Multi-component Dark Matter through a Radiative Higgs Portal

Understand

We study a multi-component dark matter model where interactions with the Standard Model are primarily via the Higgs boson.

• The model contains vector-like fermions charged under $SU(2)_W \times U(1)_Y$ and under the dark gauge group, $U(1)^\prime$.
• This results in two dark matter candidates.
• A spin-1 and a spin-1/2 candidate, which have loop and tree-level couplings to the Higgs, respectively.