没有PDF的结构函数的下一个领先顺序演变
Tuomas Lappi1,2, Heikki Mäntysaari1,2, Hannu Paukkunen1,2
1Department of Physics, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland.
概括
这项研究使用可观测的结构函数解决了Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) 进化方程. 这种方法提供了一种明确的方法,用于与实验数据比较扰动性量子色态动力学预测.
科学领域:
- 高能粒子物理学 高能粒子物理学
- 量子色态动力学 (QCD) 是一个
- 扰乱性QCD是一种扰乱性QCD.
背景情况:
- 深度不弹性的散射实验探测了子的结构.
- 部分分布函数 (PDF) 传统上用于描述这种结构.
- 分因数尺度和方案依赖性可以在理论预测中引入模两可.
研究的目的:
- 开发和数值地解决DGLAP演化方程直接用于物理,可观测的结构函数.
- 提供一种明确的方法来比较理论预测与高能物理学中的实验数据.
- 调查使用物理基础进行进化方程的优点.
主要方法:
- 制定和数值解决DGLAP演变方程在下一个到领先的顺序.
- 6个物理,可观测的结构函数的直接演变.
- 在物理基础上获得的结果与传统PDF进化结果的比较.
主要成果:
- 在物理结构函数的基础上,DGLAP演化方程已成功地直接解决.
- 在物理基础上表达进化消除了因子化规模和方案依赖.
- 这种方法提供了一个明确的对抗扰乱的QCD预测与实验测量.
结论:
- 直接解决可观测结构函数的DGLAP方程,可以更直接,更明确地与实验数据进行比较.
- 物理基础方法避免了与不可观察的部分分布函数相关的复杂性.
- 这项工作验证了 perturbative Quantum Chromodynamics 中理论预测的新方法.
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