FIMP DM in the extended hyperchargeless Higgs triplet model

We perform an exclusive study on the feebly interacting massive particle dark matter candidate in an extended hyperchargeless ($Y=0$) Higgs triplet model. The additional ${Z}_{2}$ odd neutral fermion singlet plays the role of dark matter with support from two other vectorlike fermion doublets. The mixing between the neutral component of a doublet and singlet fermions controls the current relic density through the freeze-in mechanism, whereas the additional doublet fermion helps to get the neutrino mass and mixing angles. We obtain a broad region of the parameter spaces satisfying the current relic density and neutrino mass and mixing angles.