Conference Presentation (Invited)

FZJ-2022-05204

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Baryon spectroscopy with the Jülich-Bonn dynamical coupled-channel approach

Rönchen, D. (Corresponding author)FZJ*

2022

Abstract: In order to probe the nature of the strong interactions in the medium-energy regime, where a perturbative expansion of QCD is not possible, the spectrum of excited baryons provides important information. Over the time, different approaches have been developed to connect predictions from quark models or lattice calculations to experimental data. Among those, dynamical coupled-channel models are especially suited for a simultaneous analysis of multiple reactions with different initial and final states. Unitarity and analyticity are preserved which allows for an extraction of resonance parameters in a well defined way, i.e. in terms of pole positions and residues.I will give an introduction into the framework of the so-called Jülich-Bonn dynamical coupled-channel model, and present results of a combined study of pion- and photon-induced hadronic reactions.Recently, the approach was also extended to electroproduction reactions.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)

Research Program(s):

1. 5111 - Domain-Specific Simulation Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)

Appears in the scientific report 2022

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