论文标题
从$^1 $ h，$^2 $ h，$^3 $ h和$^3 $ He Data中的框架和Parton分布中的外壳效果
Off-shell effects in bound nucleons and parton distributions from $^1$H, $^2$H, $^3$H and $^3$He data
论文作者
论文摘要
我们报告了新的全球QCD分析的结果，包括$^1 $ h，$^2 $ h，$^3 $ h和$^3 $ HE的目标。核校正是根据核卷积方法和外壳结合核子的处理。负责修饰结构核的结构函数（SF）的校正（OS）校正与质子Parton分布函数（PDFS）和高扭（HT）项一起限制。我们研究了OS校正的质子内核差异，并讨论了我们对SF比率$ f_2^n/f_2^p $的预测以及质子中相应的PDF比$ d/u $，以及它们与HT项的基本处理和OS校正的相关性。特别是，我们发现最近的马拉松数据与质子和中子的相对OS校正一致。
We report the results of a new global QCD analysis including deep-inelastic scattering data off $^1$H, $^2$H, $^3$H, and $^3$He targets. Nuclear corrections are treated in terms of a nuclear convolution approach with off-shell bound nucleons. The off-shell (OS) corrections responsible for the modification of the structure functions (SFs) of bound nucleons are constrained in a global fit along with the proton parton distribution functions (PDFs) and the higher-twist (HT) terms. We investigate the proton-neutron difference for the OS correction and discuss our predictions for the SF ratio $F_2^n/F_2^p$ and the corresponding PDF ratio $d/u$ in the proton, as well as their correlations with the underlying treatment of the HT terms and of the OS corrections. In particular, we find that the recent MARATHON data are consistent with equal relative OS corrections for both the proton and the neutron.
