Electroweak physics at the large hadron collider with the atlas detector : standard model measurement, supersymmetry searches, excesses, and upgrade electronics

Electroweak physics at the large hadron collider with the atlas detector : standard model measurement, supersymmetry searches, excesses, and upgrade electronics / Elodie Resseguie.

This thesis discusses searches for electroweakly produced supersymmetric partners of the gauge and the Higgs bosons (gauginos and higgsinos) decaying to multiple leptons, using pp collisions at sqrt(s) = 13 TeV. The thesis presents an in-depth study of multiple searches, as well as the first 13 TeV...

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Bibliographic Details
Main Author: Resseguie, Elodie (Author)
Format: eBook
Language:English
Published: Cham, Switzerland : Springer, [2020]
Series:Springer theses.
Subjects:
Particles (Nuclear physics)
Quantum field theory.
Statistics.
particle physics.
statistics.
Quantum field theory
Statistics
Electronic books.
Online Access:Click for online access
Table of Contents:
  • Intro
  • Supervisor's Foreword
  • Abstract
  • Preface
  • Hardware: HCC Testing and Irradiation
  • Operation: TRT DAQ
  • Standard Model Measurement: WZ Cross Section
  • Electroweak Supersymmetry: Searches and Excess Follow-Up
  • References
  • Acknowledgements
  • Contents
  • 1 Introduction
  • 2 Theoretical Framework
  • 2.1 Introduction to the Standard Model
  • 2.1.1 Symmetries and Currents
  • 2.1.2 Electromagnetic Force: Quantum Electrodynamics
  • 2.1.3 Strong Force: Quantum Chromodynamics
  • 2.1.4 Weak Force and Electroweak Unification
  • 2.1.5 Spontaneous Symmetry Breaking and the Higgs Mechanism
  • 2.1.6 EWK Symmetry Breaking and the Higgs Mechanism
  • 2.2 Open Questions of the Standard Model
  • 2.3 Introduction to Supersymmetry
  • 2.3.1 Minimal Supersymmetric Standard Model
  • References
  • 3 LHC and the ATLAS Detector
  • 3.1 The Large Hadron Collider
  • 3.2 The ATLAS Detector
  • 3.2.1 The Inner Detector
  • 3.2.2 The Calorimeters
  • 3.2.3 The Muon Spectrometer
  • 3.3 Particle Reconstruction and Identification
  • 3.4 Trigger System
  • References
  • 4 HL-LHC Inner Detector Upgrade
  • 4.1 Motivation for the Detector Upgrade
  • 4.2 Inner Tracker: ITk
  • 4.3 Strips Read-Out System
  • 4.4 HCC130 Testing
  • 4.4.1 HCC130 Signals
  • 4.4.2 Testing Setup
  • 4.4.3 Description of the FPGA Code
  • 4.4.4 Functional Tests of the HCC130
  • 4.4.5 Testing the Analog Monitor (AM)
  • 4.5 HCC130 Irradiation
  • 4.5.1 Motivation: Current Increase at Low Total Ionizing Dose
  • 4.5.2 Facility and Setup
  • 4.5.3 Registers and Voltages Monitored
  • 4.5.4 Pre-irradiation Calibrations
  • 4.5.5 Results
  • 4.6 Future Improvements and Studies
  • References
  • 5 WpmZ Cross-Section Measurement at sqrts = 13 TeV
  • 5.1 Cross Section Methodology
  • 6.2 Wino-Bino Interpretation
  • 6.3 Higgsino Interpretation
  • References
  • 7 Search for Wino-Bino Production Decaying via WZ at sqrts=13 TeV
  • 7.1 Signal Signature
  • 7.2 Simplified Model Framework
  • 7.3 Overview of Backgrounds
  • 7.4 Data Set and MC Samples
  • 7.5 Object and Event Selection
  • 7.5.1 Object Selection
  • 7.5.2 Motivation for mTmin
  • 7.5.3 Event Selection
  • 7.6 Background Estimation
  • 7.6.1 WZ Background
  • 7.6.2 Reducible Background Estimation
  • 7.7 Uncertainties
  • 7.8 Two Leptons and Jets Final State
  • 7.8.1 Event Selection
  • 7.8.2 Background Modeling
  • 7.8.3 Results

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