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arXiv 0811.0645hep-ph
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AdS/QCD中J^{ PC }=1^{-+}的混杂奇异介子

Hybrid exotic meson with J^{PC}=1^{-+} in AdS/QCD

Hyun-Chul Kim, Youngman Kim

摘要:

在AdS/QCD模型框架下研究了含$J^{PC}=1^{-+}$的混合奇异介子.对混合奇异介子,引入一个与算符对偶的全息场,得到了其质量的本征值方程。我们用QCD观测量如$ρ$ -介子质量固定所有的自由参数,预言了混合奇异介子的质量。结果表明基态为$1476 \mathrm{MeV}$,第一激发态为$2611 \mathrm{MeV}$.与已有的$π_1(1400)$(即$m_{π_1} = 1351\pm30 \mathrm{MeV}$)的实验数据比较,本文的结果似乎与之定性一致,并预测了$π_1$(1400):$F_{π_1}= 10.6$ MeV的衰变常数。

英文摘要:

We investigate the hybrid exotic meson with $J^{PC}=1^{-+}$ within the framework of an AdS/QCD model. Introducing a holographic field dual to the operator for hybrid exotic meson, we obtain the eigen-value equation for its mass. Fixing all free parameters by QCD observables such as the $ρ$-meson mass, we predict the masses of the hybrid exotic meson. The results turn out to be $1476 \mathrm{MeV}$ for the ground state, and $2611 \mathrm{MeV}$ for the first excited one. Being compared with the existing experimental data for the $π_1(1400)$, which is known to be $m_{π_1} = 1351\pm30 \mathrm{MeV}$, the present result seems to be qualitative in agreement with it. We also predict the decay constant of $π_1$(1400): $F_{π_1}= 10.6$ MeV.

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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