-- JoseRuiz - 25 Jul 2012

Z'→ W+W-→l+l-MET

Monte Carlo study

  • MC samples used in the analysis:
    MCdatasets.png

We select events with one electron and one muon, oppositely charged, requiring

  • process.selectedPatMuons.cut = 'pt>20. & abs(eta)<2.4 & isPFMuon & (isGlobalMuon|isTrackerMuon) & dB<0.02 & (caloIso+trackIso)/pt<0.15'
  • process.selectedPatElectrons.cut = 'pt>20. & abs(eta)<2.5 & hadronicOverEm<0.05 & (caloIso+trackIso)/pt<0.15'

The events passing the selection requirements are used to construct a transverse mass.

  • Transverse mass distribution for signal and background:
    mtStack.png

  • Significance of the signal (Z' 0.5 TeV) as a function of the invariant transverse mass:
    mtSig05.png

  • Significance of the signal (Z' 1.0 TeV) as a function of the invariant transverse mass:
    mtSig10.png

  • Significance of the signal (Z' 1.5 TeV) as a function of the invariant transverse mass:
    mtSig15.png

  • Significance of the signal (Z' 2.0 TeV) as a function of the invariant transverse mass:
    mtSig20.png

  • Event yield after (right) and before (left) applying the cut in the invariant transverse mass:
    mtYieldZp05.png

  • Event yield after (right) and before (left) applying the cut in the invariant transverse mass:
    mtYieldZp10.png

  • Event yield after (right) and before (left) applying the cut in the invariant transverse mass:
    mtYieldZp15.png

  • Event yield after (right) and before (left) applying the cut in the invariant transverse mass:
    mtYieldZp20.png

  • Expected 95% CL upper limit on the cross section:
    upLimit.png

  • Expected 95% CL upper limit on the cross section assuming 10% of error on the number of generated events:
    LimitErr01.png

  • Expected 95% CL upper limit on the cross section assuming 20% of error on the number of generated events:
    LimitErr02.png

  • Efficiency (basic selection X efficiency of the M-T cut) as a function of the Z' mass for signal:
    effZp.png

  • Efficiency (basic selection X efficiency of the M-T cut) as a function of the Z' mass:
    efficiency.png

Other channels

For the Z'→ W+W-→ljjMET channel see

/twiki/bin/view/Main/ZprimeToWWToljjMETAnalysis

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng LimitErr01.png r1 manage 18.9 K 2012-12-07 - 00:21 JoseRuiz Expected 95% CL upper limit on the cross section assuming 10% of error on the number of generated events
PNGpng LimitErr02.png r1 manage 19.1 K 2012-12-07 - 00:25 JoseRuiz Expected 95% CL upper limit on the cross section assuming 20% of error on the number of generated events
PNGpng MCdatasets.png r1 manage 60.3 K 2012-11-27 - 15:17 JoseRuiz MC samples used in the analysis
PNGpng datasets.png r1 manage 55.4 K 2012-08-08 - 17:23 JoseRuiz  
PNGpng effZp.png r1 manage 16.7 K 2012-12-07 - 00:22 JoseRuiz Efficiency (basic selection X efficiency of the M-T cut) as a function of the Z' mass for signal
PNGpng efficiency.png r1 manage 16.5 K 2012-12-04 - 21:45 JoseRuiz Efficiency (basic selection X efficiency of the M-T cut) as a function of the Z' mass
PNGpng mtSig05.png r1 manage 18.9 K 2012-11-27 - 14:55 JoseRuiz Significance of the signal (Z' 0.5 TeV) as a function of the invariant transverse mass
PNGpng mtSig10.png r1 manage 18.6 K 2012-11-27 - 14:56 JoseRuiz Significance of the signal (Z' 1.0 TeV) as a function of the invariant transverse mass
PNGpng mtSig15.png r1 manage 18.6 K 2012-11-27 - 14:57 JoseRuiz Significance of the signal (Z' 1.5 TeV) as a function of the invariant transverse mass
PNGpng mtSig20.png r1 manage 18.4 K 2012-11-27 - 14:58 JoseRuiz Significance of the signal (Z' 2.0 TeV) as a function of the invariant transverse mass
PNGpng mtStack.png r1 manage 20.0 K 2012-11-27 - 14:48 JoseRuiz Transverse mass distribution for signal and background
PNGpng mtYieldZp05.png r1 manage 30.1 K 2012-11-27 - 15:00 JoseRuiz Event yield after (right) and before (left) applying the cut in the invariant transverse mass
PNGpng mtYieldZp10.png r1 manage 30.2 K 2012-11-27 - 15:01 JoseRuiz Event yield after (right) and before (left) applying the cut in the invariant transverse mass
PNGpng mtYieldZp15.png r1 manage 30.0 K 2012-11-27 - 15:02 JoseRuiz Event yield after (right) and before (left) applying the cut in the invariant transverse mass
PNGpng mtYieldZp20.png r1 manage 29.6 K 2012-11-27 - 15:02 JoseRuiz Event yield after (right) and before (left) applying the cut in the invariant transverse mass
PNGpng upLimit.png r3 r2 r1 manage 19.0 K 2012-12-04 - 21:43 JoseRuiz Expected 95% CL upper limit on the cross section
Topic revision: r13 - 2012-12-17 - JoseRuiz
 

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