Search Results - "Kobayashi, Tatsuo"

Landscape of modular symmetric flavor models by Ishiguro, Keiya, Kobayashi, Tatsuo, Otsuka, Hajime

“…A bstract We study the moduli stabilization from the viewpoint of modular flavor symmetries. We systematically analyze stabilized moduli values in possible…”
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Symplectic modular symmetry in heterotic string vacua: flavor, CP, and R-symmetries by Ishiguro, Keiya, Kobayashi, Tatsuo, Otsuka, Hajime

“…A bstract We examine a common origin of four-dimensional flavor, CP, and U(1) R symmetries in the context of heterotic string theory with standard embedding…”
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On stringy origin of minimal flavor violation by Kobayashi, Tatsuo, Otsuka, Hajime

“…We study the minimal flavor violation in the context of string effective field theory. Stringy selection rules indicate that n -point couplings among fermionic…”
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Finite modular subgroups for fermion mass matrices and baryon/lepton number violation by Kobayashi, Tatsuo, Shimizu, Yusuke, Takagi, Kenta, Tanimoto, Morimitsu, Tatsuishi, Takuya H., Uchida, Hikaru

“…We study a flavor model that the quark sector has the S3 modular symmetry while the lepton sector has the A4 modular symmetry. Our model leads to…”
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Spontaneous CP violation and symplectic modular symmetry in Calabi-Yau compactifications by Ishiguro, Keiya, Kobayashi, Tatsuo, Otsuka, Hajime

“…We explore the geometrical origin of CP and the spontaneous CP violation in Calabi-Yau compactifications. We find that the CP symmetry is identified with an…”
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New A 4 lepton flavor model from S 4 modular symmetry by Tatsuo Kobayashi, Yusuke Shimizu, Kenta Takagi, Morimitsu Tanimoto, Takuya H. Tatsuishi

“…Abstract We study a flavor model with A 4 symmetry which originates from S 4 modular group. In S 4 symmetry, Z 2 subgroup can be anomalous, and then S 4 can be…”
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Quark and lepton hierarchies from S4′ modular flavor symmetry by Abe, Yoshihiko, Higaki, Tetsutaro, Kawamura, Junichiro, Kobayashi, Tatsuo

“…We propose models in which the hierarchical structures of the masses and mixing in both quark and lepton sectors are explained by the S4′ modular flavor…”
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Common origin of the strong CP and CKM phases in string compactifications by Kobayashi, Tatsuo, Otsuka, Hajime

“…We explore the scenario where both the strong CP and Cabbibo-Kobayashi-Maskawa (CKM) phases are determined by the same axion field. Such a scenario is…”
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CP-violating phase on magnetized toroidal orbifolds by Kobayashi, Tatsuo, Nishiwaki, Kenji, Tatsuta, Yoshiyuki

“…A bstract We study the CP-violating phase of the quark sector on T 2 /Z N ( N = 2 , 3 , 4 , 6) with non-vanishing magnetic fluxes, where properties of possible…”
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Soft supersymmetry breaking terms and lepton flavor violations in modular flavor models by Kobayashi, Tatsuo, Shimomura, Takashi, Tanimoto, Morimitsu

“…We study the soft supersymmetry (SUSY) breaking terms due to the modulus F-term in the modular flavor models of leptons. It is found that the soft SUSY…”
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Modular A4 invariance and neutrino mixing by Kobayashi, Tatsuo, Omoto, Naoya, Shimizu, Yusuke, Takagi, Kenta, Tanimoto, Morimitsu, Tatsuishi, Takuya H.

“…A bstract We study the phenomenological implications of the modular symmetry Γ(3) ≃ A 4 of lepton flavors facing recent experimental data of neutrino…”
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Lepton flavor violation, lepton (g − 2)μ, e and electron EDM in the modular symmetry by Kobayashi, Tatsuo, Otsuka, Hajime, Tanimoto, Morimitsu, Yamamoto, Kei

“…A bstract We study the lepton flavor violation (LFV), the leptonic magnetic moments ( g − 2) μ, e and the electric dipole moment (EDM) of the electron in the…”
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Hierarchical structure of physical Yukawa couplings from matter field Kähler metric by Ishiguro, Keiya, Kobayashi, Tatsuo, Otsuka, Hajime

“…A bstract We study the impacts of matter field Kähler metric on physical Yukawa couplings in string compactifications. Since the Kähler metric is non-trivial…”
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Modular flavor models with positive modular weights: a new lepton model building by Kobayashi, Tatsuo, Nomura, Takaaki, Okada, Hiroshi, Otsuka, Hajime

“…A bstract We propose an interesting assignment of positive modular weights for fields in a modular non-Abelian discrete flavor symmetry. By this assignment, we…”
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Flux Landscape with enhanced symmetry not on SL(2, ℤ) elliptic points by Ishiguro, Keiya, Kai, Takafumi, Kobayashi, Tatsuo, Otsuka, Hajime

“…A bstract We study structures of solutions for SUSY Minkowski F-term equations on two toroidal orientifolds with h 2 , 1 = 1. Following our previous study [ 1…”
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Moduli trapping mechanism in modular flavor symmetric models by Kikuchi, Shota, Kobayashi, Tatsuo, Nasu, Kaito, Yamada, Yusuke

“…A bstract We discuss how the moduli in modular flavor symmetric models dynamically select enhanced symmetry points at which the residual modular symmetry…”
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Finite modular axion and radiative moduli stabilization by Higaki, Tetsutaro, Kawamura, Junichiro, Kobayashi, Tatsuo

“…A bstract We propose a simple setup which can stabilize a modulus field of the finite modular symmetry by the Coleman-Weinberg potential. Our scenario leads to…”
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Modular forms and hierarchical Yukawa couplings in heterotic Calabi-Yau compactifications by Ishiguro, Keiya, Kobayashi, Tatsuo, Nishimura, Satsuki, Otsuka, Hajime

“…A bstract We study the modular symmetry in heterotic string theory on Calabi-Yau threefolds. In particular, we examine whether moduli-dependent holomorphic…”
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Spontaneous CP violation and partially broken modular flavor symmetries by Higaki, Tetsutaro, Kobayashi, Tatsuo, Nasu, Kaito, Otsuka, Hajime

“…A bstract We study the realization of spontaneous CP violation through moduli stabilization. In modular flavor models, the source of CP violation is the vacuum…”
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Moduli inflation from modular flavor symmetries by Abe, Yoshihiko, Higaki, Tetsutaro, Kaneko, Fumiya, Kobayashi, Tatsuo, Otsuka, Hajime

“…A bstract We study slow-roll inflation model controlled by the modular flavor symmetry. In the model, the modulus field plays a role of inflaton and the…”
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