Exotic multi-quark states and baryon spectroscopy workshop

Two-pole structures in QCD

26 Jun 2024, 15:00

1h

Wolfgang Paul Hörsaal (Universitätsclub Bonn, the University of Bonn)

Speaker

Ulf-G Meißner

Description

The term two-pole structure refers to the fact that particular single states in the hadron spec- trum as listed in the PDG tables are often two states. In this talk, I will discuss in some detail the cases of the two Λ(1405) and the two $D^{0\star }$(2300) states. I further discuss the consequences for our understanding of bound states in QCD and point out some sins committed in the current literature.

Presentation materials

Ulf_EMC24pp4.pdf