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Status of Trilepton Analysis at SUSY Meeting - UDINE University: Data, MC, and Event Selection

This study presents the current analysis status of trilepton events at a SUSY meeting held at UDINE University. The analysis involves data from dilepton datasets, MC simulations, and specific signal points for SUSY events. Various background processes such as DY, ttbar, WW, ZZ, WZ, and bbbar are considered along with fake lepton estimation using inclusive samples. Event selections, control regions, and conclusions from the analysis are discussed, highlighting the progress made in lepton fake calculations and plans for further investigations.

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Status of Trilepton Analysis at SUSY Meeting - UDINE University: Data, MC, and Event Selection

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

  2. Data and MC • Data • SUSY dilepton dataset edil0d • Good run list v7 no silicon (224pb-1), CEM4_CMUP4 trigger • MC • Signal point (m0=100,m1/2=180,A0=0,tanβ=5,μ>0)~360fb-1 • DY sexo9t (Z ll, Mll>5GeV/c2)~5fb-1 • ttbar (ttopel)~170fb-1 • WW (wtop1w)~34fb-1 • ZZ (Oscar)~535fb-1 • WZ (Madgraph)~430fb-1 • bbbar (Giovanni)~57pb-1 • Fakes • 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 SUSY meeting

  3. Event Selection • Events with 1 electron and 1 muon • Leading lepton pT>10 GeV/c • Next-to-leading lepton pT>5 GeV/c • 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 SUSY meeting

  4. Last time Meμ MET OS A lot to understand SS SUSY meeting

  5. Since last time • Code • Fixed bug in dilepton fake estimation • Fixed bug in bbbar sample • MC • WZ NEW inclusive sample ~430fb-1 • bbbar (Giovanni) ~57pb-1 (last time 30 pb-1) SUSY meeting

  6. If TRILEPTON, SIGNAL REGION nJets <2 nJets >1 E F A A2 A A2 MET 10 15 G H G H I J 15 76 106 Invariant Mass of Mll eμControl Regions • A+E • MET>15 GeV • nJET<2 • A2+F • MET>15 GeV • nJET>1 • G+I • MET<10 GeV • nJET<2 • H+J • MET<10 GeV • nJET>1 SUSY meeting

  7. eμ events Meμ MET OS SS SUSY meeting

  8. A2+F • MET>15 GeV • nJET>1 • G+I • MET<10 GeV • nJET<2 • A+E • MET>15 GeV • nJET<2 eμ Control Regions Meμ Meμ Meμ OS SUSY meeting

  9. eμ Control Regions SUSY meeting

  10. μe events Mμe MET OS SS SUSY meeting

  11. A2+F • MET>15 GeV • nJET>1 • G+I • MET<10 GeV • nJET<2 • A+E • MET>15 GeV • nJET<2 μe Control Regions Mμe Mμe Mμe OS SUSY meeting

  12. μe Control Regions SUSY meeting

  13. Conclusions • Much more confident in lepton+fake estimation • bbbar • need a lot more • will double the statistics by next week • Dilepton CRs need some more work but look much more reasonable than last time • Will look at trilepton CR and 320 pb-1 SUSY meeting

  14. 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

  15. μe (10,5) OLD Mμe MET OS SS SUSY meeting

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