论文标题
使用宙斯数据研究质子Parton分布功能在高X上的研究
Study of proton parton distribution functions at high x using ZEUS data
论文作者
论文摘要
在X的较大值下，质子的Parton分布函数（PDF）受到限制，并且不同的全局拟合之间存在很大差异。宙斯协作已经发布了这种高X的数据，但尚未在PDF提取中使用。提出了一种用于比较基于不同PDF集的预测与宙斯数据中观察到的事件数量的技术。它应用于将最常用的PDF的预测与高比约克X的ZEUS数据进行比较。 PDF预测观察到的结果的能力有广泛的变化。讨论了将未来PDF提取的宙斯高X数据包括在内的方案。
At large values of x the parton distribution functions (PDFs) of the proton are poorly constrained and there are considerable variations between different global fits. Data at such high x have already been published by the ZEUS Collaboration, but not yet used in PDF extractions. A technique for comparing predictions based on different PDF sets to the observed number of events in the ZEUS data is presented. It is applied to compare predictions from the most commonly used PDFs to published ZEUS data at high Bjorken x. A wide variation is found in the ability of the PDFs to predict the observed results. A scheme for including the ZEUS high-x data in future PDF extractions is discussed.
