Abstract
We propose a novel method for producing very-neutron-rich hypernuclei and corresponding resonance states by employing charge-exchange reactions via pp(\(^{12}\)C, \(^{12}\)N \(K^+\))n\(\varLambda \) with single-charge-exchange and ppp(\(^{9}\)Be, \(^{9}\)C \(K^+\))nn\(\varLambda \) with double-charge-exchange, both of which produce \(\varLambda K^+\) in a target nucleus. The feasibility of producing very-neutron-rich hypernuclei using the proposed method was analysed by applying an ultra-relativistic quantum molecular dynamics model to a \(^6\)Li + \(^{12}\)C reaction at 2 A GeV. The yields of very-neutron-rich hypernuclei, signal-to-background ratios, and background contributions were investigated. The proposed method is a powerful tool for studying very-neutron-rich hypernuclei and resonance states with a hyperon for experiments employing the Super-FRS facility at FAIR and HFRS facility at HIAF.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited. [Authors’ comment: This is a simulation study with transport model calculations and those analyses, and there are no experimental data associated. All model calculation tools are explained with references and our procedures are described also in details.]
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Acknowledgements
The authors thank H.J. Ong of the Institute of Modern Physics and S. Terashima of Beihang University for their fruitful discussions of charge-exchange reactions. The authors also thank J. Yoshida of RIKEN and Tohoku University for commenting on the manuscript.
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Communicated by Alexandre Obertelli.
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Saito, T.R., Ekawa, H. & Nakagawa, M. Novel method for producing very-neutron-rich hypernuclei via charge-exchange reactions with heavy ion projectiles. Eur. Phys. J. A 57, 159 (2021). https://doi.org/10.1140/epja/s10050-021-00470-3
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DOI: https://doi.org/10.1140/epja/s10050-021-00470-3