Search for scalar and vector leptoquarks decaying into quarks and leptons of different generations / Volker Andreas Austrup. Wuppertal, [2022]
Content
Introduction
Standard Model of Particle Physics
Leptoquarks in Beyond Standard Model Theories
The ATLAS Detector at the Large Hadron Collider
Simulation of Proton-Proton Collisions
Event Reconstruction
Tracks and Vertices
Electrons
Muons
Jets
Flavour Tagging
Missing Transverse Momentum
Overlap Removal
Jet Reclustering
Derived Variables
Data and Simulated Event Samples
Event Categorisation
Baseline Event Selection
Kinematic Top Reweighting
Separation Between Signal and Background Processes
Background Estimation
Systematic Uncertainties
Statistical Techniques
Results of the Statistical Analysis
Background Normalisation
Nuisance Parameters
Post-Fit Distributions
Exclusion Limits
Comparison with Other Leptoquark Searches
Towards a Statistical Combination of Leptoquark Searches
Conclusion and Outlook
Appendix
Neural Network Input Variables in the Training Region
Correlations between Input Variables
Pre-Fit Neural Network Output Distributions in the Training Region
Neural Network Input Variables in Control Regions
Post-Fit Neural Network Output Distributions in the Signal Region
Bibliography