Dynamical coupled-channel models for hadron dynamics

TL;DR

This paper reviews dynamical coupled-channel models that analyze hadron interactions, resonance spectra, and their responses to various probes, integrating unitarity, three-body channels, and lattice QCD connections.

Contribution

It provides a comprehensive review of formalism, applications, and recent advances in DCC models for hadron dynamics, including modern computational techniques.

Findings

Effective extraction of resonance properties from scattering data.

Application of DCC models to diverse reactions and systems.

Integration of lattice QCD spectra with DCC formalism.

Abstract

Dynamical coupled-channel (DCC) approaches parametrize the interactions and dynamics of two and more hadrons and their response to different electroweak probes. The inclusion of unitarity, three-body channels, and other properties from scattering theory allows for a reliable extraction of resonance spectra and their properties from data. We review the formalism and application of the ANL-Osaka, the Juelich-Bonn-Washington, and other DCC approaches in the context of light baryon resonances from meson, (virtual) photon, and neutrino-induced reactions, as well as production reactions, strange baryons, light mesons, heavy meson systems, exotics, and baryon-baryon interactions. Finally, we also provide a connection of the formalism to study finite-volume spectra obtained in Lattice QCD, and review applications involving modern statistical and machine learning tools.