Checking the $^8$Be anomaly with a two-arm electron positron pair spectrometer
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917628413476864 |
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| author | Anh, Tran The Trong, Tran Dinh Krasznahorkay, Attila J. Krasznahorkay, Attila Molnár, József Pintye, Zoltán Viet, Nguyen Ai Nghia, Nguyen The Linh, Do Thi Khanh Hoa, Bui Thi Chung, Le Xuan Anh, Nguyen Tuan |
| author_facet | Anh, Tran The Trong, Tran Dinh Krasznahorkay, Attila J. Krasznahorkay, Attila Molnár, József Pintye, Zoltán Viet, Nguyen Ai Nghia, Nguyen The Linh, Do Thi Khanh Hoa, Bui Thi Chung, Le Xuan Anh, Nguyen Tuan |
| contents | We have repeated the experiment performed recently by Krasznahorkay et al., (Phys. Rev. Lett. 116, 042501 (2016)), which may indicate a new particle called X17 in the literature. In order to get a reliable, and independent result, we used a different type of electron-positron pair spectrometer which have a more simple acceptance/efficiency as a function of the correlation angle, but the other conditions of the experiment were very similar to the published ones. We could confirm the presence of the anomaly measured at the E$_x$=18.15 MeV resonance, and also confirm their absence at the E$_x$=17.6 MeV resonance, and at E$_p$= 800 keV off resonance energies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_11676 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Checking the $^8$Be anomaly with a two-arm electron positron pair spectrometer Anh, Tran The Trong, Tran Dinh Krasznahorkay, Attila J. Krasznahorkay, Attila Molnár, József Pintye, Zoltán Viet, Nguyen Ai Nghia, Nguyen The Linh, Do Thi Khanh Hoa, Bui Thi Chung, Le Xuan Anh, Nguyen Tuan Nuclear Experiment Instrumentation and Detectors We have repeated the experiment performed recently by Krasznahorkay et al., (Phys. Rev. Lett. 116, 042501 (2016)), which may indicate a new particle called X17 in the literature. In order to get a reliable, and independent result, we used a different type of electron-positron pair spectrometer which have a more simple acceptance/efficiency as a function of the correlation angle, but the other conditions of the experiment were very similar to the published ones. We could confirm the presence of the anomaly measured at the E$_x$=18.15 MeV resonance, and also confirm their absence at the E$_x$=17.6 MeV resonance, and at E$_p$= 800 keV off resonance energies. |
| title | Checking the $^8$Be anomaly with a two-arm electron positron pair spectrometer |
| topic | Nuclear Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2401.11676 |