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题名: Closing in on singlet scalar dark matter: LUX, invisible Higgs decays and gamma-ray lines
作者: Feng, Lei1; Profumo, Stefano2, 3; Ubaldi, Lorenzo4
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2015-03-10
期号: 3
关键词: Beyond Standard Model ; Higgs Physics ; Cosmology of Theories beyond the SM
DOI: 10.1007/JHEP03(2015)045
文章类型: Article
英文摘要: We study the implications of the Higgs discovery and of recent results from dark matter searches on real singlet scalar dark matter. The phenomenology of the model is defined by only two parameters, the singlet scalar mass mS and the quartic coupling a(2) between the SU(2) Higgs and the singlet scalar. We concentrate on the window 5 < m(S)/GeV < 300. The most dramatic impact on the viable parameter space of the model comes from direct dark matter searches with LUX, and, for very low masses in the few GeV range, from constraints from the invisible decay width of the Higgs. In the resonant region the best constraints come from gamma-ray line searches. We show that they leave only a small region of viable parameter space, for dark matter masses within a few percent of half the mass of the Higgs. We demonstrate that direct and indirect dark matter searches (especially the search for monochromatic gamma-ray lines) will play a key role in closing the residual parameter space in the near future.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Particles & Fields
研究领域[WOS]: Physics
关键词[WOS]: STANDARD MODEL ; LHC ; BOSON
收录类别: SCI
项目资助者: 973 Program of China(2013CB837000) ; National Natural Science of China(11303096) ; US Department of Energy(DE-SC0010107-001)
语种: 英语
WOS记录号: WOS:000363467000001
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16035
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
2.Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA
3.Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
4.Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel
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