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arXiv 0805.4589hep-phhep-lat
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手征夸克模型中π介子的广义矢量形状因子

Generalized vector form factors of the pion in a chiral quark model

Wojciech Broniowski

摘要:

在Pauli-Villars正则化的Nambu-Jona-Lasinio模型中计算了π介子的广义矢量形状因子,它与广义部分子分布函数的矩有关.最低的时刻(电磁和引力形状因子)进行比较,最近的晶格数据,公平的协议。高阶矩的预测也。着重讨论了手征夸克模型中广义形状因子的相关特征,并强调了高阶GFF的QCD演化的作用。

英文摘要:

Generalized vector form factors of the pion, related to the moments of the generalized parton distribution functions, are evaluated in the Nambu--Jona-Lasinio model with the Pauli-Villars regularization. The lowest moments (the electromagnetic and the gravitational form factors) are compared to recent lattice data, with fair agreement. Predictions for higher-order moments are also made. Relevant features of the generalized form factors in the chiral quark models are highlighted and the role of the QCD evolution for the higher-order GFFs is stressed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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