Viable textures for the fermion sector

Hernández, A. E. Cárcamo; Varzielas, Ivo de Medeiros

doi:10.1088/0954-3899/42/6/065002

Cited by 15 publications

(6 citation statements)

References 44 publications

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“…The SM quark mass textures given above indicate that the Cabibbo mixing emerges from the down type quark sector, whereas the remaining mixing angles receive contributions from both up and down type quark sectors. Indeed, this texture is a generalisation of the particular case referred to as the mixing inspired texture [55], in which the two small quark mixing angles would arise solely from the up type quark sector. Besides that, the low energy quark flavour data indicates that the CP violating phase in the quark sector is associated with the quark mixing angle in the 1-3 plane, as follows from the Standard parametrization of the quark mixing matrix.…”

Section: Quark Masses and Mixingsmentioning

confidence: 85%

“…With respect to the flavour problem, a viable form of the Yukawa structure for quarks is the mixing inspired texture where the Cabibbo angle originates from the down-quark sector and the remaining (smaller) mixing angles come from the more hierarchical up quark mixing [55]. We build a model based on the non-Abelian group ∆ (27) which achieves a generalisation of this mixing inspired texture for the quarks, and is therefore phenomenologically viable.…”

Section: Introductionmentioning

confidence: 99%

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Fermion masses and mixings and dark matter constraints in a model with radiative seesaw mechanism

Bernal

Hernández

Varzielas

et al. 2018

J. High Energ. Phys.

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We formulate a predictive model of fermion masses and mixings based on a ∆(27) family symmetry. In the quark sector the model leads to the viable mixing inspired texture where the Cabibbo angle comes from the down quark sector and the other angles come from both up and down quark sectors. In the lepton sector the model generates a predictive structure for charged leptons and, after radiative seesaw, an effective neutrino mass matrix with only one real and one complex parameter. We carry out a detailed analysis of the predictions in the lepton sector, where the model is only viable for inverted neutrino mass hierarchy, predicting a strict correlation between θ 23 and θ 13 . We show a benchmark point that leads to the best-fit values of θ 12 , θ 13 , predicting a specific sin 2 θ 23 0.51 (within the 3σ range), a leptonic CP-violating Dirac phase δ 281.6 • and for neutrinoless double-beta decay m ee 41.3 meV. We turn then to an analysis of the dark matter candidates in the model, which are stabilized by an unbroken Z 2 symmetry. We discuss the possibility of scalar dark matter, which can generate the observed abundance through the Higgs portal by the standard WIMP mechanism. An interesting possibility arises if the lightest heavy Majorana neutrino is the lightest Z 2 -odd particle. The model can produce a viable fermionic dark matter candidate, but only as a feebly interacting massive particle (FIMP), with the smallness of the coupling to the visible sector protected by a symmetry and directly related to the smallness of the light neutrino masses.

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Section: Quark Masses and Mixingsmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Fermion masses and mixings and dark matter constraints in a model with radiative seesaw mechanism

Bernal

Hernández

Varzielas

et al. 2018

J. High Energ. Phys.

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show abstract

“…11 and λ (l) 22 to reproduce the experimental values of the charged lepton masses finding the following best fit result:…”

Section: Lepton Masses and Mixingsmentioning

confidence: 89%

“…This warped S 3 flavor model generates the viable and predictive quark textures proposed in [22] as shown in section III. We now proceed to analyze the lepton sector of the model.…”

Section: Lepton Masses and Mixingsmentioning

confidence: 91%

Novel Randall-Sundrum model withS3flavor symmetry

2016

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We propose a simple and predictive model of fermion masses and mixing in a warped extra dimension, with the smallest discrete non-Abelian group S3 and the discrete symmetries Z2 ⊗ Z4. Standard Model fields propagate in the bulk and the mass hierarchies and mixing angles are accounted for the fermion zero modes localization profiles, similarly to the the Randall-Sundrum (RS) model. To the best of our knowledge, this model is the first implementation of an S3 flavor symmetry in this type of warped extra dimension framework. Our model successfully describes the fermion masses and mixing pattern and is consistent with the current low energy fermion flavor data. The discrete flavor symmetry in our model leads to predictive mixing inspired textures, where the Cabbibo mixing arises from the down type quark sector whereas up type quark sector contributes to the remaining mixing angles.

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“…The texture zero pattern similar with our texture zero pattern has also been used for a model of quark and lepton mass matrices in [31] which give a consistent prediction with the experimental data. A different viable textures for quarks, where only the Cabibbo mixing arises from the down sector, and extend to the charged leptons while constructing a complementary neutrino structure that leads to viable lepton masses and mixing can be read in [32]. By referring to experimental value of mixing angle θ13 in Eq.…”

Section: Neutrino Mixing Marix: Bm Tbm and DCmentioning

confidence: 99%

Neutrino masses from an approximate mixing matrix with $θ_{13}\neq 0$

Damanik¹

2016

Preprint

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An approximate neutrino mixing matrix is formutated by using the standard neutrino mixing matrix as a basis and experimental data of neutrino oscillations as inputs. By using the resulted approximate neutrino mixing matrix to proceed the neutrino mass matrix and constraining the resulted neutrino mass matrix with zero texture: Mν(1, 1) = Mν(1, 3) = Mν (3, 1) = 0, we can have neutrino masses as function of mixing angle θ13 with normal hierarchy: m1 < m2 < m3. By taking the central value of mixing angle θ13 = 9 o that gives ǫ = 0.16 and using the squared mass difference: ∆m 2 32 for normal hierarchy, we then obtained neutrino masses: m1 = 0.00847 eV, m2 = 0.01215 eV, and m3 = 0.05062 eV which can predict the squared mass difference for solar neutrino precisely with the experimental result: ∆m 2 21 = 7.59 × 10 −5 eV 2 .

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Viable textures for the fermion sector

Cited by 15 publications

References 44 publications

Fermion masses and mixings and dark matter constraints in a model with radiative seesaw mechanism

Fermion masses and mixings and dark matter constraints in a model with radiative seesaw mechanism

Novel Randall-Sundrum model withS3flavor symmetry

Neutrino masses from an approximate mixing matrix with $θ_{13}\neq 0$

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