论文标题
晶格上的核子中的双方分布：风味干扰效应
Double parton distributions in the nucleon on the lattice: Flavor interference effects
论文作者
论文摘要
可以通过计算晶格上的四点函数来获得有关双方分布（DPD）的信息。我们通过考虑干扰效果W.R.T.继续研究了质子质子的第一次DPD梅林时刻。夸克风味。在模拟中，我们使用$ n_f = 2 + 1 $合奏，逆耦合$β= 3.4 $，$m_π= 355〜 \ Mathrm {Mev} $和$ M_K = 441〜 \ Mathrm {mev} $。结果将转换为$ \ overline {\ mathrm {ms}} $ - 在比例尺$μ= 2〜 \ mathrm {gev} $处的方案。我们分析了所考虑的梅林矩对夸克极化的依赖性，并将我们的结果与夸克模型预测进行了比较。
Information about double parton distributions (DPDs) can be obtained by calculating four-point functions on the lattice. We continue our study on the first DPD Mellin moment of the unpolarized proton by considering interference effects w.r.t. the quark flavor. In our simulation we employ an $n_f = 2 + 1$ ensemble with inverse coupling $β= 3.4$, and pseudoscalar masses of $m_π= 355~\mathrm{MeV}$ and $m_K = 441~\mathrm{MeV}$. The results are converted to the $\overline{\mathrm{MS}}$-scheme at the scale $μ= 2~\mathrm{GeV}$. We analyze the dependence of the considered Mellin moments on the quark polarization and compare our results with quark model predictions.
