[HTML][HTML] Light baryon resonances from a coupled-channel study including photoproduction
D Rönchen, M Döring, UG Meißner… - The European Physical …, 2022 - Springer
D Rönchen, M Döring, UG Meißner, CW Shen
The European Physical Journal A, 2022•SpringerThe Jülich-Bonn dynamical coupled-channel approach is extended to include K Σ
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 π N, η N, K Λ, and K Σ 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 γ p→ K Σ …
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 π N, η N, K Λ, and K Σ 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 γ p→ K Σ …
Abstract
The Jülich-Bonn dynamical coupled-channel approach is extended to include photoproduction off the proton. Differential cross section and (double) polarization data for and are analysed simultaneously with the pion- and photon-induced production of , , , and final states, totaling almost 72,000 data points for center-of-mass energies GeV. Based on the fit results the spectrum of and resonances is extracted in terms of pole positions and residues. We discuss the impact of the channels in detail and investigate the influence of recent polarization data for photoproduction.
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