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arXiv 1004.4392hep-ph
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全息QCD中的奇异介子形状因子

Strange meson form factors in holographic QCD

H. Z. Sang, Xiao-Hong Wu

摘要:

本文在全息QCD模型中考虑了奇异矢量、轴矢量和赝标介子的电磁形状因子。我们发现,带电K介子的电荷半径与实验一致,而带电π介子的电荷半径比实验值稍小,这与其它硬壁全息QCD模型的计算结果一致。荷电rho和$K^\ast$的电荷半径与最近的Dyson-Schwinger方程计算定量一致。我们还给出了类空和类时区域中矢量、轴矢量和赝标介子的电形状因子。我们得到的荷电K介子形状因子与实验数据相符合。

英文摘要:

We consider the electromagnetic form factors of strange vector, axial vector and pseudoscalar mesons in a holographic QCD model. We find the charge radius of charged kaon agrees with the experiment, while the charge radius of charged pion is a little bit smaller than the experimental value, as obtained in other calculations in the hard-wall holographic QCD models. The charge radii of charged rho and $K^\ast$ quantitatively agree with a recent Dyson-Schwinger equation calculation. We also present the electric form factors of vector, axial vector and pseudoscalar mesons in both space-like and time-like regions. We find the charged kaon form factor is in agreement with the experiment data.

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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