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
Inhalt
- 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