论文标题
手性异常和轻夸克模型中的斜向特性
Chiral anomaly and the pion properties in the light-front quark model
论文作者
论文摘要
我们探讨了QCD的手性对称性与光夸克模型的数值结果之间的联系，分析了亲尖的两点和三点函数。包括轴向矢量耦合以及光Quark模型中的伪尺度耦合，我们讨论了手性异常在描述胎腐衰变常数，Pion-Photon Trantition tormition form formation和pion的电磁型的含义。在限制模型参数时，我们发现手性异常起着关键作用，并且对$ f_ {πγ}（q^2）$的分析在及时区域很重要。我们的结果表明，组成的夸克图片对于以$ q^2 $生长为夸克质量进化效应的低和高$ q^2 $范围有效。
We explore the link between the chiral symmetry of QCD and the numerical results of the light-front quark model, analyzing both the two-point and three-point functions of the pion. Including the axial-vector coupling as well as the pseudoscalar coupling in the light-front quark model, we discuss the implication of the chiral anomaly in describing the pion decay constant, the pion-photon transition form factor and the electromagnetic form factor of the pion. In constraining the model parameters, we find that the chiral anomaly plays a critical role and the analysis of $F_{πγ}(Q^2)$ in timelike region is important. Our results indicate that the constituent quark picture is effective for the low and high $Q^2$ ranges implementing the quark mass evolution effect as $Q^2$ grows.
