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Public page of the EWK Z+2j analysis (under re-construction) Feynman.png

The public PAS is available here. The Paper version is available on the arxiv and submitted to JHEP.

* Candidate signal event display: Recorded data pp collision at √s = 7 TeV, run 163759, event 41507939 featuring a central di-muon system with invariant mass 90.2 GeV and a forward-backward di-jet system with invariant mass 1.4 TeV. The first display shows a 3D view of the event, while the second one shows a rφ display, where the trasverse momentum balance of the 2μ + 2jets system is visible.
VBFZ-163759_41507939_63_3D.png VBFZ-163759_41507939_63_RhoPhi.png

* figures from the paper in png format *


  • Feynman.pngFeynman2.pngFeynman3.png
Figure 1: Representative diagrams for EW lljj production (for l=μ): VBF (left), bremsstrahlung (middle), and multiperipheral (right).


  • DY4.png
Figure 2: Representative diagram for Drell–Yan production in association with two jets.


  • detajj.pngptj.png
Figure 3: Distribution of the absolute difference in the pseudorapidity of the tagging jets, ∆ηj1j2 = |ηj1 − ηj2 | (left) and the tagging jet pT for both jets, j1 and j2 (right) for the DY μμjj, EW μμjj, and VBF Higgs boson production processes.


  • mumu_ptj1.png mumu_ptj2.png
Figure 4: The pTj1 (left) and pTj2 (right) distributions after applying the Zμμ selection and the TT jet tagging requirement TJ1. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panels show the ratio of data over the expected contribution of the signal plus background. The region between the two lines with the labels JES Up and JES Down shows the 1 σ uncertainty of the simulation prediction due to the jet energy scale uncertainty. The data points are shown with the statistical uncertainties.

  • mumu_deta.pngmumu_ptz.png
Figure 5: The absolute difference in the pseudorapidity of the two tagging jets (left), and the dimuon pT (right) after the Zμμ selection and the tagging jet requirement TJ1. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panels show the ratio of data over the expected contribution of the signal plus back- ground. The region between the two lines with the labels JES Up and JES Down shows the 1 σ uncertainty of the simulation prediction due to the jet energy scale uncertainty. The data points are shown with the statistical uncertainties.


  • ee_stjHT.pngmumu_stjHT.png
Figure 6: The HT distribution of the three leading soft track jets in the pseudorapidity interval between the tagging jets with pTj1,j2 > 65, 40GeV in DY Zjj events for dielectron (left) and dimuon (right) channels. The bottom panels show the corresponding data/MC ratios. The data points are shown with the statistical uncertainties.

other figures from the PAS


  • Figure_006-a.pngFigure_006-b.png
Figure 6: Left: the dimuon pT after selections ”Zμμ” and (1) for the μ+μ− mode. Right: the mj1j2 after selections ”Zμμ”, (1) and (2) for the μ+μ− mode. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • ee_ptj1.pngee_ptj2.png
Figure 7: The pTj1 (left) and pTj2 (right) after selections ”Zee” and (1) for the e+e− mode. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • ee_etaj.pngee_yast.png
Figure 8: The |ηj| and |y*| after selections ”Zee” and (1) for the e+e− mode. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • ee_deta.pngee_dphi.png
Figure 9: The absolute difference in the pseudorapidity of the two tagging jets (left) and the difference in the azimuthal angles of two tagging jets (right) after selections ”Zee” and (1) for the e+e− mode. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • ee_ptz.pngee_mjj.png
Figure 10: Left: the dimuon pT after selections ”Zee” and (1) for the e+e− mode. Right: the mj1j2 after selections ”Zee”, (1) and (2) for the e+e− mode. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • ee_stjHT.pngmumu_stjHT.png
Figure 11: The HT of the three leading pT soft track-jet in the pseudorapidity difference between the two leading pT jets of pTj1,j2 > 65, 40 GeV in the Z plus two jet events. (left) Di-electron channel. (right) Dimuon channel.


  • softHT_vs_Mjj.pngsoftHT_vs_dEta_jj.png
Figure 12: Average HT of the three leading pT soft track-jet in the pseudorapidity difference between the two leading pT jets of pTj1,j2 > 65, 40 GeV in the Z plus two jet events versus (left) the dijet invariant mass, and (right) the dijet Δηjj separation for both the di-electron and di-muon channels.


  • nJets_vs_HT.pngcosDPhi_vs_HT.png
Figure 13: (left) Average number of jets with pT > 40 GeV versus the total HT of jets with pT > 40 GeV in the Z plus at least one jet events (right). The average cosΔφjj versus the total HT of jets with pT > 40 GeV in selected the Z plus two jets events.


  • nJets_vs_dEta_jj.pngcosDPhi_vs_dEta_jj.png
Figure 14: (left) Average number of jets with pT > 40 GeV versus the Δηjj in the Z plus two jets events (right). The average cos Δφjj versus the Δηjj separation in the Z plus two jets events.


  • no.png
Figure 15: The mj1j2 distribution after selections ”Zμμ”, (1)-(2) (see Section 3) The expected contributions from the dominant DY μμjj background and the EWK μμjj signal processes are evaluated from the fit and the contributions from the small ttbar and diboson backgrounds are estimated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • Figure_016-a.pngFigure_016-b.png
Figure 16: The BDTD output distributions for the μ+μ− mode (left) and the e+e− mode (right) after selections ”Zμμ and ”Zee” correspondingly and the jet requirement (1). The expected contributions from the signal and background processes are evaluated from simulation. The bottom panels show the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • Figure_017-a.pngFigure_017-b.png
Figure 17: The BDTD output distributions for the μ+μ− mode (left) and the e+e− mode (right) after selections ”Zμμ” and ”Zee” correspondingly and the jet requirement (1). The expected contributions from the dominant DY lljj background and the EWK lljj signal processes are evaluated from the fit and the contributions from the small ttbar and diboson backgrounds are estimated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.


  • Figure_018-a.pngFigure_018-b.png
Figure 18: The gluon likelihood of the first (left) and second (right) tagging jets in the di-electron channel after the ”Zee” selection and requirement pTj1 > 65 GeV, pTj2 > 40 GeV, |eta_j| < 3.6. The expected contributions from the signal and background processes are evaluated from simulation. The bottom panel shows the ratio of data over the expected contribution of the signal plus backgrounds along with the statistical uncertainties.

-- MariaToms - 18-Dec-2012

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng DY4.png r1 manage 16.6 K 2013-06-03 - 15:30 PaoloAzzurri  
PNGpng Feynman.png r2 r1 manage 13.7 K 2013-06-03 - 21:31 PaoloAzzurri  
PNGpng Feynman2.png r2 r1 manage 12.2 K 2013-06-03 - 21:34 PaoloAzzurri  
PNGpng Feynman3.png r2 r1 manage 12.1 K 2013-06-03 - 21:34 PaoloAzzurri  
PNGpng Figure_004-a.png r1 manage 97.9 K 2012-11-13 - 10:00 MariaToms  
PNGpng Figure_004-b.png r1 manage 96.3 K 2012-11-13 - 10:00 MariaToms  
PNGpng Figure_005-a.png r1 manage 102.8 K 2012-11-13 - 10:03 MariaToms  
PNGpng Figure_005-b.png r1 manage 118.8 K 2012-11-13 - 10:03 MariaToms  
PNGpng Figure_006-a.png r1 manage 97.2 K 2012-11-13 - 10:05 MariaToms  
PNGpng Figure_006-b.png r1 manage 103.1 K 2012-11-13 - 10:05 MariaToms  
PNGpng Figure_015.png r1 manage 107.7 K 2012-11-13 - 10:11 MariaToms  
PNGpng Figure_016-a.png r1 manage 102.3 K 2012-11-13 - 10:15 MariaToms  
PNGpng Figure_016-b.png r1 manage 111.1 K 2012-11-13 - 10:15 MariaToms  
PNGpng Figure_017-a.png r1 manage 102.7 K 2012-11-13 - 10:17 MariaToms  
PNGpng Figure_017-b.png r1 manage 111.5 K 2012-11-13 - 10:17 MariaToms  
PNGpng VBFZ-163759_41507939_63_3D.png r1 manage 271.8 K 2013-04-26 - 10:13 PaoloAzzurri Event candidate
PNGpng VBFZ-163759_41507939_63_RhoPhi.png r1 manage 40.2 K 2013-04-26 - 11:03 PaoloAzzurri rhophi
PNGpng cosDPhi_vs_HT.png r1 manage 91.1 K 2012-11-01 - 13:56 MariaToms Figure 13
PNGpng cosDPhi_vs_dEta_jj.png r1 manage 93.3 K 2012-11-01 - 14:00 MariaToms Figure 14
PNGpng detajj.png r2 r1 manage 89.9 K 2013-06-03 - 15:40 PaoloAzzurri  
PNGpng ee_BDTD_No_fit.png r1 manage 106.6 K 2012-11-01 - 14:17 MariaToms Figure 16
PNGpng ee_BDTD_fit.png r1 manage 107.0 K 2012-11-01 - 14:20 MariaToms Figure 17
PNGpng ee_deta.png r1 manage 111.0 K 2012-11-01 - 11:52 MariaToms Figure 9
PNGpng ee_dphi.png r1 manage 119.5 K 2012-11-01 - 11:52 MariaToms Figure 9
PNGpng ee_etaj.png r1 manage 102.3 K 2012-11-01 - 11:47 MariaToms Figure 8
PNGpng ee_mjj.png r1 manage 110.5 K 2012-11-01 - 11:55 MariaToms Figure 10
PNGpng ee_ptj1.png r1 manage 99.8 K 2012-11-01 - 11:41 MariaToms Figure 7
PNGpng ee_ptj2.png r1 manage 103.3 K 2012-11-01 - 11:41 MariaToms Figure 7
PNGpng ee_ptz.png r1 manage 101.9 K 2012-11-01 - 11:55 MariaToms Figure 10
PNGpng ee_stjHT.png r1 manage 107.1 K 2012-11-01 - 13:40 MariaToms Figure 11
PNGpng ee_yast.png r1 manage 107.5 K 2012-11-01 - 11:47 MariaToms Figure 8
PNGpng mumu_BDTD_No_fit.png r1 manage 91.1 K 2012-11-01 - 14:17 MariaToms Figure 16
PNGpng mumu_BDTD_fit.png r1 manage 91.4 K 2012-11-01 - 14:20 MariaToms Figure 17
PNGpng mumu_deta.png r2 r1 manage 121.1 K 2013-06-03 - 15:48 PaoloAzzurri  
PNGpng mumu_dphi.png r1 manage 143.3 K 2012-11-01 - 11:14 MariaToms Figure 5
PNGpng mumu_etaj.png r1 manage 108.2 K 2012-10-31 - 15:30 MariaToms Figure 4
PNGpng mumu_mjj.png r1 manage 92.0 K 2012-11-01 - 11:22 MariaToms Figure 6
PDFpdf mumu_mjj_fit.pdf r1 manage 17.8 K 2012-10-30 - 15:37 MariaToms  
PNGpng mumu_mjj_fit.png r2 r1 manage 92.7 K 2012-11-01 - 14:06 MariaToms Figure 15
PNGpng mumu_ptj1.png r2 r1 manage 113.5 K 2013-06-03 - 15:45 PaoloAzzurri  
PNGpng mumu_ptj2.png r2 r1 manage 116.2 K 2013-06-03 - 15:45 PaoloAzzurri  
PNGpng mumu_ptz.png r2 r1 manage 115.7 K 2013-06-03 - 15:48 PaoloAzzurri  
PNGpng mumu_stjHT.png r1 manage 105.9 K 2012-11-01 - 13:40 MariaToms Figure 11
PNGpng mumu_yast.png r1 manage 106.7 K 2012-10-31 - 15:30 MariaToms Figure 4
PNGpng nJets_vs_HT.png r1 manage 87.4 K 2012-11-01 - 13:56 MariaToms Figure 13
PNGpng nJets_vs_dEta_jj.png r1 manage 78.2 K 2012-11-01 - 14:00 MariaToms Figure 14
PNGpng no.png r1 manage 127.7 K 2012-12-18 - 11:52 MariaToms Fig. 15 correct version
PNGpng ptj.png r2 r1 manage 84.4 K 2013-06-03 - 15:40 PaoloAzzurri  
PNGpng softHT_vs_Mjj.png r1 manage 62.7 K 2012-11-01 - 13:49 MariaToms Figure 12
PNGpng softHT_vs_dEta_jj.png r1 manage 76.4 K 2012-11-01 - 13:49 MariaToms Figure 12
GIFgif work.gif r1 manage 7.0 K 2013-06-03 - 15:54 PaoloAzzurri  
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Topic revision: r20 - 2013-06-03 - PaoloAzzurri
 
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