Big-bang nucleosynthesis with long-lived charged slepton

Big-bang nucleosynthesis with long-lived charged slepton
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DOI:
10.1016/j.physletb.2007.03.063
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发表时间:
2007-06-14
期刊:
影响因子:
4.4
通讯作者:
Moroi, Takeo
Moroi, Takeo
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Kawasaki, Masahiro;Kohri, Kazunori;Moroi, Takeo

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我们考虑超对称模型中长寿命带电标量轻子 (l) 超过棒 (+/-) 的约束,其中引力子是最轻的超粒子。我们研究了 (l) 在波形符 (+/-) 上的衰变和强子化过程。我们还考虑到由于束缚态的形成(He-4 (l) 超过波形符 (-)),L-6 产量显着增强;为此,我们使用基于耦合通道方法的最新计算给出的反应速率。 (c) 2007 Elsevier B.V. 保留所有权利。
We consider constraints on long-lived charged scalar leptons (l) over bar (+/-) in supersymmetric models, where gravitino is the lightest superparticle. We study the decay and hadronization processes of (l) over tilde (+/-). We also take into account the significant enhancement of L-6 production due to the formation of the bound-state (He-4 (l) over tilde (-)); for this purpose, we use the reaction rate given by the most recent calculation based on coupled-channel method. (c) 2007 Elsevier B.V. All rights reserved.