The ZZ′ kinetic mixing in the light of the recent direct and indirect dark matter searches
The ZZ′ kinetic mixing in the light of the recent direct and indirect dark matter searches
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DOI：
10.1088/1475-7516/2011/07/009
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发表时间：
2011-04
影响因子：
6.4
通讯作者：
Y. Mambrini
中科院分区：
文献类型：
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作者：
Y. Mambrini
有几种构造，无论是否起源于弦，都会产生标准模型（SM）的阿贝尔规范扩展。即使SM的粒子在这个额外的U'(1)下不带电，也不能避免U'(1)和超荷y(1)之间的动力学混合。在这项工作中，我们考虑到加速器物理学，直接探测和间接探测暗物质的最新实验数据，严格限制了这种动力学混合。我们表明，在MZD 2mDM， ZD是与额外的U'(1)相关的规范玻色子的极线上，尊重WMAP和实验约束的区域现在非常狭窄。
Several constructions, of stringy origins or not, generate abelian gauge extensions of the Standard Model (SM). Even if the particles of the SM are not charged under this extra U'(1), one cannot avoid the presence of a kinetic mixing between U'(1) and the hypercharge UY(1). In this work, we constraint drastically this kinetic mixing, taking into account the recent experimental data from accelerator physics, direct detection and indirect detection of dark matter. We show that the region respecting WMAP and experimental constraints is now very narrowed along the pole line where MZD 2mDM, ZD being the gauge boson associated to the extra U'(1).