中文

$\Xi^-$-$^{14}$N 系统库仑辅助核束缚态的观测

核实验 2021-02-17 v3

摘要

在 J-PARC 进行的乳胶-计数器混合实验中,观测到一个 Ξ\Xi^- 吸收事件,其衰变为双单-Λ\Lambda 超核。运动学计算使得能够唯一地将反应过程识别为 Ξ+14\Xi^{-} + ^{14}N  Λ10\ \rightarrow\ ^{10}_\LambdaBe + Λ5^5_\LambdaHe。对于 Ξ\Xi^--14^{14}N 系统中 Ξ\Xi^{-} 超子的束缚能,推导出值为 1.27±0.211.27 \pm 0.21 MeV。Ξ\Xi^- 的能级很可能是一个核 1p1p 态,这表明弱的 ΞN{\Xi}N-ΛΛ\Lambda\Lambda 耦合。

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引用

@article{arxiv.2010.14317,
  title  = {Observation of Coulomb-assisted nuclear bound state of $\Xi^-$-$^{14}$N system},
  author = {S. H. Hayakawa and K. Agari and J. K. Ahn and T. Akaishi and Y. Akazawa and S. Ashikaga and B. Bassalleck and S. Bleser and H. Ekawa and Y. Endo and Y. Fujikawa and N. Fujioka and M. Fujita and R. Goto and Y. Han and S. Hasegawa and T. Hashimoto and T. Hayakawa and E. Hayata and K. Hicks and E. Hirose and M. Hirose and R. Honda and K. Hoshino and S. Hoshino and K. Hosomi and S. H. Hwang and Y. Ichikawa and M. Ichikawa and K. Imai and K. Inaba and Y. Ishikawa and H. Ito and K. Ito and W. S. Jung and S. Kanatsuki and H. Kanauchi and A. Kasagi and T. Kawai and M. H. Kim and S. H. Kim and S. Kinbara and R. Kiuchi and H. Kobayashi and K. Kobayashi and T. Koike and A. Koshikawa and J. Y. Lee and T. L. Ma and S. Y. Matsumoto and M. Minakawa and K. Miwa and A. T. Moe and T. J. Moon and M. Moritsu and Y. Nagase and Y. Nakada and M. Nakagawa and D. Nakashima and K. Nakazawa and T. Nanamura and M. Naruki and A. N. L. Nyaw and Y. Ogura and M. Ohashi and K. Oue and S. Ozawa and J. Pochodzalla and S. Y. Ryu and H. Sako and S. Sato and Y. Sato and F. Schupp and K. Shirotori and M. M. Soe and M. K. Soe and J. Y. Sohn and H. Sugimura and K. N. Suzuki and H. Takahashi and T. Takahashi and T. Takeda and H. Tamura and K. Tanida and A. M. M. Theint and K. T. Tint and Y. Toyama and M. Ukai and E. Umezaki and T. Watabe and K. Watanabe and T. O. Yamamoto and S. B. Yang and C. S. Yoon and J. Yoshida and M. Yoshimoto and D. H. Zhang and Z. Zhang},
  journal= {arXiv preprint arXiv:2010.14317},
  year   = {2021}
}