TRR 110 Workshop - Amplitudes for Three-Body Final States


TRR 110 Workshop - Amplitudes for Three-Body Final States

11 - 13 July 2018

MIAPP Building (T1)
Campus of Max-Planck Society at Garching Science Center

Decays of mesons and tau leptons into three hadrons serve as a tool in studying both spectroscopy and the weak dynamics of heavy flavour decays. State of the art analyses of experimental data are now able to determine the underlying decay amplitudes with less and less model dependence, often projected onto the JPC of a 2-body subsystem. To explore the wealth of new information and to extract the sought-for physics observables, however, requires a new quality of mathematical description of such amplitudes. These are governed by the strong interaction among these hadrons. While for almost 50 years such descriptions relied on the idealized isobar picture (including S-wave scattering of two hadrons), high precision data require a more refined understanding covering the full spectral distribution of these complex amplitudes. Final state interaction, triangular diagrams, chiral dynamics, Regge phenomenology and dispersion relations are just some of the ingredients used for this purpose.

The TRR110 workshop will joint theorists and experimentalists aiming to address above topics.