159 citations · 2k across the 50 of their papers we have counts for
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AMS02 positron excess from decaying fermion DM with local dark gauge symmetry
P. Ko, Yong Tang
Positron excess observed by PAMELA, Fermi and AMS02 may be due to dark matter (DM) pair annihilation or decay dominantly into muons. In this paper, we consider a scenario with ther…
Galactic center -ray excess in hidden sector DM models with dark gauge symmetries: local symmetry as an example
P. Ko, Yong Tang
Hidden sector dark matter (DM) models with local dark gauge symmetry make a natural playground for the -ray excess from the galactic center (GC). In this paper, we first discuss…
Higgs portal vector dark matter for scale -ray excess from galactic center
P. Ko, Wan-Il Park, Yong Tang
We show that the scale -ray excess from the direction of the Galactic Center can be naturally explained by the pair annihilation of Abelian vector dar…
MDM: A Model for Sterile Neutrino and Dark Matter Reconciles Cosmological and Neutrino Oscillation Data after BICEP2
P. Ko, Yong Tang
We propose a ultraviolet complete theory for cold dark matter(CDM) and sterile neutrino that can accommodate both cosmological data and neutrino oscillation experiments at lev…
Self-interacting scalar dark matter with local symmetry
P. Ko, Yong Tang
We construct a self-interacting scalar dark matter (DM) model with local discrete symmetry that stabilizes a weak scale scalar dark matter . The model assumes a hidden s…
Indirect and direct signatures of Higgs portal decaying vector dark matter for positron excess in cosmic rays
Seungwon Baek, P. Ko, Wan-Il Park +1
We investigate the indirect signatures of the Higgs portal vector dark matter (VDM) from both its pair annihilation and decay. The VDM is stable at renormalizable le…