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arXiv 1104.0307hep-phnucl-th
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矢量介子-重子动力学与共振态的产生

Vector meson-Baryon dynamics and generation of resonances

K. P. Khemchandani, H. Kaneko, H. Nagahiro, A. Hosaka

摘要:

本工作的目的是研究矢量介子-八重态重子相互作用,目的是寻找这种系统中共振的动力学产生。为此,我们考虑的S-,T-,U-通道图以及来自隐藏的局部对称拉格朗日的接触相互作用。我们发现除了s通道之外,所有这些来源的贡献都很重要。通过求解总奇异度为零的系统的耦合通道Bethe Salpeter方程获得的振幅显示了一个同位旋3/2共振,自旋1/2共振和三个同位旋1/2共振的产生:两个自旋3/2,一个自旋1/2。我们分别用$Δ(1900) S_{31}$、$N^* (2080) D_{13}$、$N^* (1700) D_{13}$和$N^*(2090) S_{11}$识别这些共振。

英文摘要:

The purpose of this work is to study vector meson-octet baryon interactions with the aim to find dynamical generation of resonances in such systems. For this, we consider s-, t-, u-channel diagrams along with a contact interaction originating from the hidden local symmetry Lagrangian. We find the contribution from all these sources, except the s-channel, to be important. The amplitudes obtained by solving coupled channel Bethe Salpeter equations for systems with total strangeness zero, show generation of one isospin 3/2, spin 1/2 resonance and three isospin 1/2 resonances: two with spin 3/2 and one with spin 1/2. We identify these resonances with $Δ(1900) S_{31}$, $N^* (2080) D_{13}$, $N^* (1700) D_{13}$, and $N^*(2090) S_{11}$, respectively.

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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