[Formula Presented] hypernucleus studied with the [Formula Presented] reaction

H. Kohri, S. Ajimura, H. Hayakawa, T. Kishimoto, K. Matsuoka, S. Minami, Y. S. Miyake, T. Mori, K. Morikubo, E. Saji, A. Sakaguchi, Y. Shimizu, M. Sumihama, R. E. Chrien, M. May, P. Pile, A. Rusek, R. Sutter, P. M. Eugenio, G. FranklinP. Khaustov, K. Paschke, B. P. Quinn, R. A. Schumacher, J. Franz, T. Fukuda, H. Noumi, H. Outa, L. Gan, L. Tang, L. Yuan, J. Nakano, T. Tamagawa, K. Tanida, R. Sawafta, H. Tamura, H. Akikawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The [Formula Presented] hypernucleus was studied by measuring [Formula Presented] rays in coincidence with the [Formula Presented] reaction. [Formula Presented] rays from the [Formula Presented] and [Formula Presented] states, which are the partners of the spin-orbit doublet states with a predominant configuration of [Formula Presented] to the ground state were measured. The splitting of the states was found to be [Formula Presented] This value is 20–30 times smaller than that of single particle states in nuclei around this mass region. The [Formula Presented] state appeared higher in energy, as in normal nuclei. The value gives new insight into the [Formula Presented] interaction. The excitation energies of the [Formula Presented] and [Formula Presented] states were obtained as [Formula Presented] and [Formula Presented] respectively. We also observed [Formula Presented] rays from the [Formula Presented] state, which has a [Formula Presented] configuration, to the ground state in [Formula Presented] The excitation energy of the [Formula Presented] state was obtained as [Formula Presented] Nuclear [Formula Presented] rays with energies of 4.438 and 15.100 MeV had similar yields, which suggests that a quasifree knockout of a [Formula Presented] particle is dominant in highly excited regions.

Original languageEnglish
Pages (from-to)9
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number3
Publication statusPublished - 2002


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