I briefly summarize recent results for nucleon and Δ(1232) electromagnetic, axial and transition form factors in the Dyson–Schwinger approach. The calculation of the current diagrams from the quark–gluon level enables a transparent discussion of common features such as: the implications of dynamical chiral symmetry breaking and quark orbital angular momentum, the timelike structure of the form factors, and their interpretation in terms of missing pion-cloud effects.

中文翻译：

---

从夸克和胶子到重子形状因子

我简要总结了 Dyson-Schwinger 方法中核子和 Δ(1232) 电磁、轴向和跃迁形状因子的最新结果。从夸克-胶子水平计算当前图可以透明地讨论共同特征，例如：动力学手征对称性破缺和夸克轨道角动量的含义，形状因子的时间结构，以及它们在缺失方面的解释介子云效应。