The Search for Supersymmetry in Hadronic Final States Using Boosted Object Reconstruction
This thesis represents one of the most comprehensive and in-depth studies of the use of Lorentz-boosted hadronic final state systems in the search for signals of Supersymmetry conducted to date at the Large Hadron Collider. A thorough assessment is performed of the observables that provide enhanced sensitivity to new physics signals otherwise hidden under an enormous background of top quark pairs produced by Standard Model processes. This is complemented by an ingenious analysis optimization procedure that allowed for extending the reach of this analysis by hundreds of GeV in mass of these hypothetical new particles. Lastly, the combination of both deep, thoughtful physics analysis with the development of high-speed electronics for identifying and selecting these same objects is not only unique, but also revolutionary. The Global Feature Extraction system that the author played a critical role in bringing to fruition represents the first dedicated hardware device for selecting these Lorentz-boosted hadronic systems in real-time using state-of-the-art processing chips and embedded systems.
SlowControl and Monitoring
D N1 Plots
E ttbar HeavyFlavor ClassificationFlavor Contamination
F Sample List
G ModelDependent Limits by Region
H HEPData Plots
9 Upgrade Studies
A Optimizing Optimizations
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1-lepton algorithm anti-kt arXiv ATLAS Collaboration ATLAS detector ATLAS experiment ATLAs Internal ATLAS Simulation b-jets b-tagging beam Boosted Object Reconstruction boson calculation calibration calorimeter correction cross-section cut-and-count analysis DAOD_SUSY10 decay defined described in Sect Diboson dijet efficiency electromagnetic electron EmissT fermions Feynman diagrams gluino gluons gTowers Hadronic Final hep-ex hep-ph Higgs Higgs boson inputs interactions ironman jet energy jet pT kinematic L1Calo Large Hadron Collider lepton luminosity mass meff missing transverse multijet muon neutralino º º offline jet optimization packet parameter particles parton physics plots proton proton–proton collisions Pythia requirement samples scale Search for Supersymmetry selection shower shown in Fig signal regions Springer Nature Switzerland Standard Model subjets Supersymmetry Supersymmetry in Hadronic Switzerland AG 2020 systematic uncertainties thesis top quark topoclusters tracks transverse momentum trigger jet turn-on curve upgrade variables vertex W boson