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题名: Light dark matter in NMSSM and implication on Higgs phenomenology
作者: Cao, JJ ;  Hikasa, K ;  Wang, WY ;  Yang, JM
刊名: PHYSICS LETTERS B
出版日期: 2011
卷号: 703, 期号:3, 页码:292-297
关键词: SUPERSYMMETRIC STANDARD MODEL
学科分类: Physics
通讯作者: Yang, JM (reprint author), Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Yang, Jin Min] Acad Sinica, Inst Theoret Phys, Beijing 100190, Peoples R China; [Cao, Junjie] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China; [Hikasa, Ken-ichi] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan; [Wang, Wenyu] Beijing Univ Technol, Inst Theoret Phys, Coll Appl Sci, Beijing 100124, Peoples R China
英文摘要: For the experimental search of neutralino dark matter, it is important to know its allowed mass and scattering cross section with the nucleon. In order to figure out how light a neutralino dark matter can be predicted in low energy supersymmetry, we scan over the parameter space of the NMSSM (next-to-minimal supersymmetric model), assuming all the relevant soft mass parameters to be below TeV scale. We find that in the parameter space allowed by current experiments the neutralino dark matter can be as light as a few GeV and its scattering rate off the nucleon can reach the sensitivity of XENON100 and CoGeNT. As a result, a sizable parameter space is excluded by the current XENON100 and CoGeNT data (the plausible CoGeNT dark matter signal can also be explained). The future 6000 kg-days exposure of XENON100 will further explore (but cannot completely cover) the remained parameter space. Moreover, we find that in such a light dark matter scenario a light CP-even or CP-odd Higgs boson must be present to satisfy the measured dark matter relic density. Consequently, the SM-like Higgs boson h(SM) may decay predominantly into a pair of light Higgs bosons or a pair of neutralinos so that the conventional decays like h(SM) -> gamma gamma is much suppressed. (C) 2011 Elsevier B.V. All rights reserved.
资助者: JSPS [S-11028]; NSFC [10821504, 10725526, 11075045, 11005006]; Doctor Foundation of BJUT from China [X0006015201102]; Grant-in-Aid for Scientific Research from Japan [14046201]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000295198300012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14272
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Cao, JJ,Hikasa, K,Wang, WY,et al. Light dark matter in NMSSM and implication on Higgs phenomenology[J]. PHYSICS LETTERS B,2011,703(3):292-297.
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