Spectroscopy of medium-heavy Λ hypernuclei via the (π+,K+) 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

研究成果: Article査読

160 被引用数 (Scopus)


Excitation energy spectra of 89ΛY, 51ΛV, and 12ΛC have been measured via the (π+, K+) reaction by using the SKS spectrometer at the K6 beam line in the KEK 12-GeV Proton Synchrotron. In the 89ΛY 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 51ΛV spectrum, a similar structure to that of 89ΛY was observed. In the 12ΛC 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.

ジャーナルPhysical Review C - Nuclear Physics
出版ステータスPublished - 2001 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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