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Comparisons of magnetic charge and axial charge meson cloud distributions in the PCQM

机译:PCQM中磁电荷和轴向电荷介子云分布的比较

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摘要

The meson cloud distributions in r-space are extracted from the nucleon electromagnetic and axial form factors which are derived in the perturbative chiral quark model. The theoretical results indicate that the magnetic charge and axial charge distributions of the three-quark core have the similar distributions in r-space, the magnetic charge distributions of the meson cloud and three-quark core are more or less in the same region and peak at distances of around 0.4 fm, which is in good agreement with the finding of works in the framework of chiral perturbation theory, but the axial charge meson cloud distributes mainly inside the three-quark core.
机译:r空间中的介子云分布是从扰动手性夸克模型中导出的核子电磁和轴向形状因子中提取的。理论结果表明,三夸克核的电荷和轴向电荷分布在r空间上具有相似的分布,介子云和三夸克核的电荷分布在相同的区域和峰值处或多或少。在约0.4?fm的距离内,这与在手性摄动理论框架内的工作发现非常吻合,但是轴向电荷介子云主要分布在三夸克核内部。

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