| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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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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