Stau-catalyzed big-bang nucleosynthesis reactions

Masayasu Kamimura, Yasushi Kino, Emiko Hiyama

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

6 被引用数 (Scopus)

抄録

We study the new type of big-bang nucleosynthesis (BBN) reactions that are catalyzed by a hypothetical long-lived negatively charged, massive leptonic particle (called X-) such as the supersymmetric(SUSY) particle stau, the scalar partner of the tau lepton. It is known that if the X- particle has a lifetime of τX ≳ 103 s, it can capture a light element previously synthesized in standard BBN and form a Coulombic bound state and induces various types of reactions in which X - acts as a catalyst. Some of these X- -catalyzed reactions have significantly large cross sections so that the inclusion of there actions into the BBN network calculation can markedly change the abundances of some elements. We use a high-accuracy three-body calculation method developed by the authors and provide precise cross sections and rates of these catalyzed BBN reactions for use in the BBN network calculation.

本文言語英語
ホスト出版物のタイトルTours Symposium on Nuclear Physics and Astrophysics - VII
ページ139-144
ページ数6
1238
DOI
出版ステータス出版済み - 7 20 2010
外部発表はい
イベント7th Tours Symposium on Nuclear Physics and Astrophysics - Kobe, 日本
継続期間: 11 16 200911 20 2009

その他

その他7th Tours Symposium on Nuclear Physics and Astrophysics
国/地域日本
CityKobe
Period11/16/0911/20/09

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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