A Further Study of the Frampton-Glashow-Yanagida Model for Neutrino Masses, Flavor Mixing and Baryon Number Asymmetry

Abstract

In light of the latest neutrino oscillation data, we revisit the minimal scenario of type-I seesaw model, in which only two heavy right-handed Majorana neutrinos are introduced to account for both tiny neutrino masses and the baryon number asymmetry in our Universe. In this framework, we carry out a systematic study of the Frampton-Glashow-Yanagida ansatz by taking into account the renormalization-group running of neutrino mixing parameters and the flavor effects in leptogenesis. We demonstrate that the normal neutrino mass ordering is disfavored even in the minimal supersymmetric standard model with a large value of $\tan \beta$, for which the running effects could be significant. Furthermore, it is pointed out that the original scenario with a hierarchical mass spectrum of heavy Majorana neutrinos contradicts with the upper bound derived from a naturalness criterion, and the resonant mechanism with nearly-degenerate heavy Majorana neutrinos can be a possible way out.

24 pages, 4 figures, 2 tables, more discussions added, to appear in JHEP

References in corpus (7)

• Observation of electron-antineutrino disappearance at Daya Bay
• Updated fit to three neutrino mixing: status of leptonic CP violation
• Updated Values of Running Quark and Lepton Masses
• Improved Measurement of Electron Antineutrino Disappearance at Daya Bay
• Systematic uncertainties in long-baseline neutrino oscillations for large ${\theta }_{13}$
• Electroweak naturalness in three-flavour Type I see-saw and implications for leptogenesis
• Geometry of the effective Majorana neutrino mass in the neutrinoless double-beta decay

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• Implications of residual CP symmetry for leptogenesis in a model with two right-handed neutrinos
• Bridging resonant leptogenesis and low-energy CP violation with an RGE-modified seesaw relation
• Renormalisation Group Corrections to the Littlest Seesaw Model and Maximal Atmospheric Mixing
• A Comprehensive Renormalisation Group Analysis of the Littlest Seesaw Model
• Confronting Four Zero Neutrino Yukawa Textures with $N_2^{}$-dominated Leptogenesis
• Minimal Seesaw Model with a Discrete Heavy-Neutrino Exchange Symmetry
• Completing constrained flavor violation: lepton masses, neutrinos and leptogenesis