Natural NMSSM after LHC Run I and the Higgsino dominated dark matter scenario

doi:http://dx.doi.org/10.1007/JHEP08(2016)037

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Natural NMSSM after LHC Run I and the Higgsino dominated dark matter scenario
	Cao, JJ ; He, YL ; Shang, LL ; Su, W 2,3; Zhang, Y 2,3
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2016
期号	8 页码:37
关键词	Supersymmetry Phenomenology STANDARD MODEL SEARCH SUPERSYMMETRY CONSTRAINTS PREDICTIONS TEVATRON PHYSICS BOSONS MSSM MASS
DOI	http://dx.doi.org/10.1007/JHEP08(2016)037
英文摘要	We investigate the impact of the direct searches for SUSY at LHC Run I on the naturalness of the Next-to-Minimal Supersymmetric Standard Model (NMSSM). For this end, we first scan the vast parameter space of the NMSSM to get the region where the fine tuning measures Delta(z) and Delta(h) at the electroweak scale are less than about 50, then we implement by simulations the constraints of the direct searches on the parameter points in the region. Our results indicate that although the direct search experiments are effective in excluding the points, the parameter intervals for the region and also the minimum reaches of Delta(z) and Delta(h) are scarcely changed by the constraints, which implies that the fine tuning of the NMSSM does not get worse after LHC Run I. Moreover, based on the results we propose a natural NMSSM scenario where the lightest neutralino (X) over tilde (0)(1) as the dark matter (DM) candidate is Higgsino-dominated. In this scenario, Delta(z) and Delta(h) may be as low as 2 without conflicting with any experimental constraints, and intriguingly (X) over tilde (0)(1) can easily reach the measured DM relic density due to its significant Singlino component. We exhibit the features of the scenario which distinguish it from the other natural SUSY scenario, including the properties of its neutralino-chargino sector and scalar top quark sector. We emphasize that the scenario can be tested either through searching for 3l+E-T(miss) signal at 14 TeV LHC or through future DM direct detection experiments.
学科主题	Physics
语种	英语
资助机构	National Natural Science Foundation of China (NNSFC) [11575053, 11275245, 11305050]
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23227]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Henan Normal Univ, Dept Phys, Jianshe East Rd, Xinxiang 453007, Peoples R China 2.Xi An Jiao Tong Univ, Dept Appl Phys, Xianning West Rd, Xian 710049, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Zhong Guam Cun East St, Beijing 100190, Peoples R China 4.Univ Chinese Acad, Sch Phys Sci, Yunnan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cao, JJ,He, YL,Shang, LL,et al. Natural NMSSM after LHC Run I and the Higgsino dominated dark matter scenario[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(8):37.
APA	Cao, JJ,He, YL,Shang, LL,Su, W,&Zhang, Y.(2016).Natural NMSSM after LHC Run I and the Higgsino dominated dark matter scenario.JOURNAL OF HIGH ENERGY PHYSICS(8),37.
MLA	Cao, JJ,et al."Natural NMSSM after LHC Run I and the Higgsino dominated dark matter scenario".JOURNAL OF HIGH ENERGY PHYSICS .8(2016):37.