collaborators

8 papers

hep-ph2026

Radiative Dirac Neutrino Masses from Modular Symmetry in an Axion Model

Sin Kyu Kang, Ranjeet Kumar, Hiroshi Okada

We present a unified axion model framework that simultaneously addresses the origin of neutrino masses, leptonic flavor structure, the strong CP problem, and dark matter. The model…

hep-ph2025

A radiative lepton model in a non-invertible fusion rule

Jingqian Chen, Chao-Qiang Geng, Hiroshi Okada +1

We propose a new mechanism in which electron and muon masses are induced at one-loop level after dynamically violating the symmetry of the Ising fusion rule. In the neutrino sector…

hep-ph2025

Radiative lepton seesaw model in a non-invertible fusion rule and gauged symmetry

Takaaki Nomura, Hiroshi Okada

We propose a radiative lepton seesaw model with the Tambara-Yamagami fusion rule and gauged symmetry. The heavier right-handed neutral fermions () simult…

hep-ph2025

Neutrino mass model at a three-loop level from a non-holomorphic modular symmetry

Takaaki Nomura, Hiroshi Okada

We study a three-loop induced neutrino mass scenario from a non-holomorphic modular flavor symmetry and reach the minimum scenario leading predictions of the lepton masses, m…

hep-ph2025

A radiative neutrino mass model with leptoquarks under non-holomorphic modular symmetry

Takaaki Nomura, Hiroshi Okada, Xing-Yu Wang

We investigate a radiative seesaw model with two leptoquarks under non-holomorphic modular symmetry. The leptons and quarks belong to non-trivial representations of the modul…

hep-ph2025

Radiative neutrino mass models from non-invertible selection rules

Tatsuo Kobayashi, Hiroshi Okada, Hajime Otsuka

We apply non-invertible selection rules coming from a fusion algebra to radiative neutrino mass models where fields are labeled by the elements in the algebra. Since non-invertible…