1111.5462 (Chuan-Hung Chen et al.)

Exotic fermion multiplets as a solution to baryon asymmetry, dark matter
and neutrino masses    [PDF]

Chuan-Hung Chen, Sandy S. C. Law

We propose an extension to the standard model where three exotic fermion
5-plets and one scalar 6-plet are added to the particle content. By demanding
that all interactions are renormalizable and standard model gauge invariant, we
show that the lightest exotic particle in this model can be a dark matter
candidate as long as the new 6-plet scalar does not develop a nonzero vacuum
expectation value. Furthermore, light neutrino masses are generated radiatively
at one-loop while the baryon asymmetry is produced by the CP-violating decays
of the second lightest exotic particle. We have demonstrated using concrete
examples that there is a parameter space where a consistent solution to the
problems of baryon asymmetry, dark matter and neutrino masses can be obtained.

View original: http://arxiv.org/abs/1111.5462