11 citations · 44 across the 16 of their papers we have counts for
14 papers · 1 filter
Quark CP-Phase and Froggatt-Nielsen Mechanism
Chuichiro Hattori, Masahisa Matsuda, Mamoru Matsunaga +1
On the basis of the Froggatt-Nielsen mechanism, we study quark flavor mixings in the model. The characteristic structure of the CKM matrix is attributed to t…
Maki-Nakagawa-Sakata matrix and Froggatt-Nielsen mechanism
Chuichiro Hattori, Mamoru Matsunaga, Takeo Matsuoka
Flavor mixings together with fermion mass spectra are studied in detail in the model, in which state-mixings beyond the minimal supersymmetric standard model…
Semidirect product gauge group and quantization of hypercharge
Chuichiro Hattori, Mamoru Matsunaga, Takeo Matsuoka
In the Standard Model the hypercharges of quarks and leptons are not determined by the gauge group alone. We show that, if…
gauge symmetry and Tri-bimaximal mixing
Chuichiro Hattori, Mamoru Matsunaga, Takeo Matsuoka +1
We study an effective gauge theory whose gauge group is a semidirect product with and being a connected Lie group and a finite group, re…
Non-Anomalous Flavor Symmetries and Model
Y. Abe, C. Hattori, T. Hayashi +4
We introduce the flavor symmetry into the string-inspired model. The cyclic group and the dihedral group…
Flavor Symmetry on Non-Commutative Compact Space and Model
Y. Abe, C. Hattori, M. Ito +3
In the four-dimensional effective theory from string compactification discrete flavor symmetries arise from symmetric structure of the compactified space and generally contain both…
Self-Dual Point and Unification
Y. Abe, C. Hattori, M. Ito +2
We hypothesize that the vacuum is spontaneously shifted from the self-dual point in the moduli space, at which all dimensions are compact, and that the true vacuum results from the…
Fermion Masses and Mixings in a String Inspired Model
N. Haba, C. Hattori, M. Matsuda +1
In the context of Calabi-Yau string models we explore the origin of characteristic pattern of quark-lepton masses and the CKM matrix. The discrete -symmetry is…
Quark-Lepton Masses and the Ckm Matrix in a String Inspired Model
Naoyuki Haba, Chuichiro Hattori, Masahisa Matsuda +2
In the context of the Calabi-Yau string model we discuss the origin of characteristic pattern of quark-lepton masses and the CKM matrix. The discrete -symmetry $Z_{2k+1} \times…
The Weak-Scale Hierarchy and Discrete Symmetries
Naoyuki HABA, Chuichiro HATTORI, Masahisa MATSUDA +2
In the underlying Planck scale theory we introduce a certain type of discrete symmetry, which potentially brings the stability of the weak-scale hierarchy under control. Under the…
The Aligned Model
Naoyuki Haba, Chuichiro Hattori, Masahisa Matsuda +2
In Calabi-Yau string compactification, it is pointed out that there exists a new type of model (the aligned model) in which the …
How Can We Obtain a Large Majorana-Mass in Calabi-Yau Models ?
N. Haba, C. Hattori, M. Matsuda +2
In a certain type of Calabi-Yau superstring models it is clarified that the symmetry breaking occurs by stages at two large intermediate energy scales and that two large intermedia…
A Large Majorana-Mass From Calabi-Yau Superstring Models
Naoyuki Haba, Chuichiro Hattori, Masahisa Matsuda +2
In Calabi-Yau superstring models it is found that two large intermediate energy scales of symmetry breaking can be induced for special types of the nonrenormalizable interactions.…
The String Unufication of Gauge Cuoplings and Gauge Kinetic Mixings
Chuichiro Hattori, Masahisa Matsuda, Takeo Matsuoka +1
In the superstring models we have not only the complete {\bf 27} multiplets of but also extra incomplete chiral supermultiplets being alive…