Higgs Phenomenology in the Two-Singlet Model

Understand

We study the phenomenology of the Standard Model (SM) Higgs sector extended by two singlet scalars.

• The model predicts two CP-even scalars $h_{1,2}$ which are a mixture of doublet and singlet components as well as a pure singlet scalar $S_{0}$ which is a dark matter candidate.
• We show that the model can satisfy the relic density and direct detection constraints as well as all the recent ATLAS and CMS measurements.
• We also discuss the effect of the extra Higgs bosons on the different Higgs triple couplings $h_{i}h_{j}h_{k}$, $i,j,k=1,2$.