AOD.v12000601_tid008571 399 files (remove overlapped files:._00004.pool.root.2,._00013.pool.root.3) 99700 events (file 00090 has 200 events) T1 trig1_misal1_mc12.005200.T1_McAtNlo_Jimmy.recon.AOD.v12000604_tid007900 238 files 59300 events (file 00120 has 50 events) T1 (large sample) trig1_misal1_mc12.005200.T1_McAtNlo_Jimmy.recon.AOD.v12000604_tid008037 2152 files (remove overlapped files:._01024.pool.root.3,._01024.pool.root.4) 537800 events datasets page 2

3 Reconstructed Lepton Electron egamma Algorithm (not softe) isEMmask 0x3ff Isolation: ET(cone0.2) < 10GeV |eta| 5GeV Muon MuID Algorithm Combined Muon (with best match) Track match chi2 0) Track fit chi2 / DoF< 5 Isolation: ET(cone0.2) < 10GeV |eta| 5GeV definition of efficiency Truth Lepton All stable generator-level lepton (e, μ) barcode < 100000 reject G4-lepton by barcode Isolation: ET(cone0.2) < 10GeV |eta| 10GeV ※ Truth-Reconstructed matching is done by dR=0.02 page 3

4 Reconstructed Lepton Electron egamma Algorithm (not softe) isEMmask 0x3ff Isolation: ET(cone0.2) < 10GeV |eta| 10GeV Muon MuID Algorithm Combined Muon (with best match) Track match chi2 0) Track fit chi2 / DoF< 5 Isolation: ET(cone0.2) < 10GeV |eta| 10GeV definition of fake rate Truth Lepton All stable generator-level lepton (e, μ) barcode < 100000 reject G4-lepton by barcode No isolation cut |eta| 5GeV Truth Jet |eta|<2.5, no pT cut dR=0.2 far from Truth Electron (>10GeV) separete Tau Jet component (tau hadronic jet exists within dR=0.2 or not) ※ Truth-Reconstructed matching is done by dR=0.02 ※ Lepton-Jet matching is done by dR=0.2 page 4

5 SU3 Page.5

6 Lepton efficiency for SU3 (12.0.6.1,V1) Electron pT dependence Electron eta dependence (pT>20GeV) Muon eta dependence (pT>20GeV) Muon pT dependence Page.6 75.5±0.3% (pT>20GeV) 85.1±0.3% (pT>20GeV)

7 fake electron matched jet fake muon matched jet pT events fake rate for electron fake rate for muon small … (maybe, no need to apply for Atlfast) fake rate from tau jet contribution of tau contribution of others pT of Jet fake rate for SU3 ～ 2% Page.7 scale down ( ～ 40%) 50-70GeV  23GeV

8 #event =99700 #Truth Jet (>20GeV,|eta|<2.5)462323 (tau: 36980) Reco.Truth Electron (>20GeV)1279115559 Muon (>20GeV)1353315544 # truth denominator (pT>10GeV) # rec. candidates (pT>5GeV) pT>10GeV |eta|<2.5 pT>20GeV |eta|<2.5 Electron206202078672.3±0.375.5±0.3 Muon206802203585.0±0.285.1±0.2 # rec. denominator (pT>10GeV) # truth candidates (pT>5GeV) # fake lepton# jet match (dR=0.2) matched jet is tau jet (dR=0.2) Electron169164228716061404769 Muon1819736985403013 fake rate efficiency (%) basic numbers numbers, efficiency, fake rate for SU3 Page.8

9 T1 Page.9

10 Lepton efficiency for T1 (12.0.6.4) Electron pT dependence Electron eta dependence (pT>20GeV) Muon eta dependence (pT>20GeV) Muon pT dependence 73.4±0.3% (pT>20GeV) 86.0±0.3% (pT>20GeV) Page.10

11 fake electron matched jet fake muon matched jet pT events fake rate for electron fake rate for muon small … (maybe, no need to apply for Atlfast) fake rate from tau jet contribution of tau contribution of others pT of Jet fake rate for T1 ～ 2% Page.11 scale down ( ～ 40%) 50-70GeV  26GeV

12 #event =59300 #Truth Jet (>20GeV,|eta|<2.5)241362 (tau: 9447) Reco.Truth Electron (>20GeV)1464618622 Muon (>20GeV)1709319241 # truth denominator (pT>10GeV) # rec. candidates (pT>5GeV) pT>10GeV |eta|<2.5 pT>20GeV |eta|<2.5 Electron223652010171.3±0.373.4±0.3 Muon229972359285.9±0.286.0±0.3 # rec. denominator (pT>10GeV) # truth candidates (pT>5GeV) # fake lepton# jet match (dR=0.2) matched jet is tau jet (dR=0.2) Electron1773438067815723169 Muon208923738826190 fake rate efficiency (%) basic numbers numbers, efficiency, fake rate for T1 Page.12

13 T1 (large sample) Page.13

14 Lepton efficiency for T1 (large sample) Electron pT dependence Electron eta dependence (pT>20GeV) Muon eta dependence (pT>20GeV) Muon pT dependence 73.4±0.1% (pT>20GeV) 86.6±0.1% (pT>20GeV) Page.14

15 fake electron matched jet fake muon matched jet pT events fake rate for electron fake rate for muon small … (maybe, no need to apply for Atlfast) fake rate from tau jet contribution of tau contribution of others pT of Jet fake rate for T1 (large sample) ～ 1.5% Page.15 scale down ( ～ 40%) 50-70GeV  25GeV

16 #event =537800 #Truth Jet (>20GeV,|eta|<2.5)2190270 (tau: 84797) Reco.Truth Electron (>20GeV)132255168680 Muon (>20GeV)156176175291 # truth denominator (pT>10GeV) # rec. candidates (pT>5GeV) pT>10GeV |eta|<2.5 pT>20GeV |eta|<2.5 Electron20264918102971.0±0.173.4±0.1 Muon20994021576486.4±0.186.6±0.1 # rec. denominator (pT>10GeV) # truth candidates (pT>5GeV) # fake lepton# jet match (dR=0.2) matched jet is tau jet (dR=0.2) Electron159831345353709863371366 Muon19148934018620415629 fake rate efficiency (%) basic numbers numbers, efficiency, fake rate for T1 (large) Page.16

17 Atlfast correction Page.17

18 AtlfastParticleJet Container AtlfastElectron Collection AtlfastMuon Collection AtlfastMissingEt Corrected AtlfastMissingEt Corrected AtlfastMuon Collection Corrected AtlfastElectron Collection Corrected AtlfastParticleJet Container fake efficiency fake scale shift tau non-tau ～ O(10 -2 ) ～ O(10 -3 ) ～ 85% ～ 75% missing Jet Electron Muon Missing scale shift Page.18 ～ 40%

19 Apply lepton efficiency to Atlfast Electron （ AtlfastElectronCollection ） Muon (AtlfastMuonCollection) Page.19 pT dep. eta dep. (pT>20GeV) pT dep. eta dep. (pT>20GeV) extracted from T1 sample (page14) fairly smooth  no parametrization pT-eta correlation is not considerd Electron （ CorrectedAtlfastElectronCollection ） identifiedinefficiency Jet (CorrectedAtlfastParticleJetContainer) Muon (CorrectedAtlfastMuonCollection) identifiedinefficiency Missing (CorrectedAtlfastMissingEt) need e/h factor ? set 1 for temporary

20 Apply fake rate to Atlfast Page.20 Electron （ Corrected AtlfastElectron Collection ） Jet (CorrectedAtlfastParticleJetContainer) Missing (CorrectedAtlfastMissingEt) Jet (AtlfastParticleJetContainer) tau jet ? 1.5% scale shift yesno fake muon fake rate is less than 1/10 of electron fake rate  not considered for temporary page 15 scale shift distributions every 10GeV

21 software & validation AtlfastCorrectors… under development lxplus: ~kataoka/public/AtlfastCorrectors Inputs (AOD container) –AtlfastElectronCollection –AtlfastMuonCollection –AtlfastParticleJetContainer –AtlfastMissingEt Outputs (AOD container) … can be inputs of EventView, I think … –CorrectedAtlfastElectronCollection –CorrectedAtlfastMuonCollection –CorrectedAtlfastParticleJetContainer –CorrectedAtlfastMissingEt Ver. 00-00-01 … only support constant efficiency and fake rate validation … not yet Page.21

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