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DOE OSTI · 1903743

Light baryon resonances from a coupled-channel study including $$\mathbf {K\Sigma }$$ photoproduction

Rönchen, D.·Döring, M.·Meißner, U. -G.·Shen, C. -W.
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Abstract

The Jülich-Bonn dynamical coupled-channel approach is extended to include KΣ photoproduction off the proton. Differential cross section and (double) polarization data for K + Σ 0 and K 0 Σ + are analysed simultaneously with the pion- and photon-induced production of πN, ηN, KΛ, and KΣ final states, totaling almost 72,000 data points for center-of-mass energies W<2.4 GeV. Based on the fit results the spectrum of N * and Δ resonances is extracted in terms of pole positions and residues. We discuss the impact of the γp→KΣ channels in detail and investigate the influence of recent polarization data for ηp photoproduction.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS

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Rönchen, D., Döring, M., Meißner, U. -G., Shen, C. -W.. 2022-11-27. Light baryon resonances from a coupled-channel study including $$\mathbf {K\Sigma }$$ photoproduction. https://doi.org/10.1140/epja%2Fs10050-022-00852-1

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