Minimal 3-loop neutrino mass models and charged lepton flavor violation

Cepedello, Ricardo; Hirsch, Martin; Rocha-Morán, Paulina; Vicente, Avelino

doi:10.1007/jhep08(2020)067

Cited by 10 publications

(9 citation statements)

References 66 publications

(109 reference statements)

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“…Lepton flavour violation: neutrino masses of the right size within the model require C eτ /m ρ 0.1/TeV, C µµ /m ρ 10 −2 /TeV and C µτ /m ρ 10 −3 /TeV [8]. As a consequence, the lepton flavour violating processes µ → e γ and τ − → e + µ − µ − strongly constrain the model [25]. By inspecting the various present bounds for lepton flavour violation processes in eq.…”

Section: Model 1: Inert Doublet Dark Matter (The Cocktail Model)mentioning

confidence: 99%

“…As a result, the current most important constraints on the doubly charged scalar ρ from lepton flavour violation are (see e.g. [16,[23][24][25]) 2 (3.1) For specific models within Class 1, some of the above lepton flavour violation rates can become large, which generally leads to stringent constraints within these models [25].…”

Section: Classmentioning

confidence: 99%

“…(2.4) implies C eτ (16π 2 ) (L−1) . 10 As a result of this combination of unavoidably sizable couplings and not too large masses of BSM states, a rich phenomenology is expected in any particular model realization within this class, with strong constraints on the parameter space arising from the interplay between low and high-energy observables [8,9,16,17,25]. In the following we discuss in detail two renormalizable models belonging to Class 1 which yield neutrino masses at 3-loops and include a DM particle.…”

Section: Jhep11(2020)070mentioning

confidence: 99%

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Lepton number violating operators with standard model gauge fields: a survey of neutrino masses from 3-loops and their link to dark matter

Gustafsson

Rivera

2020

J. High Energ. Phys.

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We investigate neutrino mass generation scenarios where the lepton number breaking new physics does not interact with Standard Model (SM) quarks and couples only to the SM right-handed charged lepton chirality. The lowest-order lepton number violating effective operator which describes this framework is a unique dimension nine operator involving SM gauge fields, $$ {\mathcal{O}}_9 $$ O 9 . We find that there are two possible classes of new physics scenarios giving rise to this $$ {\mathcal{O}}_9 $$ O 9 operator. In these scenarios neutrino masses are induced radiatively via dark matter interactions, linking the dark matter to a natural explanation for the smallness of neutrino masses compared to the electroweak scale. We discuss the phenomenology and existing constraints in the different neutrino mass models within each class. In particular, we analyze the important interplay between neutrino mixing and neutrinoless double β-decay in order to predict characteristic signatures and disfavour certain scenarios.

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Section: Model 1: Inert Doublet Dark Matter (The Cocktail Model)mentioning

confidence: 99%

Section: Classmentioning

confidence: 99%

Section: Jhep11(2020)070mentioning

confidence: 99%

See 1 more Smart Citation

Lepton number violating operators with standard model gauge fields: a survey of neutrino masses from 3-loops and their link to dark matter

Gustafsson

Rivera

2020

J. High Energ. Phys.

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“…Neutrino masses are generated at the two-loop level. The model where the neutrino masses are induced at a three-loop level is also considered (so-called Cocktail model) [55,56].…”

Section: Radiative Neutrino Massmentioning

confidence: 99%

“…The model for (2) has a Yukawa coupling Nηℓ (= Nη + e L −Nη 0 ν L ) to generate the neutrino mass at the one-loop level, where the neutral component of the SU(2) L doublet η does not acquire a vev (η is often called an inert Higgs doublet). Alternatively, the model has a NS + e R type coupling (S + is a hypercharge +1 SU(2) L singlet scalar), and the neutrino masses are generated at the three-loop level [56,58,59]. The Nη + e L and NS + e R couplings can induce the transition operators via box diagrams.…”

Section: Radiative Neutrino Massmentioning

confidence: 99%

Models of the Muonium to Antimuonium Transition

Fukuyama,

Mimura,

Uesaka

2021

Preprint

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Muonium is a bound state composed of an antimuon and an electron, and it constitutes a hydrogen-like atom. Because of the absence of the hadronic matter in the bound state, the muonium is a useful probe to explore new physics being free from the hadronic uncertainties. The process of the muonium-to-antimuonium transition is considered to be effective to identify fundamental interactions which relate to the lepton flavor and lepton number violation. New experiments are being planned at J-PARC in Japan and CSNS in China, and it is expected to attract more attention in the near future. In this paper, we will study what kind of model can be verified in the next generation of the muonium-to-antimuonium transition search experiments while escaping the limitations from other experiments. Though the transition probability is strongly suppressed by the lepton flavor conservation in the standard model, it can be much larger by the exchanges of neutral and doubly charged bosons, and by box loop diagrams in new physics beyond the standard model. We study the neutrino models with heavy Majorana neutrinos at TeV scale, a type-II seesaw model, left-right models, and models for radiative neutrino masses such as the Zee-Babu model in particular, in addition to other possible models to induce the sizable transition probability, which can be tested in the forthcoming experiments.

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Phenomenological and cosmological implications of a scotogenic three-loop neutrino mass model

Abada

Bernal

Hernández

et al. 2023

J. High Energ. Phys.

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We propose a scotogenic model for generating neutrino masses through a three-loop seesaw. It is a minimally extended inert doublet model with a spontaneously broken global symmetry U(1)′ and a preserved ℤ2 symmetry. The three-loop suppression allows the new particles to have masses at the TeV scale without fine-tuning the Yukawa couplings. The model leads to a rich phenomenology while satisfying all the current constraints imposed by neutrinoless double-beta decay, charged-lepton flavor violation, and electroweak precision observables. The relatively large Yukawa couplings lead to sizable rates for charged lepton flavor violation processes, well within future experimental reach. The model could also successfully explain the W mass anomaly and provides viable fermionic or scalar dark matter candidates.

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Minimal 3-loop neutrino mass models and charged lepton flavor violation

Cited by 10 publications

References 66 publications

Lepton number violating operators with standard model gauge fields: a survey of neutrino masses from 3-loops and their link to dark matter

Lepton number violating operators with standard model gauge fields: a survey of neutrino masses from 3-loops and their link to dark matter

Models of the Muonium to Antimuonium Transition

Phenomenological and cosmological implications of a scotogenic three-loop neutrino mass model

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