Stability of dark matter from the D4×Z2 f flavor group
Por:
Meloni D., Morisi S., Peinado E.
Publicada:
1 ene 2011
Categoría:
Nuclear and High Energy Physics
Resumen:
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 f 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, ?13=0. Since m?1=0, we also have a simple prediction for the effective mass in terms of the solar angle: |m??|=|m?2|sin2??~10-3 eV. 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. © 2011 Elsevier B.V.
Filiaciones:
Meloni D.:
Dipartimento di Fisica E. Amaldi, Universitá degli Studi Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
Morisi S.:
HEP Group, Institut de Física Corpuscular, C.S.I.C./Universitat de València, Edificio Institutos de Paterna, Apt. 22085, E-46071 Valencia, Spain
Peinado E.:
HEP Group, Institut de Física Corpuscular, C.S.I.C./Universitat de València, Edificio Institutos de Paterna, Apt. 22085, E-46071 Valencia, Spain
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