Abstract
We consider a two-Higgs-doublet Model (2HDM) with a softly broken Z2 symmetry where only one of the doublets couples to fermions at tree-level. In add ition, the other doublet does not acquire a vacuum expectation value. One can view this model as a generalization of the Inert Doublet Model (IDM), which has an exact Z2 symmetry. In this paper, the model is presented together with constraints from theory and the oblique parameters S and T . Some implications for collider phenomenology is outlined and in particular, we discuss the charged scalar in this model. At lowest order, the charged scalar decays into a pair of fermions proceed at one loop level. We + †
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