3 papers
hep-ph2026
Sommerfeld Enhancement in Spin-1 Electroweak Dark Matter
Tomohiro Abe, Motoko Fujiwara, Junji Hisano
We study a renormalizable spin-1 electroweakly interacting dark matter (DM) model in which the DM particle is the neutral component of a -odd triplet vector…
hep-ph2026
Sommerfeld enhancement from unstable final-state particles in dark matter annihilation
Tomohiro Abe, Ryosuke Sato, Takumu Yamanaka
We study the Sommerfeld enhancement of the annihilation cross section of dark matter into heavier unstable particles. In this process, the annihilation products become non-relativi…
hep-ph2024
Tiny yet detectable WIMP-nucleon scattering cross sections in a pseudo-Nambu-Goldstone dark matter model
Tomohiro Abe, Kota Ichiki
We investigate a pseudo-Nambu-Goldstone (pNG) dark matter (DM) model based on a gauged and a global symmetries. These symmetries are spontaneously broken to a g…