https://doi.org/10.1140/epja/s10050-022-00852-1
Regular Article - Theoretical Physics
Light baryon resonances from a coupled-channel study including
photoproduction
1
Institute for Advanced Simulation and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425, Jülich, Germany
2
Institute for Nuclear Studies and Department of Physics, The George Washington University, 20052, Washington, DC, USA
3
Thomas Jefferson National Accelerator Facility, 12000 Jefferson Avenue, Newport News, VA, USA
4
Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) and Bethe Center for Theoretical Physics, Universität Bonn, 53115, Bonn, Germany
5
Tbilisi State University, 0186, Tbilisi, Georgia
Received:
15
August
2022
Accepted:
6
October
2022
Published online:
27
November
2022
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.
© The Author(s) 2022
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