UC Davis

In this dissertation, we study the effects of new physics involving the Higgs boson. Where possible, we avoid making any effective field theory (EFT) power counting assumptions and instead parametrize the new physics using a bottom up approach. We identify the energy scales at which one might detect Beyond Standard Model (BSM) physics given deviations in the Higgs couplings. We also provide lists of linearly independent primary operators for 3 and 4 point functions involving the Higgs, as well as a rough estimate of the size of their coefficients. Finally, we examine measuring anomalous Higgs couplings at a muon collider and focus on the top Yukawa coupling.