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
Figure_001-a.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.
Figure_001-b.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.
Figure_001-c.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.
Figure_002.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.
Figure_003-a.png Fig 3a: HT distribution in the ttbar region.
Figure_003-b.png Fig 3b: Standard Model background enhanced sample depicting the effectiveness of the cut of abs{∆φ(MHT, j2)} < 0.15 in selecting a high purity sample of QCD events.
Figure_003-c.png Fig 3c: MHT distribution in the Z→μμ + jets control region used to estimate Z→νν + jets.
Figure_003-d.png Fig 3d: MET distribution in the W + jets control region after subtraction of all other backgrounds.
Figure_004-a.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.
Figure_004-b.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.
Figure_004-c.png Fig 4c: Invariant mass of the like-sign τ pairs 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.
Figure_004-d.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.
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PDFpdf Figure_001-a.pdf r1 manage 18.2 K 2011-12-02 - 18:16 SinjiniSengupta  
PNGpng Figure_001-a.png r1 manage 42.4 K 2011-12-02 - 18:38 SinjiniSengupta  
PDFpdf Figure_001-b.pdf r1 manage 18.7 K 2011-12-02 - 18:16 SinjiniSengupta  
PNGpng Figure_001-b.png r1 manage 44.6 K 2011-12-02 - 18:40 SinjiniSengupta  
PDFpdf Figure_001-c.pdf r1 manage 18.6 K 2011-12-02 - 18:17 SinjiniSengupta  
PNGpng Figure_001-c.png r1 manage 49.4 K 2011-12-02 - 18:40 SinjiniSengupta  
PDFpdf Figure_002.pdf r1 manage 21.4 K 2011-12-02 - 18:17 SinjiniSengupta  
PNGpng Figure_002.png r1 manage 93.1 K 2011-12-02 - 18:40 SinjiniSengupta  
PDFpdf Figure_003-a.pdf r1 manage 16.3 K 2011-12-02 - 18:17 SinjiniSengupta  
PNGpng Figure_003-a.png r1 manage 38.9 K 2011-12-02 - 18:41 SinjiniSengupta  
PDFpdf Figure_003-b.pdf r1 manage 25.0 K 2011-12-02 - 18:18 SinjiniSengupta  
PNGpng Figure_003-b.png r1 manage 59.2 K 2011-12-02 - 18:41 SinjiniSengupta  
PDFpdf Figure_003-c.pdf r1 manage 16.9 K 2011-12-02 - 18:18 SinjiniSengupta  
PNGpng Figure_003-c.png r1 manage 34.2 K 2011-12-02 - 18:41 SinjiniSengupta  
PDFpdf Figure_003-d.pdf r1 manage 17.2 K 2011-12-02 - 18:19 SinjiniSengupta  
PNGpng Figure_003-d.png r1 manage 36.6 K 2011-12-02 - 18:42 SinjiniSengupta  
PDFpdf Figure_004-a.pdf r1 manage 20.3 K 2011-12-02 - 18:19 SinjiniSengupta  
PNGpng Figure_004-a.png r1 manage 47.1 K 2011-12-02 - 18:42 SinjiniSengupta  
PDFpdf Figure_004-b.pdf r1 manage 21.2 K 2011-12-02 - 18:20 SinjiniSengupta  
PNGpng Figure_004-b.png r1 manage 49.6 K 2011-12-02 - 18:42 SinjiniSengupta  
PDFpdf Figure_004-c.pdf r1 manage 23.2 K 2011-12-02 - 18:20 SinjiniSengupta  
PNGpng Figure_004-c.png r1 manage 58.3 K 2011-12-02 - 18:43 SinjiniSengupta  
PDFpdf Figure_004-d.pdf r1 manage 16.5 K 2011-12-02 - 18:21 SinjiniSengupta  
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