Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts

Abstract

The spectroscopy of light and heavy mesons is reviewed with emphasis on glueballs, hybrids, and tetraquarks.

266 pages, 117 figures, 39 tables. to be published in Physics Reports

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• Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions
• Constituent quark model study of the meson spectra
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• Update of the e^+e^-\toπ^+π^- cross section measured by SND detector in the energy region 400<\sqrt{s}<1000 MeV
• Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture
• Three dimensional image correlation from X-Ray computed tomography of solid foam
• QCD sum rules study of $QQ-\bar{u}\bar{d}$ mesons
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• Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range
• Restoration of chiral and $U(1{)}_A$ symmetries in excited hadrons
• $D_{sJ}(2860)$ and $D_{sJ}(2715)$
• Measurement of the pseudoscalar mixing angle and ${\eta }^{\prime }$ gluonium content with KLOE detector
• The nature of $\sigma$, $\kappa$, $a_0(980)$ and $f_0(980)$
• Linear square-mass trajectories of radially and orbitally excited hadrons in holographic QCD
• High statistics study of f_0(980) resonance in gamma gamma --> pi^+ pi^- production
• Canonical Interpretation of the D_{sJ}(2860) and D_{sJ}(2690)
• Two-photon decays of hadronic molecules
• Effects of S-wave thresholds
• D_{sJ}(2860) as the first radial excitation of the D_{s0}^*(2317)
• $D_{sJ}(2860)$ resonance and the $s_{\ell }^P={\frac{5}{2}}^{-}$ $c\bar{s}$ ($c\bar{q}$) doublet
• A lattice study of the masses of singlet 0++ mesons
• Properties of new unflavored mesons below 2.4 GeV
• Light meson spectrum and classical symmetries of QCD
• Chromomagnetism, flavour symmetry breaking and S-wave tetraquarks
• Mass Uncertainties of f0(600) and f0(1370) and their Effects on Determination of the Quark and Glueball Admixtures of the I=0 Scalar Mesons
• A Study in Depth of f0(1370)
• Threshold effect and π^\pm ψ(2S) peak
• An improved study of the kappa resonance and the non-exotic $s$ wave $\pi K$ scatterings up to $\sqrt{s}=2.1$GeV of LASS data
• Generalizing the Noether theorem for Hopf-algebra spacetime symmetries
• Towards understanding broad degeneracy in non-strange mesons
• Determining the upper limit of Gamma_{ee} for the Y(4260)
• ppbar enhancement in B and J/Psi decay
• Parity Doubling Among the Baryons
• Experimental indication on chiral symmetry restoration in meson spectrum
• Ordinary and Extraordinary Hadrons
• Improved Analysis of J/psi Decays into a Vector Meson and Two Pseudoscalars
• The e+ e- -> P1 P2 gamma processes close to the Phi peak: toward a model-independent analysis
• Hybrid meson properties in Lattice QCD and Flux Tube Models
• Structure of the axial-vector meson $D_{s1}(2460)$ and the strong coupling constant $g_{D_{s1}{D}^{\ast }K}$ with the light-cone QCD sum rules
• Structure of the $D_{s0}(2317)$ and the strong coupling constant $g_{D_{s0}DK}$ with the light-cone QCD sum rules
• Charm as a domain wall fermion in quenched lattice QCD
• Positive Parity Scalar Mesons in the 1-2 GeV Mass Range
• Study of the $e^{+}{e}^{-}\to \eta \gamma$ process with SND detector at the VEPP-2M $e^{+}{e}^{-}$ collider
• Reconclining phi radiative decays with other data for a0(980), fo(980), pi-pi -> KK and pi-pi -> eta-eta
• Study on Decays of $D_{sJ}^{\ast }(2317)$ and $D_{sJ}(2460)$ in terms of the CQM Model
• Two-pion transitions in quarkonium revisited
• X(1812) in Quarkonia-Glueball-Hybrid Mixing Scheme
• Experimental Study of the Reaction $e^{+}{e}^{-}\to K_S{K}_L$ in the Energy Range $\sqrt{s}=1.04÷1.38$ GeV
• Modern theory of nuclear forces
• Sizes of Lightest Glueballs in SU(3) Lattice Gauge Theory
• Light 1-+ exotics: molecular resonances
• Suppression of flavor symmetry breaking in B decay sum rules
• Towards an understanding of the light scalar mesons
• The operator product expansion does not imply parity doubling of hadrons
• On Goldstone bosons decoupling from high-lying hadrons
• Light Quark Resonances in pbar p Annihilations at 5.2 GeV/c
• X(1576) and the Final State Interaction Effect
• Analysis of the X(1576) as a tetraquark state with the QCD sum rules
• X(1576) as Diquark-Antidiquark Bound State
• Exotic Meson Decay Widths using Lattice QCD
• Isospin and a possible interpretation of the newly observed X(1576)
• Hadronic decays from the lattice
• Remarks on the amplitude of the decay Upsilon(3S) -> Upsilon(1S) pi pi
• D_{s0}^+(2317) as an iso-triplet four-quark meson

Cited by in corpus (131)

• Heavy quarkonium: progress, puzzles, and opportunities
• Light-Front Holography: A First Approximation to QCD
• The Physics of Glueballs
• Mass spectra and Regge trajectories of light mesons in the relativistic quark model
• The Status of Glueballs
• Hybrid Mesons
• Towards the glueball spectrum from unquenched lattice QCD
• Isoscalar meson spectroscopy from lattice QCD
• Light Hadron Masses from Lattice QCD
• $Z_b$ and $Z_c$ Exotic States as Coupled Channel Cusps
• Is f0(1710) a glueball?
• Evidence that the Y(4660) is a f_0(980)psi' bound state
• Strong decays of heavy-light mesons in a chiral quark model
• On the nature of $a_1(1420)$
• Dynamical holographic QCD with area-law confinement and linear Regge trajectories
• Subleading contributions to the width of the D_{s0}*(2317)
• Implications of heavy quark spin symmetry on heavy meson hadronic molecules
• Kinematical and Dynamical Aspects of Higher-Spin Bound-State Equations in Holographic QCD
• Branching fractions of semileptonic $D$ and $D_s$ decays from the covariant light-front quark model
• Interplay of quark and meson degrees of freedom in a near-threshold resonance
• Decay of the pseudoscalar glueball into scalar and pseudoscalar mesons
• Holographic glueball structure
• Odd and Even Partial Waves of $\eta {\pi }^{-}$ and ${\eta }^{\prime }{\pi }^{-}$ in ${\pi }^{-}p\to {\eta }^{(\prime )}{\pi }^{-}p$ at $191\text{GeV}/c$
• $f_1(1285)$ decays into $a_0(980){\pi }^0$, $f_0(980){\pi }^0$ and isospin breaking
• Analysis of the scalar and axial-vector heavy diquark states with QCD sum rules
• Study of J/psi->eta phi pi+pi- at BESIII
• Standard candle central exclusive processes at the Tevatron and LHC
• A Study in Depth of f0(1370)
• Amplitude Analysis of High Statistics Results on $\gamma \gamma \to {\pi }^{+}{\pi }^{-}$ and the Two Photon Width of Isoscalar States
• Glueball nature of the sigma/f_0(600) from pi-pi and gamma-gamma scatterings
• Dynamical generation of pseudoscalar resonances
• The I^G J^{PC}=1^- 1^{-+} Tetraquark States
• Thermodynamics and Phase Structure of the Two-Flavor Nambu--Jona-Lasinio Model Beyond Large-N_c
• Scalar mesons in weak semileptonic decays of $B_{(s)}$
• The mass spectrum and strong decays of isoscalar tensor mesons
• $f_0(500)$, $f_0(980)$ and $a_0(980)$ production in the ${\chi }_{c1}\to \eta {\pi }^{+}{\pi }^{-}$ reaction
• Heavy quark symmetry and weak decays of the $b$-baryons in pentaquarks with a $c\bar{c}$ component
• $X(1835)$ and $\eta (1760)$ observed by the BES Collaboration
• Weak productions of new charmonium in semi-leptonic decays of B_c
• Properties of the rho and sigma Mesons from Unitary Chiral Dynamics
• Puzzles in Hadronic Physics and Novel Quantum Chromodynamics Phenomenology
• Charmed-strange Meson Spectrum: Old and New Problems
• Gluonium nature of the sigma/f_0(600) from its coupling to KK
• Predictions for ${\eta }_c\to \eta {\pi }^{+}{\pi }^{-}$ producing $f_0(500)$, $f_0(980)$ and $a_0(980)$
• Gluons in glueballs: Spin or helicity?
• Open-flavor charmed/bottom $sq\bar{q}\bar{Q}$ and $qq\bar{q}\bar{Q}$ tetraquark states
• Triangular singularity and a possible $\varphi p$ resonance in the ${\Lambda }_c^{+}\to {\pi }^0\varphi p$ decay
• The I^G J^{PC}=0^+ 1^{-+} Tetraquark State
• Polyakov SU(3) extended linear $\sigma$-model: Sixteen mesonic states in chiral phase-structure
• Strong and radiative decays of excited vector mesons and predictions for a new $\varphi (1930)$ resonance
• Magnetic and quadrupole moments of the $Z_c(3900)$
• Sum rules for light-by-light scattering
• Scalar-isoscalar states in the large-Nc Regge approach
• Extraction of Meson Resonances from Three-pions Photo-production Reactions
• $X(1835)$ and the New Resonances $X(2120)$ and $X(2370)$ Observed by the BES Collaboration
• $B^0$ and $B_s^0$ decays into $J/\psi$ plus a scalar or vector meson
• eta(1405) in a chiral approach based on mixing of the pseudoscalar glueball with the first radial excitations of eta and eta'
• Light scalar mesons in QCD
• Two-photon decay of heavy hadron molecules
• Weak decays of heavy hadron molecules involving the f0(980)
• Pseudotensor meson family
• A Comprehensive Study of the Radiative Decays of $J/\psi$ and $\psi (2S)$ to Pseudoscalar Meson Pairs, and Search for Glueballs
• Glueballs and Mesons: the Ground States
• The Possible J^{PC}=0^{--} Exotic State
• Open charm-bottom scalar tetraquarks and their strong decays
• Central exclusive production at RHIC
• Strong decay of the heavy tensor mesons with QCD sum rules
• Mass spectrum of the axial-vector hidden charmed and hidden bottom tetraquark states
• Covariant spectator theory of quark-antiquark bound states: Mass spectra and vertex functions of heavy and heavy-light mesons
• Constituent gluon interpretation of glueballs and gluelumps
• $f_2(1810)$ as a triangle singularity
• Exclusive photoproduction of $f_1(1285)$ meson off proton in the JLab kinematics
• Strange quark matter in the presence of explicit symmetry breaking interactions
• The role of the next-to-leading order triangle-shaped diagram in two-body hadronic decays
• Propagator poles and an emergent stable state below threshold: general discussion and the E(38) state
• $a_1(1420)$ resonance as a tetraquark state and its isospin partner
• Mass spectrum of the vector hidden charm and bottom tetraquark states
• Magnetic dipole moment of $Z_b(10610)$ in light-cone QCD
• Phenomenology of pseudotensor mesons and the pseudotensor glueball
• High-spin mesons below 3 GeV
• Implications of the Crystal Barrel data for meson-baryon symmetries
• Possible tetraquark states in the ${\pi }^{+}{\chi }_{c1}$ invariant mass distribution
• Recent progress on the study of the charmoniumlike states
• Light scalar tetraquarks from a holographic perspective
• Meson decay in a corrected $3_0^P$ model
• Lattice status of gluonia/glueballs
• Chiral Nonet Mixing in ${\eta }^{\prime }\to \eta \pi \pi$ Decay
• Form factors and transverse charge and magnetization densities in the hard-wall AdS/QCD model
• $B^{\ast }{B}^{\ast }\rho$ vertex from QCD sum rules
• Inclusive K0SK0S resonance production in ep collisions at HERA
• Observation of $J/\psi \to \gamma \eta {\pi }^0$
• On Vector Meson Masses in a Holographic SQCD
• Exploring the meson spectrum with twisted mass lattice QCD
• Parity doubling from Weinberg sum rules
• Probing the substructure of $f_0(1370)$
• Resonance $X(5568)$ as an exotic axial-vector state
• The sigma meson from QCD sum rules for large-$N_c$ Regge spectra
• Soft wall model with inverse exponential profile as a model for the axial and pseudoscalar mesons
• Strong and Electromagnetic Decays of X(1835) as a Baryonium State
• The role of $a_1(1260)$ in ${\pi }^{-}p\to a_1^{-}(1260)p$ and ${\pi }^{-}p\to {\pi }^{-}{\rho }^{0}p$ reactions near threshold
• Holographically emulating sequential versus instantaneous disappearance of vector mesons in a hot environment
• Mass Formula for Light Nonstrange Mesons and Regge Trajectories in Quark Model
• Scalar Meson Photoproduction
• Delta resonances, quark models, chiral symmetry and AdS/QCD
• Decay of vector-vector resonances into $\gamma$ and a pseudoscalar meson
• Computation of pion and kaon heavy ion multiplicities in a gluon-meson model
• The finite-width Laplace sum rules for $0^{++}$ scalar glueball in instanton liquid model
• Strong decays $B_{s0}\to B_s\pi$ and $B_{s1}\to B_s^{\ast }\pi$ with light-cone QCD sum rules
• Faddeev fixed center approximation to $\pi \bar{K}{K}^{\ast }$ system and the ${\pi }_1(1600)$
• Interpretation of K+K0bar pair production in pp collisions
• Further study of $D_s^{+}$ decays into ${\pi }^{-}{\pi }^{+}{\pi }^{+}$
• Effective chiral restoration in the rho'-meson in lattice QCD
• Search for a promising tetraquark candidate $X(ud\bar{s}\bar{s})$ in $pn\to \Lambda \Lambda X$
• Vacuum properties of open charmed mesons in a chiral symmetric model
• KKbar molecules with momentum-dependent interactions
• Proton-proton, pion-proton and pion-pion diffractive collisions at ultra-high energies
• Illuminating hadron structure by scattering light on light
• Scalar Mesons and FAIR
• Reply to comment on "Two-photon decay of the sigma meson"
• Semileptonic $B^{-}\to f_0(1710,1500,1370)e^{-}{\bar{\nu }}_e$ decays
• Can one measure C-odd asymmetry in e+e- --> pi+pi-
• Central soft production of hadrons in $pp$ collisions
• Partial Wave Analysis at BESIII
• Application of the Covariant Spectator Theory to the study of heavy and heavy-light mesons
• Search for light tetraquark states in ${\rm Y}(1S)$ and ${\rm Y}(2S)$ decays
• Spectral-statistics properties of the experimental and theoretical light meson spectra
• Meson Spectroscopy at COMPASS
• Low-lying exotic mesons in the coupled-channel formalism
• Hadron resonances generated from the dynamics of the lightest scalar ones
• The flavor universality of some mass splittings in hadrons
• The spectrum of light isovector mesons with $C=+1$ from the COMPASS experiment