DARK MATTER IN THE MSSM AND ITS SINGLET EXTENSION
文献类型：期刊论文
| 作者 | Yang, JM , Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China; Yang, Jin Min |
| 刊名 | MODERN PHYSICS LETTERS A
 |
| 出版日期 | 2010 |
| 卷号 | 25期号:41225页码:976-982 |
| 关键词 | Supersymmetric Standard Model Cosmic-ray Positron Higgs Sector Excess |
| ISSN号 | 0217-7323 |
| 英文摘要 | We briefly review the supersymmetric explanation for the cosmic dark matter. Although the neutralino in the minimal supersymmetric model (MSSM), the next-to-minimal supersymmetric model (NMSSM) and the nearly minimal supersymmetric model (nMSSM) can naturally explain the dark matter relic density, the PAMELA result can hardly be explained in these popular models. In the general singlet extension of the MSSM,both the PAMELA result and the relic density can be explained by the singlino-like neutralino. Such singlino-like neutralinos annihilate into the singlet-like Higgs bosons, which are light enough to decay dominantly to muons or electrons, and the annihilation cross section can be greatly enhanced by the Sommerfeld effect via exchanging alight CP-even singlet-like Higgs boson. In this scenario, in order to meet the stringent LEP constraints, the SM-like Higgs boson tends to decay into the singlet Higgs pairs instead of b (b) over bar and consequently it will give a multi-muon signal h(SM) -> aa -> 4 mu or h(SM) -> hh -> 4a -> 8 mu at the LHC. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000276973900013 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5122]  |
| 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 , Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, JM , Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China,Yang, Jin Min. DARK MATTER IN THE MSSM AND ITS SINGLET EXTENSION[J]. MODERN PHYSICS LETTERS A,2010,25(41225):976-982. |
| APA | Yang, JM , Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China,&Yang, Jin Min.(2010).DARK MATTER IN THE MSSM AND ITS SINGLET EXTENSION.MODERN PHYSICS LETTERS A,25(41225),976-982. |
| MLA | Yang, JM , Henan Normal Univ, Coll Phys & Informat Engn, Xinxiang 453007, Peoples R China,et al."DARK MATTER IN THE MSSM AND ITS SINGLET EXTENSION".MODERN PHYSICS LETTERS A 25.41225(2010):976-982. |
入库方式： OAI收割
来源：理论物理研究所
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