Scalar ΛN and ΛΛ interaction in a chiral unitary approach

被引：15
|
作者：
Sasaki, K. [1 ]
Oset, E.
Vicente Vacas, M. J.
机构：
[1] Ctr Mixto Univ Valencia, Dept Fis Teor, CSIC, Valencia, Spain
[2] Ctr Mixto Univ Valencia, IFIC, CSIC, Valencia, Spain
来源：
PHYSICAL REVIEW C | 2006年 / 74卷 / 06期
关键词：
D O I：
10.1103/PhysRevC.74.064002
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：
We study the central part of the Lambda N and Lambda Lambda potential by considering the correlated and uncorrelated two-meson exchange in addition to the omega exchange contribution. The correlated two-meson exchange is evaluated within a chiral unitary approach. We find that a short-range repulsion is generated by the correlated two-meson potential, which also produces an attraction in the intermediate-distance region. The uncorrelated two-meson exchange produces a sizable attraction in all cases that is counterbalanced by the omega exchange contribution.
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页数：11
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