Search for Physics Beyond the Standard Model in Events with Opposite-sign Tau Pairs and Missing Energy

Abstract

A search for physics beyond the Standard Model with highly energetic jets, large momentum imbalance, and opposite sign tau pairs in the final state is performed using data samples with integrated luminosities of 1 fb-1 of pp collisions at √s = 7 TeV collected with the CMS detector at the LHC at CERN. The Standard Model backgrounds are estimated using data-driven techniques. The number of observed events is in good agreement with the predictions for Standard Model background processes and upper limits are set in the context of models of supersymmetry.

Approved Plots from SUS-11-007 ( click on plot to get .pdf )

Figure Abbreviated Caption
HighPt-Preselection-MET-anyLTau-met_LM13.png Fig 1a: Distribution of missing transverse energy ETmiss for SM MC and data after preselection. The MC distributions for the LM13 benchmark point are also shown.
HighPt-Preselection-MET-anyLTau-ht_LM13.png Fig 1b: Distribution of scalar sum of jet transverse energies (HT) for SM MC and data after preselection. The MC distributions for the LM13 benchmark point are also shown.
HighPt-Preselection-MET-anyLTau-p4_M_LM13.png Fig 1c: Distribution of dilepton invariant mass m(ll) for SM MC and data after preselection. The MC distributions for the LM13 benchmark point are also shown.
ht_vs_met_yields_MergedData.png Fig 2: Distribution of ETmiss vs HT for data. The high ETmiss (high HT) signal region is indicated with the blue dotted (red striped) region.
HT_0_AfterTTBarControl.png Fig 3a: HT distribution in the ttbar region.
20110721_QCDControlDphiMhtJet2log.png Fig 3b: Standard Model background enhanced sample depicting the effectiveness of the cut of ∆φ(MHT, j2) < 0.15 in selecting a high purity sample of QCD events.
ZinvJets_MHT.png Fig 3c: MHT distribution in the Z→μμ + jets control region used to estimate Z→νν + jets.
WJets_MET_subtraction.png Fig 3d: MET distribution in the W + jets control region after subtraction of all other backgrounds.
Met_0_AfterLooseControl.png Fig 4a: MET in a "loose" signal region without requiring τh isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data.
MHT_0_AfterLooseControl.png Fig 4b: MHT in a "loose" signal region without requiring hadronic tau isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data.
ReconstructableMassLS_0_AfterLooseControl.png Fig 4c: Invariant mass of the like-sign τ pair in a "loose" signal region without requiring hadronic tau isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data.
Dphi1_0_AfterLooseControl.png Fig 4d: ∆φ(j1,MHT) in a "loose" signal region without requiring τh isolation to enhance the statistics and compare the data-driven estimation of backgrounds with the observed distribution from data.

Link to SUS-11-007 PAS in CADI

Topic attachments
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PDFpdf 20110721_QCDControlDphiMhtJet2log.pdf r1 manage 24.4 K 2011-11-11 - 21:25 SinjiniSengupta  
PNGpng 20110721_QCDControlDphiMhtJet2log.png r1 manage 48.5 K 2011-11-11 - 21:25 SinjiniSengupta  
PDFpdf Dphi1_0_AfterLooseControl.pdf r1 manage 16.3 K 2011-11-11 - 21:29 SinjiniSengupta  
PNGpng Dphi1_0_AfterLooseControl.png r1 manage 29.5 K 2011-11-11 - 21:30 SinjiniSengupta  
PDFpdf HT_0_AfterTTBarControl.pdf r1 manage 16.3 K 2011-11-11 - 21:24 SinjiniSengupta  
PNGpng HT_0_AfterTTBarControl.png r1 manage 30.4 K 2011-11-11 - 21:24 SinjiniSengupta  
PDFpdf HighPt-Preselection-MET-anyLTau-ht_LM13.pdf r1 manage 18.4 K 2011-11-11 - 20:50 SinjiniSengupta  
PNGpng HighPt-Preselection-MET-anyLTau-ht_LM13.png r1 manage 39.4 K 2011-11-11 - 20:50 SinjiniSengupta  
PDFpdf HighPt-Preselection-MET-anyLTau-met_LM13.pdf r1 manage 18.0 K 2011-11-11 - 19:25 SinjiniSengupta  
PNGpng HighPt-Preselection-MET-anyLTau-met_LM13.png r1 manage 37.1 K 2011-11-11 - 19:38 SinjiniSengupta  
PDFpdf HighPt-Preselection-MET-anyLTau-p4_M_LM13.pdf r1 manage 18.3 K 2011-11-11 - 20:51 SinjiniSengupta  
PNGpng HighPt-Preselection-MET-anyLTau-p4_M_LM13.png r1 manage 43.4 K 2011-11-11 - 20:51 SinjiniSengupta  
PDFpdf MHT_0_AfterLooseControl.pdf r1 manage 21.1 K 2011-11-11 - 21:28 SinjiniSengupta  
PNGpng MHT_0_AfterLooseControl.png r1 manage 40.7 K 2011-11-11 - 21:28 SinjiniSengupta  
PDFpdf Met_0_AfterLooseControl.pdf r1 manage 20.2 K 2011-11-11 - 21:27 SinjiniSengupta  
PNGpng Met_0_AfterLooseControl.png r1 manage 36.2 K 2011-11-11 - 21:28 SinjiniSengupta  
PDFpdf ReconstructableMassLS_0_AfterLooseControl.pdf r1 manage 23.1 K 2011-11-11 - 21:29 SinjiniSengupta  
PNGpng ReconstructableMassLS_0_AfterLooseControl.png r1 manage 47.5 K 2011-11-11 - 21:29 SinjiniSengupta  
PDFpdf WJets_MET_subtraction.pdf r1 manage 17.0 K 2011-11-11 - 21:26 SinjiniSengupta  
PNGpng WJets_MET_subtraction.png r1 manage 30.2 K 2011-11-11 - 21:27 SinjiniSengupta  
PDFpdf ZinvJets_MHT.pdf r1 manage 16.6 K 2011-11-11 - 21:26 SinjiniSengupta  
PNGpng ZinvJets_MHT.png r1 manage 28.3 K 2011-11-11 - 21:26 SinjiniSengupta  
PDFpdf ht_vs_met_yields_MergedData.pdf r1 manage 21.4 K 2011-11-11 - 21:23 SinjiniSengupta  
PNGpng ht_vs_met_yields_MergedData.png r1 manage 83.4 K 2011-11-11 - 21:23 SinjiniSengupta  
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Topic revision: r3 - 2011-11-17 - AlexTapper
 
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