论文标题
颜色依赖性双方分布的两层演化内核
Two-loop evolution kernels for colour dependent double parton distributions
论文作者
论文摘要
双方分布的描述中的一个关键成分是它们的比例依赖性。如果将每个单独的parton的颜色求和，则分布与普通Parton分布相同的DGLAP内核演变。如果两个部分相关，这将不再正确。我们在强耦合中以近代领先的顺序计算相关的内核，对于非极化或纵向极化的部分以及横向极化的夸克。
A key ingredient in the description of double parton distributions is their scale dependence. If the colour of each individual parton is summed over, the distributions evolve with the same DGLAP kernels as ordinary parton distributions. This is no longer true if the two partons are colour correlated. We compute the relevant kernels for this case at next-to-leading order in the strong coupling, for unpolarised or longitudinally polarised partons and for transversely polarised quarks.
