Difference: CMSSusyAnalysisResults (21 vs. 22)

Revision 222015-04-17 - JanosKarancsi

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META TOPICPARENT name="CmsSusy"
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Twikis:
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Useful info:
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CMS PAS JME-09-001 2009 CMS A Cambridge-Aachen (C-A) based Jet Algorithm for boosted top-jet tagging
arXiv:1011.2268 2010 J. Thaler, K. V. Tilburg Identifying Boosted Objects with N-subjettiness tau variables (N-sj.), Mistag rates, tagging efficiencies
arXiv:1006.2833 2010 T. Plehn et. al Stop Reconstruction with Tagged Tops
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[[http://arxiv.org/pdf/1007.2221.pdf][]] 2010 K. Rehermann, B. Tweedie Efficient Identification of Boosted Semileptonic Top Quarks at the LHC Mini Isolation, new default for SUSY group.
 
CMS-PAS-B2G-12-006 (Twiki) 2013 CMS Search for Anomalous Top Quark Pair Production in the Boosted All-Hadronic Final State Mistag rate of top tagging algo, Multijet bkg estimation
CMS-PAS-B2G-12-006 (Twiki) 2013 CMS Search for ttbar resonances in semileptonic final state 2D cut for semi-leptonic top
CMS-PAS-JME-13-007 2014 february CMS Boosted Top Jet Tagging at CMS
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Important results

Links to latest results

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Cut flow chart

Best cuts using Smin maximisation script - New
  • 2 Hadronic tops
Deleted:
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  • Loose lepton veto
  Maximum Smin, for all combination of cuts:
Changed:
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Best cut T5ttttDeg 4bodydec mGo1300 T5ttttDeg 3bodydec mGo1300 QCD_HT QCD_Pt bcToE TTBar GJets_HT WJets_HT T_tW TToLep_s_t ZJets_HT DYJets_HT All bg Smin = Eff./(5/2+sqrt(B))
No cut 16.46 16.81 13569.47 44965.06 5257.04 194.89 35.20 49.68 1.72 6.81 4.32 64084.20 0.00391
HTall>2550 4.64 4.20 374.39 0.00 312.57 10.38 3.48 3.57 0.00 0.74 0.29 705.42 0.00861
DPhi<1.6 3.09 3.06 54.46 0.00 158.98 1.30 0.25 2.15 0.00 0.15 0.05 217.34 0.01055
R>0.44 7.99 7.36 0.00 0.00 2.69 0.00 0.35 0.00 0.00 0.14 0.03 3.22 0.10194
DPhi<2.7 && HTall>2100 7.64 6.74 197.41 0.00 301.79 5.53 1.77 2.86 0.00 0.47 0.18 510.00 0.01598
R>0.44 && HTall>1200 7.98 7.36 0.00 0.00 2.69 0.00 0.35 0.00 0.00 0.14 0.03 3.22 0.10194
R>0.35 && DPhi<2.8 10.02 9.84 0.00 0.00 0.00 0.05 0.61 0.00 0.00 0.32 0.02 1.00 0.16734
R>0.32 && DPhi<2.8 && HTall>1450 10.51 10.18 0.00 0.00 0.00 0.05 0.66 0.00 0.00 0.36 0.01 1.08 0.17126
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Best cut T5ttttDeg_4bodydec_mGo1300 T5ttttDeg_3bodydec_mGo1300 TTJets WJets_HT ZJets_HT QCD_HT T_tW All bg Smin = Eff./(5/2+sqrt(B))
No cut 23.47 24.17 4213.88 104.94 7.60 14906.68 72.73 19305.84 0.00707
HTall>2050 15.74 15.24 283.71 30.66 2.09 1306.98 15.65 1639.08 0.01467
DPhi<2.3 10.80 10.70 107.54 3.18 0.43 258.67 4.74 374.57 0.02025
R>0.45 10.35 10.11 2.29 0.76 0.15 0.00 0.36 3.55 0.09538
DPhi<2.7 && HTall>2050 11.78 11.38 82.04 5.30 0.57 258.67 5.10 351.69 0.02216
R>0.45 && HTall>1200 10.34 10.11 2.29 0.76 0.15 0.00 0.36 3.55 0.09538
R>0.36 && DPhi<2.75 13.46 13.33 2.29 1.11 0.30 0.00 0.00 3.70 0.12461
R>0.36 && DPhi<2.75 && HTall>1100 13.46 13.33 2.29 1.11 0.30 0.00 0.00 3.70 0.12461
 
Changed:
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  • R > 0.4
  • DPhi < 2.8
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<		Manual cuts are ( R > 0.4 && DPhi < 2.8 && HTall > 0 )
Cut T5ttttDeg 4bodydec mGo1300 T5ttttDeg 3bodydec mGo1300 QCD_HT QCD_Pt bcToE TTBar GJets_HT WJets_HT T_tW TToLep_s_t ZJets_HT DYJets_HT All Background Smin = Eff./(5/2+sqrt(B))
No Cut 16.46 16.81 13569.47 44965.06 5257.04 194.89 35.20 49.68 1.72 6.81 4.32 64084.20 0.00391
DPhi<2.8 12.74 12.72 1344.02 2569.43 1158.65 21.35 5.30 9.26 0.00 1.52 0.57 5110.10 0.01023
R>0.4 9.26 8.72 0.00 0.00 13.47 0.05 0.61 0.36 0.00 0.29 0.04 14.82 0.08175
R>0.4 && DPhi<2.8 8.81 8.40 0.00 0.00 0.00 0.05 0.45 0.00 0.00 0.19 0.01 0.71 0.14960
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Cut T5ttttDeg_4bodydec_mGo1300 T5ttttDeg_3bodydec_mGo1300 TTJets WJets_HT ZJets_HT QCD_HT T_tW All Background Smin = Eff./(5/2+sqrt(B))
No Cut 23.47 24.17 4213.88 104.94 7.60 14906.68 72.73 19305.84 0.00707
DPhi < 2.8 17.94 18.34 580.83 14.60 1.72 1493.78 14.89 2105.82 0.01568
R > 0.4 12.77 12.50 9.81 1.46 0.38 0.00 0.73 12.38 0.08590
R > 0.4 + DPhi < 2.8 12.03 11.98 2.29 0.86 0.27 0.00 0.00 3.41 0.11400
 

Background Estimation

Signal selection cuts:

  • 2 Hadronic tops
Deleted:
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  • Loose lepton veto
 
  • R > 0.4
  • DPhi < 2.8

Introducing the method

ABCD Method:
  • Define NTop<2 sideband, where the sideband is defined as 2 loose top-like jets:
Changed:
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    • Has at least 2 AK8 jets with pt > 400, prunedMass > 100
    • Sideband cut: NTopHad < 2
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    • Has at least 2 AK8 jets with pt > 400, prunedMass > 140
    • Sideband cut: NTopHad < 2 (at least one tau32 cut is inverted)
 
  • Measure event yields in the R<0.4 sideband both for A) NTop<2 and C) NTop==2
  • Fit NTop<2 sideband (A, B) with an exponential decay curve: exp(const + x * slope)
    • Extract fit parameters and their error: const, slope
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Table

To see how much background is there with given statistics:
  • No lepton veto applied
Deleted:
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  • For TTBar and QCD, Sideband is in the DPhi>2.8 region instead of NTop<2
 
Changed:
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Sample A (R<0.4, Sideband) B (R fit in Sideband) pred. B (R>0.4, Sideband) C (R<0.4, Signal band) D (R fit in C) pred. D = B*C/A pred. D = B (R fit in Sideband) * C/A D (R>0.4, Signal band) obs. Nevent in D
TTBar 5914.51 +- 126.24 22.07 +- 2.50 43.11 +- 10.78 1678.70 +- 67.26 3.16 +- 1.05 12.24 +- 3.11 6.26 +- 0.76 2.69 +- 2.69 1
WJets_HT 623.37 +- 5.61 39.91 +- 4.54 38.43 +- 1.39 13.69 +- 0.83 1.14 +- 1.67 0.84 +- 0.06 0.88 +- 0.11 0.86 +- 0.21 17
ZJets_HT 71.62 +- 0.81 15.56 +- 3.38 17.16 +- 0.40 1.43 +- 0.11 0.41 +- 1.50 0.34 +- 0.03 0.31 +- 0.07 0.27 +- 0.05 29
QCD_HT 13412.90 +- 302.17 0.90 +- 0.12 0.00 +- 0.00 1493.78 +- 100.84 0.29 +- 0.18 0.00 +- 0.00 0.10 +- 0.01 0.00 +- 0.00 0
T_tW 395.02 +- 11.84 5.26 +- 1.51 7.16 +- 1.59 14.64 +- 2.28 0.15 +- 1.40 0.27 +- 0.07 0.19 +- 0.06 0.00 +- 0.00 0
DYJets_HT 160.98 +- 0.88 0.27 +- 0.24 0.79 +- 0.06 3.92 +- 0.14 0.00 +- 0.02 0.02 +- 0.00 0.01 +- 0.01 0.01 +- 0.01 2
SUM 20578.41 +- 327.74 83.97 +- 6.37 106.65 +- 10.99 3206.15 +- 121.23 5.15 +- 2.85 13.71 +- 9.68 7.75 +- 0.78 3.83 +- 2.70 49

Below test of clusure with slightly relaxed R cut:

  • R cut is relaxed to > 0.35

Sample A (R<0.4, Sideband) B (R fit in Sideband) pred. B (R>0.4, Sideband) C (R<0.4, Signal band) D (R fit in C) pred. D = B*C/A pred. D = B (R fit in Sideband) * C/A D (R>0.4, Signal band) obs. Nevent in D
TTBar 5863.31 +- 125.69 53.73 +- 4.96 94.31 +- 15.94 1665.22 +- 66.99 8.38 +- 2.27 26.78 +- 4.69 15.26 +- 1.57 10.78 +- 5.39 4
WJets_HT 595.03 +- 5.48 61.78 +- 5.99 63.43 +- 1.79 13.33 +- 0.82 1.66 +- 2.04 1.42 +- 0.10 1.38 +- 0.16 1.26 +- 0.25 25
ZJets_HT 63.04 +- 0.76 23.05 +- 4.25 25.43 +- 0.48 1.28 +- 0.11 0.59 +- 1.56 0.52 +- 0.05 0.47 +- 0.10 0.40 +- 0.06 43
QCD_HT 13412.90 +- 302.17 4.21 +- 0.44 0.00 +- 0.00 1493.78 +- 100.84 1.10 +- 0.57 0.00 +- 0.00 0.47 +- 0.06 0.00 +- 0.00 0
T_tW 388.23 +- 11.74 10.33 +- 2.46 12.16 +- 2.08 14.64 +- 2.28 0.31 +- 2.45 0.46 +- 0.11 0.39 +- 0.11 0.00 +- 0.00 0
DYJets_HT 160.12 +- 0.88 0.72 +- 0.52 1.55 +- 0.09 3.90 +- 0.14 0.01 +- 0.04 0.04 +- 0.00 0.02 +- 0.01 0.03 +- 0.01 6
SUM 20482.65 +- 327.52 153.83 +- 9.22 196.88 +- 16.18 3192.16 +- 121.08 12.04 +- 4.25 29.22 +- 22.01 17.99 +- 1.59 12.47 +- 5.40 78
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Sample A (R<0.4, SB) B (R fit, SB) pred. B (R>0.4, SB) C (R<0.4, Sig.B.) D (R fit, Sig.B.) pred. D = B*C/A pred. D = B (R fit, SB) * C/A pred. D (R>0.4, Sig.B.) obs. Statistics in D
TTJets 291.89 +- 9.77 1.26 +- 0.34 2.29 +- 0.86 578.22 +- 13.75 1.68 +- 0.40 4.53 +- 1.72 2.49 +- 0.68 2.29 +- 0.86 7
WJets_HT 37.42 +- 1.37 1.90 +- 0.28 2.12 +- 0.33 13.59 +- 0.83 0.66 +- 0.19 0.77 +- 0.13 0.69 +- 0.11 0.86 +- 0.21 17
ZJets_HT 3.76 +- 0.19 0.75 +- 0.07 0.92 +- 0.09 1.38 +- 0.11 0.25 +- 0.05 0.34 +- 0.05 0.28 +- 0.04 0.27 +- 0.05 29
QCD_HT 4260.50 +- 170.30 0.08 +- 0.11 0.00 +- 0.00 1493.78 +- 100.84 0.03 +- 0.07 0.00 +- 0.00 0.03 +- 0.04 0.00 +- 0.00 0
T_tW 12.72 +- 2.12 0.03 +- 0.05 0.00 +- 0.00 14.89 +- 2.30 0.06 +- 0.11 0.00 +- 0.00 0.03 +- 0.06 0.00 +- 0.00 0
SUM 4606.28 +- 170.60 4.02 +- 0.46 5.33 +- 0.93 2101.85 +- 101.80 2.68 +- 0.47 5.64 +- 2.99 3.51 +- 0.70 3.41 +- 0.89  
 

Main backgrounds identified on tested samples - TTBar, QCD, W+Jets

http://hep.pha.jhu.edu:8080/susy/230
View topic | History: r25 < r24 < r23 < r22 | More topic actions...
 
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