Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology
文献类型：期刊论文
| 作者 | Wang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China; Wang, Wenyu; Xiong, Zhaohua; Yang, Jin Min; Yu, Li-Xin |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2009 |
| 期号 | 11页码:- |
| 关键词 | Supersymmetric Standard Model Cosmic-ray Positron Tan-beta |
| ISSN号 | 1126-6708 |
| 英文摘要 | As discussed recently by Hooper and Tait, the singlino-like dark matter in the Minimal Supersymmetric Standard Model (MSSM) extended by a singlet Higgs superfield can give a perfect explanation for both the relic density and the Pamela result through the Sommerfeld-enhanced annihilation into singlet Higgs bosons (a or h followed by h -> aa) with a being light enough to decay dominantly to muons or electrons. In this work we analyze the parameter space required by such a dark matter explanation and also consider the constraints from the LEP experiments. We find that although the light singlet Higgs bosons have small mixings with the Higgs doublets in the allowed parameter space, their couplings with the SM-like Higgs boson h(SM) (the lightest doublet-dominant Higgs boson) can be enhanced by the soft parameter A(kappa) and, in order to meet the stringent LEP constraints, the h(SM) tends to decay into the singlet Higgs pairs a a or hh instead of b (b) over bar. So the h(SM) produced at the LHC will give a multi-muon signal, h(SM) -> aa -> 4 mu or h(SM) -> hh -> 4a -> 8 mu. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000273012100053 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5221]  |
| 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 | Wang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China,Wang, Wenyu,Xiong, Zhaohua,et al. Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology[J]. JOURNAL OF HIGH ENERGY PHYSICS,2009(11):-. |
| APA | Wang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China,Wang, Wenyu,Xiong, Zhaohua,Yang, Jin Min,&Yu, Li-Xin.(2009).Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology.JOURNAL OF HIGH ENERGY PHYSICS(11),-. |
| MLA | Wang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China,et al."Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology".JOURNAL OF HIGH ENERGY PHYSICS .11(2009):-. |
入库方式： OAI收割
来源：理论物理研究所
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