Difference: OliverGutscheDSGWithoutNJetCut ( vs. 1)

Revision 110 Nov 2008 - Main.OliverGutsche

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META TOPICPARENT name="OliverGutsche"

DSG without calo njet cut but with trk njet cut

WW Baseline without njet cut

  ww wz zz wjets dyee dymm dytt ttbar tw LM1 LM2 LM4 total
all 565.5 ± 9.3 21.9 ± 1.7 5.6 ± 0.8 68.1 ± 12.5 14.2 ± 4.1 39.3 ± 6.9 23.3 ± 5.5 346.9 ± 12.2 103.0 ± 3.8 23.1 ± 2.9 2.9 ± 0.5 5.5 ± 1.0 1219.3 ± 22.7
mm 105.0 ± 4.0 4.5 ± 0.8 2.7 ± 0.6 2.1 ± 1.5 0.0 ± 0.0 35.9 ± 6.6 1.5 ± 1.1 87.3 ± 6.1 22.9 ± 1.8 11.2 ± 2.0 1.3 ± 0.3 1.7 ± 0.6 276.2 ± 10.5
em 387.6 ± 7.7 13.8 ± 1.4 0.6 ± 0.3 57.9 ± 11.2 0.0 ± 0.0 3.4 ± 1.9 20.9 ± 5.3 210.5 ± 9.5 65.7 ± 3.0 1.8 ± 0.8 0.2 ± 0.1 1.9 ± 0.6 764.2 ± 17.9
ee 72.8 ± 3.3 3.6 ± 0.7 2.4 ± 0.5 8.2 ± 5.4 14.2 ± 4.1 0.0 ± 0.0 0.9 ± 0.9 49.1 ± 4.6 14.4 ± 1.4 10.1 ± 1.9 1.3 ± 0.3 1.9 ± 0.6 178.9 ± 9.3

WW Baseline without njet cut and MET > 50 cut

  ww wz zz wjets dyee dymm dytt ttbar tw LM1 LM2 LM4 total
all 320.1 ± 7.0 12.7 ± 1.3 4.9 ± 0.7 18.6 ± 7.9 5.8 ± 2.4 27.9 ± 5.9 2.1 ± 1.2 261.6 ± 10.6 75.3 ± 3.3 19.8 ± 2.7 2.8 ± 0.5 4.3 ± 0.9 756.0 ± 16.9
mm 87.1 ± 3.7 3.9 ± 0.7 2.5 ± 0.5 0.0 ± 0.0 0.0 ± 0.0 27.9 ± 5.9 1.5 ± 1.1 80.4 ± 5.9 20.6 ± 1.7 9.7 ± 1.9 1.3 ± 0.3 1.7 ± 0.6 236.6 ± 9.6
em 173.5 ± 5.2 5.9 ± 0.9 0.2 ± 0.2 11.5 ± 5.8 0.0 ± 0.0 0.0 ± 0.0 0.6 ± 0.6 137.2 ± 7.7 41.1 ± 2.4 1.4 ± 0.7 0.1 ± 0.1 0.9 ± 0.4 372.6 ± 11.3
ee 59.4 ± 3.0 2.9 ± 0.6 2.2 ± 0.5 7.2 ± 5.3 5.8 ± 2.4 0.0 ± 0.0 0.0 ± 0.0 44.0 ± 4.3 13.6 ± 1.4 8.7 ± 1.8 1.3 ± 0.3 1.7 ± 0.6 146.8 ± 8.3

WW Baseline without njet cut and MET > 100 cut

  ww wz zz wjets dyee dymm dytt ttbar tw LM1 LM2 LM4 total
all 20.0 ± 1.8 1.4 ± 0.4 1.5 ± 0.4 0.0 ± 0.0 1.4 ± 1.0 3.8 ± 2.2 0.6 ± 0.6 36.8 ± 4.0 13.4 ± 1.4 6.9 ± 1.6 2.1 ± 0.4 2.3 ± 0.7 90.0 ± 5.5
mm 6.0 ± 1.0 0.4 ± 0.2 0.7 ± 0.3 0.0 ± 0.0 0.0 ± 0.0 3.8 ± 2.2 0.6 ± 0.6 14.3 ± 2.5 4.9 ± 0.8 2.5 ± 1.0 1.1 ± 0.3 1.1 ± 0.5 35.5 ± 3.8
em 11.1 ± 1.3 0.6 ± 0.3 0.1 ± 0.1 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 17.0 ± 2.7 6.5 ± 1.0 1.4 ± 0.7 0.1 ± 0.1 0.4 ± 0.3 37.1 ± 3.3
ee 2.9 ± 0.7 0.4 ± 0.2 0.7 ± 0.3 0.0 ± 0.0 1.4 ± 1.0 0.0 ± 0.0 0.0 ± 0.0 5.5 ± 1.5 2.0 ± 0.5 2.9 ± 1.0 0.9 ± 0.3 0.8 ± 0.4 17.4 ± 2.3

WW Baseline without njet cut and MET > 200 cut

  ww wz zz wjets dyee dymm dytt ttbar tw LM1 LM2 LM4 total
all 2.5 ± 0.6 0.1 ± 0.1 0.2 ± 0.2 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.6 ± 0.6 0.9 ± 0.7 0.6 ± 0.3 1.4 ± 0.7 0.4 ± 0.2 0.8 ± 0.4 7.5 ± 1.4
mm 0.9 ± 0.4 0.1 ± 0.1 0.1 ± 0.1 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.6 ± 0.6 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.1 ± 0.1 0.6 ± 0.3 2.5 ± 0.8
em 1.2 ± 0.4 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.5 ± 0.5 0.4 ± 0.2 1.1 ± 0.6 0.0 ± 0.0 0.2 ± 0.2 3.4 ± 1.0
ee 0.3 ± 0.2 0.0 ± 0.0 0.1 ± 0.1 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.4 ± 0.4 0.1 ± 0.1 0.4 ± 0.4 0.2 ± 0.1 0.0 ± 0.0 1.6 ± 0.6

poor man's fit to background reduction dependent on hyp_met cut

  • expo fit:
    • take met cut values as x values
    • take corresponding event yields of all samples except LM? as y values
    • let ROOT fit with "expo" ( f(x) = exp(p0+p1*x) )


  • use all fit, calculate MET cut for 10% background, which results in MET_Cut = (ln ( f(x) ) - p0)/p1 = ( ln(10)-6.339 ) / -0.044444 = ~90 GeV
  • use em fit, calculate MET cut for 10% background, which results in MET_Cut = (ln ( f(x) ) - p0)/p1 = ( ln(10)-6.234 ) / -0.04697 = ~84 GeV

Reduce background to 10%: MET cut of 90 GeV

Without MET cut

  ww wz zz wjets dyee dymm dytt ttbar tw LM1 LM2 LM4 total
all 565.5 ± 9.3 21.9 ± 1.7 5.6 ± 0.8 68.1 ± 12.5 14.2 ± 4.1 39.3 ± 6.9 23.3 ± 5.5 346.9 ± 12.2 103.0 ± 3.8 23.1 ± 2.9 2.9 ± 0.5 5.5 ± 1.0 1219.3 ± 22.7
mm 105.0 ± 4.0 4.5 ± 0.8 2.7 ± 0.6 2.1 ± 1.5 0.0 ± 0.0 35.9 ± 6.6 1.5 ± 1.1 87.3 ± 6.1 22.9 ± 1.8 11.2 ± 2.0 1.3 ± 0.3 1.7 ± 0.6 276.2 ± 10.5
em 387.6 ± 7.7 13.8 ± 1.4 0.6 ± 0.3 57.9 ± 11.2 0.0 ± 0.0 3.4 ± 1.9 20.9 ± 5.3 210.5 ± 9.5 65.7 ± 3.0 1.8 ± 0.8 0.2 ± 0.1 1.9 ± 0.6 764.2 ± 17.9
ee 72.8 ± 3.3 3.6 ± 0.7 2.4 ± 0.5 8.2 ± 5.4 14.2 ± 4.1 0.0 ± 0.0 0.9 ± 0.9 49.1 ± 4.6 14.4 ± 1.4 10.1 ± 1.9 1.3 ± 0.3 1.9 ± 0.6 178.9 ± 9.3

with MET cut of 90 GeV

  ww wz zz wjets dyee dymm dytt ttbar tw LM1 LM2 LM4 total
all 30.9 ± 2.2 1.9 ± 0.5 1.7 ± 0.4 0.0 ± 0.0 1.4 ± 1.0 3.8 ± 2.2 0.6 ± 0.6 63.1 ± 5.2 18.9 ± 1.6 9.0 ± 1.8 2.1 ± 0.4 2.3 ± 0.7 135.7 ± 6.7
mm 8.6 ± 1.1 0.6 ± 0.3 0.8 ± 0.3 0.0 ± 0.0 0.0 ± 0.0 3.8 ± 2.2 0.6 ± 0.6 21.2 ± 3.0 6.2 ± 0.9 2.9 ± 1.0 1.1 ± 0.3 1.1 ± 0.5 46.9 ± 4.3
em 16.6 ± 1.6 1.0 ± 0.4 0.1 ± 0.1 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 0.0 ± 0.0 28.2 ± 3.5 9.5 ± 1.2 1.4 ± 0.7 0.1 ± 0.1 0.4 ± 0.3 57.3 ± 4.1
ee 5.7 ± 0.9 0.4 ± 0.2 0.8 ± 0.3 0.0 ± 0.0 1.4 ± 1.0 0.0 ± 0.0 0.0 ± 0.0 13.7 ± 2.4 3.2 ± 0.7 4.7 ± 1.3 1.0 ± 0.3 0.8 ± 0.4 31.6 ± 3.2

comparison WW selection with njet cut (left) vs. WW selection without njet cut + 90 GeV MET cut (right) 












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