Abstract
The relativistic mean field theory with the Green's function method is extended to study hypernuclei. Taking the hypernucleus as an example, the single-particle resonant states for hyperons are investigated by analyzing the density of states, and the corresponding energies and widths are given. Different behaviors are observed for the resonant states, i.e., the distributions of the very narrow and states are very similar to bound states while those of the wide and states are like scattering states. Besides, the impurity effect of hyperons on the single-neutron resonant states is investigated. For most of the resonant states, both the energies and widths decrease with adding more hyperons due to the attractive interaction. Finally, the energy level structure of hyperons in the Ca hypernucleus isotopes with mass number are studied; obvious shell structure and small spin-orbit splitting are found for the single- spectrum.
- Received 16 March 2017
DOI:https://doi.org/10.1103/PhysRevC.95.054318
©2017 American Physical Society