2nd Topics of Particle, Astro and Cosmo Frontiers (TOPAC 2024)

Session

DM

1 Jun 2024, 13:30

206 Southeast Col. (东南院206)

Conveners

DM

• Yue-Lin Sming Tsai (Purple Mountain Observatory)

21. Quantum Theory of Dark Matter Scattering

Takumi Kuwahara (Peking U)

01/06/2024, 13:30

Dark matter self-scattering is one of key ingredients for small-scale structure of the Universe, while dark matter annihilation is important for the indirect measurements. There is a strong correlation between the velocity-dependent self-scattering cross section and the Sommerfeld enhancement factor for the dark matter annihilation cross section. In this study, we formulate a direct relation...

15. Freeze-in Dark Matter Explanation of the Galactic 511~keV Signal

Wan-Zhe Feng (Tianjin University)

01/06/2024, 13:55

Oral talk

We demonstrate, for the first time, the freeze-in dark matter, constituting 100% of the relic density can completely explain the Galactic 511 keV photon signal. In the talk, I will present two simple models for illustration. In both scenarios, the freeze-in mechanism generates the entire dark matter relic density, and thus any types of additional dark matter components produced from other...

34. Probe Strongly Coupled Dark Sector via Gravitational Wave

Zhi-Wei Wang (UESTC)

01/06/2024, 14:20

We go beyond the state-of-the-art by combining first principal lattice results and effective field theory approaches as Polyakov Loop model to explore the non-perturbative dark deconfinement-confinement phase transition and the generation of gravitational-waves in a dark Yang-Mills theory. We further include fermions with different representations in the dark sector. Employing the...

77. Detecting a Fifth-Force Gauge Boson via Superconducting Josephson Junctions

Yu Cheng

01/06/2024, 14:45