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Melisa Rossi Udine University

Chargino and Neutralino production: e μ low-p T channel PR-blessing for SIF conference (Società di Fisica Italiana). Melisa Rossi Udine University. Outline . Data and MC Lepton Selection To gain confidence in our tools

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Melisa Rossi Udine University

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  1. Chargino and Neutralino production: eμ low-pT channelPR-blessing for SIF conference (Società di Fisica Italiana) Melisa Rossi Udine University Exotic Meeting

  2. Outline • Data and MC • Lepton Selection • To gain confidence in our tools • Cross check with dielectron selection of the ee low-pT analysis (CDF7478) • First look at the eμ channel Exotic 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 • Electron-Muon events: CEM4_CMUP4 trigger • MC • Signal “Anadi Point” (m0=100GeV/c2,m1/2=180GeV/c2,A0=0,tanβ=5,μ>0) • DY (sexo8t) multilepton sample • ttbar (ttopel) official top sample • WW (wtop1w) official top sample • ZZ multilepton sample Exotic Meeting

  4. 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 Exotic Meeting

  5. Mee in 224pb-1 Dielectron selection: 1st electron with pT>10 GeV 2nd electron with pT>5 GeV Exotic Meeting

  6. Meμin 224 pb-1 Dilepton selection: 1st electron with pT>20 GeV 2nd muon with pT>8 GeV Exotic Meeting

  7. MC Background vs. Signal 1st electron 10 GeV & 2nd electron 5 GeV Exotic Meeting

  8. MC Background vs. Signal 1st electron 10 GeV & 2nd electron 5 GeV requiring the third lepton Exotic Meeting

  9. MC Background vs. Signal 1st electron 10 GeV & 2nd electron 5 GeV requiring the third lepton MET>15GeV & M12>15GeV Exotic Meeting

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