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. and Zhukov, M. V. (2022). Observation of a correlated free four-neutron system. Nature, 606 (7915). BERLIN: NATURE PORTFOLIO. ISSN 1476-4687

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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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Duer, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Aumann, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gernhaeuser, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Panin, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paschalis, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rossi, D. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Achouri, N. L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ahn, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baba, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bertulani, C. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boehmer, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boretzky, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caesar, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chiga, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Corsi, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cortina-Gil, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Douma, C. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dufter, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elekes, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Feng, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fernandez-Dominguez, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Forsberg, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fukuda, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gasparic, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ge, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gheller, J. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gibelin, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gillibert, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hahn, K. I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Halasz, Z.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Harakeh, M. N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hirayama, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Holl, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Inabe, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isobe, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kahlbow, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kalantar-Nayestanaki, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kobayashi, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kondo, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koerper, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Koseoglou, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kubota, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kuti, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, P. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lehr, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lindberg, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marques, F. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Masuoka, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Matsumoto, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mayer, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Miki, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Monteagudo, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nakamura, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nilsson, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Obertelli, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Orr, N. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Otsu, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Park, S. Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parlog, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Potlog, P. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reichert, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Revel, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saito, A. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sasano, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scheit, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schindler, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimoura, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Simon, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stuhl, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Suzuki, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Symochko, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Takeda, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tanaka, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Togano, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tomai, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Toernqvist, H. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tscheuschner, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Uesaka, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wagner, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yamada, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yang, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yang, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yang, Z. H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yasuda, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yoneda, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zanetti, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zenihiro, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhukov, M. V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-697633
DOI: 10.1038/s41586-022-04827-6
Journal or Publication Title: Nature
Volume: 606
Number: 7915
Date: 2022
Publisher: NATURE PORTFOLIO
Place of Publication: BERLIN
ISSN: 1476-4687
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
TETRANEUTRON; SCATTERING; SEARCHMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/69763

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