Revamping Kaluza-Klein dark matter in an orbifold theory of flavor

We suggest a common origin for dark matter, neutrino mass and family symmetry within the orbifold theory proposed in [Phys. Lett. B 801, 135195 (2020, 10.1016/j.physletb.2019.135195); Phys. Rev. D 101, 116012 (2020), 10.1103/PhysRevD.101.116012]. Flavor physics is described by an A₄ family symmetry that results naturally from compactification. Weakly interacting massive particle dark matter emerges from the first Kaluza-Klein excitation of the same scalar that drives family symmetry breaking and neutrino masses through the inverse seesaw mechanism. In addition to the "golden" quark-lepton mass relation and predictions for 0 ν β β decay, the model provides a good global description of all flavor observables.