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arXiv 1402.4349hep-ph
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小x值时部分子密度的Q2-evolution。H1和ZEUS F2组合数据的有效标度

Q2-evolution of parton densities at small x values. Effective scale for combined H1 and ZEUS F2 data

A. V. Kotikov, B. G. Shaikhatdenov

摘要:

我们使用贝塞尔启发的行为的结构函数F2在小x,获得一个平坦的初始条件下的DGstrom演化方程。我们固定了耦合常数的标度,从而消除了次领先近似阶处反常双介子的奇异部分。该方法与强耦合常数的“冻结”和解析修正一起用于研究最近发表的结构函数F2的精确组合H1和ZEUS数据。

英文摘要:

We use the Bessel-inspired behavior of the structure function F2 at small x, obtained for a flat initial condition in the DGLAP evolution equations. We fix the scale of the coupling constant, which eliminates the singular part of anomalous dimesnions at the next-to-leading order of approximation. The approach together with the "frozen" and analytic modifications of the strong coupling constant is used to study the precise combined H1 and ZEUS data for the structure function F2 published recently.

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