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arXiv 0907.0443hep-ph
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走向小x射线化的DIS现象学

Towards small x resummed DIS phenomenology

Juan Rojo, Guido Altarelli, Richard D. Ball, Stefano Forte

摘要:

本文报道了深度非弹性结构函数的小尺度量化现象学的最新进展。我们计算小的x-加权K-因子与现实的PDF和估计它们的影响,在HERA运动学区域。这些K因子与固定阶NLO结果平滑匹配,近似地再现了小的x坐标PDF分析的效果。典型的修正被发现是相同的顺序的NNLO的,也就是说,百分之几,但相反的符号。这些结果意味着,重新校正可能与全球PDF分析相关,特别是对于非常精确的组合HERA数据集。

英文摘要:

We report on recent progress towards quantitative phenomenology of small x resummation of deep-inelastic structure functions. We compute small x resummed K-factors with realistic PDFs and estimate their impact in the HERA kinematical region. These K-factors, which match smoothly to the fixed order NLO results, approximately reproduce the effect of a small x resummed PDF analysis. Typical corrections are found to be of the same order as the NNLO ones, that is, a few percent, but with opposite sign. These results imply that resummation corrections could be relevant for a global PDF analysis, especially with the very precise combined HERA dataset.

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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