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Wang, Wenyu; Xiong, Zhaohua; Yang, Jin Min; Yu, Li-Xin; Wang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China
Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
KeywordSupersymmetric Standard Model Cosmic-ray Positron Tan-beta
AbstractAs 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.
2009
ISSN1126-6708
Issue11Pages:-
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China[10821504, 10725526, 10635030]; Natural Science Foundation of Beijing[1072001] ; National Natural Science Foundation of China[10821504, 10725526, 10635030]; Natural Science Foundation of Beijing[1072001] ; National Natural Science Foundation of China[10821504, 10725526, 10635030]; Natural Science Foundation of Beijing[1072001] ; National Natural Science Foundation of China[10821504, 10725526, 10635030]; Natural Science Foundation of Beijing[1072001]
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5221
Collection理论物理所科研产出_SCI论文
Corresponding AuthorWang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wenyu,Xiong, Zhaohua,Yang, Jin Min,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, Wenyu,Xiong, Zhaohua,Yang, Jin Min,Yu, Li-Xin,&Wang, WY , Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China.(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, Wenyu,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):-.
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