bg study in pat cmssw_3_5_7

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BG study in PAT CMSSW_3_5_7 All of these using this event selection Event Selection - Electron p T > 20 GeV/c - Electron Isolation < 0.1 - Standard Electron Identification - Electron abs(eta) < 2.5 - Missing Transverse Energy > 20 GeV - At least 3 jets with Pt(L2L3) > 20 GeV - At least one of above jets is b (>2.03) M(jj) Reconstruction - Jet p T > 25 GeV/c - HighEfficenecy b tag < 2.03 - abs(eta) <3 - ΔR(jj) > 0.5 Data set: /ZeeJet_Pt30to50/Spring10-START3X_V26_S09- v1/GEN-SIM-RECO *With L2L3 energy correction *Add 2 more event selections At least 3 jets with Pt(L2L3) > 20 GeV and At least one of above jets is b (>2.03) * Change Jet Pt to > 25 GeV/c

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Event Selection - Electron p T > 20 GeV/c - Electron Isolation < 0.1 - Standard Electron Identification  - Electron abs(eta) < 2.5 - Missing Transverse Energy > 20 GeV - At least 3 jets with Pt(L2L3) > 20 GeV - At least one of above jets is b (>2.03). - PowerPoint PPT Presentation

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Page 1: BG study in PAT CMSSW_3_5_7

BG study in PAT CMSSW_3_5_7

All of these using this event selection

Event Selection - Electron pT > 20 GeV/c - Electron Isolation < 0.1 - Standard Electron Identification  - Electron abs(eta) < 2.5 - Missing Transverse Energy > 20 GeV - At least 3 jets with Pt(L2L3) > 20 GeV - At least one of above jets is b (>2.03)

M(jj) Reconstruction - Jet pT > 25 GeV/c - HighEfficenecy b tag < 2.03 - abs(eta) <3 - ΔR(jj) > 0.5

Data set: /ZeeJet_Pt30to50/Spring10-START3X_V26_S09-v1/GEN-SIM-RECO

*With L2L3 energy correction*Add 2 more event selections At least 3 jets with Pt(L2L3) > 20 GeV and At least one of above jets is b (>2.03)* Change Jet Pt to > 25 GeV/c

Page 2: BG study in PAT CMSSW_3_5_7

ZeeJet_Pt30to50

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Same Events Mixed Events

Page 3: BG study in PAT CMSSW_3_5_7

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Same event

Log Scale

300-500 GeV/c2

Normalization Region

ZeeJet_Pt30to50

Page 4: BG study in PAT CMSSW_3_5_7

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Zoom-in

ZeeJet_Pt30to50