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arXiv 1005.4786hep-ph
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一种计算胶子极化的新方法

A new approach to calculate the gluon polarization

F. Taghavi-Shahri, A. Mirjalili, M. M. Yazdanpanah

摘要:

从极化质子结构函数g1 p(x;Q^2)出发,导出了主方程G(x; Q^2)= x \deltag(x; Q^2).利用拉普拉斯变换技术,我们求解了主方程,得到了质子内部极化胶子的分布。通过对两种不同方法计算结果的精度检验,证实了我们得到了极化胶子分布的正确解。我们表明,在比约肯x和Q^2区域中,对g1 p(x;Q^2)的精确实验知识,是确定该区域极化胶子分布所需要的全部。因此,要确定胶子的极化度\deltag /g,我们只需要得到非极化和极化结构函数(F2 p(x;Q^2)和g1 p(x;Q^2))的精确实验数据。

英文摘要:

We derive the Leading-Order master equation to extract the polarized gluon distribution G(x;Q^2) = x \deltag(x;Q^2) from polarized proton structure function, g1p(x;Q^2). By using a Laplace-transform technique, we solve the master equation and derive the polarized gluon distribution inside the proton. The test of accuracy which are based on our calculations with two different methods confirms that we achieve to the correct solution for the polarized gluon distribution. We show that accurate experimental knowledge of g1p(x;Q^2) in a region of Bjorken x and Q^2, is all that is needed to determine the polarized gluon distribution in that region. Therefore, to determine the gluon polarization \deltag /g,we only need to have accurate experimental data on un-polarized and polarized structure functions (F2p (x;Q^2) and g1p(x;Q^2)).

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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