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

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114 CHAPTER 5: Estimating of the Jet Energy Scale Calibration Factort¯t t¯t W+jets Z+jets t QCD→ e + jets → other → l + jets → l + l − + jets → l + jets multijetsInitial 951.7 5473.2 1582609.6 154045.9 1188.8 1.9762447E+8 8.5413535E+7Pre-Selection 777.2 2076.4 7607.7 2953.6 221.0 2119019.0 1065204PV 777.1 2076.0 7606.2 2952.8 221.0 2118614 1065116One Electron 425.0 149.1 3234.6 1255.4 64.6 3384.8 8485Muon Veto 423.8 111.6 3232.6 1252.7 63.4 3384.2 8441Z Veto 420.9 106.6 3228.2 693.8 62.9 3381.2 8011Conversion Rejection 397.0 100.1 3023.2 648.4 59.3 1230.5 5118Four Jets 194.0 30.5 159.2 38.6 10.6 65.8 402One B Jet 146.8 23.4 15.1 3.5 7.5 4.6 176Table 5.15: Table of event selection cuts. The number of events are equivalent to an integrated luminosity of 36.1pb −1 .Data
CHAPTER 5: Estimating of the Jet Energy Scale Calibration Factor 115#Events80706050403020tt+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)#Events3530252015101050 20 40 60 80 100 120 140 160 180 200Selected Electron P T(GeV)-2 -1 0 1 2Selected Electron ηFigure 5.23: The distributions of the selected electron transverse momentum and pseudorapidity.The collision data events are overimposed to the simulation for comparisonpurpose.#Events706050tt+jets semi-ele (144.1 entries)tt+jets other (23.0 entries)SingleTop+jets (7.4 entries)Z+jets (3.4 entries)W+jets (14.3 entries)QCD (4.6 entries)Data (36.1 pb-1) (170.0 entries)403020100 0.02 0.04 0.06 0.08 0.1Selected Electron RelIsoFigure 5.24: The distribution of the relative isolation of the selected electron. Thecollision data events 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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Page 141 and 142: SummaryJets appear in the final sta
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Measurement of the Jet Energy Scale in the CMS experiment ... - IIHE

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