Big-bang nucleosynthesis with long-lived charged slepton

被引：79
|
作者：
Kawasaki, Masahiro
Kohri, Kazunori [1 ]
Moroi, Takeo
机构：
[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England
[2] Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan
[3] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
来源：
PHYSICS LETTERS B | 2007年 / 649卷 / 5-6期
关键词：
D O I：
10.1016/j.physletb.2007.03.063
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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.
引用
收藏
页码：436 / 439
页数：4
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