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arXiv 1801.06299nucl-thhep-ph
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封闭Nambu-Jona-Lasino模型中的K介子结构

Kaon Structure in the confining Nambu-Jona-Lasino Model

Parada. T. P. Hutauruk

摘要:

利用Nambu-Jona-Lasinio模型,利用模拟夸克禁闭的本征时间正则化方法,计算了K+介子在类空区的弹性电磁形状因子和价夸克分布函数.在这个模型框架中,非微扰方面的动力学信息是由夸克传播子和束缚态振幅通过Bethe-Salpeter方程得到的。我们发现,在较高的$Q^2$下,K介子形状因子和价夸克分布函数的计算结果与已有的K介子数据以及微扰QCD预言定性地吻合得很好.

英文摘要:

The elastic electromagnetic form factors in the space-like region and valence quark distribution functions for the K+ meson are calculated using the confining Nambu-Jona-Lasinio model with the help of the proper-time regularization scheme, which simulates quark confinement. In this model framework, the dynamics information on the nonperturbative aspects is obtained from quark propagators and bound state amplitudes via Bethe-Salpeter equations. We found that the results on the kaon form factors and valence quark distribution functions are qualitatively in excellent agreement with the existing kaon data as well as the perturbation QCD prediction at higher $Q^2$.

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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