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.

引用

页数：17

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