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Variables used for training the BDT

Variables used for training the BDT. 1. mm Selection 2 muons with pt>10, 20 , | h |<2.4 Isolated with tracks and calotowers ( trackIso<2, caloIso<5) “PreSelection cuts”  Ntracks>1 && MET>30 && InvMass>12 BDT cut. Ptmuon1, Ptmuon2 | h muon1|, | h muon2| MET InvMass dPhi muons

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Variables used for training the BDT

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  1. Variables used for training the BDT 1. mm Selection • 2 muons with pt>10, 20 , |h|<2.4 • Isolated with tracks and calotowers ( trackIso<2, caloIso<5) • “PreSelection cuts”  Ntracks>1 && MET>30 && InvMass>12 • BDT cut • Ptmuon1, Ptmuon2 • |h muon1|, |h muon2| • MET • InvMass • dPhi muons • Mt (max, min) • dPhi (muon, MET) (max, min) • NTracks • SumEt

  2. Samples TRAINING /H160_WW_2l/Summer08_IDEAL_V9_v2/GEN-SIM-RECO (130300 events) /WW_2l/Summer08_IDEAL_V9_v2/GEN-SIM-RECO (106100 events) /TTJets-madgraph/Summer08_IDEAL_V9_v2/GEN-SIM-RECO (1072006 events) TEST /pool/fanae103/10TeV_WW (65000 events) /TTbar-madgraph/Winter09_IDEAL_V11_FastSim_v1/GEN-SIM-DIGI-RECO (~10M events) /Zmumu/Summer08_IDEAL_V9_AODSIM_v1/AODSIM(~1M events) /WJets-madgraph/Summer08_IDEAL_V9_AODSIM_v1/AODSIM (~10M) • Number of available events at mm selection + “preselection” level • HWW160  5367 + 3488 • WW Summer08  4528 WW FastSim  2891 • tt Summer08  5987 tt Winter09  64674

  3. Files /CMSSW_2_1_12/src/miniTrees_Jan09 • HWW160_Jan09_Training • WW_Summer08_Jan09.root • Tt_Summer08_Jan09.root • HWW160_Jan09_Test.root • WW_FastSim_Jan09.root • Tt_Winter09_Jan09.root • Wjets_Summer08_Jan09.root • Zmumu_Summer08_Jan09.root /CMSSW_2_2_1/src/TMVA/macros TMVA v3.9.4 • TMVA_TrainAgainstWW_Jan09.root • TMVA_TrainAgainstTT_Jan09.root Weights • “TMVAnalysis_ww_Jan09” • “TMVAnalysis_tt_Jan09”

  4. ttbar FastSim vs ttbar FullSim /TTJets-madgraph/Summer08_IDEAL_V9_v2/GEN-SIM-RECO /TTbar-madgraph/Winter09_IDEAL_V11_FastSim_v1/GEN-SIM-DIGI-RECO

  5. /TTJets-madgraph/Summer08_IDEAL_V9_v2/GEN-SIM-RECO /TTbar-madgraph/Winter09_IDEAL_V11_FastSim_v1/GEN-SIM-DIGI-RECO

  6. WW FastSim vs WW FullSim /WW_2l/Summer08_IDEAL_V9_v2/GEN-SIM-RECO /pool/fanae103/10TeV_WW (FastSim)

  7. /WW_2l/Summer08_IDEAL_V9_v2/GEN-SIM-RECO /pool/fanae103/10TeV_WW (FastSim)

  8. 1. Training against WW ---------------------------------------------------------------- Rank : Variable : Variable Importance --------------------------------------------------------------- 1 : dPhi : 3.102e-01 2 : InvMass : 1.280e-01 3 : fabs(Etamuon1) : 1.057e-01 4 : fabs(Etamuon2) : 7.529e-02 5 : Mtmin : 7.429e-02 6 : dPhiMuMetmin : 5.561e-02 7 : dPhiMuMetmax : 5.496e-02 8 : MET : 4.375e-02 9 : Mtmax : 4.254e-02 10 : Ntracks : 3.545e-02 11 : Ptmuon2 : 3.194e-02 12 : Ptmuon1 : 2.138e-02 13 : SumEt : 2.093e-02 --------------------------------------------------------------- • Training • 79600 events from /H160_WW_2l/Summer08_IDEAL_V9_v2/GEN-SIM-RECO • /WW_2l/Summer08_IDEAL_V9_v2/GEN-SIM-RECO Signal = 5367 training / 3488 test Background =4528 training /2891 test 1000 Trees nCuts=20 PruneStrength=9.5 Testing efficiency compared to training efficiency (overtraining check) ----------------------------------------------------------------------------- MVA Signal efficiency: from test sample (from traing sample) Methods: @B=0.01 @B=0.10 @B=0.30 ----------------------------------------------------------------------------- BDT : 0.161 (0.190) 0.548 (0.601) 0.859 (0.877) -----------------------------------------------------------------------------

  9. 2. Training against tt ---------------------------------------------------------------- Rank : Variable : Variable Importance ---------------------------------------------------------------- 1 : Ntracks : 3.473e-01 2 : SumEt : 1.355e-01 3 : InvMass : 1.143e-01 4 : dPhi : 8.471e-02 5 : Mtmin : 5.941e-02 6 : dPhiMuMetmax : 5.152e-02 7 : dPhiMuMetmin : 4.223e-02 8 : Ptmuon2 : 3.764e-02 9 : Mtmax : 3.119e-02 10 : fabs(Etamuon2) : 3.008e-02 11 : fabs(Etamuon1) : 2.896e-02 12 : MET : 2.383e-02 13 : Ptmuon1 : 1.334e-02 ---------------------------------------------------------------- • Training • 79600 events from /H160_WW_2l/Summer08_IDEAL_V9_v2/GEN-SIM-RECO • /TTJets-madgraph/Summer08_IDEAL_V9_v2/GEN-SIM-RECO Signal = 5367 training / 3488 test Background =5987 training /64674 test 1000 Trees nCuts=20 PruneStrength=9.5 Testing efficiency compared to training efficiency (overtraining check) ----------------------------------------------------------------------------- MVA Signal efficiency: from test sample (from traing sample) Methods: @B=0.01 @B=0.10 @B=0.30 ----------------------------------------------------------------------------- BDT : 0.565 (0.597) 0.873 (0.896) 0.973 (0.975) -----------------------------------------------------------------------------

  10. BDT re-trained using Summer08 samples • New definition of Ntracks • Use of FastSim Winter09 samples to increase statistics New Training Old Training Old training applied to the new samples

  11. VERY low statistics for W+jets!!!! (only 40 real events! after muon selection) Start using Z+jets and W+jets Winter09 FastSim samples

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