https://doi.org/10.1051/epjconf/202227101010
Hypernuclear production spectroscopy with an extended shell model
1 Liberal Arts and Sciences, Nippon Institute of Technology, 345-8501 Miyashiro, Saitama, Japan
2 Research Center for Nuclear Physics, Osaka University, 567-0047 Ibaraki, Osaka, Japan
3 Laboratory of Physics, Osaka Electro-Communication University, 572-8530 Neyagawa, Japan
4 Faculty of Medicine, Miyazaki University, 889-1692 Miyazaki, Japan
5 Faculty of Education, Gifu University, 501-1193 Gifu, Japan
* e-mail: aumeya@nit.ac.jp
Published online: 9 November 2022
The (e, e’K+) reaction experiments with several nuclear targets performed recently at the Jefferson laboratory have provided high-resolution spectroscopic data. Among others, the 10B(e, e’K+) 10ΛBe reaction data are particularly interesting due to new appearance of extra sub-peaks which seem difficult to be explained within the conventional model with the p-shell nuclear naturalparity configurations. To describe this novel hypernuclear structure, we have extended the model space by introducing the new configurations which include unnatural-parity nuclear core-excited states. This configuration mixing successfully explains the sub-peaks in the 10B(e, e’K+) reaction data. For adjacent hypernuclei with A = 9–11, we show the DWIA spectra of (K−, π−), (π+, K+) and (γ, K+) reactions that are calculated within the extended model in a consistent way. We discuss the theoretical spectra of 9,10ΛBe and 11ΛB production reactions.
© The Authors, published by EDP Sciences, 2022
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