Studies of charged Higgs boson signals for the Tevatron and the LHC

Two Higgs doublet models are a viable extension to the Standard Model (SM) and can be incorporated into supersymmetry (SUSY). In such models, electroweak symmetry breaking leads to five Higgs particles, three neutral and a charged pair. We discuss various analyzes of the charged Higgs boson, carried out in the context of the Minimal Supersymmetric extension of the Standard Model (MSSM) and also in models with singlet neutrinos in large extra dimensions. Specific studies for the Large Hadron Collider (LHC) and the Tevatron are presented.