P. Ko

activity

20242026

collaborators

Showing 2024Show all

3 papers · 1 filter

hep-ph2024

Multi-component dark matter and Galactic 511 keV $γ$ -ray emission

Sarif Khan, Jinsu Kim, Jongkuk Kim +1

We study multi-component dark matter scenarios and the Galactic 511 keV $γ$ -ray emission line signal in the framework of a local, dark $U (1)_{D}$ extension of the Standard Model. A l…

hep-ph2024

Pseudo Nambu-Goldstone Boson DM with Linear Symmetry Breaking: Revisited

Jongkuk Kim, P. Ko

In this work, we revisit pseudo Nambu Goldstone boson (pNGB) DM model where global $U (1)$ dark symmetry is spontaneously broken as well as explicitly with broken by with linear sym…

hep-ph2024

Recent $B^{+} \to K^{+} ν ν ˉ$ excess and muon $g - 2$ illuminating light dark sector with Higgs portal

Shu-Yu Ho, Jongkuk Kim, Pyungwon Ko

The Belle II collaboration recently announced that they observed the $B^{+} \to K^{+} ν ν ˉ$ decay process for the first time. This dineutrino mode of $B^{+} \to K^{+} ν ν ˉ$ has been…

Multi-component dark matter and Galactic 511 keV γ-ray emission

Pseudo Nambu-Goldstone Boson DM with Linear Symmetry Breaking: Revisited

Recent B+→K+ννˉ excess and muon g−2 illuminating light dark sector with Higgs portal

Multi-component dark matter and Galactic 511 keV $γ$ -ray emission

Recent $B^{+} \to K^{+} ν ν ˉ$ excess and muon $g - 2$ illuminating light dark sector with Higgs portal