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arXiv · 2203.03747

On Lowest Lying $\frac{1}{2}^-$ Octet Baryons

Chang Chen·Wen-Qi Niu·Han-Qing Zheng
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Abstract

The recently proposed $N^*(890)$ $1/2^-$ baryon is studied in a flavor $SU(3)$ scheme with $K$ matrix unitarization, by fitting to low energy cross section and phase shift data. It is found that $N^*(890)$ co-exists with low lying poles in other channels, which have been extensively discussed in the literature, though they belong to different octets, in the $SU(3)$ limit. Hence the existence of $N^*(890)$ is further verified.

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Chang Chen, Wen-Qi Niu, Han-Qing Zheng. 2022-03-07. On Lowest Lying $\frac{1}{2}^-$ Octet Baryons. https://doi.org/10.1088/1674-1137%2Fac68d7

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