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Lu, HF; Meng, J; Zhang, SQ; Zhou, SG; Lu, HF , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.
Neutron halos in hypernuclei
KeywordMean-field Theory Hartree-bogoliubov Theory Lambda-hypernuclei Weak Decay Double Hyperfragment Nuclear Systems Strangeness Particle Excess Sigma
AbstractProperties of single-Lambda and double-Lambda hypernuclei for even-N Ca isotopes ranging from the proton dripline to the neutron dripline are studied using the relativistic continuum Hartree-Bogoliubov theory with a zero-range pairing interaction. Compared with ordinary nuclei, the addition of one or two Lambda-hyperons lowers the Fermi level. The predicted neutron dripline nuclei are, respectively, Ca-75(Lambda) and Ca-76(2Lambda) as the additional attractive force provided by the Lambda-N interaction shifts nuclei from outside to inside the dripline. Therefore, the last bound hypernuclei have two more neutrons than the corresponding ordinary nuclei. Based on the analysis of two-neutron separation energies, neutron single-particle energy levels,the contribution of continuum and nucleon density distribution, giant halo phenomena due to the pairing correlation, and the contribution from the continuum are suggested to exist in Ca hypernuclei similar to those that appear in ordinary Ca isotopes.
Subject AreaPhysics
Indexed BySCI
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Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorLu, HF , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.
Recommended Citation
GB/T 7714
Lu, HF,Meng, J,Zhang, SQ,et al. Neutron halos in hypernuclei[J]. EUROPEAN PHYSICAL JOURNAL A,2003,17(1):19-24.
APA Lu, HF,Meng, J,Zhang, SQ,Zhou, SG,&Lu, HF , Peking Univ, Sch Phys, Beijing 100871, Peoples R China..(2003).Neutron halos in hypernuclei.EUROPEAN PHYSICAL JOURNAL A,17(1),19-24.
MLA Lu, HF,et al."Neutron halos in hypernuclei".EUROPEAN PHYSICAL JOURNAL A 17.1(2003):19-24.
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