BESIII reports discoveries of new excited nucleon, Lambda, Sigma, Xi, and Omega hyperon states from high-statistics electron-positron collision data.
Multichannel parametrization of $\bar K N$ scattering amplitudes and extraction of resonance parameters
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abstract
We present results of a new multichannel partial-wave analysis for $\bar K N$ scattering in the c.m.\ energy range 1480 to 2100 MeV. Resonance parameters were extracted by fitting partial-wave amplitudes from all considered channels using a multichannel parametrization that is consistent with $S$-matrix unitarity. The resonance parameters are generally in good agreement with predictions of the Koniuk-Isgur quark model.
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2026 1verdicts
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Experimental Advances on Light Baryon Spectroscopy at BESIII Experiment
BESIII reports discoveries of new excited nucleon, Lambda, Sigma, Xi, and Omega hyperon states from high-statistics electron-positron collision data.