19 citations · 23 across the 21 of their papers we have counts for
21 papers
Zee models with a non-invertible symmetry
Huiji Jin, Takaaki Nomura, Hiroshi Okada
We investigate Zee models by incorporating a non-invertible symmetry. The models are systematically classified based on their symmetry assignments, which dictate structures f…
A theoretical account of tiny multi-Higgs vacuum expectation values from non-invertible symmetry
Takaaki Nomura, Hiroshi Okada
We propose a novel mechanism to explain the naturally small vacuum expectation values (VEVs) of exotic multi-Higgs fields by employing non-invertible symmetries. Specifically, we i…
Predictions of Modular Symmetry Fixed Points on Neutrino Masses, Mixing, and Leptogenesis
Priya, B. C. Chauhan, Deepak Kumar +1
In recently proposed framework of non-holomorphic modular symmetry introduces the concept of negative and zero modular weight of Yukawa couplings. These Yukawa couplings are functi…
A Minimal Realization of Radiative Dirac Neutrino Masses via a Non-Invertible Fusion Rule
Takaaki Nomura, Hiroshi Okada, Yoshihiro Shigekami
We propose a minimal one-loop radiative framework for Dirac neutrino mass matrix. As a consequence, the Yukawa hierarchies among the SM fermions are alleviated, and radiative type-…
Radiative lepton model in a non-invertible fusion rule
Takaaki Nomura, Hiroshi Okada, Yoshihiro Shigekami
We propose a radiatively induced lepton mass model introducing a gauging fusion rule. In our framework, the charged-lepton mass matrix is generated at one-loop level vi…
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…
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…
A new type of lepton seesaw model in a modular symmetry
Takaaki Nomura, Hiroshi Okada
We propose a new type of lepton seesaw model introducing a modular flavor symmetry in which isospin doublet vector fermions play an important role in constructing seesaw mech…
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…
A more novel approach of radiative linear seesaw in a modular symmetry
Takaaki Nomura, Hiroshi Okada
We propose a radiatively induced linear seesaw model that is perfectly realized at leading order by a modular symmetry. Because this group also has a flavor symmetry, we obta…
Non-Holomorphic Modular Symmetric Scotogenic Model
Takaaki Nomura, Hiroshi Okada, Oleg Popov
The present work extends scotogenic and its modular variation a step forward and demonstrates scotogenic modular non-supersymmetric realization. To…
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…
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…
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…
Extended Scotogenic Model of Neutrino Mass and Proton Decay
Takaaki Nomura, Oleg Popov
The current article presents an extension of the classical scotogenic neutrino mass paradigm, where the three issues in particle physics: dark matter, smallness of neutrino mass, a…
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…
Novel moduli space in modular flavor models : a case study for modular seesaw model with hidden gauge symmetry
Keiya Ishiguro, Takaaki Nomura, Hiroshi Okada +2
We study flavor phenomenologies in a basis of a double covering of modular group with a hidden symmetry, in which we work on regions at nearby two fixed points and th…
Modular flavor models with positive modular weights: a new lepton model building
Tatsuo Kobayashi, Takaaki Nomura, Hiroshi Okada +1
We propose an interesting assignment of positive modular wights for fields in a modular non-Abelian discrete flavor symmetry. By this assignment, we can construct inverse seesaw an…
Texture zeros realization in a three-loop radiative neutrino mass model from modular symmetry
Takaaki Nomura, Hiroshi Okada, Hajime Otsuka
We derive verifiable two-zero textures in the framework of a three-loop induced neutrino mass model applying a modular symmetry for the lepton sector. Interestingly, the neut…
Probing chiral and flavored from cosmic bursts through neutrino interactions
ShivaSankar K. A., Arindam Das, Gaetano Lambiase +2
The origin of tiny neutrino mass is an unsolved puzzle leading to a variety of phenomenological aspects beyond the Standard Model (BSM). We consider gauge extension of the S…
Boosting indirect detection of a secluded dark matter sector
Jinmian Li, Takaaki Nomura, Junle Pei +2
Dark Matter (DM) residing in a secluded sector with suppressed portal interaction could evade direct detections and collider searches. The indirect detections provide the most robu…