Radiative generation of lepton masses

Okada, Hiroshi; Yagyu, Kei

doi:10.1103/physrevd.89.053008

Cited by 53 publications

(24 citation statements)

References 44 publications

(20 reference statements)

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“…This assumption is also made in the framework of an extended inert two Higgs doublet model addressed to explain the charged lepton mass hierarchy [4]. Within the benchmark previously described, the charged lepton masses take the form:…”

Section: Furthermore I Set a (U)mentioning

confidence: 99%

A novel and economical explanation for SM fermion masses and mixings

Hernández

2016

Eur. Phys. J. C

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I propose the first multiscalar singlet extension of the standard model (SM), which generates tree level top quark and exotic fermion masses as well as one and three loop level masses for charged fermions lighter than the top quark and for light active neutrinos, respectively, without invoking electrically charged scalar fields. That model, which is based on the S 3 × Z 8 discrete symmetry, successfully explains the observed SM fermion mass and mixing pattern. The charged exotic fermions induce one loop level masses for charged fermions lighter than the top quark. The Z 8 charged scalar singlet χ generates the observed charged fermion mass and quark mixing pattern.

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Section: Furthermore I Set a (U)mentioning

confidence: 99%

A novel and economical explanation for SM fermion masses and mixings

Hernández

2016

Eur. Phys. J. C

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“…Recently, models which generate both masses of charged-leptons and neutrinos at the loop level have also been constructed in Refs. [55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Inert extension of the Zee-Babu model

Okada¹,

Toma

Yagyu

2014

Phys. Rev. D

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We propose a two-loop induced Zee-Babu type neutrino mass model at the TeV scale.Although there is no dark matter candidate in the original Zee-Babu model, that is contained in our model by introducing an unbroken discrete Z 2 symmetry. The discrepancy between the experimental value of the muon anomalous magnetic moment (muon g − 2) and its prediction in the standard model can be explained by contributions from additional vectorlike charged-leptons which are necessary to give non-zero neutrino masses. The mass of vector-like leptons to be slightly above 300 GeV is favored and allowed from the muon g − 2 and the current LHC data. We find that from the structure of neutrino mass matrix, doublycharged scalar bosons in our model can mainly decay into the same-sign and same-flavour dilepton plus missing transverse momentum. By measuring an excess of these events at the LHC, our model can be distinguished from the other models including doubly-charged scalar bosons.

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“…We take two values, 10 GeV (black line) and 1 GeV (red line), for the mass difference between m η 0 R and m χ + m φ R in Equation (28). The other parameters are taken as the same in Equations (27)(28)(29)(30)(31). We can see the scalar coupling γ 5 increases drastically as m φ R increases for m φ R > ∼ 290 GeV.…”

Section: Multicomponent Dark Matter Systemmentioning

confidence: 99%

Multicomponent Dark Matter in Radiative Seesaw Models

2017

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We discuss radiative seesaw models, in which an exact Z 2 × Z ′ 2 symmetry is imposed. Due to the exact Z 2 × Z ′ 2 symmetry, neutrino masses are generated at a two-loop level and at least two extra stable electrically neutral particles are predicted. We consider two models: one has a multi-component dark matter system and the other one has a dark radiation in addition to a dark matter. In the multi-component dark matter system, non-standard dark matter annihilation processes exist. We find that they play important roles in determining the relic abundance and also responsible for the monochromatic neutrino lines resulting from the dark matter annihilation process. In the model with the dark radiation, the structure of the Yukawa coupling is considerably constrained and gives an interesting relationship among cosmology, lepton flavor violating decay of the charged leptons and the decay of the inert Higgs bosons.

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Radiative generation of lepton masses

Cited by 53 publications

References 44 publications

A novel and economical explanation for SM fermion masses and mixings

A novel and economical explanation for SM fermion masses and mixings

Inert extension of the Zee-Babu model

Multicomponent Dark Matter in Radiative Seesaw Models

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