Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology

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	Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology
	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
	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
内容类型	期刊论文
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):-.