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arXiv 1201.5902hep-phastro-ph.COhep-th
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冷暗物质

WISPy Cold Dark Matter

Paola Arias, Davide Cadamuro, Mark Goodsell, Joerg Jaeckel, Javier Redondo, Andreas Ringwald

摘要:

极弱相互作用细粒子(英语:Very weakly interacting slim particles,WISPs),例如类轴子粒子(英语:Axion-like particles,ALP)或隐藏光子(英语:Hidden photons,HP),可能是在早期宇宙中通过未对准机制非热产生的,并作为冷的暗物质群体存活到今天。我们发现,无论是ALP和HP的主要相互作用与标准模型产生的耦合到光子,一个巨大的区域在参数空间跨越光子耦合和ALP或HP质量可以引起所观察到的冷暗物质。值得注意的是,这个参数空间的一个大区域与基础物理学中动机良好的模型所预测的相吻合。在可预见的未来,利用Haloscopes(利用微波腔直接搜索暗物质)、Helioscopes(搜索太阳ALP或HP)或光穿透墙技术等广泛的实验搜索可以探测这一参数空间的大部分。

英文摘要:

Very weakly interacting slim particles (WISPs), such as axion-like particles (ALPs) or hidden photons (HPs), may be non-thermally produced via the misalignment mechanism in the early universe and survive as a cold dark matter population until today. We find that, both for ALPs and HPs whose dominant interactions with the standard model arise from couplings to photons, a huge region in the parameter spaces spanned by photon coupling and ALP or HP mass can give rise to the observed cold dark matter. Remarkably, a large region of this parameter space coincides with that predicted in well motivated models of fundamental physics. A wide range of experimental searches -- exploiting haloscopes (direct dark matter searches exploiting microwave cavities), helioscopes (searches for solar ALPs or HPs), or light-shining-through-a-wall techniques -- can probe large parts of this parameter space in the foreseeable future.

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