Journal ArticleDOI
Nonperturbative potential model for light and heavy quark-antiquark systems
D. P. Stanley,D. Robson +1 more
TLDR
In this article, a potential model based on quantum-chromodynamics (QCD) considerations is developed, which attempts to overcome the relativistic limitations associated with earlier models by introducing an effective size for quarks.Abstract:
A potential model based on quantum-chromodynamics (QCD) considerations is developed. The model attempts to overcome the relativistic limitations associated with earlier models by introducing an effective size for quarks. Application of the model Hamiltonian to both light and heavy mesons yields an accurate description of the mass spectrum, radiative transitions, and annihilation widths for a large number of known mesons. Spin-dependent interactions are treated nonperturbatively using standard diagonalization procedures with an oscillator basis set and relativistic kinematics are adopted throughout. The scaling of the potential parameters is found to be similar to simple QCD predictions. Much of the anomalous behavior for pseudoscalar mesons appears to be resolved both for light and heavy mesons.read more
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Journal ArticleDOI
The hidden-charm pentaquark and tetraquark states
TL;DR: Recently, the LHCb Collaboration discovered two hidden-charm pentaquark states, which are also beyond the quark model as discussed by the authors, and investigated various theoretical interpretations of these candidates of the multiquark states.
Journal ArticleDOI
Bound states of quarks
TL;DR: In this article, a review of the potential-model approach is presented, together with a brief survey of the motivations for various potential models and the application of the developed theoretical framework.
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Pentaquark and Tetraquark states
TL;DR: Recently, the LHCb collaboration not only confirmed the existence of the hidden-charm pentaquarks, but also provided strong evidence of the molecular picture as discussed by the authors, where the authors reviewed the experimental and theoretical efforts on the hidden heavy flavor multiquark systems in the past three years.
Journal ArticleDOI
Pentaquark and Tetraquark states
TL;DR: In this paper, the experimental and theoretical efforts on the hidden heavy flavor multiquark systems in the past three years were reviewed extensively in [Phys. Rept. 639 (2016) 1-121].
Journal ArticleDOI
A low lying scalar meson nonet in a unitarized meson model
TL;DR: In this article, a non-relativistic meson model is proposed for the description of the heavy and light vector and pseudo-scalar mesons, which yields a complete nonet below 1 GeV.