Gamma-ray spectroscopy of hypernuclei: Recent results and future plans

H. Tamura, K. Hosomi, T. Koike, Y. Ma, M. Mimori, K. Miwa, K. Shirotori, M. Ukai

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13 Citations (Scopus)


A series of hypernuclear γ-ray spectroscopy experiments using a germanium detector array, Hyperball, have accumulated precise data on various p-shell Λ hypernuclei. Recently, 12ΛC and 11ΛB were studied at KEK using the (π+, K+ γ) reaction, and a transition from a directly-populated spin-flip state, 16ΛO(2-), was observed in BNL E930 data. It is discussed whether the spin-dependent ΛN interaction parameters determined from previous experiments can consistently explain other γ spectroscopy data. At the J-PARC facility, further hypernuclear γ-ray spectroscopy experiments are planned, particularly to measure the g factor of a Λ in a nucleus from a spin-flip B (M 1) value and to investigate the ΛN interaction more in detail.

Original languageEnglish
Pages (from-to)73-83
Number of pages11
JournalNuclear Physics A
Issue number1-4
Publication statusPublished - 2008 May 15


  • Gamma transitions and level energies
  • Hypernuclei
  • Hyperon-nucleon interactions


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