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arXiv 2602.07902hep-ph
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暗物质作为被屏蔽的普通物质

Dark Matter as Screened Ordinary Matter

Glasgow University（格拉斯哥大学）；Niels Bohr Institute（尼尔斯·玻尔研究所）

Colin D. Froggatt, Holger Bech Nielsen

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Proceedings for the 28th International workshop, What comes beyond the standard models, 2025, July 7 - 16
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AI总结：

该研究提出暗物质可能主要由普通物质构成，并通过X射线数据拟合支持这一观点。

摘要：

我们审视了长期以来研究的暗物质模型，将其视为一种推测的新真空中的高度压缩的普通物质珠子，其中包含如此多的普通物质，以至于暗物质珠子中的普通物质含量占主导地位。大多数暗物质模型认为暗物质主要由新物理物质组成，如WIMPs（弱相互作用大质量粒子），这些可能是已知粒子的超对称伙伴，或者如Maxim Khlopov的模型中，一种带有氦核的双负电荷新物理粒子。但通常新物理物质在重量上占主要部分。只有在我们的模型中，暗物质中的普通物质含量才占主导地位。我们在这里揭示了一些弱现象学证据，表明实际上暗物质应为以普通物质为主（按重量计算）的类型，因此以我们之前研究颇多的真空类型2模型作为典型例子。主要证据是，我们成功地拟合了数据，其中3.5 keV的X射线，据认为来自暗物质，既来自暗物质与暗物质的碰撞，也来自暗物质与普通物质的碰撞！两种机制的量级如此相似，以至于都被观测到，这表明它们的相似性源于暗物质与普通物质之间显著的相似性。普通物质和暗物质的量仅相差一个因子6，这指向同一方向。利用从这种拟合中获得的信息，我们发展了我们的推测，即暗物质的主要组成部分（按重量计算）是普通物质，甚至适用于DAMA实验。实际上我们发现天空中有三个地点，我们用普通物质加暗物质的碰撞拟合了观测到的3.5 keV X射线的产生。

英文摘要：

We look at our since long studied model for dark matter as being pearls of a speculated new vacuum containing highly compressed ordinary matter, with so much ordinary in it that the content of ordinary matter in the dark matter pearls dominate. Most dark matter models have the dark matter consisting mainly of new-physics-matter such as WIMPs being supersymmetric partners of possibly known particles or, as in Maxim Khlopovs model, a doubly negatively charged new-physics-particle with a helium nucleus attached. But usually the new-physics matter makes up weight-wise the major content. It is only in our model that the ordinary matter content in the dark matter dominates. We here expose some weak phenomenological evidence that, in truth, dark matter should be of the type with a dominant component of ordinary matter (weight-wise), thus favoring as the typical example our previously so much studied vacuum type 2 model. The main such evidence is that we manage a fit to data in which the 3.5 keV X-rays, presumed to result from dark matter, come both from collisions of dark matter with dark matter and from dark matter with ordinary matter! Both mechanisms are of so similar an order of magnitude that they are both seen, indicating that their similarity is due to a significant similarity between dark with ordinary matter. The fact that the amounts of ordinary and dark matter only deviate by a factor 6 points in the same direction. Using the information obtained from this fitting, we develop our speculation that the main content weight-wise of dark matter is ordinary matter to the very DAMA experiment. Actually we found three spots on the sky in which we fit the observed production of 3.5 keV X-rays with ordinary plus dark scattering.

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