Julich hyperon-nucleon model revisited

被引：173

作者：

Haidenbauer, J

Meissner, UG

机构：

[1] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany

[2] Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany

来源：

PHYSICAL REVIEW C | 2005年 / 72卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.72.044005

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

A one-boson-exchange model for the hyperon-nucleon (Lambda N,Sigma N) interaction is presented. The model incorporates the standard one boson exchanges of the lowest pseudoscalar and vector meson multiplets with coupling constants fixed by SU(6) flavor symmetry relations. As the main new feature of the model, the contributions in the scalar-isoscalar (sigma) and vector-isovector (rho) exchange channels are now constrained by a microscopic model of correlated pi pi and K (K) over bar exchange. Additional short-ranged ingredients of the model in the scalar-isovector (a(0)) and scalar-isospin-1/2 (kappa) channels are likewise viewed as arising from meson-meson correlations but are treated phenomenologically. With this model a satisfactory reproduction of the available hyperon-nucleon data can be achieved.

引用

页数：19

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