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arXiv 0901.2504hep-ph
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Parton分布

Parton Distributions

M. Dittmar, S. Forte, A. Glazov, S. Moch, G. Altarelli, J. Anderson, R. D. Ball, G. Beuf, M. Boonekamp, H. Burkhardt, F. Caola, M. Ciafaloni, D. Colferai, A. Co… 展开作者

M. Dittmar, S. Forte, A. Glazov, S. Moch, G. Altarelli, J. Anderson, R. D. Ball, G. Beuf, M. Boonekamp, H. Burkhardt, F. Caola, M. Ciafaloni, D. Colferai, A. Cooper-Sarkar, A. de Roeck, L. Del Debbio, J. Feltesse, F. Gelis, J. Grebenyuk, A. Guffanti, V. Halyo, J. I. Latorre, V. Lendermann, Gang Li, L. Motyka, T. Petersen, A. Piccione, V. Radescu, M. Rogal, J. Rojo, C. Royon, G. P. Salam, D. Salek, A. M. Stasto, R. S. Thorne, M. Ubiali, J. A. M. Vermaseren, A. Vogt, G. Watt, C. D. White

摘要:

我们提供了一个评估的各种问题的最先进的实验测量,现象学方法和理论结果有关的部分子分布函数(PDF)及其不确定性的测定,提供不同的现有方法和结果的基准,鉴于其在LHC物理应用的具体目标。我们讨论了高阶修正,我们审查和比较不同的方法来小的xrefromation,我们评估可能的相关性的部分子饱和度在HERA的PDFS的测定及其可能的研究在大型强子对撞机过程。我们提供了各种基准的PDF适合,与研究问题的误差传播,非高斯的不确定性,PDF的功能形式的选择,并从不同的实验和不同的过程中的数据组合的具体目的。本文研究了HERA(ZEUS-H1)结构函数数据的组合效应、它们对PDF不确定性的影响以及它们对标准蜡烛过程计算的影响,并回顾了HERA最近的F_L测定。最后,我们比较和评估在LHC的光度测量方法和PDF对它们的影响。

英文摘要:

We provide an assessment of the state of the art in various issues related to experimental measurements, phenomenological methods and theoretical results relevant for the determination of parton distribution functions (PDFs) and their uncertainties, with the specific aim of providing benchmarks of different existing approaches and results in view of their application to physics at the LHC. We discuss higher order corrections, we review and compare different approaches to small x resummation, and we assess the possible relevance of parton saturation in the determination of PDFS at HERA and its possible study in LHC processes. We provide various benchmarks of PDF fits, with the specific aim of studying issues of error propagation, non-gaussian uncertainties, choice of functional forms of PDFs, and combination of data from different experiments and different processes. We study the impact of combined HERA (ZEUS-H1) structure function data, their impact on PDF uncertainties, and their implications for the computation of standard candle processes, and we review the recent F_L determination at HERA. Finally, we compare and assess methods for luminosity measurements at the LHC and the impact of PDFs on them.

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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