The hidden-charm pentaquark and tetraquark states
In the past decade many charmonium-like states were observed experimentally. Especially
those charged charmonium-like Z c states and bottomonium-like Z b states cannot be …
those charged charmonium-like Z c states and bottomonium-like Z b states cannot be …
Gluonic hadrons
FE Close - Reports on Progress in Physics, 1988 - iopscience.iop.org
The standard theory of colour forces (QCD) suggests that in addition to the familiar hadrons
made of quarks, there should exist new states where coloured gluons play an essential …
made of quarks, there should exist new states where coloured gluons play an essential …
Four-quark exotic mesons
We review our investigations devoted to the analysis of the resonances Zc (3900), Zc (4430),
Zc (4100), X (4140), X (4274), α1 (1420), Y (4660), X (2100), X (2239), and Y (2175) …
Zc (4100), X (4140), X (4274), α1 (1420), Y (4660), X (2100), X (2239), and Y (2175) …
Hybrid and conventional mesons in the flux tube model: Numerical studies and their phenomenological implications
T Barnes, FE Close, ES Swanson - Physical Review D, 1995 - APS
We present results from analytical and numerical studies of a flux tube model of hybrid
mesons. Our numerical results use a Hamiltonian Monte Carlo algorithm and so improve on …
mesons. Our numerical results use a Hamiltonian Monte Carlo algorithm and so improve on …
[HTML][HTML] Doubly charged vector tetraquark ZV++=[cu][s‾ d‾]
We explore properties of the doubly charged vector tetraquark Z V++=[cu][s‾ d‾] built of four
quarks of different flavors using the QCD sum rule methods. The mass and current coupling …
quarks of different flavors using the QCD sum rule methods. The mass and current coupling …
Strong ; decays in QCD
The widths of the strong decays Z c+(3900)→ J/ψ π+ and Z c+(3900)→ η c ρ+ are
calculated. To this end, the mass and decay constant of the exotic Z c+(3900) state are …
calculated. To this end, the mass and decay constant of the exotic Z c+(3900) state are …
Predictions of the hybrid mesons with exotic quantum numbers
QN Wang, DK Lian, W Chen - Physical Review D, 2023 - APS
We study the nonstrange and strangeonium light hybrid mesons with JPC= 2+-by using the
method of QCD sum rules. The local hybrid interpolating currents with three Lorentz indices …
method of QCD sum rules. The local hybrid interpolating currents with three Lorentz indices …
Spin structure of heavy-quark hybrids
A unique feature of quantum chromodynamics (QCD), the theory of strong interactions, is the
possibility for gluonic degrees of freedom to participate in the construction of physical …
possibility for gluonic degrees of freedom to participate in the construction of physical …
QCD sum rules and hybrid mesons
J Govaerts, F de Viron, D Gusbin, J Weyers - Nuclear Physics B, 1984 - Elsevier
A general background field method is presented to compute operator product expansions in
the framework of QCD sum rules. Using it for operators coupling to hybrid mesons, we …
the framework of QCD sum rules. Using it for operators coupling to hybrid mesons, we …
Mass predictions of vector () double-gluon heavy quarkonium hybrids from QCD sum rules
CM Tang, YC Zhao, L Tang - Physical Review D, 2022 - APS
In this work, we study the 1--double-gluon charmonium (c¯ ggc) and bottomonium (b¯ ggb)
hybrids in terms of QCD sum rules. We find that the mass of c¯ ggc hybrid lies in MH c= 5.33 …
hybrids in terms of QCD sum rules. We find that the mass of c¯ ggc hybrid lies in MH c= 5.33 …