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Prog. Theor. Phys. Supplement No. 185 (2010) pp. 106-151

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S = -1 Hypernuclear Structure

Emiko Hiyama,1 Masayasu Kamimura,2 Yasuo Yamamoto,3 Toshio Motoba4 and Thomas A. Rijken5

1RIKEN Nishina Center, RIKEN, Wako 351-0198, Japan
2Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
3Physics Section, Tsuru University, Tsuru 402-8555, Japan
4Laboratory of Physics, Osaka Electro-Communication University, Neyagawa 572-8530, Japan
5IMAPP University of Nijmegen, Nijmegen, The Netherlands

(Received July 12, 2010)

Abstract:

The structure of light hypernuclei with strangeness S = -1 is investigated with the three- and four-body cluster model and the Gaussian Expansion method (GEM). Interesting phenomena such as shrinkage effect of the core nucleus and the halo and skin structure due to the glue-like role of Λ particle are demonstrated from the study of structure of 6ΛHe, 7ΛLi and 13ΛC. Precise three- and four-body cluster calculation of 7ΛHe, 7ΛLi, 7ΛBe, 9ΛBe and 13ΛC provide us with information about ΛN interaction such as spin-spin, spin-orbit, charge symmetry breaking term, etc., by comparing with the recent experimental data. Precise four-body calculation taking NNNΛ and NNNΣ for 4ΛH and 4ΛHe are performed and the role of Λ-Σ conversion and the size of the virtual Σ component in 4ΛH and 4ΛHe are discussed.


URL : http://ptp.ipap.jp/link?PTPS/185/106/
DOI : 10.1143/PTPS.185.106

[ Full Text PDF : FREE ACCESS (1095K) ] Citation:

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