98 citations · 289 across the 9 of their papers we have counts for
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Relation between proton decay and PMNS phase in the minimal SUSY GUT
Takeshi Fukuyama, Koji Ichikawa, Yukihiro Mimura
Proton decay is one of the most important predictions of the grand unified theory (GUT). In the supersymmetric (SUSY) GUT, proton decays via the dimension-five operators need to be…
Heavy Fermion Bound States for Diphoton Excess at 750GeV Collider and Cosmological Constraints
Chengcheng Han, Koji Ichikawa, Shigeki Matsumoto +2
A colored heavy particle with sufficiently small width may form non-relativistic bound states when they are produced at the large hadron collider\,(LHC), and they can annihilate in…
Revisiting fermion mass and mixing fits in the minimal SUSY GUT
Takeshi Fukuyama, Koji Ichikawa, Yukihiro Mimura
Supersymmetric grand unified models with renormalizable Yukawa couplings involving only and Higgs fields have been shown to realize the fer…
Indirect Probe of Electroweak-Interacting Particles at Future Lepton Colliders
Keisuke Harigaya, Koji Ichikawa, Anirban Kundu +2
Various types of electroweak-interacting particles, which have non-trivial charges under the gauge symmetry, appear in various extensions…
Wino Dark Matter and Future dSph Observations
Biplob Bhattacherjee, Masahiro Ibe, Koji Ichikawa +2
We discuss the indirect detection of the wino dark matter utilizing gamma-ray observations of dwarf spheroidal galaxies (dSphs). After carefully reviewing current limits with parti…
High-Scale SUSY Breaking Models in light of the BICEP2 Result
Keisuke Harigaya, Masahiro Ibe, Koji Ichikawa +2
The large value of the tensor-to-scalar ratio in the cosmic microwave background radiation reported by the BICEP2 collaboration gives strong impact on models of supersymmetry (SUSY…