Two component WIMP-FImP dark matter model with singlet fermion, scalar and pseudo scalar

Understand

We explore a two component dark matter model with a fermion and a scalar.

• In this scenario the Standard Model (SM) is extended by a fermion, a scalar and an additional pseudo scalar.
• The fermionic component is assumed to have a global ${\rm U(1)}_{\rm DM}$ and interacts with the pseudo scalar via Yukawa interaction while a $\mathbb{Z}_2$ symmetry is imposed on the other component -- the scalar.
• These ensure the stability of both the dark matter components.