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arXiv 1104.0798hep-ph
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三胶子对半包含深度非弹性散射中单自旋不对称性贡献的主公式

Master Formula for the Three-Gluon Contribution to Single Spin Asymmetry in Semi-Inclusive Deep Inelastic Scattering

Yuji Koike, Kazuhiro Tanaka, Shinsuke Yoshida

摘要:

我们导出了核子中三胶子关联函数对半包含深度非弹性散射的扭转3单自旋相关截面ep^ \uparrow \to eDX的贡献的“主公式”。这是一个类似的公式已知的软胶子极贡献的夸克胶子关联函数在各种过程中诱导的扩展。我们的主公式将有三个胶子参与的部分子干涉过程简化为γ^*g \to c \bar{c}散射的Born截面,揭示了扭曲3单自旋不对称性背后的新结构,大大简化了实际计算.一个可能的扩展到高阶校正进行了讨论。

英文摘要:

We derive a "master formula" for the contribution of the three-gluon correlation function in the nucleon to the twist-3 single-spin-dependent cross section for semi-inclusive deep-inelastic scattering, ep^\uparrow\to eDX. This is an extension of the similar formula known for the so-called soft-gluon-pole contribution induced by the quark-gluon correlation function in a variety of processes. Our master formula reduces the relevant interfering partonic subprocess with the participation of the three gluons to the Born cross sections for the γ^*g\to c\bar{c} scattering, which reveals the new structure behind the twist-3 single spin asymmetry and simplifies the actual calculation greatly. A possible extension to higher order corrections is also discussed.

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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