DREAMuS: Dark matter REsearch with Advanced Muon Source
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866908956900720640 |
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| author | Chen, Xiang Lu, Zejia Chen, Liangwen Gao, Jun Ge, Shao-Feng Hao, Zhanxu Hu, Yang Li, Bingzhi Mo, Cen Sun, Zhiyu Wang, Huayang Wu, Chonghao Xu, Yu Zhang, Xueheng Zhang, Yulei Li, Liang |
| author_facet | Chen, Xiang Lu, Zejia Chen, Liangwen Gao, Jun Ge, Shao-Feng Hao, Zhanxu Hu, Yang Li, Bingzhi Mo, Cen Sun, Zhiyu Wang, Huayang Wu, Chonghao Xu, Yu Zhang, Xueheng Zhang, Yulei Li, Liang |
| contents | We propose DREAMuS, a fixed-target experiment at the High Intensity Heavy-Ion Accelerator Facility (HIAF), to search for muon-philic dark matter mediated by light flavor-violating bosons. DREAMuS is designed to probe the parameter space of a muon-philic dark matter (DM) mediated by a light flavor-violating boson, specifically a vector $Z'$ (or a scalar $ϕ$) which is produced in muon-nucleus interactions and decays into dark matter particles with a distinctive detector signature. Precision tracking and time-of-flight measurements are used to suppress the Standard Model backgrounds. We find that DREAMuS can achieve competitive sensitivity in the GeV-scale muon-philic dark matter parameter space, reaching sensitivity to couplings at the $10^{-4}$, especially in the few-hundred-MeV region.In addition to a $μ^-$ run, we highlight the potential of a complementary $μ^+$ beam option, further improving sensitivity to dark matter below 200 $\mathrm{MeV}$ by an order of magnitude. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_10257 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | DREAMuS: Dark matter REsearch with Advanced Muon Source Chen, Xiang Lu, Zejia Chen, Liangwen Gao, Jun Ge, Shao-Feng Hao, Zhanxu Hu, Yang Li, Bingzhi Mo, Cen Sun, Zhiyu Wang, Huayang Wu, Chonghao Xu, Yu Zhang, Xueheng Zhang, Yulei Li, Liang High Energy Physics - Phenomenology High Energy Physics - Experiment We propose DREAMuS, a fixed-target experiment at the High Intensity Heavy-Ion Accelerator Facility (HIAF), to search for muon-philic dark matter mediated by light flavor-violating bosons. DREAMuS is designed to probe the parameter space of a muon-philic dark matter (DM) mediated by a light flavor-violating boson, specifically a vector $Z'$ (or a scalar $ϕ$) which is produced in muon-nucleus interactions and decays into dark matter particles with a distinctive detector signature. Precision tracking and time-of-flight measurements are used to suppress the Standard Model backgrounds. We find that DREAMuS can achieve competitive sensitivity in the GeV-scale muon-philic dark matter parameter space, reaching sensitivity to couplings at the $10^{-4}$, especially in the few-hundred-MeV region.In addition to a $μ^-$ run, we highlight the potential of a complementary $μ^+$ beam option, further improving sensitivity to dark matter below 200 $\mathrm{MeV}$ by an order of magnitude. |
| title | DREAMuS: Dark matter REsearch with Advanced Muon Source |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2604.10257 |