Hatakeyama, Kenichi.Scarborough, Tara A.2012-11-292017-04-072012-11-292017-04-072012-082012-11-29http://hdl.handle.net/2104/8515The main theme of the research presented in this thesis is the search for Supersymmetry, one of the most likely and well-motivated extensions of the standard model of particle physics, in 7 TeV proton-proton collisions delivered by the world's most energetic accelerator — the Large Hadron Collider (LHC). In the Supersymmetry search, the key observable is the "missing transverse energy" (Emiss), which T indicates the signal of the lightest stable supersymmetric particles. These lightest supersymmetric particles are also candidates for the constituents of dark matter ob- served in astronomical observations. The research presented in this thesis consists of two major parts: (1) improving the measurement of the missing transverse energy, and (2) searching for Supersymmetry with an emphasis on the study of fake Emiss T events and on the interpretation of real Emiss events using a framework called the "simplified model".en-USBaylor University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact librarywebmaster@baylor.edu for inquiries about permission.Experimental high energy particle physics.Supersymmetry.ThesisWorldwide access