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arXiv 2010.04584hep-phnucl-th
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$N^*(1895)$的衰变性质

Decay properties of $N^*(1895)$

K. P. Khemchandani, A. Martinez Torres, H. Nagahiro, A. Hosaka

摘要:

核子共振的性质仍在争论中,同时积累了大量的实验数据。在这项工作中,我们重点研究了位于各种介子-重子耦合通道散射区域的负宇称共振$N^*(1895)$,这种动力学对于理解其性质至关重要。为了测试这种强子动力学的相关性,我们详细研究了$N^*(1895)$的衰变性质。我们研究如何一个两极性质的$N^*(1895)$是兼容的,其所观察到的衰减特性。此外,我们发现,共振衰减到涉及$Λ(1405)$和$Σ(1400)$,后者是尚未观察到实验的最终状态。这种衰变过程对于研究上述超子共振的性质是有用的。

英文摘要:

The nature of nucleon resonances is still being debated, while much experimental data are accumulated. In this work, we focus on the negative parity resonance $N^*(1895)$ which is located in the scattering region of various meson-baryon coupled channels, and such dynamics can be crucial in understanding its properties. To test the relevance of such hadron dynamics, we investigate the decay properties of $N^*(1895)$ in detail. We examine how a two pole nature of $N^*(1895)$ is compatible with its observed decay properties. Moreover, we find that the resonance decays into final states involving $Λ(1405)$ and $Σ(1400)$, where the latter is not yet observed experimentally. Such decay processes can be useful to study the properties of the aforementioned hyperon resonances.

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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