Influence of Spin-Orbit Force on Nucleon-Nucleon Scattering in the Quark Delocalization Colour Screening Model  

作　　者：黄虹霞 陈灵芝 庞侯荣 平加伦 王凡 

机构地区：[1]Department of Physics, Nanjing Normal University, Nanjing 210097 [2]Department of Physics, Nanjing University, Nanjing 210093 [3]Department of Physics, Southeast University, Nanjing 210094

出　　处：《Chinese Physics Letters》2008年第5期1617-1620,共4页中国物理快报（英文版）

基　　金：Supported by the National Science Foundation of China under Grant Nos 90503011, 10775072, 10375030 and 10505006.

摘　　要：The symmetric spin-orbit interactions of one-gluon-exchange and confinement are included in the nucleon-nucleon phase shift calculation in the framework of quark delocalization eolour screening model. The spin-orbit interaction has little influence on D wave phase shift. For the triplet P waves, aPT is in good agreement with the experimental data and 3pLs is attractive but not strong enough, whereas 3 Pc is too strongly repulsive. Our results indicate that the symmetric spin-orbit interaction of one-gluon-exchange and confinement potential cannot give a good description of the triplet P wave phase shifts. More sophisticated considerations, the delocalization depending on the relative orientation between two cluster, might be needed to improve the description of P-wave NN interaction.The symmetric spin-orbit interactions of one-gluon-exchange and confinement are included in the nucleon-nucleon phase shift calculation in the framework of quark delocalization eolour screening model. The spin-orbit interaction has little influence on D wave phase shift. For the triplet P waves, aPT is in good agreement with the experimental data and 3pLs is attractive but not strong enough, whereas 3 Pc is too strongly repulsive. Our results indicate that the symmetric spin-orbit interaction of one-gluon-exchange and confinement potential cannot give a good description of the triplet P wave phase shifts. More sophisticated considerations, the delocalization depending on the relative orientation between two cluster, might be needed to improve the description of P-wave NN interaction.

关 键 词：INTERMEDIATE RANGE ATTRACTION BARYON-BARYON INTERACTION FLIP-FLOP MODEL MESON-EXCHANGE CLUSTER MODEL NN POTENTIALS CONFINEMENT TENSOR 

分 类 号：O57[理学—粒子物理与原子核物理]