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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. Since last time. Fixed bug in Larry Correction for muon p T Following now Join Physics prescription Larry Correction not applied at MC e μ and μ e channels separately

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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. Since last time • Fixed bug in Larry Correction for muon pT • Following now Join Physics prescription • Larry Correction not applied at MC • eμ and μe channels separately • First look at fakes in the dilepton CRs SUSY meeting

  3. Lepton+fake Calculation • Using CEM8 and CMUP8 inclusive samples • Lepton+fake selection requiring events with • real first lepton • CEM8 for eμ and CMUP8 for μe • fake lepton using Liverpool method • Should rescale for the trigger efficiency (εCEM4/εCEM8) but • Don’t have the numbers handy • Neglecting it as a first estimate should be fine • εCEM4 = 0.956, εCEM18 = 0.966 • εCMUP4 = 0.92, εCMUP18 = 0.90 • Rescale for the considered integrated luminosity SUSY meeting

  4. eμ (20,8) selection Meμ MET OS SS SUSY meeting

  5. μe (20,8) selection Mμe MET OS SS SUSY meeting

  6. eμ (10,5) selection Meμ MET OS SS SUSY meeting

  7. μe (10,5) selection Mμe MET OS SS SUSY meeting

  8. Conclusions • Still a lot to understand  • eμ (10,5) still problematic, fakes did not solve the discrepancy • Any suggestion is more than welcome  SUSY meeting

  9. 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

  10. 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

  11. 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

  12. 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

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