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arXiv · 1907.03645

Hyperon I: Partial wave amplitudes for $K^-p$ scattering

M. ~Matveev·A. V. ~Sarantsev·V. A. Nikonov·A. V. Anisovic·U. Thoma·E. Klempt
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Abstract

Early data on $K^-$ induced reactions off protons are collected and used in a coupled-channel partial wave analysis (PWA). Data which had been published in the form of Legendre coefficients are included in the PWA. In a {\it primary} fit using 3* and 4* resonances only, we observe some significant discrepancies with the data. In a systematic search for new $\Lambda$ and $\Sigma$ hyperon resonances, additional candidates are found. The significance of the known and of the additional resonances is evaluated. Seventeen resonances listed with 1* or 2* and one resonance listed with 3* in the Review of Particle Properties cannot be confirmed, five new hyperons are suggested. The partial-wave amplitudes deduced in this analysis are compared to those from other analyses.

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M. ~Matveev, A. V. ~Sarantsev, V. A. Nikonov, A. V. Anisovic, U. Thoma, E. Klempt. 2019-07-08. Hyperon I: Partial wave amplitudes for $K^-p$ scattering. https://doi.org/10.1140/epja%2Fi2019-12878-y

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