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arXiv 2107.12401hep-phhep-exnucl-exnucl-th
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原子核中的三维成像

Three-dimensional imaging in nuclei

Mishary Alrashed, Daniele Anderle, Zhong-Bo Kang, John Terry, Hongxi Xing

AI总结:

本文首次对原子核中的TMD部分子分布函数和碎裂函数进行全局QCD抽取,利用126个实验数据点量化核介质中的TMD展宽,并为JLab和EIC实验提供预测。

摘要:

我们首次对原子核中的横动量依赖(TMD)部分子分布函数和TMD碎裂函数进行了同时的全局QCD抽取。我们考虑了来自半单举电子-原子核深度非弹性散射和Drell-Yan双轻子产生的世界数据。该数据集总共包含来自HERMES、费米实验室、RHIC和LHC的126个数据点。在次领头阶和次次领头对数精度下工作,我们达到了$χ^2/dof = 1.045$。在这项分析中,我们首次量化了原子核中TMD相对于自由核子中TMD的展宽。我们还为正在进行的JLab 12 GeV计划和未来的EIC测量做出了预测。

英文摘要:

We perform the first simultaneous global QCD extraction of the transverse momentum dependent (TMD) parton distribution functions and the TMD fragmentation functions in nuclei. We have considered the world set of data from semi-inclusive electron-nucleus deep inelastic scattering and Drell-Yan di-lepton production. In total, this data set consists of 126 data points from HERMES, Fermilab, RHIC and LHC. Working at next-to-leading order and next-to-next-to-leading logarithmic accuracy, we achieve a $χ^2/dof = 1.045$. In this analysis, we quantify the broadening of TMDs in nuclei comparing with those in free nucleons for the first time. We also make predictions for the ongoing JLab 12 GeV program and future EIC measurements.

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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