Eluding the BBN constraints on the stable gravitino

被引：21

作者：

Buchmueller, W.

Hamaguchi, K.

Ibe, M. ^{[1
]}

Yanagida, T. T.

机构：

[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[2] DESY, D-22603 Hamburg, Germany

来源：

PHYSICS LETTERS B | 2006年 / 643卷 / 02期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/j.physletb.2006.07.070

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate how late-time entropy production weakens the big-bang nucleosynthesis (BBN) constraints on the gravitino as lightest superparticle with a charged slepton as next-to-lightest superparticle. We find that with a moderate amount of entropy production, the BBN constraints can be eluded for most of the parameter space relevant for the discovery of the gravitino. This is encouraging for experimental tests of supergravity at LHC and ILC. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：124 / 126

页数：3

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