Type-II seesaw of a non-holomorphic modular A₄ symmetry

2024/08/02 by Takaaki Nomura, Nomura, Takaaki, Hiroshi Okada +1 · 7 citations
Mathematics · Physics and Astronomy · #Advanced Algebra and Geometry #Algebraic structures and combinatorial models #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nonlinear Waves and Solitons

paper · pdf · doi:10.48550/arxiv.2408.01143

openalex publication_date 2024/08/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We search for predictability of lepton masses and mixing patterns of type-II seesaw scenario in a non-holomorphic modular A₄ symmetry recently proposed by Qu and Ding. We propose three types of minimum predictive models with different assignments of modular weight, satisfying the neutrino oscillation data in Nufit 5.2. The cosmological bound on the sum of neutrino mass is stringent to our models and CMB bound ∑ D_ν≤0.12 eV can be satisfied by one of three models playing an important role in discriminating them.

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• Minimal A4 Type-II Seesaw Realization of Testable Neutrino Mass Sum Rules
• A Predictive Non-Holomorphic Modular A₄ Linear Seesaw Framework Testable at DUNE
• Minimal lepton models with non-holomorphic modular A₄ symmetry
• Non-Holomorphic A₄ Modular Symmetry in Type-I Seesaw: Implications for Neutrino Masses and Leptogenesis
• The Seesaw Evaded Modular Dirac Framework
• Neutrino phenomenology and Dark matter in a left-right asymmetric model with non-holomorphic modular A₄ group
• Type-III Seesaw in Non-Holomorphic Modular Symmetry and Leptogenesis

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