Abstract
We explore the idea that dark matter stability results from the presence of a matter-parity symmetry, arising naturally as a consequence of the spontaneous breaking of an extended SU(3)⊗SU(3)L⊗U(1)X⊗U(1)N electroweak gauge symmetry with fully gauged B-L. Using this framework we construct a theory for scotogenic dark matter and analyze its main features.
Highlights
Unveiling the nature of dark matter constitutes a big challenge in astroparticle physics, requiring the existence of new particles and suggesting the presence of new symmetries capable of stabilizing the corresponding candidate particle on cosmological scales
In Refs. [6,7] it was suggested that an extended gauge symmetry can provide a natural setting for a theory of cosmological dark matter
We show how the natural M P symmetry described by the 3-3-1-1 models can be responsible for both the neutrino mass generation as well as for the stability of dark matter within a scotogenic scenario, without the need to impose any additional symmetry by hand [22]
Summary
Unveiling the nature of dark matter constitutes a big challenge in astroparticle physics, requiring the existence of new particles and suggesting the presence of new symmetries capable of stabilizing the corresponding candidate particle on cosmological scales. To do so we consider an extension of the original model containing extra vector-like fermions as well as scalars These naturally contain the new messenger dark sector particles required to implement the scotogenic scenario. We show how the natural M P symmetry described by the 3-3-1-1 models can be responsible for both the neutrino mass generation as well as for the stability of dark matter within a scotogenic scenario, without the need to impose any additional symmetry by hand [22]. The new ingredients of the model, with respect to [6], are the vector-like fermion triplets FaL,R ,1 and the extended scalar sector spanned by S, σ and These fields will be responsible for the neutrino mass generation mechanism described . The phenomenology for quarks, charged leptons and gauge bosons of the model coincides largely with the analysis performed in [17]
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