[Xu, Renli; Ren, Zhongzhou] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China; [Wu, Chen] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; [Ren, Zhongzhou] Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China; [Ren, Zhongzhou] Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要:
In this work, we conduct a study on the properties of single-Lambda hypernuclei in the relativistic mean-field theory with the parameter set FSU, where the isoscalar-isovector coupling has been included to soften the symmetry energy. In our model, a tensor coupling between omega and Lambda is employed, which is found to be essential in obtaining the small spin-orbit interaction in single-Lambda hypernuclei. Our calculated values of Lambda single-particle energies are in good agreement with the known experimental data. As a comparison to other existing parameter sets, calculations are also carried out by using parameterizations such as NL3 and NL3*. The results show that the parameter set FSU is as successful as those of NL3 and NL3* in terms of reproducing the properties of single-Lambda hypernuclei.
Xu, RL,Wu, C,Ren, ZZ. Single-A hypernuclei in the relativistic mean-field theory with parameter set FSU[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2012,39(8):85107.
