论文标题
来自非局部手性有效理论的质子中海夸克的广义分布
Generalized parton distributions of sea quarks in the proton from nonlocal chiral effective theory
论文作者
论文摘要
我们从非局部协变性手性有效理论中计算质子质子中海夸克的自旋旋转的普遍分布（GPD），包括来自中级状态的单层贡献，具有伪尺度ersons和octet and Octet and Octet and Decupet Baryons。从非本地的拉格朗日人产生了相对论的调节器，其中引入了仪表链路以保证局部规格的不变性，并提供了量规链路的额外图表，以确保电荷和陌生感的保护。从计算出的GPD中获得的零和有限动量转移的海夸克的风味不对称，以及奇怪的形式，结果与现象学提取和晶格QCD相比。
We calculate the spin-averaged generalized parton distributions (GPDs) of sea quarks in the proton at zero skewness from nonlocal covariant chiral effective theory, including one-loop contributions from intermediate states with pseudoscalar mesons and octet and decuplet baryons. A relativistic regulator is generated from the nonlocal Lagrangian where a gauge link is introduced to guarantee local gauge invariance, with additional diagrams from the expansion of the gauge link ensuring conservation of electric charge and strangeness. Flavor asymmetries for sea quarks at zero and finite momentum transfer, as well as strange form factors, are obtained from the calculated GPDs, and results compared with phenomenological extractions and lattice QCD.
