四夸克成分对奇异夸克偶素能谱的影响

The Effect of Four-Quark Components on the s Spectrum

本文利用3P0模型,计算了四夸克成分对s系统能谱的影响,并重新调整参数以符合实验数据.计算结果表明四夸克成分对s能谱有较大的影响,对于激发态,其效应难以被模型参数吸收,计算结果也表明四夸克成分不大于15%,因此更多夸克的成分可以忽略.

The effect of four-quark component on the ss spectrum is studied in the framework of 3Po model. The parameters of the chiral quark model are re-adjusted to fit the experimental data. The results show that the effect of four- quark component is rather large, and the effect cannot be absorbed by model parameters even for low-lying states. Our calculations also show that the percentage of four-quark components in the ss states is smaller than 15%, so the higher Foek components can be ignored.