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The minimal seesaw and leptogenesis models
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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.
Forward citations
Cited by 5 Pith papers
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Lepton mixing from the $\Delta(96)$ Modular Littlest Seesaw
An exhaustive scan of Δ(96) Modular Littlest Seesaw models yields 35 viable residual-symmetry patterns with new fixed PMNS columns and sharp, testable predictions beyond TM1.
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Electroweak Triplet Scalar Contribution to $SO(10)$ Leptogenesis
In a minimal SO(10) model with type-I seesaw dominance, decays of the electroweak triplet scalar can dominate baryogenesis and make leptogenesis viable.
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Confronting the seesaw mechanism with neutrino oscillations: a general and explicit analytical bridge
The paper provides, for the first time, explicit analytical expressions for the two mass-squared differences, three mixing angles, and effective Dirac CP phase of the canonical seesaw mechanism in terms of its 18 para...
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Electroweak right-handed neutrino portal dark matter
In neutrino-portal dark matter, ignoring internal dark-sector interactions during freeze-in can underestimate the final relic abundance by 30–95%.
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Testing the RG Running of the Leptonic Dirac CP Phase with Reactor Neutrinos
The JUNO-TAO reactor experiment could constrain the renormalization-group running beta function of the Dirac CP phase to about βδ ≈ 0.1, if spectrum-shape systematics are controlled.
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