Spectroscopy of medium-heavy Λ hypernuclei via the [Formula Presented] reaction

H. Hotchi, T. Nagae, H. Outa, H. Noumi, M. Sekimoto, T. Fukuda, H. Bhang, Y. D. Kim, J. H. Kim, H. Park, K. Tanida, O. Hashimoto, H. Tamura, T. Takahashi, Y. Sato, T. Endo, S. Satoh, J. Nishida, T. Miyoshi, T. SaitohT. Kishimoto, A. Sakaguchi, S. Ajimura, Y. Shimizu, T. Mori, S. Minami, M. Sumihama, R. Sawafta, L. Tang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Excitation energy spectra of [Formula Presented] and [Formula Presented] have been measured via the [Formula Presented] reaction by using the SKS spectrometer at the K6 beam line in the KEK 12-GeV Proton Synchrotron. In the [Formula Presented] spectrum, obtained with an energy resolution of 1.65 MeV (FWHM) and in the highest statistics so far, we have succeeded in clearly observing a characteristic fine structure in heavy Λ hypernuclear systems and precisely obtaining a series of Λ single-particle energies in the very wide excitation energy range of more than 20 MeV, for the first time. Also in the [Formula Presented] spectrum, a similar structure to that of [Formula Presented] was observed. In the [Formula Presented] spectrum, new core-excited states were clearly resolved thanks to the best energy resolution of 1.45 MeV so far achieved by using the SKS spectrometer.

Original languageEnglish
Pages (from-to)15
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number4
Publication statusPublished - 2001

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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