论文标题
ADS/QCD软墙模型中的介子中的双part顿相关性：与晶格数据的首次比较
Double parton correlations in mesons within AdS/QCD soft-wall models: a first comparison with lattice data
论文作者
论文摘要
输入双Parton散射（DPS）横截面的双Parton分布函数（DPDF）是编码Hadron的新有趣属性的未知基本数量。在这里，在不同的全息QCD夸克模型中研究了pion dpdfs，以访问其基本功能。在ADS/QCD软壁方法中获得的计算结果已与Pion两电流相关函数的晶格QCD评估的预测进行了比较。目前的分析证实，影响DPDF的双方相关性非常重要，并且无法从广义的Parton分布函数和电磁形构成中直接访问。晶格数据和夸克模型计算之间的比较揭示了乳头中高partononic fock状态的贡献的相关性。然而，通过使用完整的一般过程，首次使用了晶格QCD的结果来估计所谓的$σ_{eff} $的平均值，这是DPS过程的相关实验性。此外，为了做出预测，讨论了$ρ$ Meson DPDF的第一个计算结果。
Double parton distribution functions (dPDFs), entering the double parton scattering (DPS) cross section, are unknown fundamental quantities encoding new interesting properties of hadrons. Here, the pion dPDFs are investigated within different holographic QCD quark models in order to access their basic features. Results of the calculation,s obtained within the AdS/QCD soft-wall approach, have been compared with predictions of lattice QCD evaluations of the pion two-current correlation functions. The present analysis confirms that double parton correlations, affecting dPDFs, are very important and not direct accessible from generalised parton distribution functions and electromagnetic form factors. The comparison between lattice data and quark model calculations unveils the relevance of the contributions of high partonic Fock states in the pion. Nevertheless, by using a complete general procedure, results of lattice QCD have been used, for the first time, to estimate the mean value of the so called $σ_{eff}$, a relevant experimental observable for DPS processes. In addition, the results of the first calculations of the $ρ$ meson dPDFs are discussed in order to make predictions.
