10 papers
Lepton seesaw model in a modular symmetry
Takaaki Nomura, Hiroshi Okada
We propose a lepton seesaw model to get the same mass-origin of charged-leptons and neutrinos introducing a modular symmetry. In this scenario, the mass matrix of charged-lep…
Quasi two-zero texture in Type-II seesaw at fixed points from modular symmetry
Takaaki Nomura, Hiroshi Okada
We study a quasi two-zero neutrino texture based on a type-II seesaw model with modular symmetry to evade the cosmological bound on the sum of neutrino masses while keeping s…
Radiative inverse seesaw model with hidden gauge symmetry enhancing lepton
Takaaki Nomura, Hiroshi Okada
We propose a new inverse seesaw model based on hidden local symmetry framework where inverse seesaw mechanism is induced at one loop level. A Majorana mass term of singlet f…
Neutrino Masses and Mixing in an Axion Model
Sin Kyu Kang, Hiroshi Okada
We propose a novel framework that simultaneously addresses three critical issues: tiny neutrino masses and their mixing patterns, dark matter, and the strong CP problem. Our model…
Zee model in a non-holomorphic modular symmetry
Takaaki Nomura, Hiroshi Okada
We study a Zee model in a non-holomorphic modular flavor symmetry in which we find good predictions in both the cases of normal and inverted hierarchy. Parameter reduction on…
Type-II seesaw of a non-holomorphic modular symmetry
Takaaki Nomura, Hiroshi Okada
We search for predictability of lepton masses and mixing patterns of type-II seesaw scenario in a non-holomorphic modular symmetry recently proposed by Qu and Ding. We propos…