| DATE: |
2011-05-17 11:00 - 12:00 |
| PLACE: |
Kenkyu Honkan 1F, Meeting Room 1 |
| TITLE: |
Big-bang nucleosynthesis with a long-lived CHAMP including helium-4 spallation process |
| CONTACT: |
Satoshi Shirai, sshirai-AT-post.kek.jp |
| SPEAKER: |
Dr. Masato Yamanaka (KEKˇˇTheory Center) |
| LANGUAGE: |
English |
| URL: |
http://research.kek.jp/group/www-theory/schedule.html |
| ABSTRACT: |
Long-lived charged massive particle (CHAMP) plays a role as catalyzer of exotic nuclear reactions in the Big-bang nucleosynthesis era. I discuss the primordial abundances of light elements involving the helium-4 spallation processes, the catalyzed fusion processes, and the internal conversion processes. Furthermore, I show the cosmologically favored parameter space in the minimal supersymmetric standard model with long-lived stau via solving the Lithium-7 problem. |
