3 papers
hep-ph2025
Aspects of Sommerfeld Enhancement in the light of Halo gamma-ray excess
Yongsoo Jho, Jeonghwan Park, Min Gi Park +1
We examine Sommerfeld enhancement in dark matter annihilation as a potential origin of the halo-like gamma-ray excess near GeV reported by Totani. A minimal model wi…
hep-ph2025
Superheavy Supersymmetric Dark Matter for the origin of KM3NeT Ultra-High Energy signal
Yongsoo Jho, Seong Chan Park, Chang Sub Shin
We propose an explanation for the recently reported ultra-high-energy neutrino signal at KM3NeT, which shows no clear association with known astrophysical sources. While decaying d…
hep-ph2024
Wormhole-Induced ALP Dark Matter
Dhong Yeon Cheong, Koichi Hamaguchi, Yoshiki Kanazawa +3
Non-perturbative gravitational effects induce explicit global symmetry breaking terms within axion models. These exponentially suppressed terms in the potential give a mass contrib…