Energy spectra in p-shell Λ hypernuclei and ^19_ΛF and spin-dependent Λ N interactions

Energy spectra of 0s-orbit Λ states in p-shell Λ hypernuclei (^A_Λ Z) and those in ^19_ΛF are studied with the microscopic cluster model and antisymmetrized molecular dynamics using the G-matrix effective Λ N (Λ NG) interactions. Spin-dependent terms of the ESC08a version of the Λ NG interactions are tested and phenomenologically tuned to reproduce observed energy spectra in p-shell ^A_Λ Z. Spin-dependent contributions of the Λ N interactions to spin-doublet splitting and excitation energies are discussed. Energy spectra for unobserved excited states in p-shell ^A_Λ Z and ^19_ΛF are predicted with the modified Λ NG interactions.