Gamma-ray spectroscopy of hypernuclei - present and future

H. Tamura, K. Hosomi, S. Bufalino, N. Chiga, P. Evtoukhovitch, A. Feliciello, R. Honda, T. Koike, Y. Ma, K. Miwa, A. Sasaki, Y. Sasaki, K. Shirotori, K. Tanida, Z. Tsamalaidze, M. Ukai, T. O. Yamamoto, S. B. Yang

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17 Citations (Scopus)

Abstract

Recent results and future directions of the γ-ray spectroscopy of Λ hypernuclei are discussed. A further analysis of the last KEK experiment (E566) has revealed a new γ transition in 12ΛC at 6048keV (preliminary), which is ascribed to the M1(13-→11-) transition. At J-PARC, studies will be extended from p-shell to s-shell and sd-shell hypernuclei. In the first part of the J-PARC E13 experiment, we will measure the 4ΛHe(1 +0 +) transition to study charge-symmetry breaking in the ΛN interaction and investigate the 19ΛF hypernucleus to study ΛN spin-spin interaction further using one of the sd-shell hypernuclei. In the second part of E13, we will precisely measure the spin-flip B(M1) value for the 7ΛLi(3/2 + → 1/2 +) transition. Beyond E13, we plan to study impurity effects by observing possible changes in nuclear deformation caused by the presence of a Λ in sd-shell hypernuclei, as well as to investigate various heavier Λ hypernuclei in order to precisely determine the energies of Λ single-particle orbits.

Original languageEnglish
Pages (from-to)99-108
Number of pages10
JournalNuclear Physics A
Volume914
DOIs
Publication statusPublished - 2013 Sep

Keywords

  • Impurity effect
  • J-PARC
  • Λ hypernuclei
  • ΛN interaction
  • γ-Ray spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Tamura, H., Hosomi, K., Bufalino, S., Chiga, N., Evtoukhovitch, P., Feliciello, A., Honda, R., Koike, T., Ma, Y., Miwa, K., Sasaki, A., Sasaki, Y., Shirotori, K., Tanida, K., Tsamalaidze, Z., Ukai, M., Yamamoto, T. O., & Yang, S. B. (2013). Gamma-ray spectroscopy of hypernuclei - present and future. Nuclear Physics A, 914, 99-108. https://doi.org/10.1016/j.nuclphysa.2013.03.014