Testing the new CP phase in a supersymmetric model with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msub><mml:mi>Q</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:math> family symmetry by <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:msub><mml:mi>B</mml:mi><mml:mi>s</mml:mi></mml:msub></mml:math> mixing

Kawashima, Kenji; Kubo, Jisuke; Lenz, Alexander

doi:10.1016/j.physletb.2009.09.064

Cited by 28 publications

(8 citation statements)

References 25 publications

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“…In fact, for the rest of the superfields, if they have the subscript I, it means that they transform as doublets under the flavor group, otherwise, the superfields transform as singlets under the flavor group. This flavor structure provides hierarchical quark mass matrices that reproduce the CKM mixing matrix quite well [33][34][35][36][37][38][39]. On the other hand, in the leptonic sector, the first family is assigned to any of singlets of Q 6 , while the other two families are assigned as elements of the flavor doublet, L J with J = 2, 3.…”

Section: The Modelmentioning

confidence: 92%

“…In this context, as a first step we study the masses and flavor mixing in the leptonic sector, where the µ ↔ τ symmetry is only broken in the effective neutrino mass matrix, by the difference m eτ − m eµ = 0, which deviates the atmospheric angle from 45 • and the reactor angle is non zero. In previous works on Q 6 [33][34][35][36][37][38][39], the scalar sector was extended such that three families of doublets H d i and H u i are needed for the mixing. Contrary other models reported in the literature, we will try to explain the contrast between the CKM and PMNS mixing matrices by assigning in a different way the quark and lepton sector under the action of the flavor symmetry, as we will see below.…”

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confidence: 99%

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On Q6 flavor symmetry and the breaking of μ ↔ τ symmetry

Gómez-Izquierdo

Gonzalez-Canales

Mondragón

2017

Int. J. Mod. Phys. A

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In the simplest version of a Q6 flavored supersymmetric model, we analyze the leptonic masses and mixings in the framework of a soft breaking of the µ ↔ τ symmetry. This breaking is controlled by the inequality meτ = meµ in the effective neutrino mass. As a consequence of this breaking, the reactor and atmospheric angle are deviate from 0 • and 45 • , respectively. Such deviations can be enhanced or suppressed by the CP parities in the Majorana phases, so that an analytic study is carried out to remark their importance to constrain the free parameters that accommodate the mixing angles. The normal hierarchy is completely discarded in this model, the inverted hierarchy is less favored than the degenerate one where the reactor and atmospheric angles are in good agreement with the experimental data. Additionally, the model predicts defined regions for the effective neutrino mass decay, the neutrino mass scale and the sum of the neutrino mass in the inverted and degenerate mass spectrum. Thus, this model may be testable by future experiments that focus in neutrinoless double beta decay.

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Section: The Modelmentioning

confidence: 92%

mentioning

confidence: 99%

On Q6 flavor symmetry and the breaking of μ ↔ τ symmetry

Gómez-Izquierdo

Gonzalez-Canales

Mondragón

2017

Int. J. Mod. Phys. A

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“…[1][2][3][4][5]. Several discrete groups such as S 3 , A 4 , S 4 [77][78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94] , D 4 [95][96][97][98][99][100][101][102][103], Q 6 [104][105][106][107][108][109][110][111][112][113][114], T 7 [115][116][117][118][119][120][121][122][123]…”

Section: Introductionmentioning

confidence: 99%

Generating lepton masses and mixings with a heavy vector doublet

Hernández

Vignatti

Zerwekh

2019

J. Phys. G: Nucl. Part. Phys.

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We construct a viable extension of the SM with a heavy vector in the fundamental SU (2) L representation and nine SM singlet scalar fields, consistent with the current SM fermion mass spectrum and fermionic mixing parameters. The small masses for the active neutrinos are generated from radiative seesaw mechanism at one loop level mediated by the neutral components of the heavy vector as well as by the left handed Majorana neutrinos. We carry out an analysis of the predictions in the lepton sector, where the model is only viable in the scenario of inverted neutrino mass ordering. * Electronic address: antonio.carcamo@usm.cl † Electronic address: jonatan.vignatti@sansano.usm.cl ‡ Electronic address: alfonso.zerwekh@usm.cl arXiv:1807.05321v2 [hep-ph]

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“…Models with spontaneously broken flavor symmetries may also produce hierarchical mass structures. Recently, discrete groups such as A 4 [43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62], S 3 , S 4 [84][85][86][87][88][89][90][91][92][93][94], D 4 [95][96][97][98][99][100][101][102][103][104], Q 6 [105][106][107][108], T 7 [109][110][111][112][113][114]…”

Section: Introductionmentioning

confidence: 99%

Fermion masses and mixings in the 3-3-1 model with right-handed neutrinos based on the $$S_3$$ S 3 flavor symmetry

2016

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We propose a 3-3-1 model where the SU (3) C ⊗ SU (3) L ⊗ U (1) X symmetry is extended by S 3 ⊗ Z 3 ⊗ Z 3 ⊗ Z 8 ⊗ Z 16 and the scalar spectrum is enlarged by extra SU (3) L singlet scalar fields. The model successfully describes the observed SM fermion mass and mixing pattern. In this framework, the light active neutrino masses arise via an inverse seesaw mechanism and the observed charged fermion mass and quark mixing hierarchy is a consequence of the Z 3 ⊗ Z 3 ⊗ Z 8 ⊗ Z 16 symmetry breaking at very high energy. The obtained physical observables for both quark and lepton sectors are compatible with their experimental values. The model predicts the effective Majorana neutrino mass parameter of neutrinoless double beta decay to be m ββ = 4 and 48 meV for the normal and the inverted neutrino spectra, respectively. Furthermore, we found a leptonic Dirac CPviolating phase close to π 2 and a Jarlskog invariant close to about 3 × 10 −2 for both normal and inverted neutrino mass hierarchy.

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Testing the new CP phase in a supersymmetric model with Q6 family symmetry by Bs mixing

Cited by 28 publications

References 25 publications

On Q6 flavor symmetry and the breaking of μ ↔ τ symmetry

On Q6 flavor symmetry and the breaking of μ ↔ τ symmetry

Generating lepton masses and mixings with a heavy vector doublet

Fermion masses and mixings in the 3-3-1 model with right-handed neutrinos based on the $$S_3$$ S 3 flavor symmetry

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