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Dark matter in the singlet extension of MSSM: explanation of Pamela and implication on Higgs phenomenology
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
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
ISSN1126-6708
期号11页码:-
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.
部门归属[Wang, WY; Xiong, ZH] Beijing Univ Technol, Coll Appl Sci, Inst Theoret Phys, Beijing 100020, Peoples R China; [Yang, JM; Yu, LX] Acad Sinica, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
关键词Supersymmetric Standard Model Cosmic-ray Positron Tan-beta
学科领域Physics
资助者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] ; National Natural Science Foundation of China[10821504, 10725526, 10635030]; Natural Science Foundation of Beijing[1072001]
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收录类别SCI
资助者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] ; National Natural Science Foundation of China[10821504, 10725526, 10635030]; Natural Science Foundation of Beijing[1072001]
WOS记录号WOS:000273012100053
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5221
专题理论物理所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
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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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