98 citations · 289 across the 9 of their papers we have counts for
9 papers
Foreground effect on the -factor estimation of ultra-faint dwarf spheroidal galaxies
Koji Ichikawa, Shun-ichi Horigome, Miho N. Ishigaki +4
Dwarf spheroidal galaxies (dSphs) are promising targets for the gamma-ray dark matter (DM) search. In particular, DM annihilation signal is expected to be strong in some of the rec…
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…
Foreground effect on the -factor estimation of classical dwarf spheroidal galaxies
Koji Ichikawa, Miho N. Ishigaki, Shigeki Matsumoto +4
The gamma-ray observation of the dwarf spheroidal galaxies (dSphs) is a promising approach to search for the dark matter annihilation (or decay) signal. The dSphs are the nearby sa…
Dark matter annihilation and decay from non-spherical dark halos in the Galactic dwarf satellites
Kohei Hayashi, Koji Ichikawa, Shigeki Matsumoto +3
The dwarf spheroidal galaxies (dSphs) in the Milky Way are the primary targets in the indirect searches for particle dark matter. To set robust constraints on candidate of dark mat…
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…