Magnetic mixing ? electric minicharges from magnetic monopoles
Magnetic mixing ? electric minicharges from magnetic monopoles
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磁力搅拌 ?
DOI：
10.1088/1126-6708/2009/06/037
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发表时间：
2009
影响因子：
5.4
通讯作者：
V. Khoze
中科院分区：
文献类型：
--
作者：
F. Bruemmer;J. Jaeckel;V. Khoze
标准模型的许多扩展都要求存在一个“隐藏”部门。我们考虑的设置中的隐藏部门在红外线包含一个U（1）规范因子与磁单极子，例如't胡夫-波利亚科夫单极的一个潜在的非阿贝尔规范群。在CP破坏的存在下，由于维滕效应，这些单极子在隐藏扇区中获得电荷。我们表明，相当普遍，他们也获得（小）电荷下的可见电磁规范组。这是“磁性混合”的结果，正如我们所展示的，磁性混合经常作为动力学混合的自然伙伴出现。即使低能U（1）来自单个非阿贝尔规范群，动力学和磁混合也是辐射诱导的。我们认为，隐藏的部门的单极子可以是轻的，因此，他们的电微电荷可以在当前和不久的将来的低能量实验测试。
Many extensions of the Standard Model require the existence of a ``hidden'' sector. We consider settings where the hidden sector in the infrared contains a U(1) gauge factor with magnetic monopoles, for instance 't Hooft-Polyakov monopoles of an underlying non-abelian gauge group. In the presence of CP violation these monopoles acquire an electric charge in the hidden sector due to the Witten effect. We show that quite generally they also acquire (small) electric charges under the visible electromagnetic gauge group. This is a result of ``magnetic mixing'' which, as we show, often arises as a natural partner of kinetic mixing. Both kinetic and magnetic mixing are naturally induced radiatively even if the low-energy U(1)s arise from a single non-abelian gauge group. We argue that the hidden sector monopoles can be light and their electric minicharges could thus be testable in current and near future low-energy experiments.