Observation of Coulomb-Assisted Nuclear Bound State of Xi(-) -N-14 System

Observation of Coulomb-Assisted Nuclear Bound State of Xi(-) -N-14 System

In an emulsion-counter hybrid experiment performed at J-PARC, a Xi(-) absorption event was observed which decayed into twin single-Lambda hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as Xi(-) +N-14 -> Be-10(Lambda) + He-5(Lambda). For the binding ene...

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Veröffentlicht in:Physical review letters 2021-02, Vol.126 (6), Article 062501
Hauptverfasser: Hayakawa, S. H., Agari, K., Ahn, J. K., Akaishi, T., Akazawa, Y., Ashikaga, S., Bassalleck, B., Bleser, S., Ekawa, H., Endo, Y., Fujikawa, Y., Fujioka, N., Fujita, M., Goto, R., Han, Y., Hasegawa, S., Hashimoto, T., Hayakawa, T., Hayata, E., Hicks, K., Hirose, E., Hirose, M., Honda, R., Hoshino, K., Hoshino, S., Hosomi, K., Hwang, S. H., Ichikawa, Y., Ichikawa, M., Imai, K., Inaba, K., Ishikawa, Y., Ito, H., Ito, K., Jung, W. S., Kanatsuki, S., Kanauchi, H., Kasagi, A., Kawai, T., Kim, M. H., Kim, S. H., Kinbara, S., Kiuchi, R., Kobayashi, H., Kobayashi, K., Koike, T., Koshikawa, A., Lee, J. Y., Ma, T. L., Matsumoto, S. Y., Minakawa, M., Miwa, K., Moe, A. T., Moon, T. J., Moritsu, M., Nagase, Y., Nakada, Y., Nakagawa, M., Nakashima, D., Nakazawa, K., Nanamura, T., Naruki, M., Nyaw, A. N. L., Ogura, Y., Ohashi, M., Oue, K., Ozawa, S., Pochodzalla, J., Ryu, S. Y., Sako, H., Sato, S., Sato, Y., Schupp, F., Shirotori, K., Soe, M. M., Soe, M. K., Sohn, J. Y., Sugimura, H., Suzuki, K. N., Takahashi, H., Takahashi, T., Takeda, T., Tamura, H., Tanida, K., Theint, A. M. M., Tint, K. T., Toyama, Y., Ukai, M., Umezaki, E., Watabe, T., Watanabe, K., Yamamoto, T. O., Yang, S. B., Yoon, C. S., Yoshida, J., Yoshimoto, M., Zhang, D. H., Zhang, Z.
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Sprache:eng
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Physics, Multidisciplinary
Science & Technology
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Zusammenfassung:In an emulsion-counter hybrid experiment performed at J-PARC, a Xi(-) absorption event was observed which decayed into twin single-Lambda hypernuclei. Kinematic calculations enabled a unique identification of the reaction process as Xi(-) +N-14 -> Be-10(Lambda) + He-5(Lambda). For the binding energy of the Xi(-) hyperon in the Xi(-) -N-14 system a value of 1.27 +/- 0.21 MeV was deduced. The energy level of Xi(-) is likely a nuclear 1p state which indicates a weak Xi N-Lambda Lambda coupling.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.126.062501