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arXiv 2602.04858hep-phastro-ph.COhep-ex
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原初黑洞作为轻暗物质的宇宙加速器:新的直接探测限制

Primordial black holes as cosmic accelerators of light dark matter: Novel direct detection constraints

State Key Laboratory of Dark Matter Physics, Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University(上海交通大学物理与天文学院、紫江研究院暗物质国家重点实验室);Key Laboratory for Particle Astrophysics and Cosmology (MOE) & Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai Jiao Tong University(上海交通大学粒子天体物理与宇宙学教育部重点实验室、上海粒子物理与宇宙学重点实验室);Indian Institute of Science Education and Research - Bhopal(印度科学教育研究所博帕尔分校)

Sk Jeesun, Anirban Majumdar, Rahul Srivastava

AI总结:

研究通过原初黑洞蒸发产生轻暗物质,探讨其在直接探测实验中的电子 recoil 特征,并利用 XENONnT、LZ 和 PandaX-4T 数据对轻暗物质进行限制,同时讨论未来中微子探测器的探测前景。

摘要:

当前多吨级暗物质探测器难以检测银河系中的轻暗物质,因其 recoil 测量的能量阈值限制。然而,原初黑洞可通过霍金辐射蒸发为能量由黑洞温度决定的粒子,从而产生弱相互作用的轻暗物质(或暗辐射)粒子,这些粒子可到达地球并具有足够的通量和动能超过实验阈值。这为探测轻暗物质提供了新的途径。本文通过考虑费米子暗物质通过原初黑洞蒸发产生,并研究其在直接探测实验中的电子 recoil 特征。分析了能量独立(常数)和能量依赖(标量和矢量介导)的 DM-电子相互作用,强调了 recoil 谱对相互作用洛伦兹结构的强依赖性。此外,还考虑了 DM 穿透地球地壳时动能损失的衰减效应,这可能显著修改入射 DM 流量。结合这些效应,利用 XENONnT、LZ 和 PandaX-4T 的电子 recoil 数据对轻暗物质进行限制。最后,讨论了当前和未来世代中微子探测器(如超乎 Kamiokande 和 Hyper-Kamiokande)对这类暗物质的探测前景。

英文摘要:

Current multi-tonne-scale dark matter (DM) detectors are largely incapable of detecting light dark matter from the Galactic halo due to the energy threshold limitations of their recoil measurements. However, primordial black holes (PBHs) can evaporate via Hawking radiation to particles whose energies are set by the black hole temperature. Consequently, weakly interacting light dark matter (or dark radiation) particles produced in this manner can reach the Earth with sufficient flux and kinetic energy above the experimental thresholds. This opens up a novel avenue to probe the light dark sector in terrestrial experiments. In this work, we explore this possibility by considering fermionic DM produced through PBH evaporation and investigating its electron recoil signatures in direct detection experiments. We analyze both energy independent (constant) and energy dependent (scalar and vector mediated) DM-electron interactions, highlighting the strong dependence of the recoil spectra on the underlying Lorentz structure of the interaction. In addition, we also account for the attenuation effects due to the loss of kinetic energy while DM traverses through Earth's crust, which can significantly modify the incoming DM flux. Incorporating these effects carefully, we place constraints on light DM using the electron recoil data from XENONnT, LZ, and PandaX-4T. Finally, we also discuss the detection prospects of such dark matter in current and future generation neutrino detectors, such as Super-Kamiokande and Hyper-Kamiokande.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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