@article{oai:sucra.repo.nii.ac.jp:00013355, author = {実藤, 俊史 and Kohri, Kazunori and 小池, 正史 and 佐藤, 丈 and Shimomura, Takashi and Yamanaka, Masato}, issue = {5}, journal = {PHYSICAL REVIEW D}, month = {}, note = {http://link.aps.org/abstract/PRD/v78/e055007 | http://link.aps.org/abstract/PRD/v78/e055007, A scenario of the big-bang nucleosynthesis is analyzed within the minimal supersymmetric standard model, which is consistent with a stau-neutralino coannihilation scenario to explain the relic abundance of dark matter. We find that we can account for the possible discrepancy of the abundance of Li-7 between the observation and the prediction of the big-bang nucleosynthesis by taking the mass of the neutralino as 300 GeV and the mass difference between the stau and the neutralino as (100-120) MeV. We can therefore simultaneously explain the abundance of the dark matter and that of Li-7 by these values of parameters. The lifetime of staus in this scenario is predicted to be O(100-1000) sec, text, application/pdf}, pages = {055007-1--055007-4}, title = {Big-bang nucleosynthesis and the relic abundance of dark matter in a stau-neutralino coannihilation scenario}, volume = {78}, year = {2008}, yomi = {ジットウ, トシフミ and コイケ, マサフミ and サトウ, ジョウ} }