arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1301.6754hep-ph
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质子部分子结构测定的进展

Progress in the Determination of the Partonic Structure of the Proton

Stefano Forte, Graeme Watt

摘要:

我们回顾了当前的艺术水平,在确定核子的部分子结构,表示在部分子分布函数(PDF),并探讨在高能轻子-强子和强子-强子碰撞,我们评估其影响当前的精密对撞机现象学,特别是在大型强子对撞机(LHC)。我们回顾了PDF确定的理论基础:截面的方式表示的PDF使用微扰QCD因式分解和演化,用于从实验数据中提取PDF的方法,以及不同的物理过程可以用来约束不同的PDF的方式。我们总结了目前的知识PDF和准确性的限制,目前需要的强子对撞机过程的计算,特别是在大型强子对撞机。我们讨论了目前的主要来源的理论和现象学的不确定性,以及在未来的发展方向,对他们的减少。

英文摘要:

We review the current state of the art in the determination of the parton substructure of the nucleon, as expressed in terms of parton distribution functions (PDFs), and probed in high-energy lepton-hadron and hadron-hadron collisions, and we assess their implications for current precision collider phenomenology, in particular at the Large Hadron Collider (LHC). We review the theoretical foundations of PDF determination: the way cross sections are expressed in terms of PDFs using perturbative QCD factorization and evolution, the methodology used to extract PDFs from experimental data, and the way in which different physical processes can be used to constrain different PDFs. We summarize current knowledge of PDFs and the limitations in accuracy currently entailed for the computation of hadron collider processes, in particular at the LHC. We discuss the current main sources of theoretical and phenomenological uncertainties, and the direction of progress towards their reduction in the future.

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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