A bstract We systematically study and classify scotogenic models with a local U(1) gauge symmetry. These give rise to radiative neutrino masses stable dark matter candidate, but avoid the theoretical problems of global discrete symmetries. restrict sector particle content up four scalar or fermionic SU(2) singlets, doublets triplets use arguments based on anomaly freedom, Lorentz symmetry find all possible charge assignments these particles. The can be broken by new Higgs boson residual...

With the KATRIN experiment, determination of absolute neutrino mass scale down to cosmologically favored values has come into reach. We show that this measurement provides missing link between Standard Model and dark sector in scotogenic models, where suppression masses is economically explained by their only indirect coupling Higgs field. determine linear relation electron scalar ${\ensuremath{\lambda}}_{5}$ associated with neutral splitting be...

Radiative seesaw models have the attractive property of providing dark matter candidates in addition to generation neutrino masses. Here we present a study signals from annihilation particles that been gravitationally captured Sun framework scotogenic model. We compute expected event rates IceCube detector its 86-string configuration. As fermionic does not scatter off nucleons due singlet nature and therefore accumulate Sun, case scalar with scan over parameter space. Due naturally small...

Abstract We determine the discovery potential of Large Hadron Collider (LHC) at 13 TeV center-of-mass energy for a heavy scalar resonance in dilepton channel. In particular, we consider singlet-like mass eigenstate mixed two Higgs doublet and singlet model U (1) B − L extension standard model. find that, despite small coupling with doublets, this can be discovered 5 σ LHC integrated luminosities ∼300 to 1400 fb −1 range between 500 GeV 1 TeV.

Dark matter (DM) scattering and its subsequent capture in the Sun can boost local relic density, leading to an enhanced neutrino flux from DM annihilations that is principle detectable at telescopes. We calculate event rates expected for a radiative seesaw model containing both scalar triplet singlet-doublet fermion candidates. In case of DM, absence spin dependent on nuclei results low rate Sun, which reflected less than one per year current IceCube configuration with 86 strings. For there...

In the literature measures of fine-tuning have been discussed as one tools to assess feasibility beyond Standard Model theories. this paper we focus on two specific and investigate what kind they actually quantify. First apply both Higgs doublet model, for which can analyze numerical results in terms available analytic expressions. After drawing various conclusions about measures, a particular left-right symmetric model it has claimed that already at tree-level suffers from high amount...

Radiative seesaw models have the attractive property of providing dark matter candidates in addition to generation neutrino masses. Here we present a study signals from annihilation particles that been gravitationally captured Sun framework scotogenic model. We compute expected event rates IceCube detector its 86-string configuration. As fermionic does not scatter off nucleons due singlet nature and therefore accumulate Sun, case scalar with scan over parameter space. Due naturally small...

A bstract Right-handed neutrinos with MeV to GeV mass are very promising candidates for dark matter (DM). Not only can they solve the missing satellite puzzle, cusp-core problem of inner DM density profiles, and too-big-to fail problem, i.e. that unobserved satellites too big not have visible stars, but also account Standard Model (SM) neutrino masses at one loop. We perform a comprehensive study right-handed parameter space impose correct observed relic SM differences mixings. find in...

We determine the discovery potential of Large Hadron Collider (LHC) at 13 TeV center-of-mass energy for a heavy scalar resonance in dilepton channel. In particular, we consider singlet-like mass eigenstate mixed two Higgs doublet and singlet model $U(1)_{B-L}$ extension Standard Model. find that, despite small coupling with doublets, this can be discovered 5$\sigma$ LHC integrated luminosities $\sim 300$ to $1400$ fb$^{-1}$ range between 500 GeV 1 TeV.

We systematically study and classify scotogenic models with a local U(1) gauge symmetry. These give rise to radiative neutrino masses stable dark matter candidate, but avoid the theoretical problems of global discrete symmetries. restrict sector particle content up four scalar or fermionic SU(2) singlets, doublets triplets use arguments based on anomaly freedom, Lorentz symmetry find all possible charge assignments these particles. The can be broken by new Higgs boson residual symmetry, that...

We explore the parameter space of a variant SLIM model, which extends SM with singlet and doublet complex scalars two generations right-handed neutrinos, lightest has mass in MeV to GeV region plays role Dark Matter candidate. impose current collider astrophysical constrains, as well bounds from Lepton Flavour Violating experiments. also consider discovery potential XENON experiment exploiting electron recoil possible direct detection signal. Despite DM this model being leptophilic,...

With the KATRIN experiment, determination of absolute neutrino mass scale down to cosmologically favored values has come into reach. We show that this measurement provides missing link between Standard Model and dark sector in scotogenic models, where suppression masses is economically explained by their only indirect coupling Higgs field. determine linear relation electron scalar $\lambda_5$ associated with neutral splitting be $\lambda_5=3.1\times10^{-9}\ m_{\nu_e}/$eV.

We explore the parameter space of a variant SLIM model, which extends SM with singlet and doublet complex scalars two generations right-handed neutrinos, lightest has mass in MeV to GeV region plays role Dark Matter candidate. impose current collider astrophysical constrains, as well bounds from Lepton Flavour Violating experiments. also consider discovery potential XENON experiment exploiting electron recoil possible direct detection signal. Despite DM this model being leptophilic,...

We studied the effects of absolute neutrino mass scale in scotogenic radiative seesaw model. From a scan over parameter space this model, linear relation between and dark sector-Higgs coupling $λ_5= 3.1\times10^{-9}\ m_{ν_e}/$eV has been established. With projected sensitivity KATRIN experiment nearing cosmologically favored values, measurement would fix value $λ_5$. Subsequent correlations DM Yukawa SM leptons can probe fermion space, when lepton flavor violation constraints are also...

Radiative seesaw models have the attractive property of providing dark matter candidates in addition to generation neutrino masses. Here we present a study signals from annihilation particles which been gravitationally captured Sun, framework scotogenic model. We compute expected event rates IceCube detector its 86-string configuration. As fermionic does not accumulate case scalar matter, with scan over parameter space. Due naturally small mass splitting between two neutral components,...