论文标题
Lattice QCD的乳头上的双parton分布
Double parton distributions in the pion from lattice QCD
论文作者
论文摘要
我们使用其梅林矩与两个局部电流的亲元矩阵元素之间的关系对乳杆中的双部分分布进行了晶格研究。对于几乎所有相关的wick收缩，都可以获得良好的统计信号。我们研究了乳头中两个部分的空间分布的相关性，以及涉及Parton极化的相关性。我们观察到的模式显着取决于夸克质量。我们研究了一个假设，即双parton分布将大约将其分解成单个Parton分布的卷积。
We perform a lattice study of double parton distributions in the pion, using the relationship between their Mellin moments and pion matrix elements of two local currents. A good statistical signal is obtained for almost all relevant Wick contractions. We investigate correlations in the spatial distribution of two partons in the pion, as well as correlations involving the parton polarisation. The patterns we observe depend significantly on the quark mass. We investigate the assumption that double parton distributions approximately factorise into a convolution of single parton distributions.
