The End of the Constituent Quark Model?

Abstract

In this conference summary talk at Hadron03, questions and challenges for Hadron physics of light flavours are outlined. Precision data and recent discoveries are at last exposing the limitations of the naive constituent quark model and also giving hints as to its extension into a more mature description of hadrons. These notes also pay special attention to the positive strangeness baryon ${\Theta }^{+}(1540)$ and include a pedagogic discussion of wavefunctions in the pentaquark picture, their relation with the Skyrme model and related issues of phenomenology.

Conference Summary Talk Hadron 03

References in corpus (1)

• Radiative decays: a new flavour filter

Cited by in corpus (16)

• Central Exclusive Particle Production at High Energy Hadron Colliders
• Chiral-Soliton Predictions for Exotic Baryons
• A Candidate for $1^{--}$ Strangeonium Hybrid
• Effects of S-wave thresholds
• Too many $X^{\prime }s$, $Y^{\prime }s$ and $Z^{\prime }s$?
• Unraveling the pattern of the $XYZ$ mesons
• An Experimental Review of the ${\Theta }^{+}$ Pentaquark
• Width of a two-body coupled-channel resonance
• Zero mode effect in the $1^{-+}$ four quark states
• Hadronic resonances enhanced by thresholds
• No Radial Excitations in Low Energy QCD. I. Diquarks and Classification of Mesons
• A model realisation of the Jaffe-Wilczek correlation for pentaquarks
• On the proliferation of X's, Y's and Z's candidates
• Relativistic Calculation of the Width of the Theta (1540) Pentaquark
• Pentaquark from QCD sum rules: consequences of the diquark approach
• On the Origin of the $XYZ$ Mesons