Probing Cosmic Ray Composition and Muon-philic Dark Matter via Muon Tomography
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915938287222784 |
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| author | Liu, Cheng-en Zhang, Rongfeng Wang, Zijian Levin, Andrew Michael Gao, Leyun Li, Jinning Fan, Minxiao Wu, Youpeng Qin, Zibo Ban, Yong Yang, Zaihong Li, Qite Zhou, Chen Li, Qiang |
| author_facet | Liu, Cheng-en Zhang, Rongfeng Wang, Zijian Levin, Andrew Michael Gao, Leyun Li, Jinning Fan, Minxiao Wu, Youpeng Qin, Zibo Ban, Yong Yang, Zaihong Li, Qite Zhou, Chen Li, Qiang |
| contents | This work presents a novel cosmic-ray scattering experiment employing a Resistive Plate Chambers (RPC) muon tomography system. By introducing the scattering angle between incident and outgoing cosmic-ray tracks as a key observable, this approach enables simultaneous studies of secondary cosmic-ray composition and searching for new physics. During a 63-day campaign, 1.18 million cosmic ray scattering events were recorded and analyzed. By performing combined template fits to the observed angular distribution, particle abundances are measured -- for example, resolving the electron component at $\sim 2\%$ precision. Furthermore, constraints are established on elastic muon dark matter (DM) scattering cross-sections for muon-philic dark matter. At the $95\%$ confidence level, the limit reaches 1.61 $\times$ $10^{-17}$ $\rm{cm}^{2}$ for 1 GeV slow DM, demonstrating sensitivity limit to light muon-coupled slow DM, in scenarios where a strongly interacting dark matter component is captured and thermalized within the Earth, leading to large surface densities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_23458 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing Cosmic Ray Composition and Muon-philic Dark Matter via Muon Tomography Liu, Cheng-en Zhang, Rongfeng Wang, Zijian Levin, Andrew Michael Gao, Leyun Li, Jinning Fan, Minxiao Wu, Youpeng Qin, Zibo Ban, Yong Yang, Zaihong Li, Qite Zhou, Chen Li, Qiang High Energy Physics - Experiment High Energy Astrophysical Phenomena High Energy Physics - Phenomenology Nuclear Experiment This work presents a novel cosmic-ray scattering experiment employing a Resistive Plate Chambers (RPC) muon tomography system. By introducing the scattering angle between incident and outgoing cosmic-ray tracks as a key observable, this approach enables simultaneous studies of secondary cosmic-ray composition and searching for new physics. During a 63-day campaign, 1.18 million cosmic ray scattering events were recorded and analyzed. By performing combined template fits to the observed angular distribution, particle abundances are measured -- for example, resolving the electron component at $\sim 2\%$ precision. Furthermore, constraints are established on elastic muon dark matter (DM) scattering cross-sections for muon-philic dark matter. At the $95\%$ confidence level, the limit reaches 1.61 $\times$ $10^{-17}$ $\rm{cm}^{2}$ for 1 GeV slow DM, demonstrating sensitivity limit to light muon-coupled slow DM, in scenarios where a strongly interacting dark matter component is captured and thermalized within the Earth, leading to large surface densities. |
| title | Probing Cosmic Ray Composition and Muon-philic Dark Matter via Muon Tomography |
| topic | High Energy Physics - Experiment High Energy Astrophysical Phenomena High Energy Physics - Phenomenology Nuclear Experiment |
| url | https://arxiv.org/abs/2507.23458 |