Study of Λ hypernuclei in the quark mean-field model

Abstract

We extend the quark mean-field model to the study of Λ hypernuclei. Without adjusting parameters, the properties of Λ hypernuclei can be described reasonably well. The small spin–orbit splittings for Λ in hypernuclei are achieved, while the Λ single-particle energies in the present model are slightly underestimated as compared with the experimental values. About 3% deviation from the quark model prediction for the ω– Λ couplings is required in order to reproduce the experimental single-particle energies.