Light dark matter candidates in intense laser pulses II: the relevance of the spin degrees of freedom
Light dark matter candidates in intense laser pulses II: the relevance of the spin degrees of freedom
复制标题
DOI：
10.1007/jhep02(2016)027
复制
发表时间：
2015-10
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：
--
作者：
S. Villalba-Ch'avez;C. Muller
由激光脉冲场辅助的光学搜索可能允许探索各种尚未检测到的暗物质候选者，例如隐藏光子和标量微带电粒子。这些假设的自由度可以被理解为包含隐藏的 U (1) 轨距扇区的标准模型扩展的自然结果。在本文中，我们研究了两种候选物对中等强度长激光脉冲在真空中极化的探测电磁波传播的影响，这种方式补充了我们之前的研究 [JHEP 06 (2015) 177]。我们描述了与费米子微电荷模型相比，标量带电载流子中自旋的缺失如何改变光子-顺光子振荡。特别是，我们发现接近最低阈值质量的状态可能为微型带电标量提供最严格的上限。这里研究的纯激光实验可以排除粒子参数空间中的一个扇区，该扇区尚未通过偶极磁体驱动的设置在实验上排除。我们解释了如何利用探测光子获取的椭圆率和偏振面旋转的符号及其对脉冲参数的依赖性来阐明电荷载流子的量子统计。
Optical searches assisted by the field of a laser pulse might allow for exploring a variety of not yet detected dark matter candidates such as hidden-photons and scalar minicharged particles. These hypothetical degrees of freedom may be understood as a natural consequence of extensions of the Standard Model incorporating a hidden U (1)-gauge sector. In this paper, we study the effects induced by both candidates on the propagation of a probe electromagnetic wave in the vacuum polarized by a long laser pulse of moderate intensity, this way complementing our previous study [JHEP 06 (2015) 177]. We describe how the absence of a spin in the scalar charged carriers modifies the photon-paraphoton oscillations as compared with a fermionic minicharge model. In particular, we find that the regime close to their lowest threshold mass might provide the most stringent upper limit for minicharged scalars. The pure-laser based experiment investigated here could allow for excluding a sector in the parameter space of the particles which has not been experimentally ruled out by setups driven by dipole magnets. We explain how the sign of the ellipticity and rotation of the polarization plane acquired by a probe photon—in combination with their dependencies on the pulse parameters—can be exploited to elucidate the quantum statistics of the charge carriers.