A new parameter space study of the singlet fermionic cold dark matter model

Understand

We consider the standard model (SM) extended by a gauge singlet fermion as cold dark matter (SFCDM) and a gauge singlet scalar (singlet Higgs) as a mediator.

• The parameter space of the SM is enlarged by seven new ones.
• We obtain the total annihilation cross section of singlet fermions to the SM particles and singlet Higgs at tree level.
• Regarding the relic abundance constraint obtained by WMAP observations, we study the dependency on each parameter separately, for dark matter masses up to 1 TeV.