Measurement of electroweak W + jets production and search for anomalous triple Gauge Boson couplings with the ATLAS experiment at s = 8TeV / von Julia Fischer. Wuppertal, 6. Mai 2016
Content
Introduction
Theoretical Background
Elementary Particles and Fundamental Interactions
Introduction to Quantum Field Theory
Quantum Electrodynamics
Electroweak Theory
Spontaneous Symmetry Breaking and the Brout-Englert-Higgs Mechanism
Quantum Chromodynamics
Triple Gauge Boson Couplings
Beyond-SM Contributions
Effective Field Theory Approach
Effective Lagrangian for Triple Gauge Boson Coupling
Basics of Proton-Proton Interactions
W-Boson Production and Decay at Hadron Colliders
The LHC and the ATLAS Experiment
Object Identification
Track and Vertex Reconstruction
Electron Reconstruction and Identification
Muon Reconstruction and Identification
Jet Reconstruction
Missing transverse Momentum
Monte Carlo Event Generation
Signal Signature and Background Processes
Signal Signature
QCD W + Jets Production
Backgrounds with Top Quarks
QCD Z + Jets Production
EW Z + Jets Production
Diboson Production
Background from Multijet Processes
Selection
Electron Selection
Muon Selection
Jet Selection
Basic W + Jets selection
Additional Selection Criteria sensitive to Vector Boson Fusion
Invariant Mass of the Dijet System
Rapidity Gap between the Tagging Jets
Lepton Centrality
Jet Centrality
Modelling in the VBF Region
Control Region Definition
Definition of High Mjj Phase Space
Data-driven Multijet Background
Uncertainties
Experimental Uncertainties
Theoretical Uncertainties
Signal Modelling
Luminosity Uncertainty
Uncertainties on Multijet Background
Cross Section Measurement
Limits on Anomalous Triple Gauge Couplings
Parameterisation of the Coupling Variation
Background Extrapolation
Limit Setting
Optimisation
Uncertainties
Limits on the effective Lagrangian
Effective Field Theory Interpretation
Comparison to other Limits
Summary and Outlook
Acknowledgement
Reconstruction Level Distributions in the VBF Phase Space
Samples for Limit Setting
Plots for Background Extrapolation
Bibliography