Z-Portal Continuum Dark Matter

被引:8
作者
Csaki, Csaba [1 ]
Hong, Sungwoo [1 ,2 ,3 ]
Kurup, Gowri [1 ,4 ]
Lee, Seung J. [5 ]
Perelstein, Maxim [1 ]
Xue, Wei [6 ]
机构
[1] Cornell Univ, Dept Phys, LEPP, Ithaca, NY 14853 USA
[2] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[3] Argonne Natl Lab, Lemont, IL 60439 USA
[4] Univ Oxford, Dept Phys, Parks Rd, Oxford OX1 3PJ, England
[5] Korea Univ, Dept Phys, Seoul 136713, South Korea
[6] Univ Florida, Dept Phys, Gainesville, FL 32611 USA
基金
英国科学技术设施理事会; 新加坡国家研究基金会;
关键词
'current - Cascade decay - Continuum model - Cosmic microwaves background - Dark matter - Direct-detection - On potentials - Simple++ - The standard model - Thermal;
D O I
10.1103/PhysRevLett.128.081807
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We examine the possibility that dark matter (DM) consists of a gapped continuum, rather than ordinary particles. A weakly interacting continuum (WIC) model, coupled to the standard model via a Z portal, provides an explicit realization of this idea. The thermal DM relic density in this model is naturally consistent with observations, providing a continuum counterpart of the "WIMP miracle." Direct detection cross sections are strongly suppressed compared to ordinary Z-portal WIMP, thanks to a unique effect of the continuum kinematics. Continuum DM states decay throughout the history of the Universe, and observations of cosmic microwave background place constraints on potential late decays. Production of WICs at colliders can provide a striking cascade-decay signature. We show that a simple Z-portal WIC model provides a fully viable DM candidate consistent with all current experimental constraints.
引用
收藏
页数:7
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