Search for light Dark Sectors with GeV Muon Beams
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arXiv
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| Autores principales: | , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866909899244437504 |
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| author | Wang, Zijian Gao, Leyun Chen, Zhuo Liu, Cheng-en Li, Jinning Li, Qite Zhou, Chen Li, Qiang Xu, Yu Zhang, Xueheng Chen, Liangwen Sun, Zhiyu Zhang, Ce |
| author_facet | Wang, Zijian Gao, Leyun Chen, Zhuo Liu, Cheng-en Li, Jinning Li, Qite Zhou, Chen Li, Qiang Xu, Yu Zhang, Xueheng Chen, Liangwen Sun, Zhiyu Zhang, Ce |
| contents | Sub-GeV light dark matter often requires new light mediators, such as a dark $Z$ boson in the $L_μ- L_τ$ gauge theory. We study the search potential for such a $Z^\prime$ boson via the process $μe^- \to μe^- X$, with $X$ decaying invisibly, in a muon on-target experiment using a high-intensity 1-10 GeV muon beam from facilities such as HIAF-HIRIBL. Events are identified by the scattered muon and electron from the target using silicon strip detectors in a single-station telescope system. Backgrounds are suppressed through a trained boosted decision tree (BDT) classifier, and activity in downstream subdetectors remains low. This approach can probe a $Z^\prime$ boson in the 10 MeV mass range with improved sensitivity. Nearly three orders of magnitude improvement is achievable with a full multi-telescope station system employing a 160 GeV muon beam at CERN, such as in the MUonE experiment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_08950 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Search for light Dark Sectors with GeV Muon Beams Wang, Zijian Gao, Leyun Chen, Zhuo Liu, Cheng-en Li, Jinning Li, Qite Zhou, Chen Li, Qiang Xu, Yu Zhang, Xueheng Chen, Liangwen Sun, Zhiyu Zhang, Ce High Energy Physics - Phenomenology Sub-GeV light dark matter often requires new light mediators, such as a dark $Z$ boson in the $L_μ- L_τ$ gauge theory. We study the search potential for such a $Z^\prime$ boson via the process $μe^- \to μe^- X$, with $X$ decaying invisibly, in a muon on-target experiment using a high-intensity 1-10 GeV muon beam from facilities such as HIAF-HIRIBL. Events are identified by the scattered muon and electron from the target using silicon strip detectors in a single-station telescope system. Backgrounds are suppressed through a trained boosted decision tree (BDT) classifier, and activity in downstream subdetectors remains low. This approach can probe a $Z^\prime$ boson in the 10 MeV mass range with improved sensitivity. Nearly three orders of magnitude improvement is achievable with a full multi-telescope station system employing a 160 GeV muon beam at CERN, such as in the MUonE experiment. |
| title | Search for light Dark Sectors with GeV Muon Beams |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.08950 |