Tatsuru Kikuchi
Ritsumeikan University
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Featured researches published by Tatsuru Kikuchi.
European Physical Journal C | 2005
Takeshi Fukuyama; Amon Ilakovac; Tatsuru Kikuchi; Stjepan Meljanac; Nobuchika Okada
Abstract.We give an explicit formula for the proton decay rate in the minimal renormalizable supersymmetric (SUSY) SO(10) model. In this model, the Higgs fields consist of the 10 and
Journal of Mathematical Physics | 2005
Takeshi Fukuyama; Amon Ilakovac; Tatsuru Kikuchi; Stjepan Meljanac; Nobuchika Okada
\mathbf{\overline{126}}
Physical Review D | 2003
Takeshi Fukuyama; Tatsuru Kikuchi; Nobuchika Okada
SO(10) representations in the Yukawa interactions with matter and of the 10,
Physics Letters B | 2008
Tatsuru Kikuchi; Nobuchika Okada
\mathbf{\overline{126}}
Physical Review D | 2002
Yoshio Koide; Hiroyuki Nishiura; Koichi Matsuda; Tatsuru Kikuchi; Takeshi Fukuyama
, 126, and 210 representations in the Higgs potential. We present all the mass matrices for the Higgs fields contained in this minimal SUSY SO(10) model. Finally, we discuss the threshold effects of these Higgs fields on the gauge coupling unification.
Journal of High Energy Physics | 2004
Takeshi Fukuyama; Amon Ilakovac; Tatsuru Kikuchi; Stjepan Meljanac; Nobuchika Okada
The complete tables of Clebsch–Gordan (CG) coefficients for a wide class of SO(10) SUSY grand unified theories (GUTs) are given. Explicit expressions of states of all corresponding multiplets under standard model gauge group G321=SU(3)C×SU(2)L×U(1)Y, necessary for evaluation of the CG coefficients are presented. The SUSY SO(10) GUT model considered here includes most of the Higgs irreducible representations usually used in the literature, 10, 45, 54, 120, 126, 126¯, and 210. Mass matrices of all G321 multiplets are found for the most general superpotential. These results are indispensable for the precision calculations of the gauge couplings unification and proton decay, etc.
Physics Letters B | 2008
Tatsuru Kikuchi; Nobuchika Okada
In the recently proposed minimal supersymmetric SO(10) model, the neutrino Dirac Yukawa coupling matrix, together with all the other fermion mass matrices, is completely determined once free parameters in the model are appropriately fixed so as to accommodate the recent neutrino oscillation data. Using these unambiguous neutrino Dirac Yukawa couplings, we calculate the lepton flavor violating (LFV) processes and the muon
Physical Review D | 2005
Takeshi Fukuyama; Amon Ilakovac; Tatsuru Kikuchi; Stjepan Meljanac; Nobuchika Okada
g\ensuremath{-}2
Physical Review D | 2008
Tatsuru Kikuchi; Nobuchika Okada; Michihisa Takeuchi
assuming the minimal supergravity scenario. The resultant rates of the LFV processes are found to be large enough to well exceed the proposed future experimental bound, while the magnitude of the muon
Physical Review D | 2002
Hiroyuki Nishiura; Koichi Matsuda; Tatsuru Kikuchi; Takeshi Fukuyama
g\ensuremath{-}2