185 citations · 807 across the 14 of their papers we have counts for
14 papers
Renormalization group effects for a rank degenerate Yukawa matrix and the fate of the massless neutrino
Nicholas J. Benoit, Takuya Morozumi, Yusuke Shimizu +2
The Type-I seesaw model is a common extension to the Standard Model that describes neutrino masses. The Type-I seesaw introduces heavy right-handed neutrinos with Majorana mass tha…
violation in modular invariant flavor models
Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +3
We study the spontaneous violation through the stabilization of the modulus in modular invariant flavor models. The -invaraiant potentential has the minimum only at ${…
lepton flavor model and modulus stabilization from modular symmetry
Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +2
We study the modulus stabilization in an model whose flavor symmetry is originated from the modular symmetry. We can stabilize the modulus so that the invar…
flavor symmetric model in SUSY SU(5) GUT
Yu Muramatsu, Hideaki Okane, Yusuke Shimizu +1
We propose a model with flavor symmetry for leptons and quarks in the framework of supersymmetric SU(5) grand unified theory (GUT). The running masses of quarks and charged l…
New lepton flavor model from modular symmetry
Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +2
We study a flavor model with symmetry which originates from modular group. In symmetry, subgroup can be anomalous, and then can be violated to .…
Modular invariant flavor model in SU(5) GUT
Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +2
We present a flavor model with the modular invariance in the framework of SU(5) GUT. The modular forms of weights and give the quark and lepton mass matrices wi…
Sign of CP Violating Phase in Quarks and Leptons
Yusuke Shimizu, Kenta Takagi, Shunya Takahashi +1
We discuss the relation between the CP violation of the quark mixing and that of the lepton mixing by investigating a CP violating observable, the Jarlskog invariant, as well as th…
Finite modular subgroups for fermion mass matrices and baryon/lepton number violation
Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi +3
We study a flavor model that the quark sector has the modular symmetry,while the lepton sector has the modular symmetry. Our model leads to characteristic quark mass ma…
Modular invariance and neutrino mixing
Tatsuo Kobayashi, Naoya Omoto, Yusuke Shimizu +3
We study the phenomenological implications of the modular symmetry of lepton flavors facing recent experimental data of neutrino oscillations. The mass matrices o…
Towards the minimal seesaw model for the prediction of neutrino CP violation
Yusuke Shimizu, Kenta Takagi, Morimitsu Tanimoto
We discuss the minimal seesaw model for the Dirac CP violating phase of the lepton mixing matrix. We introduce two right-handed Majorana neutrinos and obtain several textures of th…
Revisiting model for leptons in light of NuFIT 3.2
Sin Kyu Kang, Yusuke Shimizu, Kenta Takagi +2
We revisit the model for leptons in light of new result of NuFIT 3.2. We introduce a new flavon transforming as singlet or which couples to both charged l…
Neutrino CP violation and sign of baryon asymmetry in the minimal seesaw model
Yusuke Shimizu, Kenta Takagi, Morimitsu Tanimoto
We discuss the correlation between the CP violating Dirac phase of the lepton mixing matrix and the cosmological baryon asymmetry based on the leptogenesis in the minimal seesaw mo…
Towards the minimal seesaw model via CP violation of neutrinos
Yusuke Shimizu, Kenta Takagi, Morimitsu Tanimoto
We study the minimal seesaw model, where two right-handed Majorana neutrinos are introduced, focusing on the CP violating phase. In addition, we take the trimaximal mixing pattern…
Phenomenological Aspects of Possible Vacua of a Neutrino Flavor Model
Takuya Morozumi, Hideaki Okane, Hiroki Sakamoto +3
We discuss a supersymmetric model with discrete flavor symmetry . The additional scalar fields which contribute masses of leptons in the Yukawa terms are introduced…