共振棒探测器对宏观暗物质的约束
Resonant bar detector constraints on macro dark matter
摘要:
目前的宇宙学标准模型$Λ$ CDM要求暗物质占宇宙总能量预算的$25\%$左右。然而,相当令人困惑的是,在目前粒子物理学的标准模型中似乎没有候选粒子。假设冷暗物质(CDM)范式的有效性,暗物质迄今为止一直逃避检测,因为它本质上是一种弱相互作用的物质,或者因为它的相互作用被其高组成质量和低数密度所抑制。到目前为止,大多数解释暗物质的方法都假设前者,因此需要超越标准模型的粒子,这些粒子还没有被直接或间接地观察到。鉴于缺乏这类候选人的证据,现在是考虑后一种可能性的时候了,这种可能性考虑到了可能来自标准模型也可能不来自标准模型的候选人。在这项工作中,我们扩展了最近的研究,这一般类所谓的宏观暗物质-候选人的特征质量的克和几何截面厘米$^2$。我们认为新的界限,可以设置使用现有的数据从共振棒引力波探测器NAUTILUS和EXPLORER。
英文摘要:
The current standard model of cosmology, $Λ$CDM, requires dark matter to make up around $25\%$ of the total energy budget of the Universe. Yet, quite puzzlingly, there appears to be no candidate particle in the current Standard Model of particle physics. Assuming the validity of the cold dark matter (CDM) paradigm, dark matter has evaded detection thus far either because it is intrinsically a weakly interacting substance or because its interactions are suppressed by its high constituent mass and low number density. Most approaches to explain dark matter to date assume the former and therefore require beyond-the-Standard-Model particles that have yet to be observed directly or indirectly. Given the dearth of evidence for this class of candidates it is timely to consider the latter possibility, which allows for candidates that may or may not arise from the Standard Model. In this work we extend a recent study of this general class of so-called macro dark matter--candidates with characteristic masses of grams and geometric cross sections of cm$^2$. We consider new bounds that can be set using existing data from the resonant bar gravitational wave detectors NAUTILUS and EXPLORER.
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