Three Higgs-Doublet Dark Matter Model

In this work, we have explored a multi Higgs doublet framework where one of the lightest odd particles behaves as a dark matter (DM) candidate. Three sets of Standard Model-like Higgs doublets are considered, where two of them acquire some Vacuum Expectation Value (VEV) after Electroweak Symmetry Breaking (EWSB). These VEVs play a crucial role in generating mass for both charged and neutral fermions. On the other hand, the third Higgs doublet does not acquire any VEV due to the additional \(Z_4\) symmetry. As a result, the lightest odd particle becomes a viable candidate for DM in our model. A large and new DM mass region in the parameter spaces is obtained due to the presence of other heavy particles.