论文标题

质子中光夸克和古夸的parton分布

Parton distributions of light quarks and antiquarks in the proton

论文作者

Chang, Lei, Gao, Fei, Roberts, Craig D.

论文摘要

用于质子的Poincaré-Covariant波函数的代数ANSATZ,其中包括标量和伪型diquark相关性,用于计算质子价,SEA和胶水分布函数(DFS)。关于当代数据,质子中的材料伪diquark成分是对中子蛋白质结构函数比率的解释所必需的。并且在Gluon分裂功能中的Pauli封闭效果适度,足以解释质子的轻夸克反物质不对称。与Pion DFS相比,所有可识别的Parton类携带的光动量分数都是相同的。另一方面,越高的时刻不同。了解这些特征可能会提供见解,从而解释Nambu-Goldstone玻色子和看似不太复杂的哈子之间的区别。

An algebraic Ansatz for the proton's Poincaré-covariant wave function, which includes both scalar and pseudovector diquark correlations, is used to calculate proton valence, sea, and glue distribution functions (DFs). Regarding contemporary data, a material pseudovector diquark component in the proton is necessary for an explanation of the neutron-proton structure function ratio; and a modest Pauli blocking effect in the gluon splitting function is sufficient to explain the proton's light-quark antimatter asymmetry. In comparison with pion DFs, the light-front momentum fractions carried by all identifiable parton classes are the same; on the other hand, the higher moments are different. Understanding these features may provide insights that explain distinctions between Nambu-Goldstone bosons and seemingly less complex hadrons.

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