Electromagnetic form factors of the nucleon are studied within the framework of the Perturbative Chiral Quark Model (PCQM). In a previous analysis of the nucleon electromagnetic form factors, the quark propagator used in the calculation was truncated to quark in the ground state only. The attempt to include the excited states quark propagator contribution to the neutron was performed but not on the proton. Therefore, in this work, we try to be consistent in the nucleonic sector by including the excited states quark propagator up to the second excited states to study the electromagnetic form factors of the nucleon. Our results are in good agreement with experimental data and show the significance of the contribution of the quark excited states propagator to the electromagnetic properties of the nucleon.

在微扰手性夸克模型（PCQM）的框架内研究了核子的电磁形状因数。在先前对核子电磁形状因数的分析中，计算中使用的夸克传播子被截断为仅在基态下为夸克。试图包括激发态夸克的传播对中子的贡献，但没有在质子上进行。因此，在这项工作中，我们试图通过将激发态夸克传播剂包含到第二激发态中来研究核子的电磁形状因数，从而在核子学领域保持一致。我们的结果与实验数据非常吻合，并表明了夸克激发态传播子对核子电磁特性的贡献的重要性。