Novel Method for Producing Very-Neutron-rich Hypernuclei Via Charge-Exchange Reactions with Heavy Ion Projectiles

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.