Search for supersymmetry in final states with three leptons and missing transverse energy with the ATLAS detector at the Large Hadron Collider

Santoyo Castillo, Itzebelt (2015) Search for supersymmetry in final states with three leptons and missing transverse energy with the ATLAS detector at the Large Hadron Collider. Doctoral thesis (PhD), University of Sussex.

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Abstract

The ATLAS experiment at the Large Hadron Collider has collected an unprecedented
amount of data in the 3 years of data taking since its start. In this document I will discuss
the results of the analysis I performed during my PhD at the university of Sussex
for the search of Supersymmetry in events with three leptons (electron/muon/tau) and
missing transverse energy in the final state. The search is performed on the full dataset
collected by the experiment in 2012, at a centre-of-mass energy of 8 TeV. These results are
interpreted in SUSY models with chargino-neutralino pair production via decays involving
sleptons, staus, gauge bosons and the newly discovered Higgs boson. These results presented improve on previous searches performed at ATLAS in three lepton final states with only electrons and muons. Special focus will be given to the optimisation process of Supersymmetry signal with respect to the SM background, and the statistical interpretation of the results obtained with this search.

Item Type: Thesis (Doctoral)
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Library Cataloguing
Date Deposited: 09 Jun 2015 14:06
Last Modified: 28 Sep 2015 14:56
URI: http://sro.sussex.ac.uk/id/eprint/54337

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