自旋结构函数g_1在任意x和Q^2处的综述
Overview of the spin structure function g_1 at arbitrary x and Q^2
摘要：
本文总结了我们关于结构函数g_1的结果，并给出了g_1的非单态分量和单态分量的显式表达式，这些表达式可以在任意x和Q^2处使用。这些表达式结合了著名的DGLAP关于反常维数和系数函数的结果，并对g_1的非单态（单态）分量分别给出了Q^2 -> Q^2 + μ^2的位移和μ/Λ_{QCD}约为10（约为55）。与DGPs相比，这些表达式不需要引入初始部分子密度的奇异参数化。我们还应用我们的结果来描述的实验数据在运动学区域超出了DGSTO的范围。
英文摘要：
In the present paper we summarize our results on the structure function g_1 and present explicit expressions for the non-singlet and singlet components of g_1 which can be used at arbitrary x and Q^2. These expressions combine the well-known DGLAP-results for the anomalous dimensions and coefficient functions with the total resummation of the leading logarithmic contributions and the shift of Q^2 -> Q^2 + μ^2, with μ/Λ_{QCD} approx 10 (approx 55) for the non-singlet (singlet) components of g_1 respectively. In contrast to DGLAP, these expressions do not require the introduction of singular parameterizations for the initial parton densities. We also apply our results to describe the experimental data in the kinematic regions beyond the reach of DGLAP.
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