A search for ZH - µµbb production at the Tevatron

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Author(s): Lucian Stefan Ancu
Series: PhD Thesis
Publisher: FERMILAB
Year: 2010

Language: English
Pages: 130

Introduction......Page 9
The Standard Model......Page 11
Higgs mechanism......Page 16
Constraints from theory......Page 19
Experimental constraints......Page 20
Higgs production at the Tevatron......Page 23
The Tevatron......Page 27
Luminosity and beam lifetime......Page 30
The DØ detector......Page 32
Detector coordinate system......Page 33
Central tracking detectors......Page 34
Calorimetry......Page 39
Muon system......Page 42
Luminosity monitor......Page 45
Trigger and DAQ......Page 47
Muons......Page 53
Muon momentum smearing......Page 55
Jet finding algorithm......Page 56
Jet energy scale......Page 58
Shifting, smearing and removing of simulated jets - JSSR......Page 60
Primary Vertices......Page 62
B-tagging......Page 63
Monte Carlo......Page 67
Event selection......Page 68
Z+jets cross section......Page 71
Z pT reweighting......Page 73
Multijet background......Page 74
Trigger modeling......Page 76
Leading jets reweighting......Page 77
B-tagging......Page 78
Kinematic fit......Page 81
Spin related variables......Page 83
What are decision trees......Page 84
Training......Page 85
Pruning......Page 86
Boosting......Page 87
Implementation of BDTs for the search......Page 88
Limit setting procedure......Page 101
Systematics......Page 103
Shape systematics......Page 104
Results......Page 107
Conclusions and outlook......Page 111
Bibliography......Page 115
Summary......Page 123
Samenvatting......Page 125
Acknowledgements......Page 129
Curriculum vitae......Page 0