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We examine simple extension of the standard model with a pair of fermions,one singlet and a doublet, in a common thread linking the dark matter problemwith the smallness of neutrino masses associated with several excitingfeatures. In the presence of a small bare Majorana mass term, the singletfermion brings in a pseudo-Dirac dark matter capable of evading the strongspin-independent direct detection bound by suppressing the dark matterannihilation processes mediated by the neutral current. In consequence, theallowed range of mixing angle between the doublet and the singlet fermions getsenhanced substantially. Presence of the same mass term in association ofsinglet scalars also elevates tiny but nonzero masses radiatively for lightMajorana neutrino satisfying observed oscillation data.

Linking the pseudo-Dirac dark matter and radiative neutrino mass in a singlet doublet scenario