Confronting four zero neutrino Yukawa textures with 
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-dominated leptogenesis

Zhang, Jue

doi:10.1103/physrevd.91.073012

Cited by 9 publications

(2 citation statements)

References 110 publications

(133 reference statements)

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“…In leptogenesis we usually work in the so-called weak basis, where the charged-lepton Yukawa matrix and the right-handed Majorana matrix are diagonal with real, positive entries [28]. After spontaneous breaking of the SU (5) × T 13 × Z 12 symmetry, the relevant terms in the Lagrangian are…”

Section: Rotating To the Weak Basismentioning

confidence: 99%

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Leptogenesis from the Asymmetric Texture

Rahat

2020

Preprint

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We investigate non-resonant thermal leptogenesis in the context of the SU (5) × T 13 "asymmetric texture", where both Dirac and Majorana CP violation arise from a single phase in the tribimaximal seesaw mixing matrix. We show that the baryon asymmetry of the universe can be explained in this model only when flavor effects are considered for right-handed neutrino masses of O(10 9 − 10 12 ) GeV. The sign of the baryon asymmetry also determines the sign of the previously predicted Dirac ¨C P phase |δ CP | = 1.32π, consistent with the latest global fit δ P DG CP = 1.37 ± 0.17π.

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Section: Rotating To the Weak Basismentioning

confidence: 99%

“…The flavor-dependent CP -asymmetry parameter ε iα represents the B − L asymmetry produced by the decay of each N i into α and Higgs. It is perturbatively calculated from the interference of the tree-level with the one-loop and the self-energy diagrams when [28,36]:…”

Section: "Flavored" Leptogenesismentioning

confidence: 99%

Leptogenesis from the Asymmetric Texture

Rahat

2020

Preprint

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SuccessfulN₂leptogenesis with flavour coupling effects in realistic unified models

Bari¹,

King²

2015

J. Cosmol. Astropart. Phys.

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In realistic unified models involving so-called SO(10)-inspired patterns of Dirac and heavy right-handed (RH) neutrino masses, the lightest right-handed neutrino N 1 is too light to yield successful thermal leptogenesis, barring highly fine tuned solutions, while the second heaviest right-handed neutrino N 2 is typically in the correct mass range. We show that flavour coupling effects in the Boltzmann equations may be crucial to the success of such N 2 dominated leptogenesis, by helping to ensure that the flavour asymmetries produced at the N 2 scale survive N 1 washout. To illustrate these effects we focus on N 2 dominated leptogenesis in an existing model, the A to Z of flavour with Pati-Salam, where the neutrino Dirac mass matrix may be equal to an up-type quark mass matrix and has a particular constrained structure. The numerical results, supported by analytical insight, show that in order to achieve successful N 2 leptogenesis, consistent with neutrino phenomenology, requires a "flavour swap scenario" together with a less hierarchical pattern of RH neutrino masses than naively expected, at the expense of some mild fine-tuning. In the considered A to Z model neutrino masses are predicted to be normal ordered, with an atmospheric neutrino mixing angle well into the second octant and the Dirac phase δ 20 • , a set of predictions that will be tested in the next years in neutrino oscillation experiments. Flavour coupling effects may be relevant for other SO(10)-inspired unified models where N 2 leptogenesis is necessary. *

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Leptogenesis, radiative neutrino masses and inert Higgs triplet dark matter

2016

J. Cosmol. Astropart. Phys.

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Abstract. We extend the standard model by three types of inert fields including Majorana fermion singlets/triplets, real Higgs singlets/triplets and leptonic Higgs doublets. In the presence of a softly broken lepton number and an exactly conserved Z 2 discrete symmetry, these inert fields together can mediate a one-loop diagram for a Majorana neutrino mass generation. The heavier inert fields can decay to realize a successful leptogenesis while the lightest inert field can provide a stable dark matter candidate. As an example, we demonstrate the leptogenesis by the inert Higgs doublet decays. We also perform a systematic study on the inert Higgs triplet dark matter scenario where the interference between the gauge and Higgs portal interactions can significantly affect the dark matter properties.

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Confronting four zero neutrino Yukawa textures with N2 -dominated leptogenesis

Cited by 9 publications

References 110 publications

Leptogenesis from the Asymmetric Texture

Leptogenesis from the Asymmetric Texture

SuccessfulN₂leptogenesis with flavour coupling effects in realistic unified models

Leptogenesis, radiative neutrino masses and inert Higgs triplet dark matter

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Confronting four zero neutrino Yukawa textures with N2 -dominated leptogenesis

Cited by 9 publications

References 110 publications

Leptogenesis from the Asymmetric Texture

Leptogenesis from the Asymmetric Texture

SuccessfulN2leptogenesis with flavour coupling effects in realistic unified models

Leptogenesis, radiative neutrino masses and inert Higgs triplet dark matter

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Product

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SuccessfulN₂leptogenesis with flavour coupling effects in realistic unified models