Zobrazeno 1 - 10
of 2 806
pro vyhledávání: '"Okada, hiroshi"'
Autor:
Nomura, Takaaki, Okada, Hiroshi
We study a Zee model in a non-holomorphic modular $A_4$ flavor symmetry in which we find good predictions in both the cases of normal and inverted hierarchy. Parameter reduction on neutrino sector occurs due to large mass hierarchies between charged-
Externí odkaz:
http://arxiv.org/abs/2412.18095
Autor:
Nomura, Takaaki, Okada, Hiroshi
We propose a radiatively induced linear seesaw model that is perfectly realized at leading order by a modular $A_4$ symmetry. Because this group also has a flavor symmetry, we obtain some predictions concentrating on two specific regions at nearby fi
Externí odkaz:
http://arxiv.org/abs/2410.21843
The present work extends scotogenic and its modular $\mathcal{A}_4$ variation a step forward and demonstrates scotogenic modular $\mathcal{A}_4$ non-supersymmetric realization. To achieve this non-holomorphic modular symmetries come to rescue. Advant
Externí odkaz:
http://arxiv.org/abs/2409.12547
Autor:
Nomura, Takaaki, Okada, Hiroshi
We propose a lepton seesaw model to get the same mass-origin of charged-leptons and neutrinos introducing a modular $A_4$ symmetry. In this scenario, the mass matrix of charged-leptons is induced via seesaw-like mechanism while the mass matrix of neu
Externí odkaz:
http://arxiv.org/abs/2409.10912
Autor:
Kang, Sin Kyu, Okada, Hiroshi
We propose a novel framework that addresses three critical issues: tiny neutrino masses and mixing, dark matter, and the strong CP problem. Our model extends the Peccei-Quinn (PQ) symmetry by incorporating modular $S_3$ symmetry to specifically addre
Externí odkaz:
http://arxiv.org/abs/2408.14942
Autor:
Nomura, Takaaki, Okada, Hiroshi
We search for predictability of lepton masses and mixing patterns of type-II seesaw scenario in a non-holomorphic modular $A_4$ symmetry recently proposed by "Qu" and "Ding". We propose three types of minimum predictive models with different assignme
Externí odkaz:
http://arxiv.org/abs/2408.01143
Autor:
Nomura, Takaaki, Okada, Hiroshi
We study a quasi two-zero neutrino texture based on type-II seesaw model in a modular $A_4$ symmetry to evade the cosmological bound on the sum of neutrino mass while keeping some predictability in neutrino sector. Working on three fixed points for m
Externí odkaz:
http://arxiv.org/abs/2407.13167
Autor:
Nomura, Takaaki, Okada, Hiroshi
We propose a new inverse seesaw model based on hidden local $U(1)$ symmetry framework where inverse seesaw mechanism is induced at one loop level. A Majorana mass term of singlet fermion is forbidden by the $U(1)$ symmetry and it is generated at one-
Externí odkaz:
http://arxiv.org/abs/2403.14193
We study a one-loop induced neutrino mass model with an inert isospin triplet scalar field of $Y=0$ and heavier isospin doublet vector-like leptons and singlet Majorana right-handed fermions. In addition to the neutrino mass matrix, We explain sizabl
Externí odkaz:
http://arxiv.org/abs/2311.08901