相对论夸克模型中重子的磁矩

MAGNETIC MOMENTS OF BARYONS IN RELATIVISTIC QUARK MODELS

在总结静态夸克模型对重子磁矩描述的基础上 ,用相对论夸克模型对重子磁矩进行了计算 ,结果表明 ,在中心力场近似下 ,相对论夸克模型中重子的磁矩与单个夸克磁矩间的关系与静态夸克模型中完全相同 ,二者对已有实验都能提供较好的描述 .这一结果表明 ,静态夸克模型对重子磁矩描述的成功 ,并不说明可用非相对论近似描述重子内夸克运动 .

After a brief summary of the description of baryon’s magnetic moments in non relativistic model,we calculated the baryon’s magnetic moments in a relativistic quark model.The results show that,in the approximate case of central field,the relation between the magnetic moments of baryons and those of the quarks is completely the same in relativistic quark model as that in non relativistic model.Both can give a good description of the experimental data.This shows that the success of static quark model in describing the baryons’ magnetic moments does not means that the non relativistic approximation is a good approximation in describing the motion of quark in a baryon.