Stability of dark matter from the [inline image] flavor group

• Published in: Physics letters. B Vol. 703; no. 3; pp. 281 - 287
• Main Authors: Meloni, D, Morisi, S, Peinado, E
• Format: Journal Article
• Language: English
• Published: 14-09-2011
• Subjects: Dark matter; Decay; Elementary particles; Leptons; Mathematical models; Nuclear power generation; Nuclear reactor components
• ISSN: 0370-2693
• DOI: 10.1016/j.physletb.2011.07.084

We study a model based on the dihedral group D sub(4 in which the dark matter is stabilized by the interplay between a remnant Z) sub(2) symmetry, of the same spontaneously broken non-abelian group, and an auxiliary [inline image] 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, [theta] sub(13=0. Since m) sub([)nu] sub(1=0, we also have a simple prediction for the effective mass in terms of the solar angle: [inline image]. 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 flavor changing neutral currents are under control.)