Dynamical electroweak symmetry breaking at Tevatron Run II and LHC

The Standard Model (SM) of particle physics unifies the electromagnetic and the weak force under an SU(2) x U(1) gauge group. The fact that these forces are observed to be so different in strength and range is explained by spontaneous breaking of this symmetry, induced by the nonzero vacuum expectation value of a scalar Higgs field. There is however no experimental evidence for the Higgs field and there are also theoretical difficulties. In one class of extensions of the SM designed to deal with these problems the electroweak symmetry is broken dynamically. This thesis provides a framework in which SM Higgs searches at Tevatron Run II and at the Large Hadron Collider (LHC) can be extended to new scalar or pseudoscalar states predicted in dynamical models of electroweak symmetry breaking. These states can have enhanced visibility in standard Higgs search channels, making them potentially discoverable at Tevatron Run II and definitely visible at the LHC. I discuss the likely sizes of the enhancements in the various search channels for each model and identify the model features having the largest influence on the degree of enhancement. I suggest the mass reaches of Higgs searches at Tevatron and LHC for these non-standard scalar states. I compare signals for the non-standard scalars across models and also with expectations in the SM and the Minimal Supersymmetric Model, another theory beyond the SM, to show how one could start to identify which state has actually been found.