CERN-THESIS-2012-105 22/06/2012 SEARCH FOR NEW STATES DECAYING INTO / WITH THE ATLAS DETECTOR AT THE LARGE HADRON COLLIDER by Wei-Cheng Wong APPROVED BY SUPERVISORY COMMITTEE: ___________________________________________ Xinchou Lou, Chair ___________________________________________ Robert Glosser ___________________________________________ John H. Hoffman ___________________________________________ Mustapha Ishak-Boushaki ___________________________________________ Kendall Reeves