Quark-model baryon-baryon interactions and their applications to few-body systems
The SU6 quark-model baryon-baryon interaction by the Kyoto-Niigata group is reviewed with an emphasis on the unknown hyperon-nucleon interactions, especially, the (E)N interaction. With a newly developed framework to derive the baryon-octet (Bs) α interactions, we have examined Aα, ∑α and (E)α central and LS potentials predicted by our models fss2 and FSS through the G-matrix calculations in symmetric nuclear matter. We have obtained a reasonable Aα potential, comparable to the ones from the effective AN forces. The Aα LS potential by FSS is consistent with the very small spin-orbit splitting of 9ΛBe, experimentally observed. The ∑α potential is repulsive due to the very strong repulsion in the isospin I =3/2 3S1 ∑N channel, which is induced from the Pauli principle at the quark level. A similar strong isospin dependence of the (E)N interaction implies that (E)α central potential may not be strongly attractive, merely having an attraction of less than 5 MeV at the surface region.
Y.Fujiwara Y.Suzuki C.Nakamoto M.Kohno K.Miyagawa
Department of Physics, Kyoto University, Kyoto 606-8502, Japan Department of Physics, and Graduate School of Science and Technology,Niigata University, Niigata 950 Suzuka College of Technology, Suzuka 510-0294, Japan Physics Division, Kyushu Dental College, Kitakyushu 803-8580, Japan Department of Applied Physics, Okayama Science University, Okayama 700-0005, Japan
国际会议
The International Workshop on Strangeness Nuclear Phusics 2006(国际奇异性核物理研讨会)
湖南张家界
英文
1-9
2006-09-05（万方平台首次上网日期，不代表论文的发表时间）