摘要
在手征SU（3）夸克集团模型下,通过共振群方法（RGM）计算了双∧超核^6∧∧He,^5∧∧He,^5∧∧H,^4∧∧He和^4∧∧H的结合能.结果表明,假定双∧超核具有双∧集团和壳心核集团构成的两集团结构,得到的^6∧∧He超核的结合能与实验值基本吻合,表明手征SU（3）夸克集团模型不仅能较好地描述重子谱、N-N和Y-N相互作用及轻∧超核的结合能,也能较好地描述Y-Y相互作用及双∧超核的结合能.使用相同的模型参数,计算了轻双∧超核^5∧∧He,^A5∧∧H,^4∧∧He和^4∧∧H的结合能,指出了它们存在的可能性.
In the framework of the resonating group method, the binding energies of double lambda hypernuclei ^6∧∧He, ^5∧∧He,^5∧∧H, ^4∧∧He, and ^4∧∧H are calculated in the chiral SU（3） quark model. In the two-cluster approximation in which a two-lambda cluster and a core nuclei are considered, one finds that the resultant binding energy of doublelambda hypernuclei ^6∧∧He is in good agreement with the experimental data. It means that the chiral SU（3） quark model can well-describe the spectrum of baryon, the interactions of N-N, Y-N, and the binding energies of light lambda hpernuclei, as well as the interaction of Y-Y and the binding energy of double-lambda hypernucleus. With the same set of parameters, we calculate the binding energies of light double-lambda hypernuclei ^5∧∧He, ^5∧∧H, ^4∧∧He, and ^4∧∧H and discuss the possibilities of these states .
出处
《高能物理与核物理》
CSCD
北大核心
2006年第11期1074-1077,共4页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10147202
10465001
10375090
10475042
10475089
10435080)
中国科学院知识创新重大项目(KJCX-2S-WN02)
中国科学院高能物理研究所创新项目(U529)
广西自然科学基金(桂科自0339035)资助~~
关键词
超核
共振群
YN相互作用
结合能
hypernuclei, resonating group method, YN interaction, binding energy
