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arXiv 0709.1284hep-ph
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规范理论中的自旋和轨道angular momentum:QCD和核子自旋结构

Spin and orbital angular momentum in gauge theories (II): QCD and nucleon spin structure

X. S. Chen, X. F. Lü, W. M. Sun, F. Wang, T. Goldman

摘要:

与本文(I)中QED的规范不变自旋和轨道角动量的构造相平行,本文给出了QCD的一个类似但非平凡的解。得到了夸克和胶子的规范不变自旋和轨道角动量算符。这在以前被认为是一项不可能完成的任务,并为理解核子自旋结构开辟了一条更有希望的途径。

英文摘要:

Parallel to the construction of gauge invariant spin and orbital angular momentum for QED in paper (I) of this series, we present here an analogous but non-trivial solution for QCD. Explicitly gauge invariant spin and orbital angular momentum operators of quarks and gluons are obtained. This was previously thought to be an impossible task, and opens a more promising avenue towards the understanding of the nucleon spin structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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