Josef Pradler (Perimeter Institute for Theoretical Physics)
We consider the minimal model in which dark matter is stabilized by a non-Abelian discrete symmetry. The symmetry group is taken to be D_3, which is the smallest non-Abelian finite group. The minimal model contains (nontrivial) singlet and doublet scalar representations of D_3 which couple to the Standard Model fields via the Higgs portal. This construction predicts two species of dark matter over much of the parameter space. Nontrival interactions under D_3 lead to a novel thermal history of dark matter, while the multi-component nature of dark matter can be tested by future direct detection experiments.
Adisorn Adulpravitchai (Max Planck Institut fuer Kernphysik) Brian Batell (Perimeter Institute for Theoretical Physics) Josef Pradler (Perimeter Institute for Theoretical Physics)