Weakly Interacting Massive Particles (WIMPs) and axions are arguably the most compelling dark matter candidates in literature. Could they coexist as particles? More importantly, can be incorporated a well motivated framework agreement with experimental data? In this work, we show that two component realized Inert Doublet Model an elegant natural manner by virtue of spontaneous breaking Peccei-Quinn $U(1)_{PQ}$ symmetry into residual $Z_2$ symmetry. The WIMP stability is guaranteed $Z_{2}$...

We construct and analyze nonsupersymmetric SO(10) standard model extensions which explain dark matter (DM) through the fermionic Higgs portal. In these SO(10)-based models DM particle is naturally stable since a $Z_2$ discrete symmetry, parity, left at end of symmetry breaking chain to model. Potentially realistic contain $\bf{10}$ $\bf{45}$ representations from neutralino-like mass matrix with arbitrary mixings can be obtained. Two different chains will analyzed in light gauge coupling...

We study a realization of the topology Zee model for generation neutrino masses at one-loop with minimal set vector-like fermions. After imposing an exact $Z_2$ symmetry to avoid tree-level Higgs-mediated flavor changing neutral currents, one dark matter candidate is obtained from subjacent inert doublet model, but presence new co-annihilating particles. show that consistent constraints coming lepton violation processes, oblique parameters, and oscillation data.

The Peccei-Quinn (PQ) mechanism not only acts as an explanation for the absence of strong charge parity ($CP$) violation but also can play a main role in solution to other open questions particle physics and cosmology. Here we consider model that identifies PQ symmetry common thread $CP$ problem, generation radiative Dirac neutrino masses origin multicomponent dark sector. Specifically, scotogenic arise at one-loop level with lightest fermionic mediator field acting second matter (DM)...

We consider a dark matter (DM) model that arises from the interplay of two simplified models, namely doublet-triplet fermion and scalar model. Despite being excellent exponents WIMP paradigm, physics related to DM in each these models fails at same time account for neutrino masses. It turns out combination it is possible generate masses one-loop level four topologies are realizations Weinberg operator one-loop. In this work, we combine both focusing mostly on fermionic lying electroweak...

We propose a simple extension of the Zee model in order to solve dark matter issue. It is achieved by adding one generation two vectorlike leptons and introducing an exact Z2 symmetry. establish parameter space that consistent with constraints coming from lepton flavor violation processes, neutrino oscillation matter.

A bstract The inert Zee model is an extension of the for neutrino masses to allow a solution dark matter problem that involves two vector-like fields, doublet and singlet SU(2) L , scalars, also all them being odd under exact Z 2 symmetry. introduction guarantees one-loop masses, forbids tree-level Higgs-mediated flavor changing neutral currents ensures stability candidate. Due natural breaking lepton numbers in encouraged by ambitious experimental program designed look charged violation...

Weakly interacting massive particles (WIMPs) and axions are arguably the most compelling dark matter (DM) candidates in literature. Here, we consider a model where Peccei–Quinn (PQ) symmetry solves strong CP problem, generates radiatively Dirac neutrino masses gives origin to multicomponent sector. Specifically, scotogenic arise at one-loop level. The lightest fermionic mediator acts as second DM candidate due residual [Formula: see text] resulting from PQ breaking. WIMP component resembles...

The inert Zee model is an extension of the for neutrino masses. This new explains dark matter relic abundance, generates a one-loop masses and forbids tree-level Higgs-mediated flavor changing neutral currents. Although phenomenology similar to that doublet model, presence vector-like fermions opens lepton portal as annihilation channel. We study impact this in low-mass regime show parameter space allowed by direct indirect searches matter. Remarkably, region [Formula: see text] GeV...

Weakly Interacting Massive Particles (WIMPs) and axions are arguably the most compelling dark matter (DM) candidates in literature. Here, we consider a model where PQ symmetry solves strong CP problem, generates radiatively Dirac neutrino masses, gives origin to multicomponent sector. Specifically, scotogenic masses arise at one-loop level. The lightest fermionic mediator acts as second DM candidate due residual $Z_2$ resulting from breaking. WIMP component resembles well-known...

The inert Zee model is an extension of the for neutrino masses to allow a solution dark matter problem that involves two vector-like fields, doublet and singlet ${\rm SU(2)_L}$, scalars, also all them being odd under exact Z_2}$ symmetry. introduction guarantees one-loop masses, forbids tree-level Higgs-mediated flavor changing neutral currents ensures stability candidate. Due natural breaking lepton numbers in model, we study phenomenology processes leading these kind signals establish...