Multi-component dark matter through a radiative Higgs portal

• DOI: 10.1007/jhep01(2017)080
• Publication Date: 2017-01-19T04:23:09Z
• Authors: Anthony DiFranzo; Gopolang Mohlabeng
• Keywords: Light dark matter; Mixed dark matter

We study a multi-component dark matter model where interactions with the Standard Model are primarily via Higgs boson. The contains vector-like fermions charged under SU(2) W × U(1) Y and gauge group, U(1)′. This results in two candidates. A spin-1 spin- $$ \frac{1}{2} candidate, which have loop tree-level couplings to Higgs, respectively. explore resulting effect on relic abundance, while also evaluating constraints invisible width from direct detection experiments. Generally, we find that this is highly constrained when fermionic candidate predominant fraction of abundance.