The search for top-squark pair production with the ATLAS detector at √s = 13 TeV in the fully hadronic final state

• DOI: 10.6094/unifr/167021
• Publication Date: 2020-11-23
• Authors: P. Mogg
• Keywords: Hierarchy problem; Gluino; Pair production; ATLAS experiment

Supersymmetry is a well-motivated theory for physics beyond the Standard Model of Particle Physics. It has potential to solve hierarchy problem, can lead unification gauge couplings and provide candidate dark matter. The radiative corrections Higgs mass caused by top squark, sypersymmetric partner quark, are very high, which motivates top-squark close electroweak scale. In this thesis, search squark in fully hadronic final state presented. Data taken ATLAS detector during proton-proton collisions at √s = 13 TeV LHC were analysed. With an intergrated luminosity 36.1 fb^-1, no significant excess above expectation was found. results interpreted as exclusion limits on neutralino mass. Furthermore, propositions future analysis larger data-set made.