Nuclear reactions induced by stau atomic collisions in big-bang nucleosynthesis

Yasushi Kino, Masayasu Kamimura, Emiko Hiyama

Research output: Contribution to journalConference articlepeer-review


Calculations of low energy atomic collision are performed for the new types of big-bang nucleosynthesis (BBN) reactions that are enhanced by a supersymmetric (SUSY) particle stau, a scalar partner of the tau lepton. If a stau has a lifetime > 103 s, it would capture a light element previously synthesized in standard BBN and form a Coulombic bound state. The bound state, an exotic atom, is expected to induce various nuclear reactions as in the muon catalyzed fusion. A negatively charged stau works as a catalyzer. We use a few-body calculational method developed by the authors, and provide precise cross sections and rates of the stau-catalyzed BBN reactions for the BBN network calculation.

Original languageEnglish
Article number072019
JournalJournal of Physics: Conference Series
Issue number7
Publication statusPublished - 2009 Dec 24
Event26th International Conference on Photonic, Electronic and Atomic Collisions - Kalamazoo, United States
Duration: 2009 Jul 222009 Jul 28


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