de
en
Close
Detailsuche
Bibliotheken
Projekt
Imprint
Privacy Policy
de
en
Close
Imprint
Privacy Policy
jump to main content
Search Details
Quicksearch:
OK
Result-List
Title
Title
Content
Content
Page
Page
Search the document
Search for top squarks in compressed scenarios of supersymmetry with the ATLAS experiment / Daniela Börner. Wuppertal, [2018?]
Content
Leere Seite
I Introduction
II The Theory of Particle Physics
The Standard Model
General Introduction
Electroweak Theory
The Higgs Mechanism
Quantum Chromodynamics
Experimental Success of the Standard Model
Limitations of the Standard Model
Supersymmetry
Phenomenology of the MSSM
Higgs Mass Corrections
Supersymmetric Models
Bino LSP
Higgsino LSP
Well-tempered Neutralino LSP
Event Simulation
Simulation of pp Collisions
Factorisation Theorem
Matrix Element
Parton Shower
Matching and Merging
Hadronisation
Underlying Event and Pile-Up
ATLAS Detector Simulation
Statistical Techniques
Unfolding
Hypothesis Testing and Profile Likelihood Fit
Boosted Decision Trees
III The ATLAS Experiment at the Large Hadron Collider
The Large Hadron Collider
The ATLAS Experiment
ATLAS Coordinate System
Inner Detector
Calorimeters
Muon Spectrometer
Magnets
Luminosity Measurement
Trigger System
Minimum Bias Trigger
Data Quality
Event Reconstruction
Tracks and Primary Vertex
Electrons
Muons
Jets
Flavour Tagging
Hadronically Decaying Leptons
Missing Transverse Momentum
Overlap Removal
IV Charged-particle Measurements
Introduction
Event Selection
Data and Monte Carlo Samples
Event Selection
Background Estimation
Trigger and Vertex Reconstruction Efficiency
Track Reconstruction Efficiency
Correction Procedure
Detailed Unfolding Procedure
Closure Tests
Systematic Uncertainties
Results and Outlook
Results
Summary and Comparison
V Search for Supersymmetry
Introduction
Simplified Supersymmetric Model
Basic Strategy
Common Analysis Strategy
Data and Simulated Samples
Preselection
Variables Separating between Signal and Background
Systematic Uncertainties
Experimental Systematic Uncertainties
Theoretical Systematic Uncertainties
Intermediate Top Squark Masses
Optimisation Algorithm
tN_med Signal Region
Background Estimation
Control Regions
Validation Regions
Impact of Systematic Uncertainties
Results
Combination
Compressed Region
Analysis Strategy
Training of the BDT
Background Estimation
Validation
Validation with 2L and 1L1 Selections
Summary of the BDT Validation
Impact of Systematic Uncertainties
Fit Setup
Results
Comparison to Similar Search Regions
Low Mass BDT
Comparison of the Full Result
VI Conclusion
Appendix
Monitoring for the IBL Detector
Cross-talk Scan
Quick Status – A Monitoring Tool
Charged-particle Measurements
Closure Tests
Comparison Including Strange Baryons
Comparison with Other Generators
Search for Supersymmetry
Preselection Plots for tN_med
Control Region Plots for tN_med
Validation Region Plots for tN_med
Modelling in the tN_med Signal Region
Combination of tN_med and the bCsoft Selections
Preselection Plots for the Compressed Signal Region
Validation Plots
VR for Discovery Fit Setup
Validation Plots for Low BDT Values
Profile Plots
Correlation Plots for BDT Input Variables
JES Dependence of the BDT Fit
Results for Low Mass BDT
Bibliography
Acknowledgements