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We demonstrate that by adding three exotic fermion 5-plets a nd one scalar 6-plet to the standard model, a consistent solution to the problems of baryon asymm etry, dark matter and neutrino mass can be obtained. This is possible because renormalizabilit y and standard model gauge invariance allow the lightest exotic particle in this model to be a dark m atter candidate if the new 6-plet scalar does not develop a nonzero vacuum expectation value. Furthe rmor , light neutrino masses can be generated radiatively at one-loop while the baryon asymm etry is produced by the CP-violating decays of the second lightest exotic particle.

Baryon asymmetry, dark matter and neutrino mass via exotic multiplets