Consistency of WIMP Dark Matter as radiative neutrino mass messenger

Merle, Alexander; Platscher, Moritz; Rojas, Nicolás; Valle, J. W. F.; Vicente, Avelino

doi:10.1007/jhep07(2016)013

Cited by 46 publications

(84 citation statements)

References 45 publications

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“…The quartic couplings are chosen so that the low energy scalar potential is bounded from below. Those conditions are given by [17] …”

Section: The Scalar Potentialmentioning

confidence: 99%

“…This can be understood since neither dark matter nor the collider phenomenology are sensitive to the individual masses of different neutrino species, and hence to their specific mass hierarchy [24]. Small values of λ φη were chosen by the original references [16,17] in order to have small neutrino masses with O(1) Yukawa couplings. 2 This fits with t'Hooft naturalness principle, since making λ φη zero would deliver a Lagrangian with an extra U(1) symmetry which is identified with lepton number.…”

Section: Neutrino Massmentioning

confidence: 99%

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Heavy Higgs boson production at colliders in the singlet-triplet scotogenic dark matter model

Díaz

Rojas

Urrutia-Quiroga

et al. 2017

J. High Energ. Phys.

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Abstract:We consider the possibility that the dark matter particle is a scalar WIMP messenger associated to neutrino mass generation, made stable by the same symmetry responsible for the radiative origin of neutrino mass. We focus on some of the implications of this proposal as realized within the singlet-triplet scotogenic dark matter model. We identify parameter sets consistent both with neutrino mass and the observed dark matter abundance. Finally we characterize the expected phenomenological profile of heavy Higgs boson physics at the LHC as well as at future linear Colliders.

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“…The quartic couplings are chosen so that the low energy scalar potential is bounded from below. Those conditions are given by [17] …”

Section: The Scalar Potentialmentioning

confidence: 99%

Section: Neutrino Massmentioning

confidence: 99%

Heavy Higgs boson production at colliders in the singlet-triplet scotogenic dark matter model

Díaz

Rojas

Urrutia-Quiroga

et al. 2017

J. High Energ. Phys.

Self Cite

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show abstract

“…Here the trace runs over the SU (2) indices, the mass matrix M Σ (but not the NP Yukawa couplings Y ) is assumed to be flavor diagonal, D denotes the covariant derivative, 3 It is worth mentioning that the evolution of the model parameters via the renormalization group equations may induce a non-zero vacuum expectation value for φ 0 at high scales, leading to the spontaneous breaking of the Z2 symmetry. This situation, that indeed occurs in the minimal scotogenic model [30], may be naturally avoided extending the model with a Z2-even real scalar-triplet, as shown in [54] in the context of the scotogenic model where a fermion singlet is replaced by a fermion triplet [37]. This solution, where the evolution of the couplings of the scalar sector is modified by the extention of the scalar sector, is fully applicable to our case.…”

Section: Lagrangianmentioning

confidence: 95%

Radiative type III seesaw model and its collider phenomenology

et al. 2016

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We analyze the present bounds of a scotogenic model, the Radiative Type III Seesaw (RSIII), in which an additional scalar doublet and at least two fermion triplets of SU (2) L are added to the Standard Model (SM). In the RSIII the new physics (NP) sector is odd under an exact global Z 2 symmetry. This symmetry guaranties that the lightest NP neutral particle is stable, providing a natural dark matter (DM) candidate, and leads to naturally suppressed neutrino masses generated by a one-loop realization of an effective Weinberg operator. We focus on the region with the highest sensitivity in present and future LHC searches, with light scalar DM and at least one NP fermion triplet at the sub-TeV scale. This region allows for significant production cross-sections of NP fermion pairs at the LHC. We reinterpret a set of searches for supersymmetric particles at the LHC obtained using the package CheckMATE, to set limits on our model as a function of the masses of the NP particles and their Yukawa interactions. The most sensitive search channel is found to be dileptons plus missing transverse energy. In order to target the case of tau enhanced decays and the case of compressed spectra we reinterpret the recent slepton and chargino search bounds by ATLAS. For a lightest NP fermion triplet with a maximal branching ratio to either electrons or muons we exclude NP fermion masses of up to 650 GeV, while this bound is reduced to approximately 400 GeV in the tau-philic case. Allowing for a general flavor structure we set limits on the Yukawa couplings, which are directly related to the neutrino flavor structure.

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“…[2][3][4][5][6][7][8]). However, we shall see that the situation differs in the SI model, due to additional annihilation processes mediated by the dilaton.…”

Section: Jhep06(2016)182mentioning

confidence: 99%

“…In this approach, neutrinos acquire mass as a radiative effect, at the one-loop level, due to interactions with a Z 2 -odd sector that includes DM candidates. The resulting theory gives a simple model for neutrino mass and DM, and has been well-studied in the literature [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The scale-invariant scotogenic model

Ahriche

McDonald

Nasri

2016

J. High Energ. Phys.

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We investigate a minimal scale-invariant implementation of the scotogenic model and show that viable electroweak symmetry breaking can occur while simultaneously generating one-loop neutrino masses and the dark matter relic abundance. The model predicts the existence of a singlet scalar (dilaton) that plays the dual roles of triggering electroweak symmetry breaking and sourcing lepton number violation. Important constraints are studied, including those from lepton flavor violating effects and dark matter direct-detection experiments. The latter turn out to be somewhat severe, already excluding large regions of parameter space. None the less, viable regions of parameter space are found, corresponding to dark matter masses below (roughly) 10 GeV and above 200 GeV.

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Consistency of WIMP Dark Matter as radiative neutrino mass messenger

Cited by 46 publications

References 45 publications

Heavy Higgs boson production at colliders in the singlet-triplet scotogenic dark matter model

Heavy Higgs boson production at colliders in the singlet-triplet scotogenic dark matter model

Radiative type III seesaw model and its collider phenomenology

The scale-invariant scotogenic model

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