Calculable cosmological 
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 violation and resonant leptogenesis

Achelashvili, Avtandil; Tavartkiladze, Zurab

doi:10.1103/physrevd.96.015015

Cited by 6 publications

(25 citation statements)

References 54 publications

(147 reference statements)

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“…As it was shown [46], [17], [15], within considered setup, radiative corrections are crucial for generating cosmological CP violation. In particular, the needed asymmetry is generated at 1-loop level due to λ τ Yukawa coupling provided that the condition (Y ν ) 31 (Y ν ) 32 = 0 is satisfied [15]. Here, to be more generic and to not limit the class of the models, we also include the effects of the λ µ Yukawa coupling in the calculation.…”

Section: Loop Induced Calculable Cosmological Cp Violationmentioning

confidence: 85%

“…This will allow to have viable models and, at the same time because of the minimal number of the additions, we will still have predictive scenarios. The operators (3.9) can be obtained by another sector in such a way as to not affect the forms of T 4,7,9 and M N matrices (one detailed example was presented in [15]). See Sect.…”

Section: Loop Induced Calculable Cosmological Cp Violationmentioning

confidence: 99%

“…(A.17) and (A.18) of Ref. [15]. (For notations and definitions see also Appendix A.2 of the present paper.)…”

Section: Loop Induced Calculable Cosmological Cp Violationmentioning

confidence: 99%

“…For P 1 Texture For this case, using the form of the M ν [given by Eq. (3.21) and derived within our setup] in the relation (3.15) and equating appropriate matrix elements of the both sides, we will be able to calculate the phase φ [18], [15]:…”

Section: Resonant Leptogenesismentioning

confidence: 99%

“…[46], it was shown that the cosmological CP asymmetry arises at 1-loop order. 5 Demonstrated on a specific fully consistent neutrino model [15], this was shown to work well and opened wide prospect for the model building for the low scale resonant leptogenesis.…”

Section: Introductionmentioning

confidence: 98%

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Texture zero neutrino models and their connection with resonant leptogenesis

Achelashvili

Tavartkiladze

2018

Nuclear Physics B

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Within the low scale resonant leptogenesis scenario, the cosmological CP asymmetry may arise by radiative corrections through the charged lepton Yukawa couplings. While in some cases, as one expects, decisive role is played by the λ τ coupling, we show that in specific neutrino textures only by inclusion of the λ µ the cosmological CP violation is generated at 1-loop level.With the purpose to relate the cosmological CP violation to the leptonic CP phase δ, we consider an extension of MSSM with two right handed neutrinos (RHN), which are degenerate in mass at high scales. Together with this, we first consider two texture zero 3×2 Dirac Yukawa matrices of neutrinos. These via see-saw generated neutrino mass matrices augmented by single ∆L = 2 dimension five (d = 5) operator give predictive neutrino sectors with calculable CP asymmetries. The latter is generated through λ µ,τ coupling(s) at 1-loop level. Detailed analysis of the leptogenesis is performed. We also revise some one texture zero Dirac Yukawa matrices, considered earlier, and show that addition of a single ∆L = 2, d = 5 entry in the neutrino mass matrices, together with newly computed 1-loop corrections to the CP asymmetries, give nice accommodation of the neutrino sector and desirable amount of the baryon asymmetry via the resonant leptogenesis even for rather low RHN masses(∼few TeV -10 7 GeV).

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Section: Loop Induced Calculable Cosmological Cp Violationmentioning

confidence: 85%

Section: Loop Induced Calculable Cosmological Cp Violationmentioning

confidence: 99%

“…(A.17) and (A.18) of Ref. [15]. (For notations and definitions see also Appendix A.2 of the present paper.)…”

Section: Loop Induced Calculable Cosmological Cp Violationmentioning

confidence: 99%

Section: Resonant Leptogenesismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Texture zero neutrino models and their connection with resonant leptogenesis

Achelashvili

Tavartkiladze

2018

Nuclear Physics B

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Particular textures of the minimal seesaw model

2021

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The minimal seesaw and leptogenesis models

Zhang

Zhao

2021

Rep. Prog. Phys.

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Given its briefness and predictability, the minimal seesaw—a simplified version of the canonical seesaw mechanism with only two right-handed neutrino fields—has been studied in depth and from many perspectives, and now it is being pushed close to a position of directly facing experimental tests. This article is intended to provide an up-to-date review of various phenomenological aspects of the minimal seesaw and its associated leptogenesis mechanism in neutrino physics and cosmology. Our focus is on possible flavor structures of such benchmark seesaw and leptogenesis scenarios and confronting their predictions with current neutrino oscillation data and cosmological observations. In this connection particular attention will be paid to the topics of lepton number violation, lepton flavor violation, discrete flavor symmetries, CP violation and antimatter of the Universe.

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Calculable cosmological CP violation and resonant leptogenesis

Cited by 6 publications

References 54 publications

Texture zero neutrino models and their connection with resonant leptogenesis

Texture zero neutrino models and their connection with resonant leptogenesis

Particular textures of the minimal seesaw model

The minimal seesaw and leptogenesis models

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