标题： 自对偶的齐次胶子场和介子的电磁结构 显示英文标题

标题： Self-dual homogeneous gluon field and electromagnetic structure of pion

摘要： 介子的转换形式因子、衰变宽度和电荷形式因子是在基于非微扰QCD真空可以由均匀的(反)自对偶胶子场表征的假设下的感应非定域夸克电流模型中计算的。 显示，在该模型中负责手征对称性破缺和轻介子谱的夸克自旋与真空胶子场的相互作用，也可以在形成转换形式因子和两光子衰变宽度中起决定性作用。 讨论了在大动量传递情况下背景胶子场中夸克环的渐近行为。 显示英文摘要

摘要： The transition form factor, decay width and charge form factor of pion are calculated within the model of induced nonlocal quark currents based on the assumption that the nonperturbative QCD vacuum can be characterized by a homogeneous (anti-)self-dual gluon field. It is shown that the interaction of the quark spin with the vacuum gluon field, being responsible in the model for the chiral symmetry breaking and the spectrum of light mesons, can also play the decisive role in forming the transition form factor and two-photon decay width. Asymptotic behavior of quark loops in the presence of the background gluon field for large momentum transfer is discussed.