43 citations · 80 across the 12 of their papers we have counts for
13 papers
Self-resonant dark matter with gauged symmetry
Lucca Radicce Justino, Seong-Sik Kim, Hyun Min Lee +1
We present a new model for two-component scalar dark matter (DM), consisting of two complex scalar fields. In this model, both the DM components are stable due to the remaining $Z_…
Neutrino masses and mixed dark matter from doublet and singlet scalars
Jongkuk Kim, Seong-Sik Kim, Hyun Min Lee +1
We consider the extension of the Standard Model with an inert scalar doublet, three right-handed neutrinos, and singlet scalar fields, and . In this model, neutrino masses a…
Small Neutrino Masses from a Decoupled Singlet Scalar Field
Jongkuk Kim, Seong-Sik Kim, Hyun Min Lee +1
We propose a unified solution with discrete symmetry for small neutrino masses and stability of dark matter. The Standard Model is extended with an inert doublet scalar, a da…
Muon and Proton Lifetime in SUSY SU(5) GUTs with Split Superpartners
Seong-Sik Kim, Hyun Min Lee, Sung-Bo Sim
We consider the interplay of the muon anomaly and the proton decay in the SUSY SU(5) GUTs with generation-independent scalar soft masses. In these scenarios, we introduce a n…
Positivity Bounds on Higgs-Portal Freeze-in Dark Matter
Seong-Sik Kim, Hyun Min Lee, Kimiko Yamashita
We consider the relic density and positivity bounds for freeze-in scalar dark matter with general Higgs-portal interactions up to dimension-8 operators. When dimension-4 and dimens…
Self-resonant Dark Matter
Hyun Min Lee
We present a review on the self-resonant dark matter scenarios where multiple components of dark matter give rise to a resonant condition in the -channel diagrams for their comp…
Positivity Bounds on Higgs-Portal Dark Matter
Seong-Sik Kim, Hyun Min Lee, Kimiko Yamashita
We consider the positivity bounds for WIMP scalar dark matter with effective Higgs-portal couplings up to dimension-8 operators. Taking the superposed states for Standard Model Hig…
The lepton portals for muon , boson mass and dark matter
Seong-Sik Kim, Hyun Min Lee, Adriana G. Menkara +1
We propose a novel model which extends the Standard Model (SM) by introducing a gauge symmetry. In this model, a dark Higgs doublet and a Higgs bi-doublet can c…
The lepton portals for muon , boson mass and dark matter
Seong-Sik Kim, Hyun Min Lee, Adriana G. Menkara +1
We propose a novel model for lepton flavor and dark matter based on the gauge symmetry and vector-like leptons in its fundamental representations. We introduce a dark $SU…
Models for Self-resonant Dark Matter
Seong-Sik Kim, Hyun Min Lee, Bin Zhu
We consider a new mechanism for enhancing the self-scattering and annihilation cross sections for dark matter with multiple components but without a light mediator. The lighter dar…
Self-resonant Dark Matter
Seong-Sik Kim, Hyun Min Lee, Bin Zhu
We present a novel mechanism for Sommerfeld enhancement for dark matter interactions without the need for light mediators. Considering a model for two-component dark matter with a…
Thermal inflation, baryogenesis and axions
Seongcheol Kim, Wan-Il Park, Ewan D. Stewart
In a previous paper, we proposed a simple extension of the Minimal Supersymmetric Standard Model which gives rise to thermal inflation and baryogenesis in a natural and remarkably…
Dark energy in hybrid inflation
Jinn-Ouk Gong, Seongcheol Kim
The situation that a scalar field provides the source of the accelerated expansion of the universe while rolling down its potential is common in both the simple models of the primo…