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.

arXiv comment16 pages, 8 figures, invited article for the Special Issue "The Quantum Chromodynamics: 50th Anniversary of the Discovery" of Universe

References in corpus (25)

• The $XYZ$ states: experimental and theoretical status and perspectives
• Observation of an exotic narrow doubly charmed tetraquark
• Study of the doubly charmed tetraquark $T_{cc}^{+}$
• Amplitude analysis of the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decay
• Model-independent study of structure in $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decays
• Possible interpretations of the $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Narrow Tetraquarks at Large N
• Impressions of the Continuum Bound State Problem in QCD
• The effective continuum threshold in dispersive sum rules
• Are There Tetraquarks at Large $N_c$ in QCD(F)?
• Hidden charm pentaquarks with color-octet substructure in QCD Sum Rules
• Narrow exotic tetraquark mesons in large-$N_c$ QCD
• Tetraquarks in large-$N_c$ QCD
• Tetraquark-adequate formulation of QCD sum rules
• Tetraquarks in the 1/N expansion and meson-meson resonances
• Tetraquark and two-meson states at large $N_{\mathrm{c}}$
• Tetraquark-adequate QCD sum rules for quark-exchange processes
• Are there narrow flavor-exotic tetraquarks in large-$N_c$ QCD?
• Cluster reducibility of multiquark operators
• Mass of $1^{-+}$ four-quark--hybrid mixed states
• Exotic Tetraquark Mesons in Large-$N_c$ Limit: an Unexpected Great Surprise
• OPE and quark-hadron duality for two-point functions of tetraquark currents in $1/N_c$ expansion
• Axial-vector and pseudoscalar tetraquarks $[ud][\bar{c}\bar{s}]$
• Next-to-Leading Order (NLO) Perturbative Effects in QCD Sum-Rule Analyses of Light Tetraquark Systems: A Case Study in the Scalar-Isoscalar Channel
• Multiquark-Adequate QCD Sum Rules: the Case of Flavour-Exotic Tetraquarks

Cited by in corpus (1)

• Mission Target: Tetraquark Mesons of Flavour-Cryptoexotic Type