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.
|ホスト出版物のタイトル||Tours Symposium on Nuclear Physics and Astrophysics - VII|
|出版ステータス||出版済み - 7 20 2010|
|イベント||7th Tours Symposium on Nuclear Physics and Astrophysics - Kobe, 日本|
継続期間: 11 16 2009 → 11 20 2009
|その他||7th Tours Symposium on Nuclear Physics and Astrophysics|
|Period||11/16/09 → 11/20/09|
All Science Journal Classification (ASJC) codes