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arXiv · 1104.0178

Stability of dark matter from the D4xZ2 flavor group

D. Meloni·S. Morisi·E. Peinado
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Abstract

We study a model based on the dihedral group D4 in which the dark matter is stabilized by the interplay between a remnant Z2 symmetry, of the same spontaneously broken non-abelian group, and an auxiliary Z2 introduced to eliminate unwanted couplings in the scalar potential. In the lepton sector the model is compatible with normal hierarchy only and predicts a vanishing reactor mixing angle. Since m1=0, we also have a simple prediction for the effective mass in terms of the solar angle. There also exists a large portion of the model parameter space where the upper bounds on lepton flavor violating processes are not violated. We incorporate quarks in the same scheme finding that a description of the CKM mixing matrix is possible and that semileptonic K and D decays mediated by flavour changing neutral currents are under control.

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D. Meloni, S. Morisi, E. Peinado. 2011-04-01. Stability of dark matter from the D4xZ2 flavor group. https://doi.org/10.1016/j.physletb.2011.07.084

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