摘要
在组态混合下，通过解三夸克系统的薛定谔方程，研究了Ｎ和△的能谱．考虑的夸克－夸克相互作用位，除通常的微扰单胶子交换位外，还包括两个具有非微扰效应的位，即具有色屏蔽效应的禁闭位和由手征破缺产生的。和σ交换位．所得到的重子谱表明非微扰效应改进了理论与实验的符合程度，从而给出了Ｎ和△体系较好的描述．
We study N and △ spectra by solving Schrodinger equation for the three quark system in the mixture of configurations. Besides the perturbative effect of usual one-gluon exchange, the nonperturbative effects of both color screening predicted by the LGT calculation and pion(sigma) exchange due to the chiral symmery breaking are also included in present quark-quark potential. The agreement of the baryonic spectra obtained with the experiment is improved.
出处
《高能物理与核物理》
CSCD
北大核心
1996年第10期937-944,共8页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
关键词
重子谱
色屏蔽
手征场
baryonic spectrum, color screen, chiral field.
