GRAVITINO-INDUCED BARYOGENESIS - A PROBLEM MADE A VIRTUE

被引：77
作者：
CLINE, J
RABY, S
机构：
[1] Department of Physics, Ohio State University, Columbus
[2] Theoretical Division, Los Alamos National Laboratory, Los Alamos
来源：
PHYSICAL REVIEW D | 1991年 / 43卷 / 06期
关键词：
D O I：
10.1103/PhysRevD.43.1781
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate cosmic baryon generation in the minimal low-energy supergravity model with the addition of dimension-four baryon-violating interactions. It is shown that gravitinos, if heavier than squarks, can give rise to a baryon asymmetry as they decay. Assuming that gravitinos are not diluted by inflation in the post-Planckian epoch, we find a realistic baryon-to-photon ratio for various ranges of gaugino and squark masses between 100 GeV and 10 TeV. We thus solve two problems simultaneously-the question of whence baryons originate and how to avoid washing out the baryon-photon ratio due to entropy production from decaying gravitinos.
引用
收藏
页码：1781 / 1787
页数：7
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