Mission Target: Exotic Multiquark Hadrons—Sharpened Blades

Abstract

Motivated by recent experimental progress in establishing the likely existence of (variants of) exotic hadrons, predicted to be formed by the strong interactions, various proposed concepts and ideas are compiled in an attempt to draft a coherent picture of the achievable improvement in the theoretical interpretation of exotic hadrons in terms of the underlying quantum field theory of strong interactions.

Keywords

• exotic hadron states
• multiquark adequacy
• QCD sum rule
• large-<i>Nc</i> limit
• 1/<i>Nc</i> expansion