Late-decaying Q-ball with BBN lifetime
文献类型：期刊论文
| 作者 | Wang, F; Yang, JM ; Yang, JM , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
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| 刊名 | NUCLEAR PHYSICS B
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| 出版日期 | 2005 |
| 卷号 | 709期号:40910页码:409-418 |
| 关键词 | Flat Directions Dark-matter Baryogenesis Light Wmap |
| ISSN号 | 0550-3213 |
| 英文摘要 | In the Affleck-Dine mechanism of baryogenesis, nontopological solitons called Q-balls can be formed. In this work we propose that such Q-balls decay during the BBN era and study the cosmological consequence of such late decays. We find that the late-decaying baryonic Q-balls with lifetime of about 10(3) s can provide a new developing mechanism for the BBN through a rolling baryon-to-photon ratio eta, which can naturally explain the discrepancy of the BBN prediction with the WMAP data on Li-7 abundance. For the late-decaying leptonic Q-balls with lifetime of about 10(6) s, we find that their decay product, gravitinos, can serve as a dark matter candidate and give an explanation for the approximate equality of dark and baryon matter densities. (C) 2004 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000227312200017 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13860]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Yang, JM , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, F,Yang, JM,Yang, JM , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.. Late-decaying Q-ball with BBN lifetime[J]. NUCLEAR PHYSICS B,2005,709(40910):409-418. |
| APA | Wang, F,Yang, JM,&Yang, JM , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China..(2005).Late-decaying Q-ball with BBN lifetime.NUCLEAR PHYSICS B,709(40910),409-418. |
| MLA | Wang, F,et al."Late-decaying Q-ball with BBN lifetime".NUCLEAR PHYSICS B 709.40910(2005):409-418. |
入库方式： OAI收割
来源：理论物理研究所
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