Speaker
Michael Doring
(George Washington U and Jefferson Lab)
Description
Hadronic resonances are emergent phenomena of Quantum Chromodynamics at intermediate energies. Almost all resonances decay not only to two, but also to three or more particles. Parametrizing three-body dynamics in terms of unitary coupled-channel amplitudes is, therefore, a prerequisite for the extraction of resonances from experiment and also from finite-volume lattice QCD spectra. In the talk, construction principles, examples, and applications for three-body amplitudes will be presented, including the axial $a_1(1260)$ and its three-pion dynamics, its determination from lattice QCD, and recent extensions to strangeness channels and complex energies, as well as connections to triangle singularities.
Primary author
Michael Doring
(George Washington U and Jefferson Lab)
Co-authors
Yuchuan Feng
(The George Washington University)
Dr
Fernando Gil
(Universitat de Valencia)
Maxim Mai
(University of Bonn / The George Washington University)
Raquel Molina Peralta
(UV-IFIC)
Vanamali Shastry
(CEEM, IU Bloomington)
Adam Szczepaniak
(Indiana Univeristy/JLab)
