Baryon Spectroscopy
Baryon resonance parameters (e.g. mass, width, pole position) have been extracted so far by partial-wave analyses of scattering data. An intense effort has started to add information from photon-induced meson production at ELSA, JLAB and MAMI, from charmonium decays at BESIII and diffractive pp reactions at COMPASS. The recent strong indications for a resonance around 2.4GeV in the 6-quark system are an important advance in the quest for a deeper understanding of QCD and bound quark systems beyond the usual 3q and systems. Other experiments are providing evidence for the existence of 4q (Belle, BaBar, BESIII, LHCb) and 5q (LHCb) systems. The same analysis framework developed for Task3 will be used to extract resonance parameters adopting the state-of-the-art calculations developed in Task1 (e.g Laurent-Pietarinen method).
Task 4 is divided into the following sub-tasks:
- T4.1 - Resonance parameter determination
- T4.2 - Diffractive and annihilation production and exotic baryon
- T4.3 - Dibaryon structure and parameter determination