| Description |
1 online resource (284 pages) |
| Series |
Springer Theses |
|
Springer theses.
|
| Contents |
Intro -- Supervisor's Foreword -- Abstract -- Acknowledgements -- Contents -- Acronyms -- 1 Preamble -- 2 Introduction to Standard Model and Supersymmetry -- 2.1 The Standard Model of Particle Physics -- 2.1.1 Particle Content of the Standard Model -- 2.1.2 Interactions and Gauge Invariance -- 2.1.3 Strong Interaction -- 2.1.4 Electroweak Interaction and Higgs-Englert-Brout Mechanism -- 2.1.5 Measured Properties of the Higgs Boson -- 2.2 Limitations of the Standard Model and How to Extend It -- 2.2.1 Unexplained Phenomena -- 2.2.2 Aesthetic Shortcomings |
|
2.2.3 Extensions of the Standard Model -- 2.3 Supersymmetry -- 2.3.1 Supermultiplets -- 2.3.2 Minimal Supersymmetric Standard Model -- 2.3.3 Natural SUSY -- 2.3.4 SUSY Breaking in the MSSM -- 2.3.5 SUSY-Breaking Mechanisms -- 2.3.6 Phenomenological MSSM -- References -- 3 LHC and ATLAS -- 3.1 The Large Hadron Collider -- 3.1.1 A Circular Hadron Collider -- 3.1.2 Magnet System -- 3.1.3 Resonant Cavities -- 3.1.4 Luminosity and Operational Parameters -- 3.1.5 Accelerator Complex -- 3.1.6 Experiments at the LHC -- 3.2 Detectors for Collider Physics -- 3.2.1 Identification of Particles |
|
3.2.2 Tracking and Spectrometry -- 3.2.3 Calorimetry -- 3.2.4 Detecting Photons -- 3.3 The ATLAS Experiment -- 3.3.1 Coordinate System -- 3.3.2 Magnet System -- 3.3.3 Inner Detector -- 3.3.4 Calorimeters -- 3.3.5 Muon Spectrometer -- 3.3.6 Luminosity Measurement -- 3.3.7 Trigger System -- 3.3.8 ATLAS Operation -- References -- 4 Proton-Proton Interactions and Their Simulation -- 4.1 Proton-Proton Interactions -- 4.1.1 Factorization Theorem -- 4.1.2 Parton Density Functions -- 4.2 Event Simulation -- 4.2.1 Matrix Element -- 4.2.2 Parton Shower -- 4.2.3 Matching -- 4.2.4 Hadronization |
|
4.2.5 Underlying Event -- 4.2.6 Pileup -- 4.3 Monte Carlo Generators -- 4.3.1 General Purpose Generators -- 4.3.2 Matrix Elements Generators -- 4.3.3 Specialized Generators -- 4.4 Detector Simulation -- References -- 5 Event Reconstruction -- 5.1 Tracks and Primary Vertices -- 5.2 Jets -- 5.2.1 Clusters -- 5.2.2 Jet-Finding Algorithms -- 5.2.3 Jet Calibration -- 5.2.4 Jet Vertex Tagger -- 5.2.5 Jet Cleaning -- 5.2.6 Re-clustered Jets -- 5.3 Jets from B-Hadrons -- 5.3.1 B-Tagging Calibration and Uncertainties -- 5.4 Muons -- 5.4.1 Muon Reconstruction -- 5.4.2 Muon Identification |
|
5.4.3 Muon Efficiency Measurement -- 5.4.4 Muon Isolation -- 5.4.5 Muon Momentum Calibration -- 5.5 Electrons -- 5.5.1 Electron Reconstruction -- 5.5.2 Electron Identification -- 5.5.3 Electron Isolation -- 5.5.4 Electron Efficiency Measurement -- 5.5.5 Electron Energy Scale and Resolution -- 5.6 Missing Transverse Momentum -- References -- 6 Statistical Methods -- 6.1 Statistical Inference -- 6.2 Parameter Estimation -- 6.2.1 Estimators -- 6.2.2 The Maximum Likelihood Estimator -- 6.2.3 Binned Likelihood Fit with Systematic Uncertainties -- 6.2.4 Profiled Likelihood Ratio |
| Summary |
This PhD thesis documents two of the highest-profile searches for supersymmetry performed at the ATLAS experiment using up to 80/fb of proton-proton collision data at a center-of-mass energy of 13 TeV delivered by the Large Hadron Collider (LHC) during its Run 2 (2015-2018). The signals of interest feature a high multiplicity of jets originating from the hadronisation of b-quarks and large missing transverse momentum, which constitutes one of the most promising final state signatures for discovery of new phenomena at the LHC. The first search is focused on the strong production of a pair of gluinos, with each gluino decaying into a neutralino and a top-antitop-quark pair or a bottom-antibottom-quark pair. The second search targets the pair production of higgsinos, with each higgsino decaying into a gravitino and a Higgs boson, which in turn is required to decay into a bottom-antibottom-quark pair. Both searches employ state-of-the-art experimental techniques and analysis strategies at the LHC, resulting in some of the most restrictive bounds available to date on the masses of the gluino, neutralino, and higgsino in the context of the models explored |
| Notes |
"Doctoral Thesis accepted by Universitat Autònoma de Barcelona, Barcelona, Spain." |
|
6.3 Hypothesis Testing |
|
Print version record |
| Subject |
Particles (Nuclear physics)
|
|
Supersymmetry.
|
|
Quantum field theory.
|
|
Mathematical physics.
|
|
Elementary Particles
|
|
particle physics.
|
|
Mathematical physics.
|
|
Quantum physics (quantum mechanics & quantum field theory)
|
|
Science -- Mathematical Physics.
|
|
Science -- Nuclear Physics.
|
|
Mathematical physics
|
|
Particles (Nuclear physics)
|
|
Quantum field theory
|
|
Supersymmetry
|
| Genre/Form |
Electronic books
|
| Form |
Electronic book
|
| ISBN |
9783030528775 |
|
3030528774 |
|
