Model Independent Search for Deviations from the Standard Model ...

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Contents 4 The Data Sample and Object Identication 35 4.1 The Data Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.2 The Set of Triggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4.3 Object Identication and Selection Cuts . . . . . . . . . . . . . . . . . . . . 37 4.3.1 Electron Candidates . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 4.3.2 Photon Candidates . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 4.3.3 Muon Candidates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 4.3.4 Jet Candidates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 4.3.5 Missing Transverse Energy (MET) . . . . . . . . . . . . . . . . . . . 49 5 Monte Carlo Samples 51 5.1 MC Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 5.2 SM-Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 5.3 Energy Scale and Smearing . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 6 Global Data-Monte Carlo Comparison 61 6.1 MC-Correction-Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.1.1 χ 2 -Fit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.1.2 Systematic Uncertainty of the MC-Correction-Factor . . . . . . . . . 64 6.2 QCD-background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 6.3 Comparison of the Total Number of Events . . . . . . . . . . . . . . . . . . 73 6.3.1 Muon Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 6.3.2 Electron Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 7 Search Algorithm 89 7.1 Region of Interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 7.2 General Signicance of the Deviation . . . . . . . . . . . . . . . . . . . . . . 93 7.2.1 Denition of the Estimator . . . . . . . . . . . . . . . . . . . . . . . 93 7.2.2 The Principle of Dicing Data . . . . . . . . . . . . . . . . . . . . . . 94 8 Systematic Uncertainties 97 8.1 MC-Correction-Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 8.2 MC Cross Section Uncertainty. . . . . . . . . . . . . . . . . . . . . . . . . . 98
Contents 8.3 QCD-Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 8.4 Energy Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 8.5 Smearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 8.6 Summary of the Dierent Contributions . . . . . . . . . . . . . . . . . . . . 103 9 Results and Interpretation 105 9.1 Muon Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 9.2 Electron Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 10 Conclusion 127
Page 1: Model Independent Search for Deviat
Page 7 and 8: Introduction Science attempts to de
Page 10 and 11: 4 The Theoretical Foundations 1.1.2
Page 12 and 13: 6 The Theoretical Foundations e - e
Page 14 and 15: 8 The Theoretical Foundations Figur
Page 16 and 17: 10 The Theoretical Foundations Figu
Page 18 and 19: 12 The Theoretical Foundations 1.3
Page 20 and 21: 14 The Theoretical Foundations cont
Page 22 and 23: 16 Tevatron and the DØ-Detector Fi
Page 28 and 29: 22 Tevatron and the DØ-Detector 1/
Page 30 and 31: 24 Tevatron and the DØ-Detector 2.
Page 32 and 33: 26 Tevatron and the DØ-Detector of
Page 35 and 36: Chapter 3 The Concept of Model Inde
Page 37 and 38: 3.2. Concept 31 viations from SM. T
Page 39: 3.2. Concept 33 cal problem as many
Page 42 and 43: 36 The Data Sample and Object Ident
Page 50 and 51: muon_trackchi_pt_py Entries 5727 mu
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jet_eta_phi_px Entries 29768 Mean j
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Chapter 5 Monte Carlo Samples 5.1 M
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5.1. MC Generator 53 Figure 5.3: Sc
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5.2. SM-Processes 55 SM-process (M
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5.3. Energy Scale and Smearing 57 J
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5.3. Energy Scale and Smearing 59 e
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62 General Data↔MonteCarlo Compar
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90 Search Algorithm oer sucient sen
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92 Search Algorithm probability 0.0
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94 Search Algorithm 7.2.2 The Princ
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Chapter 8 Systematic Uncertainties
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8.3. QCD-Background 99 Whendicingda
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8.5. Smearing 101 Here N j i (σ+ )
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8.6. Summary of the Different Contr
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106 Results and Interpretation Figu
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108 Results and Interpretation Even
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110 Results and Interpretation even
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112 Results and Interpretation Anat
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114 Results and Interpretation To c
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116 Results and Interpretation Resu
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120 Results and Interpretation Even
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124 Results and Interpretation Resu
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Chapter 10 Conclusion In this diplo
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Appendix A Trigger Denitions Electr
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131 Muon-triggers for lists up to v
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134 Bibliography [19] A. Aktas et a
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Acknowledgements So, the end is nea
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