Login

Code of online KIAS HEP seminars via Zoom

  • Register full name in Latin alphabets
  • Unmute microphone and ask questions or make comments anytime
  • Keep microphone muted otherwise (to reduce noise)
  • Turn on webcam if possible when you speak
KIAS HEP seminars

Sommerfeld Effect and Unitarity

by Dr Ryosuke Sato (University of Osaka)

→ Asia/Seoul
Zoom

Zoom

Join Zoom Meeting https://us06web.zoom.us/j/5268028470?pwd=ckFZaVJFMXBGczVOZDJFUGRGSnloQT09 Meeting ID: 526 802 8470 Passcode: 012345
Description

Title: Sommerfeld Effect and Unitarity

Speaker: Ryosuke Sato (University of Osaka)

Abstract: 

The annihilation cross section of dark matter has an important role in dark matter phenomenology. If dark matter couples to a light force mediator, the exchange of the mediator non-perturbatively distorts the wave function of the dark matter from the plane wave. This effect significantly modifies the annihilation cross section. This effect is called Sommerfeld effect. In this talk, I will talk about how the annihilation cross section with Sommerfeld effect is calculated from the Schroedinger equation. Our method is consistent with the partial wave unitarity bound and it can be applied to s-wave and higher-l waves.

 

Zoom Coordinates:

https://us06web.zoom.us/j/5268028470?pwd=ckFZaVJFMXBGczVOZDJFUGRGSnloQT09

Meeting ID: 526 802 8470
Passcode: 012345

Powered by Indico v3.3.5