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Observation of a correlated free four-neutron system
- Title
- Observation of a correlated free four-neutron system
- Authors
- Duer, M.; Aumann, T.; Gernhaeuser, R.; Panin, V.; Paschalis, S.; Rossi, D. M.; Achouri, N. L.; Ahn, D.; Baba, H.; Bertulani, C. A.; Boehmer, M.; Boretzky, K.; Caesar, C.; Chiga, N.; Corsi, A.; Cortina-Gil, D.; Douma, C. A.; Dufter, F.; Elekes, Z.; Feng, J.; Fernandez-Dominguez, B.; Forsberg, U.; Fukuda, N.; Gasparic, I.; Ge, Z.; Gheller, J. M.; Gibelin, J.; Gillibert, A.; Hahn, K. I.; Halasz, Z.; Harakeh, M. N.; Hirayama, A.; Holl, M.; Inabe, N.; Isobe, T.; Kahlbow, J.; Kalantar-Nayestanaki, N.; Kim, D.; Kim, S.; Kobayashi, T.; Kondo, Y.; Koerper, D.; Koseoglou, P.; Kubota, Y.; Kuti, I.; Li, P. J.; Lehr, C.; Lindberg, S.; Liu, Y.; Marques, F. M.; Masuoka, S.; Matsumoto, M.; Mayer, J.; Miki, K.; Monteagudo, B.; Nakamura, T.; Nilsson, T.; Obertelli, A.; Orr, N. A.; Otsu, H.; Park, S. Y.; Parlog, M.; Potlog, P. M.; Reichert, S.; Revel, A.; Saito, A. T.; Sasano, M.; Scheit, H.; Schindler, F.; Shimoura, S.; Simon, H.; Stuhl, L.; Suzuki, H.; Symochko, D.; Takeda, H.; Tanaka, J.; Togano, Y.; Tomai, T.; Toernqvist, H. T.; Tscheuschner, J.; Uesaka, T.; Wagner, V.; Yamada, H.; Yang, B.; Yang, L.; Yang, Z. H.; Yasuda, M.; Yoneda, K.; Zanetti, L.; Zenihiro, J.; Zhukov, M. V.
- Ewha Authors
- 한인식
- SCOPUS Author ID
- 한인식
- Issue Date
- 2022
- Journal Title
- NATURE
- ISSN
- 0028-0836
1476-4687
- Citation
- NATURE vol. 606, no. 7915
- Publisher
- NATURE PORTFOLIO
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- A long-standing question in nuclear physics is whether chargeless nuclear systems can exist. To our knowledge, only neutron stars represent near-pure neutron systems, where neutrons are squeezed together by the gravitational force to very high densities. The experimental search for isolated multi-neutron systems has been an ongoing quest for several decades(1), with a particular focus on the four-neutron system called the tetraneutron, resulting in only a few indications of its existence so far(2-4), leaving the tetraneutron an elusive nuclear system for six decades. Here we report on the observation of a resonance-like structure near threshold in the four-neutron system that is consistent with a quasi-bound tetraneutron state existing for a very short time. The measured energy and width of this state provide a key benchmark for our understanding of the nuclear force. The use of an experimental approach based on a knockout reaction at large momentum transfer with a radioactive high-energy He-8 beam was key.
- DOI
- 10.1038/s41586-022-04827-6
- Appears in Collections:
- 사범대학 > 과학교육과 > Journal papers
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