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Status of e μ low-p T trilepton analysis

Status of e μ low-p T trilepton analysis. M.Rossi, G.Pauletta,M.Giordani Udine University. Outline . Data and MC Lepton Selection Control Regions under investigation Dilepton events Dielectron Dimuon Electron-Muon Conclusions. Data and MC. Data SUSY dilepton dataset edil0d

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Status of e μ low-p T trilepton analysis

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  1. Status of eμ low-pT trilepton analysis M.Rossi,G.Pauletta,M.Giordani Udine University SUSY meeting

  2. Outline • Data and MC • Lepton Selection • Control Regions under investigation • Dilepton events • Dielectron • Dimuon • Electron-Muon • Conclusions SUSY meeting

  3. Data and MC • Data • SUSY dilepton dataset edil0d • Good run list v7 no silicon • 224pb-1 up to February 2004 • Dielectron events • DIELECTRON_CENTRAL_4 trigger • Dimuon events • DIMUON_CMUPCMUP4 trigger • Electron-Muon events • CEM4_CMUP4 trigger SUSY meeting

  4. Data and MC • MC • Signal point ~360fb-1 (m0=100,m1/2=180,A0=0,tanβ=5,μ>0) • DY sexo9t (Z ll, Mll>5GeV/c2) ~5fb-1 • ttbar (ttopel) ~170fb-1 • WW (wtop1w) ~34fb-1 • ZZ (multilepton) ~535fb-1 • WZgamma (MadGraph) ~300-2500fb-1 • bbbar (Giovanni) ~30pb-1 SUSY meeting

  5. Lepton Selection • High pT (>20GeV/c) CEM and CMUP selection • Standard top/ewk definition • 4-20GeV/c pT range • Muon ID as in CDF 7197 (Purdue) • Electron ID as high pT • CEM ID Scale Factors • CMUP ID Scale Factors • SF ET CDF note • 1.00 4-8GeV 7379 • 1.03 8-20GeV 7233 • 0.996 >20GeV 7309 • SF PT CDF note • 0.85 4-20GeV 7197 • 0.881 >20GeV 7309 SUSY meeting

  6. ee selection (OS) 1st lepton pT>10 GeV/c 2nd lepton pT>5 Gev/c SUSY meeting

  7. ee selection Z window (OS) 1st lepton pT>10 GeV/c 2nd lepton pT>5 Gev/c Z obs 3410 exp 3363 SUSY meeting

  8. μμ selection (OS) 1st lepton pT>10 GeV/c 2nd lepton pT>5 Gev/c SUSY meeting

  9. μμ selection Z window (OS) 1st lepton pT>10 GeV/c 2nd lepton pT>5 Gev/c Z obs 883 exp 878 SUSY meeting

  10. If TRILEPTON, SIGNAL REGION nJets < 2 nJets > 1 E F A A2 A A2 MET 10 15 G H I J G H 15 76 106 Invariant Mass of electrons Mll Contron Regions a la Teruki SUSY meeting

  11. eμControl Regions • MET>15 GeV and nJET<2 (A+E) • MET>15 GeV and nJET>1 (A2+F) • MET<10 GeV and nJET<2 (G+I) • MET<10 GeV and nJET>1 (H+J) 1st lepton pT>20 GeV/c 2nd lepton pT>8 Gev/c SUSY meeting

  12. eμ selection 1st lepton pT>20 GeV/c 2nd lepton pT>8 Gev/c SUSY meeting

  13. eμ MET>15 and nJET<2 (A+E) 1st lepton pT>20 GeV/c 2nd lepton pT>8 Gev/c SUSY meeting

  14. eμ MET>15 and nJET>1 (A2+F) 1st lepton pT>20 GeV/c 2nd lepton pT>8 Gev/c SUSY meeting

  15. eμ MET<10 and nJET<2 (G+I) 1st lepton pT>20 GeV/c 2nd lepton pT>8 Gev/c SUSY meeting

  16. eμ (20,8) Control Regions SUSY meeting

  17. eμ selection 1st lepton pT>10 GeV/c 2nd lepton pT>5 Gev/c SUSY meeting

  18. Conclusions • ee and μμ distributions better • whole spectrum and Z window • eμ (20,8) shows some excess in data • whole spectrum and Teruki control regions • eμ (10,5) missing something • maybe fakes • Fakes calculation is our next step • the machinary is there • Look at trilepton CR • Up to ~320pb-1 (shutdown 2004) • using CEM4_CMU4 trigger path SUSY meeting

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