Inverse seesaw model with global 
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 symmetry

Dey, Ujjal Kumar; Nomura, Takaaki; Okada, Hiroshi

doi:10.1103/physrevd.100.075013

Cited by 7 publications

(7 citation statements)

References 38 publications

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“…such that 5 We will see M D /M L 1 is demanded by LFVs in the subsection III B. δμ 22 (33) M L would be rather natural, since μ 22( 33) is induced at one-loop level while M L is bare mass.…”

Section: Neutrino Mass Generationmentioning

confidence: 99%

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A radiatively induced inverse seesaw model with hidden U(1) gauge symmetry

2022

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We propose an inverse seesaw scenario under hidden U(1) gauge symmetry, having rather natural hierarchies among neutral fermion mass scales. The hierarchies are derived from theory and experimental constraints. The theory requires Majorana exotic masses have to be induced at one-loop level. The experimental side requests that the Dirac mass terms has to be highly suppressed to satisfy the constraints from the lepton flavor violations (LFVs) such as $$\mu \rightarrow e\gamma $$ μ → e γ . In order to induce such a small Majorana exotic masses we introduce exotic fermions and bosons that also provide us additional intriguing phenomenologies such as muon anomalous magnetic moment, dark matter candidate as well as LFVs and deviations in leptonic Z decays. We analyze these phenomenologies including neutrino oscillation data numerically, and show allowed region. Finally, we discuss the DM candidate in both the cases of fermion and scalar boson, where we focus on rather lighter range that is equal or less than 10 GeV. The dominant contributions originate from interactions of hidden gauge sector, and we show allowed ranges for both cases.

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Section: Neutrino Mass Generationmentioning

confidence: 99%

“…Since our model has the following hierarchies δμ 22 (33) , M D << M L , 5 the inverse seesaw mass matrix can be block diagonalized by unitary matrix U ν to obtain the mass matrix of the light (active) neutrinos and heavy neutrinos as…”

Section: Neutrino Mass Generationmentioning

confidence: 99%

A radiatively induced inverse seesaw model with hidden U(1) gauge symmetry

2022

Self Cite

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“…where v H is the vacuum expectation value of the SU (2) L Higgs doublet and satisfies the relation: v 2 H + v 2 ∆ (246 GeV) 2 [101,102]. The ρ-parameter describes the relative coupling strength between the Higgs bosons and the gauge bosons, and can be precisely determined from experiments.…”

Section: The Modelmentioning

confidence: 99%

Connection between νn→ν¯n¯ reactions and n−
Hao
¹

2020
Phys. Rev. D
3
0
1
0
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In this work, we investigate the connection and compatibility between νn →νn reactions and n-n oscillations based on the SU (3)c×SU (2)L×U (1) symmetry model with additional Higgs triplets. We explore the possibility that the scattering process νn →νn produced by low-energy solar neutrinos gives rise to an unavoidable background in the measurements of n-n oscillations. We focus on two different scenarios, depending on whether the (B − L) symmetry could be broken. We analyze the interplay of the various constraints on the two processes and their observable consequences. In the scenario where both (B + L) and (B − L) could be broken, we point out that if all the requirements, mainly arising from the type-II seesaw mechanism, are satisfied, the parameter space would be severely constrained. In this case, although the masses of the Higgs triplet bosons could be within the reach of a direct detection at the LHC or future high-energy experiments, the predicted n-n oscillation times would be completely beyond the detectable regions of the present experiments. In both scenarios, the present experiments are unable to distinguish a νn →νn reaction event from a n-n oscillation event within the accessible energy range. Nevertheless, if any of the two processes is detected, there could be signal associated with new physics beyond the Standard Model.

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“…Literature survey shows there are many flavor symmetries either discrete A 4 [23][24][25], S 3 [26][27][28][29], S 4 [30][31][32] etc. or continuous U (1) B−L [33][34][35][36][37], U (1) H [38][39][40], U (1) Le−Lτ [41,42] etc., which can generate the tiny neutrino masses and also accommodate the observed neutrino oscillation data with the help of some additional scalars and perturbation (wherever required). As aforesaid, inclusion of flavons affects the neatness of the model and the predictability of the model is hampered because of the higher dimensional operators.…”

Section: Introductionmentioning

confidence: 99%

Linear seesaw in $A^\prime_5$ modular symmetry with Leptogenesis

Behera¹,

Mohanta²

2022

Preprint

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We investigate the implication of modular A 5 symmetry on neutrino oscillation phenomenology in the linear seesaw framework. In order to achieve the well defined mass structure for the light active neutrinos as dictated by the linear seesaw mechanism, we introduce six heavy fermion fields along with a weighton. The notable feature of modular symmetry is that, it reduces the usage of flavon fields significantly. In addition, the Yukawa couplings transform non-trivially under the flavor symmetry group and expressed in terms of the Dedekind eta functions, the q expansion of which renders numerical simplicity in calculations. We demonstrate that the model framework diligently accommodates all the neutrino oscillation data. Alongside, we also scrutinize the effect of CP asymmetry generated from the lightest heavy fermion decay for explaining the observed baryon asymmetry through the phenomenon of leptogenesis.

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Inverse seesaw model with global U(1)H symmetry

Cited by 7 publications

References 38 publications

A radiatively induced inverse seesaw model with hidden U(1) gauge symmetry

A radiatively induced inverse seesaw model with hidden U(1) gauge symmetry

Connection between νn→ν¯n¯ reactions and n−
Hao
¹

2020
Phys. Rev. D
3
0
1
0
View full text Add to dashboard Cite

Linear seesaw in $A^\prime_5$ modular symmetry with Leptogenesis

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Inverse seesaw model with global U(1)H symmetry

Cited by 7 publications

References 38 publications

A radiatively induced inverse seesaw model with hidden U(1) gauge symmetry

A radiatively induced inverse seesaw model with hidden U(1) gauge symmetry

Connection between νn→ν¯n¯ reactions and n−Hao1 2020Phys. Rev. D3010View full textAdd to dashboardCite

Linear seesaw in $A^\prime_5$ modular symmetry with Leptogenesis

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Product

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About

Connection between νn→ν¯n¯ reactions and n−
Hao
¹

2020
Phys. Rev. D
3
0
1
0
View full text Add to dashboard Cite