Generalizing the Scotogenic model

Escribano, Pablo; Reig, Mario; Vicente, Avelino

doi:10.1007/jhep07(2020)097

Cited by 42 publications

(34 citation statements)

References 102 publications

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“…The ScSM also has interesting features in light of the model viability up to high-energy scales [19,[63][64][65]. The trilinear coupling κ, due to the presence of the scalar singlet, gives positive contributions to the RGE evolution of the new scalar mass-squared parameters if it is real, thereby helping prevent the breaking of the model symmetries even in the absence of finite temperature effects.…”

Section: Z 2 Symmetry At High Energiesmentioning

confidence: 99%

“…In this context, the Scotogenic Model (ScM), first proposed by Ernest Ma (2006) [3] (see also refs. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]), emerges as one of the simplest joint solutions for neutrino masses and DM. It adds a new scalar doublet Φ and new Majorana singlets ψ i (i ≥ 2), all of them charged under a Z 2 symmetry.…”

Section: Introductionmentioning

confidence: 99%

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The ScotoSinglet Model: a scalar singlet extension of the Scotogenic Model

Beniwal

Herrero-García

Leerdam

et al. 2021

J. High Energ. Phys.

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The Scotogenic Model is one of the most minimal models to account for both neutrino masses and dark matter (DM). In this model, neutrino masses are generated at the one-loop level, and in principle, both the lightest fermion singlet and the lightest neutral component of the scalar doublet can be viable DM candidates. However, the correct DM relic abundance can only be obtained in somewhat small regions of the parameter space, as there are strong constraints stemming from lepton flavour violation, neutrino masses, electroweak precision tests and direct detection. For the case of scalar DM, a sufficiently large lepton-number-violating coupling is required, whereas for fermionic DM, coannihilations are typically necessary. In this work, we study how the new scalar singlet modifies the phenomenology of the Scotogenic Model, particularly in the case of scalar DM. We find that the new singlet modifies both the phenomenology of neutrino masses and scalar DM, and opens up a large portion of the parameter space of the original model.

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Section: Z 2 Symmetry At High Energiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The ScotoSinglet Model: a scalar singlet extension of the Scotogenic Model

Beniwal

Herrero-García

Leerdam

et al. 2021

J. High Energ. Phys.

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“…The studies of one-loop Dirac neutrino masses have typically focused on finding specific anomaly-free solutions of this two kinds of symmetries, see, e.g., Refs. [11,[26][27][28][29]. Only few studies have performed systematic analysis of SM extensions with an additional anomaly-free gauge U (1) symmetry to generate Dirac neutrino masses [30,31].…”

Section: Introductionmentioning

confidence: 99%

Anomaly-free Abelian gauge symmetries with Dirac seesaws

Bernal

Restrepo

2021

Eur. Phys. J. C

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We perform a systematic analysis of Standard Model extensions with an additional anomaly-free gauge U(1) symmetry, to generate tree-level Dirac neutrino masses. An anomaly-free symmetry demands nontrivial conditions on the charges of the unavoidable new states. An intensive scan was performed, looking for solutions generating neutrino masses by the type-I and type-II tree-level Dirac seesaw mechanism, via operators with dimension 5 and 6, that correspond to active or dark symmetries. Special attention was paid to the cases featuring no extra massless chiral fermions or multicomponent dark matter with unconditional stability.

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“…[7][8][9][10]. Phenomenological aspects of this class of models have then been presented in numerous subsequent studies [11][12][13][14][15][16][17][18][19][20][21]. A summary and classification in terms of topologies related to neutrino mass generation of more general scotogenic setups has been published in ref.…”

Section: Jhep12(2021)116 1 Introductionmentioning

confidence: 99%

Dark matter and lepton flavour phenomenology in a singlet-doublet scotogenic model

Sarazin

Bernigaud

Herrmann

2021

J. High Energ. Phys.

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We study the dark matter phenomenology of scotogenic frameworks through a rather illustrative model extending the Standard Model by scalar and fermionic singlets and doublets. Such a setup is phenomenologically attractive since it provides the radiative generation of neutrino masses, while also including viable candidates for cold dark matter. We employ a Markov Chain Monte Carlo algorithm to explore the associated parameter space in view of numerous constraints stemming from the Higgs mass, the neutrino sector, dark matter, and lepton-flavour violating processes. After a general discussion of the results, we focus on the case of fermionic dark matter, which remains rather uncovered in the literature so far. We discuss the associated phenomenology and show that in this particular case a rather specific mass spectrum is expected with fermion masses just above 1 TeV. Our study may serve as a guideline for future collider studies.

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Generalizing the Scotogenic model

Cited by 42 publications

References 102 publications

The ScotoSinglet Model: a scalar singlet extension of the Scotogenic Model

The ScotoSinglet Model: a scalar singlet extension of the Scotogenic Model

Anomaly-free Abelian gauge symmetries with Dirac seesaws

Dark matter and lepton flavour phenomenology in a singlet-doublet scotogenic model

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