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ATLAS analysis One Lepton Mode SUSY

ATLAS analysis One Lepton Mode SUSY. 2007.7.13 Ginga Akimoto. Background estimation (1fb-1). SU1-SU4 tt->bblnln tt->bblnqq W Leading Jet pt mEt nJet(Pt>50GeV) Lep Pt Control Sample (Mt <100GeV) renormalize by Event # of mEt=100GeV-200GeV. Mt. # Na(Mt<100Gev ) and Nb(Mt=100-400).

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ATLAS analysis One Lepton Mode SUSY

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  1. ATLAS analysisOne Lepton Mode SUSY 2007.7.13 Ginga Akimoto

  2. Background estimation (1fb-1) • SU1-SU4 • tt->bblnln • tt->bblnqq • W • Leading Jet pt • mEt • nJet(Pt>50GeV) • Lep Pt • Control Sample (Mt <100GeV) • renormalize by Event # of mEt=100GeV-200GeV

  3. Mt

  4. # Na(Mt<100Gev ) and Nb(Mt=100-400) • Na(ctrl) Nb(100-) N_over • ttlnln 194.876 197.372 • ttlnqq 1773.54 63.2566 • W 786.222 29.0538 • SU1 172.065 236.283 19.1486 • SU2 22.518 30.9096 2.50596 • SU3 325.83 407.035 36.2607 • SU4 3819.93 3238.3 425.109 • N_over=Na(SUSY)/Na(ttlnqq)*Nb(ttlnln) • Nb(SUSY) >> N_over ～10%

  5. Control Sample = [ MT < 100GeV ]

  6. mEt ( -0- is CTRL estimation )

  7. Jet Pt1

  8. nJet

  9. Lepton Pt ( >20GeV)

  10. Mt > 200GeV • low mEt missing @ high Mt Mt mEt

  11. Mt > 400GeV

  12. BG estimate

  13. systematic error (mEt) • mEt ------> • mEt*1.1

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