Novel method for producing very-neutron-rich hypernuclei via charge-exchange reactions with heavy ion projectiles

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 + )nΛ with single-charge-exchange and ppp( 9 Be, 9 C K + )nnΛ with double-charge-exchange, both of which produce ΛK + 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