Scenarios for secluded WIMP (weakly interactive dark matter) matter models have been extensively studied in simplified versions. This paper shows a complete UV realization of model with an extra Abelian gauge symmetry that includes two-component candidates, where the conversion process plays significant role determining relic density Universe. The contains two new unstable mediators: Higgs and photon. It generates Dirac neutrino masses can be tested future direct detection experiments...

When the singlet-doublet fermion dark matter model is extended with additional $Z_2$--odd real singlet scalars, neutrino masses and mixings can be generated at one-loop level. In this work, we discuss salient features arising from combination of two resulting simplified models. $Z_2$-lightest odd particle a scalar singlet, $\operatorname{Br}(\mu\to e \gamma)$ could measurable provided that mixing small enough. scenario, also new decay channels vector-like fermions into scalars generate...

The singlet-doublet fermion dark matter model (SDFDM) provides a good DM candidate as well the possibility of generating neutrino masses radiatively. search and identification requires combined effort both indirect direct detection experiments in addition to LHC. Remarkably, an excess GeV gamma rays from Galactic Center (GCE) has been measured with \textit{Fermi} Large Area Telescope (LAT) which appears be robust respect changes diffuse galactic background modeling. Although several...

We perform a complete analysis of the consistency singlet-triplet scotogenic model, where both dark matter and neutrino masses can be explained. determine parameter space that yields proper thermal relic density been in agreement with physics, lepton flavor violation, direct indirect searches. In particular, we calculate annihilation into two photons, finding corresponding cross-section is below present bounds reported by Fermi-LAT H.E.S.S. collaborations. also spin-dependent for elastic...

We examine an extension of the Standard Model that addresses dark matter puzzle and generates Dirac neutrino masses through radiative seesaw mechanism. The new field content includes a scalar plays important role in setting relic abundance matter. analyze phenomenology light direct, indirect, collider searches In this framework, candidate is particle mixture singlet-doublet fields with mass ${m}_{{\ensuremath{\chi}}_{1}^{0}}\ensuremath{\lesssim}1.1\text{ }\text{ }\mathrm{TeV}$. find allowed...

In this work, we study multicomponent dark sectors comprised of a fermionic and scalar matter candidate. the sector, mostly focus on Inert Doublet Model while in sector three different models. For all them, investigate impact that conversion regular WIMP annihilating processes have relic abundance. We recover region between electroweak scale $\sim$ 550 GeV for mass, which is usually excluded Model. also consider current constraints from both direct detection indirect experiments include...

Assuming that the underlying model satisfies some general requirements such as renormalizability and CP conservation, we calculate non-relativistic one-loop cross section for any self-conjugate dark matter particle annihilating into two photons. We accomplish this by carefully classifying all possible diagrams and, from them, reading off interactions with particles running in loop. Our approach is leads to same results found literature popular candidates neutralinos of MSSM, minimal matter,...

By extending the SM with two scalar singlets, a vector-like fermion doublet and singlet, all odd under Z2 symmetry, it is possible to explain correct dark matter relic density also fulfill main constraints for neutrino physics. In this work, we only consider case of fermionic matter. We study parameter space, first taking into account constraint, which gives us set parameters that can be used as inputs Casas-Ibarra parametrization in order get remaining match analyze from lepton flavor...

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...

Scenarios for secluded WIMP dark matter models have been extensively studied in simplified versions. This paper shows a complete UV realization of model with an extra Abelian gauge symmetry that includes two-component candidates, where the conversion process plays significant role determining relic density Universe. The contains two new unstable mediators: Higgs and photon. It generates Dirac neutrino masses can be tested future direct detection experiments matter. is also compatible...

We present a gauged baryon number model as an example of models where all new fermions required to cancel out the anomalies help solve phenomenological problems standard (SM). Dark fermion doublets, along with iso-singlet charged fermions, in conjunction set SM-singlet participate generation small neutrino masses through Dirac-dark Zee mechanism. The other SM-singlets explain dark matter Universe, while their coupling inert singlet scalar is source $CP$ violation. In presence strong...

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...

In noncommutative geometry (NCG) the spectral action principle predicts standard model (SM) particle masses by constraining scalar and Yukawa couplings at some heavy scale, but gives an inconsistent value for Higgs mass. Nevertheless, sector in NCG approach to model, is general composed of two doublets its phenomenology remains unexplored. this work, we present a type-II two-Higgs-doublet NCG, with SM-like mass compatible 125 GeV experimental extra scalars within alignment limit without...