782 citations · 8.5k across the 161 of their papers we have counts for
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Dark matter asymmetry in supersymmetric Dirac leptogenesis
Ki-Young Choi, Eung Jin Chun, Chang Sub Shin
We discuss asymmetric or symmetric dark matter candidate in the supersymmetric Dirac leptogenesis scenario. By introducing a singlet superfield coupling to right-handed neutrinos,…
Cosmological moduli problem in large volume scenario and thermal inflation
Kiwoon Choi, Wan-Il Park, Chang Sub Shin
We show that in a large volume scenario of type IIB string or F-theory compactifications, single thermal inflation provides only a partial solution to the cosmological problem of t…
Higgs mixing and diphoton rate enhancement in NMSSM models
Kiwoon Choi, Sang Hui Im, Kwang Sik Jeong +1
We study the implications of the LHC Higgs signals on the Higgs mixing in the next-to-minimal supersymmetric standard model (NMSSM). The Higgs couplings can depart from their value…
Can Standard Model Higgs Seed the Formation of Structures in Our Universe?
Ki-Young Choi, Qing-Guo Huang
We study the Standard Model Higgs field as a source for the primordial curvature perturbation, particularly in the curvaton and modulated reheating scenario. We conclude that the H…
Peccei-Quinn NMSSM in the light of 125 GeV Higgs
Kyu Jung Bae, Kiwoon Choi, Eung Jin Chun +3
We study the phenomenology of the Peccei-Quinn invariant extension of the next-to-minimal supersymmetric standard model (NMSSM) in view of the recent discovery of a 125 GeV Higgs b…
Dark radiation and small-scale structure problems with decaying particles
Kiwoon Choi, Ki-Young Choi, Chang Sub Shin
Although the standard ΛCDM model describes the cosmic microwave background radiation and the large scale structure of the Universe with great success, it has some tensions with obs…