Light dark matter candidates in intense laser pulses I: paraphotons and fermionic minicharged particles
Light dark matter candidates in intense laser pulses I: paraphotons and fermionic minicharged particles
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DOI：
10.1007/jhep06(2015)177
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发表时间：
2014-12
影响因子：
5.4
通讯作者：
S. Villalba-Ch'avez;C. Muller
中科院分区：
文献类型：
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作者：
S. Villalba-Ch'avez;C. Muller
由圆偏振激光波的强场驱动的偏振实验可以成为一种强有力的工具，以限制与额外U（1）规范对称性相关的尚未检测到的隐藏光子和微荷电粒子的参数空间。我们展示了在这样的背景极化的真空中探测电磁波的吸收和色散是如何由于可见U（1）规范扇区和这些假设的自由度之间的耦合而被修改的。分析结果表明，接近双光子反应阈值的区域是探测这些隐藏粒子的灵敏探针。现代激光系统的参数被用来估计相应的耦合常数在偶极磁铁驱动的实验是不太狭窄的区域的投影灵敏度。通过与仅假设微电荷存在的模型进行比较，分析了准光子场所起的作用。对于这两种情况下发现，最严格的排斥限制发生在最低的阈值质量，这是由一定的组合的场频率和支配的能量动量平衡的光生产的一对微荷电粒子。还分析了观测量对激光属性以及未知粒子参数的依赖关系。
Polarimetric experiments driven by the strong field of a circularly polarized laser wave can become a powerful tool to limit the parameter space of not yet detected hidden-photons and minicharged particles associated with extra U (1) gauge symmetries. We show how the absorption and dispersion of probe electromagnetic waves in the vacuum polarized by such a background are modified due to the coupling between the visible U (1)-gauge sector and these hypothetical degrees of freedom. The results of this analysis reveal that the regime close to the two-photon reaction threshold can be a sensititive probe of these hidden particles. Parameters of modern laser systems are used to estimate the projected sensitivities on the corresponding coupling constants in regions where experiments driven by dipole magnets are less constricted. The role played by a paraphoton field is analyzed via a comparison with a model in which the existence of minicharges is assumed only. For both scenarios is found that the most stringent exclusion limit occurs at the lowest threshold mass; this one being determined by a certain combination of the field frequencies and dictated by energy momentum balance of the photo-production of a pair of minicharged particles. The dependencies of the observables on the laser attributes as well as on the unknown particle parameters are also analyzed.