Probing Millicharged Particles at an Electron Beam Dump with Ultralow-Threshold Sensors
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arXiv
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| Auteurs principaux: | , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913715914276864 |
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| author | Essig, Rouven Li, Peiran Liu, Zhen McDuffie, Megan Plestid, Ryan Xu, Hailin |
| author_facet | Essig, Rouven Li, Peiran Liu, Zhen McDuffie, Megan Plestid, Ryan Xu, Hailin |
| contents | We propose to search for millicharged particles produced in high-intensity electron beam dumps using small ultralow-threshold sensors. As a concrete example, we consider a Skipper-CCD placed behind the beam dump in Hall A at Jefferson Lab. We compute the millicharged particle flux, including both electromagnetic cascade and meson productions emanating from an aluminum target. We find that the sensitivity of a modest 2x14 array of Skipper-CCDs can exceed the sensitivity of all existing searches for millicharged particle masses below 1.5 GeV, and is either competitive or world leading when compared to other proposed experiments. Our results demonstrate that small-scale ultralow threshold silicon devices can enhance the reach of accelerator-based experiments, while fitting comfortably within existing experimental halls. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_09652 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing Millicharged Particles at an Electron Beam Dump with Ultralow-Threshold Sensors Essig, Rouven Li, Peiran Liu, Zhen McDuffie, Megan Plestid, Ryan Xu, Hailin High Energy Physics - Phenomenology High Energy Physics - Experiment We propose to search for millicharged particles produced in high-intensity electron beam dumps using small ultralow-threshold sensors. As a concrete example, we consider a Skipper-CCD placed behind the beam dump in Hall A at Jefferson Lab. We compute the millicharged particle flux, including both electromagnetic cascade and meson productions emanating from an aluminum target. We find that the sensitivity of a modest 2x14 array of Skipper-CCDs can exceed the sensitivity of all existing searches for millicharged particle masses below 1.5 GeV, and is either competitive or world leading when compared to other proposed experiments. Our results demonstrate that small-scale ultralow threshold silicon devices can enhance the reach of accelerator-based experiments, while fitting comfortably within existing experimental halls. |
| title | Probing Millicharged Particles at an Electron Beam Dump with Ultralow-Threshold Sensors |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2412.09652 |