标题： 大爆炸核合成通过NMSSM中长寿命的slepton的束缚态效应 显示英文标题

标题： Big-bang nucleosynthesis through bound-state effects with a long-lived slepton in the NMSSM

摘要： 我们证明，在下最小超对称标准模型中可以解决Li问题，其中slepton作为次轻的SUSY粒子具有非常长的寿命。 这种长寿命的slepton在大爆炸核合成中会引起奇特的核反应，并通过结合态形成破坏和产生$^7$Li 和$^6$Li 核。 我们研究了最轻的SUSY粒子是单态中性微子和双态中性微子的情况，以呈现与暗物质和希格斯质量观测一致的参数空间允许区域。 显示英文摘要

摘要： We show that the Li problems can be solved in the next-to-minimal supersymmetric standard model where the slepton as the next-to-lightest SUSY particle is very long-lived. Such a long-lived slepton induces exotic nuclear reactions in big-bang nucleosynthesis, and destroys and produces the $^7$Li and $^6$Li nuclei via bound state formation. We study cases where the lightest SUSY particle is singlino-like neutralino and bino-like neutralino to present allowed regions in the parameter space which is consistent with the observations on the dark matter and the Higgs mass.