Deviations from tribimaximal neutrino mixing in the type-II seesaw model and leptogenesis

Chan, A. H.; Fritzsch, Harald; Luo, Shu; Zhang, Xing

doi:10.1103/physrevd.76.073009

Cited by 33 publications

(9 citation statements)

References 93 publications

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“…Another simple example of this kind is the so-called minimal type-(I+II) seesaw model which contains a single heavy Majorana neutrino and the Higgs triplet [537,538,539,540]. In this special case Eq.…”

Section: On the (3+2) And (3+1) Flavor Mixing Scenariosmentioning

confidence: 99%

Flavor structures of charged fermions and massive neutrinos

Xing

2019

Preprint

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116

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Most of the free parameters in the Standard Model (SM) -a quantum field theory which has successfully elucidated the behaviors of strong, weak and electromagnetic interactions of all the known fundamental particles, come from the lepton and quark flavors. The discovery of neutrino oscillations has proved that the SM is incomplete, at least in its lepton sector; and thus the door of opportunity is opened to exploring new physics beyond the SM and solving a number of flavor puzzles. In this review article we give an overview of important progress made in understanding the mass spectra, flavor mixing patterns, CP-violating effects and underlying flavor structures of charged leptons, neutrinos and quarks in the past twenty years. After introducing the standard pictures of fermion mass generation, flavor mixing and CP violation in the SM extended with the presence of massive Dirac or Majorana neutrinos, we briefly summarize current experimental knowledge about the flavor parameters of quarks and leptons. Various ways of describing flavor mixing and CP violation are discussed, the renormalization-group evolution of flavor parameters is illuminated, and the matter effects on neutrino oscillations are interpreted. Taking account of possible extra neutrino species, we propose a standard parametrization of the 6 × 6 flavor mixing matrix and comment on the phenomenological aspects of heavy, keV-scale and light sterile neutrinos. We pay particular attention to those novel and essentially model-independent ideas or approaches regarding how to determine the Yukawa textures of Dirac fermions and the effective mass matrix of Majorana neutrinos, including simple discrete and continuous flavor symmetries. An outlook to the future development in unravelling the mysteries of flavor structures is also given.

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Section: On the (3+2) And (3+1) Flavor Mixing Scenariosmentioning

confidence: 99%

Flavor structures of charged fermions and massive neutrinos

Xing

2019

Preprint

Self Cite

116

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“…( 14) is given by 18). There have been several studies of leptogenesis which assume that the PMNS matrix has tribimaximal form [17,18]. It was shown that mass matrices can be constructed in the seesaw Lagrangian which produce a large enough lepton asymmetry for the leptogenesis mechanism to lead to the baryon asymmetry of the universe.…”

mentioning

confidence: 99%

Tribimaximal Mixing, Leptogenesis, and theta13

Jenkins,

Manohar

2008

Preprint

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“…To minimize the degrees of freedom associated with M L , M D and M R , one may assume that there is only one heavy Majorana neutrino (denoted as N 1 ) in the model with M R and M D being 1 × 1 and 3 × 1 respectively. Such a simplified seesaw scenario is phenomenologically viable [7][8][9][10] and can be referred to as the minimal type-(I+II) seesaw model, whose simplicity makes it interesting and instructive to reveal some salient features of the type-(I+II) seesaw mechanism. We shall focus our attention on this simple case in the present paper.…”

Section: Introductionmentioning

confidence: 99%

Lepton-number-violating decays of singly-charged Higgs bosons in the minimal type-(I+II) seesaw model at the TeV scale

Ren,

Xing

2008

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The lepton-number-violating decays of singly-charged Higgs bosons H ± are investigated in the minimal type-(I+II) seesaw model with one SU (2) L Higgs triplet ∆ and one heavy Majorana neutrino N 1 at the TeV scale. We find that the branching ratios B(H + → l + α ν ) (for α = e, µ, τ ) depend not only on the mass and mixing parameters of three light neutrinos ν i (for i = 1, 2, 3) but also on those of N 1 . Assuming the mass of N 1 to lie in the range of 200 GeV to 1 TeV, we figure out the generous interference bands for the contributions of ν i and N 1 to B(H + → l + α ν ). We illustrate some salient features of such interference effects by considering three typical mass patterns of ν i , and show that the relevant Majorana CP-violating phases can affect the magnitudes of B(H + → l + α ν ) in this parameter region.

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Deviations from tribimaximal neutrino mixing in the type-II seesaw model and leptogenesis

Cited by 33 publications

References 93 publications

Flavor structures of charged fermions and massive neutrinos

Flavor structures of charged fermions and massive neutrinos

Tribimaximal Mixing, Leptogenesis, and theta13

Lepton-number-violating decays of singly-charged Higgs bosons in the minimal type-(I+II) seesaw model at the TeV scale

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