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arXiv 1107.4584hep-ph
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QCD中核子的张量形状因子

Tensor form factors of nucleon in QCD

Guray Erkol, Altug Ozpineci

摘要:

我们提取的等矢量张量核子形状因子,它发挥了重要的作用,在理解的横向自旋结构的核子时,通过夸克螺旋翻转广义部分子分布的一阶矩。我们采用光锥QCD求和规则来计算三个张量的形状因子$H_T$、$E_T$和$\tilde{H}_T$。在低动量转移区和高动量转移区,我们的结果与其他方法的结果吻合得很好。

英文摘要:

We extract the isovector tensor nucleon form factors, which play an important role in understanding the transverse spin structure of the nucleon when related to the quark helicity-flip generalized parton distributions via their first moments. We employ the light-cone QCD sum rules to leading order in QCD and include distribution amplitudes up to twist 6 in order to calculate the three tensor form factors $H_T$, $E_T$ and $\tilde{H}_T$. Our results agree well with those from other approaches in the low and high momentum-transfer regions.

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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