The scotogenic model is the Standard Model (SM) with Z_2 symmetry and the
addition of Z_2 odd right-handed Majorana neutrinos and SU(2)_L doublet scalar
fields. We have extended the original scotogenic model by an additional Z_2 odd
singlet scalar field that plays a role in dark matter. In our model, the
asymmetries of the lepton and Z_2 odd doublet scalar are simultaneously
produced through CP-violating right-handed neutrino decays. While the former is
converted into baryon asymmetry through the sphaleron process, the latter is
relaid to the DM density through the decay of SU(2)_L doublet scalar that is
named "asymmetric mediator". In this way, we provide an extended scotogenic
model that predicts the energy densities of baryon and dark matter being in the
same order of magnitude, and also explains the low-energy neutrino masses and
mixing angles.Comment: 17 pages, 1 table, 5 figure