2010 Fiscal Year Final Research Report
Catalyzed nuclear reactions by stau atomic collisions in big-bang nucleosynthesis
| Project/Area Number |
20540385
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | Tohoku University |
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Principal Investigator |
KINO Yasushi 東北大学, 大学院・理学研究科, 准教授 (00272005)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 原子衝突 / エキゾチック原子分子 / ビッグバン元素合成 |
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| Research Abstract |
A supersymmetric particle stau is heavier than an iron atom, and its lifetime is considered to be more than 1, 000 s. From a viewpoint of atomic physics, negatively charged stau behaves like a heavy electron and forms stau atomic and molecular systems. We, for the first time, calculate the nuclear reactions during the stau atomic collision in a full qantal manner. The results show that the nuclear reactions induced by the stau atomic collision can solve the lithium-6 and lithium-7 problems which are most crucial problem in the big-bang nucleosymthesis. We also investigated other nuclear reactions induced by the stau atomic collisions and predicted properties of undiscovered particle stau.
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