Subtraction of Spurious Centre-of-Mass Motion in Quark Delocalization and Colour Screening Model  

作　　者：陈灵芝 庞侯荣 黄虹霞 平加伦 王凡 

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

出　　处：《Chinese Physics Letters》2007年第9期2529-2532,共4页中国物理快报（英文版）

基　　金：Supported by the National Science Foundation of China under grant number 90503011 and 10375030.

摘　　要：The quark delocalization colour screening model provides an alternative approach for the NN intermediate range attraction, which is attributed to the σ meson exchange in the meson exchange and chiral quark model. However the quark delocalization induces the spurious centre-of-mass motion （CMM）. A method for subtracting the spurious CMM proposed before is applied to the new scattering calculation. The subtraction of the spurious CMM results in an additional NN attraction. The NN scattering data are refitted by a fine tune of the colour screening constant.The quark delocalization colour screening model provides an alternative approach for the NN intermediate range attraction, which is attributed to the σ meson exchange in the meson exchange and chiral quark model. However the quark delocalization induces the spurious centre-of-mass motion （CMM）. A method for subtracting the spurious CMM proposed before is applied to the new scattering calculation. The subtraction of the spurious CMM results in an additional NN attraction. The NN scattering data are refitted by a fine tune of the colour screening constant.

关 键 词：INTERMEDIATE RANGE ATTRACTION HYPERFINE INTERACTIONS MESON-EXCHANGE SCATTERING BARYONS NN POTENTIALS 

分 类 号：O56[理学—原子与分子物理]