This thesis would not have been completed without the help of several people. I will try to name some of them: I'd first like to thank my supervisor, Dr. Manuella Vincter. I know now, without a doubt, that next to brilliant, rigorous science, there is always room for genuine humanity. Thank you for the patience and thorough guidance. Thank you for the kindness. Thank you for this immense adventure. I would like to thank Jaymie Maddox: Thank you for the support, thank you for the generosity, and thank you for the countless hours you've spent in an uncomfortable seat somewhere, on a bus, in a plane, or aboard a train, coming to sit up for hours with this goofy stammering boy, laughing together about our lives. Thank you to my ATLAS office-(and occasionally roommates: es: Graham, Steven, Rob, Stephen, Matthew, and David. Thank you for the fun conversations and good advice. Thank you to all of my friends, old and new, for keeping me sane. Thank you to the EGamma and EGamma Calibration Groups at CERN for guiding my research and always providing helpful advice when I got stuck. Finally, I would like to thank my family. I would certainly not be who I am today without their generous support. Thank you to my parents, Pierre and Georgina, and my sisters, Solange, Ginette, and Natasha. Thank you to my extremely cool nieces and nephews: Hudson, Lilian, Violet, Daxton, and Theo. Thank you to Anna, thank you to Willow, and last, but certaintly not least, thank you to Snowball, who, despite everything, is still a very good boy. This thesis is the author's original work, and documents research completed while working towards the completion of an M.Sc. degree as a graduate student at Carleton University. Contents v Contents Abstract ii Acknowledgements iii Statement of Originality iv Contents v List of Tables vii List of Figures viii 1 Introduction 1 1.1 The Standard Model 4 1.1.1 Particles of the Standard Model 5 1.