Seminar:- Ultraheavy Atomic Dark Matter Freeze-Out through Rearrangement
Atomic dark matter is usually considered to be produced asymmetrically in the early Universe. In this work, the speaker and his team first propose that the symmetric atomic dark matter can be thermally produced through the freeze-out mechanism. The dominant atom anti-atom annihilation channel is the atomic rearrangement. It has a geometrical cross section much larger than that of elementary fermions. After the atomic formation, this annihilation process further depletes dark matter particles and finally freezes out. To give the observed dark matter relic, the dark atoms are naturally ultraheavy, ranging from 10⁶ to 10¹⁰ GeV.
時間：2023.03.14(四) 15:00
地點：香港城市大學 楊建文學術樓* Y5-302
講者：Dr. QIU Yu-Cheng 邱渔骋 博士 (博士后研究员；中国上海 李政道研究所**)
語言：英語
【此屬轉載信息，以主事單位發布為準】
*Yeung Kin Man Academic Building
**Postdoc, Tsung-Dao Lee Institute
此活動由香港城巿大學物理系主辦。
