Search for sub-millicharged particles at J-PARC
Abstract We studied the feasibility of an experiment searching for sub-millicharged particles (χs) using 30 GeV proton fixed-target collisions at J-PARC. The detector is composed of two layers of stacked scintillator bars and PMTs and is proposed to be installed 280 m from the target. The main backg...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP05(2021)031 |
| _version_ | 1818643777087078400 |
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| author | Jeong Hwa Kim In Sung Hwang Jae Hyeok Yoo |
| author_facet | Jeong Hwa Kim In Sung Hwang Jae Hyeok Yoo |
| author_sort | Jeong Hwa Kim |
| collection | DOAJ |
| description | Abstract We studied the feasibility of an experiment searching for sub-millicharged particles (χs) using 30 GeV proton fixed-target collisions at J-PARC. The detector is composed of two layers of stacked scintillator bars and PMTs and is proposed to be installed 280 m from the target. The main background is a random coincidence between two layers due to dark counts in PMTs, which can be reduced to a negligible level using the timing of the proton beam. With N POT = 1022 which corresponds to running the experiment for three years, the experiment provides sensitivity to χs with the charge down to 5 × 10 −5 in m χ < 0.2 GeV/c2 and 8 × 10 −4 in m χ < 1.6 GeV/c2. This is the regime largely uncovered by previous experiments. We also explored a few detector designs to achieve optimal sensitivity to χs. The photoelectron yield is the main driver, but the sensitivity does not have a strong dependence on detector configuration in the sub-millicharge regime. |
| first_indexed | 2024-12-17T00:04:20Z |
| format | Article |
| id | doaj.art-b7135c87c86445dfafa88c2bf59d8014 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-17T00:04:20Z |
| publishDate | 2021-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-b7135c87c86445dfafa88c2bf59d80142022-12-21T22:11:00ZengSpringerOpenJournal of High Energy Physics1029-84792021-05-012021511110.1007/JHEP05(2021)031Search for sub-millicharged particles at J-PARCJeong Hwa Kim0In Sung Hwang1Jae Hyeok Yoo2Korea UniversityKorea UniversityKorea UniversityAbstract We studied the feasibility of an experiment searching for sub-millicharged particles (χs) using 30 GeV proton fixed-target collisions at J-PARC. The detector is composed of two layers of stacked scintillator bars and PMTs and is proposed to be installed 280 m from the target. The main background is a random coincidence between two layers due to dark counts in PMTs, which can be reduced to a negligible level using the timing of the proton beam. With N POT = 1022 which corresponds to running the experiment for three years, the experiment provides sensitivity to χs with the charge down to 5 × 10 −5 in m χ < 0.2 GeV/c2 and 8 × 10 −4 in m χ < 1.6 GeV/c2. This is the regime largely uncovered by previous experiments. We also explored a few detector designs to achieve optimal sensitivity to χs. The photoelectron yield is the main driver, but the sensitivity does not have a strong dependence on detector configuration in the sub-millicharge regime.https://doi.org/10.1007/JHEP05(2021)031Fixed target experimentsDark matter |
| spellingShingle | Jeong Hwa Kim In Sung Hwang Jae Hyeok Yoo Search for sub-millicharged particles at J-PARC Journal of High Energy Physics Fixed target experiments Dark matter |
| title | Search for sub-millicharged particles at J-PARC |
| title_full | Search for sub-millicharged particles at J-PARC |
| title_fullStr | Search for sub-millicharged particles at J-PARC |
| title_full_unstemmed | Search for sub-millicharged particles at J-PARC |
| title_short | Search for sub-millicharged particles at J-PARC |
| title_sort | search for sub millicharged particles at j parc |
| topic | Fixed target experiments Dark matter |
| url | https://doi.org/10.1007/JHEP05(2021)031 |
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