Higgs Properties at the LHC - Jason Tsz Shing Yue Gebunden

This thesis studies the properties of the Higgs particle discovered at the Large Hadron Collider (LHC) in 2012 in order to elucidate its role in electroweak symmetry breaking and cosmological phase transition in the early universe. It shows that a generic spin-2 Higgs impostor is excluded by the precision measurements of electroweak observables and perturbative unitarity considerations. It obtains LHC constraints on anomalous CP-violating Higgs-Top Yukawa couplings and examines the prospects of their measurement in future experiments. Lastly it discusses in detail the electroweak phase tran sition and generation of cosmological matter-antimatter asymmetry in the universe with anomalous Higgs couplings.