A light SUSY dark matter after CDMS-II, LUX and LHC Higgs data

被引：36
作者：
Cao, Junjie [1 ,2 ]
Han, Chengcheng [3 ]
Wu, Lei [4 ]
Wu, Peiwen [3 ]
Yang, Jin Min [3 ]
机构：
[1] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China
[2] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
[3] Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
[4] Univ Sydney, ARC Ctr Excellence Particle Phys Terascale, Sch Phys, Sydney, NSW 2006, Australia
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2014年 / 05期
基金：
中国国家自然科学基金;
关键词：
Supersymmetry Phenomenology; PREDICTIONS; CONSTRAINTS;
D O I：
10.1007/JHEP05(2014)056
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
In SUSY, a light dark matter is usually accompanied by light scalars to achieve the correct relic density, which opens new decay channels of the SM-like Higgs boson. Under current experimental constraints including the latest LHC Higgs data and the dark matter relic density, we examine the status of a light neutralino dark matter in the framework of NMSSM and confront it with the direct detection results of CoGeNT, CDMS-II and LUX. We have the following observations: (i) A dark matter as light as 8 GeV is still allowed and its scattering cross section off the nucleon can be large enough to explain the CoGeNT/CDMS-II favored region; (ii) The LUX data can exclude a sizable part of the allowed parameter space, but still leaves a light dark matter viable; (iii) The SM-like Higgs boson can decay into the light dark matter pair with an invisible branching ratio reaching 30% under the current LHC Higgs data, which may be tested at the 14 TeV LHC experiment.
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页数：17
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