Measurement of the Jet Energy Scale in the CMS experiment ... - IIHE

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120 CHAPTER 5: Estimating of the Jet Energy Scale Calibration Factor#Events140120100tt+jets semi-ele (146.8 entries)tt+jets other (23.4 entries)SingleTop+jets (7.5 entries)Z+jets (3.5 entries)W+jets (15.1 entries)QCD (4.6 entries)Data (36.1 pb-1) (176.0 entries)80604020#Events80706050403020100 0.5 1 1.5 2 2.5 3AngleThWh#Events50403020100 0.5 1 1.5 2 2.5 3AngleThBh0 0.5 1 1.5 2 2.5 3AngleThBl#Events5040#Events706050304020301020100 0.5 1 1.5 2 2.5 3AngleThEl0 0.5 1 1.5 2 2.5 3AngleBlEl#Events10080#Events454035603025402015201050 0.2 0.4 0.6 0.8 1ThPtOverSumPt0 0.2 0.4 0.6 0.8 1btagFigure 5.30: The distribution of the observables which are calculated using the fourvectorschosen by the Likelihood Ratio method. These variables were used for trainingthe Likelihood Ratio method. The collision data events are overimposed to the simulationfor comparison purpose.
CHAPTER 5: Estimating of the Jet Energy Scale Calibration Factor 121#Events605040tt+jets semi-ele (146.9 entries)tt+jets other (23.4 entries)SingleTop+jets (7.5 entries)Z+jets (3.5 entries)W+jets (15.1 entries)QCD (4.6 entries)Data (36.1 pb-1) (176.0 entries)#Events353025tt+jets semi-ele (146.9 entries)tt+jets other (23.4 entries)SingleTop+jets (7.5 entries)Z+jets (3.5 entries)W+jets (15.1 entries)QCD (4.6 entries)Data (36.1 pb-1) (176.0 entries)30202015101050 50 100 150 200 250 300m W (GeV)0 100 200 300 400 500 600(GeV)m topFigure 5.31: The mass distributions of the W boson (left) and the top quark (right)using the four-vectors returned by the MVA method. The collision data events areoverimposed to the simulation for comparison purpose.∆E b1.41.31.21.110.90.80.7Data_143827_440_6070423750.60.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.40∆E lFigure 5.32: The kinematic fit output for a typical collision data event. The thirddimension contains the probability of the kinematic fit P KinFit (∆E l , ∆E b ).0.90.80.70.60.50.40.30.20.1#Events200180160140120tt+jets semi-ele (146.9 entries)tt+jets other (23.4 entries)SingleTop+jets (7.5 entries)Z+jets (3.5 entries)W+jets (15.1 entries)QCD (4.6 entries)Data (36.1 pb-1) (176.0 entries)#Events21010100806014020-1100 0.2 0.4 0.6 0.8 1KinFit Probability without corrections0 0.2 0.4 0.6 0.8 1KinFit Probability without correctionsFigure 5.33: The distribution of the kinematic fit probability when no correction isapplied shown in normal scale (left) and logarithmic scale (right). The collision dataevents are overimposed to the simulation for comparison purpose.
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Vrije Universiteit BrusselFaculteit
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IntroductionThe Standard Model of p
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Chapter 1The Standard Model of Part
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CHAPTER 1: The Standard Model of Pa
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Chapter 2The CMS experiment at the
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CHAPTER 2: The CMS experiment at th
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Chapter 3Object ReconstructionThe e
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Chapter 4Reconstructing and Selecti
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CHAPTER 4: Reconstructing and Selec
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Chapter 5Estimating of the Jet Ener
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Measurement of the Jet Energy Scale in the CMS experiment ... - IIHE

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