Spectroscopy of Λ hypernuclei

O. Hashimoto, H. Tamura

Research output: Contribution to journalReview articlepeer-review

469 Citations (Scopus)


Spectroscopy of Λ hypernuclei has recently become one of the most valuable tools for the experimental investigation of strangeness nuclear physics. Following the pioneering (π+, K+) reaction spectroscopy experiments at the BNL AGS in the 1970's, excitation spectra have been measured using this reaction for a wide variety of Λ hypernuclei with the superconducting kaon spectrometer (SKS) at the KEK 12 GeV PS. More recently, Λ hypernuclear spectroscopy was carried out for the first time using the (e, e K+) reaction and the continuous electron beam at the Thomas Jefferson National Accelerator Facility (Jefferson Lab). This reaction will be further explored using a new high-resolution kaon spectrometer (HKS) installed at Jefferson Lab. At the same time, precision γ-ray spectroscopy with a germanium detector array (Hyperball) has been successfully performed for p-shell Λ hypernuclei at the KEK 12 GeV PS and at the BNL AGS. Quantitative information on Λ hypernuclear structure was obtained and the strengths of the spin-dependent Λ-nucleon interaction in the p-shell region were derived. In this review article, the progress of Λ hypernuclear spectroscopy is described and future prospects are presented.

Original languageEnglish
Pages (from-to)564-653
Number of pages90
JournalProgress in Particle and Nuclear Physics
Issue number2
Publication statusPublished - 2006 Oct


  • (e, e K) reaction
  • (π, K) reaction
  • Reaction spectroscopy
  • Λ hypernuclei
  • γ-ray spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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