First observation of the AN tensor interaction

Shu Hua Zhou, Jing Zhou, Qiu Ying Meng, S. Ajimura, H. Akikawa, D. E. Alburger, A. Banu, R. E. Chrien, G. B. Franklin, J. Franz, O. Hashimoto, T. Hayakawa, H. Hotchi, K. Imai, T. Kishimoto, M. May, D. J. Millener, S. Minami, Y. Miura, T. MiyoshiK. Mizunuma, T. Nagae, S. N. Nakamura, K. Nakazawa, Y. Okayasu, P. Pile, B. P. Quinn, A. Rusek, Y. Sato, R. Sutter, H. Takahashi, L. Tang, H. Tamura, K. Tanida, M. Ukai, L. Yuan

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In a Λ16O γ-ray spectroscopy experiment with HYPERBALL, two γ-ray transitions from the 6.6MeV excited 12- state to both ground-states spin-doublet members 11- and 0- have been observed. The measured ground-state doublet spacing is 26.4 ± 1.6(stat) ± 0.5(syst) keV. Thus a small but nonzero strength of the tensor interaction between a A and a nucleon is deduced to be T = + 0.03 MeV. The excitation energy of the 12- state is also determined to be 6561.7 ± 1.1(stat) ± 1.7(syst) keV.

Original languageEnglish
Pages (from-to)627-631
Number of pages5
JournalKao Neng Wu Li Yu Ho Wu Li/High Energy Physics and Nuclear Physics
Issue number7
Publication statusPublished - 2005 Jul


  • Hyper-nuclei
  • ΛN tensor interaction
  • γ-ray spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)


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