Zobrazeno 1 - 10
of 2 757
pro vyhledávání: '"OKADA, Hiroshi"'
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
We study flavor phenomenologies in a basis of a double covering of modular $A_4$ group with a hidden $SU(2)$ symmetry, in which we work on regions at nearby two fixed points and three special points. These special points of $SL(2,\mathbb{Z})$ moduli
Externí odkaz:
http://arxiv.org/abs/2310.17068
Autor:
Jangid, Shilpa, Okada, Hiroshi
Publikováno v:
Phys. Rev. D 109 (2024) 1, 015001
We consider the Type-II seesaw model extended with another Higgs doublet, which is odd under the $Z_2$ symmetry. We look for the possibility of triggering the electroweak symmetry breaking via radiative effects. The Higgs mass parameter changes sign
Externí odkaz:
http://arxiv.org/abs/2310.12591
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 and linear seesaw models without any additional symmetries which possess
Externí odkaz:
http://arxiv.org/abs/2310.10091