An updated review of the new hadron states

Abstract

The past decades witnessed the golden era of hadron physics. Many excited open heavy flavor mesons and baryons have been observed since 2017. We shall provide an updated review of the recent experimental and theoretical progresses in this active field. Besides the conventional heavy hadrons, we shall also review the recently observed open heavy flavor tetraquark states $X(2900)$ and $T_{cc}^{+}(3875)$ as well as the hidden heavy flavor multiquark states $X(6900)$, $P_{cs}(4459{)}^0$, $Z_{cs}(3985{)}^{-}$, $Z_{cs}(4000{)}^{+}$, and $Z_{cs}(4220{)}^{+}$. We will also cover the recent progresses on the glueballs and light hybrid mesons, which are the direct manifestations of the non-Abelian $SU(3)$ gauge interaction of the Quantum Chromodynamics in the low-energy region.

arXiv commentReview accepted by Reports on Progress in Physics, 179 pages, 87 figures, 15 tables

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• Fine Structure of the QCD String Spectrum
• Exotic QQ\qbar\qbar States in QCD
• Quarkonia and their transitions
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• The Status of Glueballs
• Strong LHCb evidence supporting the existence of the hidden-charm molecular pentaquarks
• The Production and Decay of Hybrid Mesons by Flux-Tube Breaking
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• A survey of heavy-heavy hadronic molecules
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• Combining heavy quark spin and local hidden gauge symmetries in the dynamical generation of hidden charm baryons
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• EVIDENCE FOR A SCALAR GLUEBALL
• Benchmarks for the Forward Observables at RHIC, the Tevatron-run II and the LHC
• Masses of heavy tetraquarks in the relativistic quark model
• Hybrid Mesons
• Evidence for Exotic Meson Production in the Reaction ${\pi }^{-}p\to \eta {\pi }^{-}p$ at 18 GeV/c
• Masses of tetraquarks with two heavy quarks in the relativistic quark model
• Sigma_c Dbar and Lambda_c Dbar states in a chiral quark model
• Study of doubly heavy tetraquarks in Lattice QCD
• Observation of new resonances decaying to $J/\psi K^{+}$ and $J/\psi \varphi$
• Toward the excited isoscalar meson spectrum from lattice QCD
• Exotic hadrons: review and perspectives
• Decay width of light quark hybrid meson from the lattice
• Hybrid and Conventional Mesons in the Flux Tube Model: Numerical Studies and their Phenomenological Implications
• The Experimental Status of Glueballs
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• Observation of a new charged charmoniumlike state in B -> J/psi K pi decays
• Observation of a resonance X(1835) in J/ψ--> γπ^+ π^- η^{\prime}
• Towards the glueball spectrum from unquenched lattice QCD
• $QQ\bar{Q}\bar{Q}$ states: masses, production, and decays
• Properties of Excited Charm and Charm-Strange Mesons
• Asymptotic expansion of beta matrix models in the one-cut regime
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• QCD sum rules study of $QQ-\bar{u}\bar{d}$ mesons
• Search for Doubly Charmed Baryons Xi_cc^+ and Xi_cc^++ in BABAR
• Insights into the Emergence of Mass from Studies of Pion and Kaon Structure
• The Spin Structure of the Nucleon
• Exotic mesons in quenched lattice QCD
• An overview of $XYZ$ new particles
• Hunting for exotic doubly hidden-charm/bottom tetraquark states
• First observation of the doubly charmed baryon decay ${\Xi }_{cc}^{++}\to {\Xi }_c^{+}{\pi }^{+}$
• Discovery Potentials of Doubly Charmed Baryons
• Highly excited and exotic meson spectrum from dynamical lattice QCD
• Twist-3 Distribution Amplitudes of K* and phi Mesons
• Evidence for a $B_s^0{\pi }^{\pm }$ State
• Glueball Spectroscopy in a Relativistic Many-Body Approach to Hadron Structure
• Properties of Orbitally Excited Heavy-Light Mesons
• On the light glueball spectrum in a holographic description of QCD
• Possible interpretations of the $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Observation of new resonances decaying to $D\pi$ and $D^{\ast }\pi$ in inclusive $e^{+}{e}^{-}$ collisions near $\sqrt{s}=$10.58 GeV
• A non-relativistic model for the $[cc][\bar{c}\bar{c}]$ tetraquark
• Confirmation of the X(1835) and observation of the resonances X(2120) and X(2370) in J/psi->gamma pi^+pi^-eta'
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• The Vector and Axial-Vector Charmonium-like States
• Heavy-flavored tetraquark states with the $QQ\bar{Q}\bar{Q}$ configuration
• Weak Decays of Doubly Heavy Baryons: SU(3) Analysis
• Ground-state Spectrum of Light-quark Mesons
• Survey of heavy-meson observables
• Proton-proton elastic scattering at the LHC energy of {\surd} = 7 TeV
• Hybrid Meson Decay Phenomenology
• Weak Decays of Doubly Heavy Baryons: the $1/2\to 1/2$ case
• Coupled-Channel $D\pi$, $D\eta$ and $D_s\bar{K}$ Scattering from Lattice QCD
• The puzzle of anomalously large isospin violations in $\eta (1405/1475)\to 3\pi$
• Hybrid mesons from quenched QCD
• Coupled-channel approach to $T_{cc}^{+}$ including three-body effects
• QCD phenomenology of static sources and gluonic excitations at short distances
• Coupled-channel analysis of the possible $D^{(\ast )}{D}^{(\ast )}$, ${\bar{B}}^{(\ast )}{\bar{B}}^{(\ast )}$ and $D^{(\ast )}{\bar{B}}^{(\ast )}$ molecular states
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• Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective
• Observation of a New D_s Meson Decaying to D K at a Mass of 2.86 GeV/c^2
• Weak decays of heavy hadrons into dynamically generated resonances
• Observation of a Charmed Baryon Decaying to D0 p at a Mass Near 2.94 GeV/c2
• Assignments of ${\Lambda }_Q$ and ${\Xi }_Q$ baryons in the heavy quark-light diquark picture
• Observation of a J^PC = 1-+ exotic resonance in diffractive dissociation of 190 GeV/c pi- into pi- pi- pi+
• Charmed Tetraquarks Tcc and Tcs from Dynamical Lattice QCD Simulations
• A new interpretation for the $D_{s2}^{\ast }(2573)$ and the prediction of novel exotic charmed mesons
• Observation of an Isotriplet of Excited Charmed Baryons Decaying to ${\Lambda }_c^{+}\pi$
• Tetra- and penta-quark structures in the constituent quark model
• Explaining the Many Threshold Structures in the Heavy-Quark Hadron Spectrum
• New Hadron States
• Heavy-quark spin and flavour symmetry partners of the X(3872) revisited: what can we learn from the one boson exchange model?
• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Production of $f_0(1710)$, $f_0(1500)$, and $f_0(1370)$ in $J/\psi$ hadronic decays
• Exotic tetraquark states with the $qq\bar{Q}\bar{Q}$ configuration
• Masses of fully heavy tetraquarks $QQ\bar{Q}\bar{Q}$ in an extended relativized quark model
• Dalitz plot analysis of $B_s^0\to {\bar{D}}^0{K}^{-}{\pi }^{+}$ decays
• The Quark Model and $b$ Baryons
• Quarkonium Hybrids with Nonrelativistic Effective Field Theories
• The lightest hybrid meson supermultiplet in QCD
• The Tcc = DD* molecular state
• Lattice QCD investigation of a doubly-bottom $\bar{b}\bar{b}ud$ tetraquark with quantum numbers $I(J^P)=0(1^{+})$
• All-heavy tetraquarks
• Is f0(1710) a glueball?
• Analysis of the $QQ\bar{Q}\bar{Q}$ tetraquark states with QCD sum rules
• Establishing the first hidden-charm pentaquark with strangeness
• BB interactions with static bottom quarks from Lattice QCD
• Comprehensive analysis of the wave function of a hadronic resonance and its compositeness
• Signature of a doubly charm tetraquark pole in $D{D}^{\ast }$ scattering on the lattice
• Exotic meson-meson molecules and compact four--quark states
• Quantum Numbers of Recently Discovered ${\Omega }_c^0$ Baryons from Lattice QCD
• Observation of New States Decaying into ${\Lambda }_c^{+}{\pi }^{-}{\pi }^{+}$
• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• Very narrow excited ${\Omega }_c$ baryons
• Glueball Regge trajectories from gauge/string duality and the Pomeron
• Evidence for charm-bottom tetraquarks and the mass dependence of heavy-light tetraquark states from lattice QCD
• Bottom Baryons
• Dalitz plot analysis of $B^0\to {\overline{D}}^0{\pi }^{+}{\pi }^{-}$ decays
• Hadrons with a heavy colour-adjoint particle
• Twist-4 Distribution Amplitudes of the K${}^{\ast }$ and $\varphi$ Mesons in QCD
• Observation of a new ${\Xi }_b^{-}$ resonance
• Probabilistic interpretation of compositeness relation for resonances
• Exotic $QQ\bar{q}\bar{q}$, $QQ\bar{q}\bar{s}$ and $QQ\bar{s}\bar{s}$ states
• Lattice QCD signal for a bottom-bottom tetraquark
• P-wave charmed baryons from QCD sum rules
• Hadronic forward scattering: Predictions for the Large Hadron Collider and cosmic rays
• The Spin Structure of the Nucleon
• Charmed Baryon Physics Circa 2021
• Measurement of the lifetime of the doubly charmed baryon ${\Xi }_{cc}^{++}$
• Observation of excited Lambda_b0 baryons
• Tetraquarks in a chiral constituent quark model
• Infrared Behavior of the Gluon Propagator on a Large Volume Lattice
• Evidence for a new structure in the $J/\psi p$ and $J/\psi \bar{p}$ systems in $B_s^0\to J/\psi p\bar{p}$ decays
• The glueball spectrum of SU(3) gauge theory in 3+1 dimension
• Amplitude analysis of $B^{-}\to D^{+}{\pi }^{-}{\pi }^{-}$ decays
• Study of $D_{sJ}$ decays to $D^{\ast }K$ in inclusive $e^{+}{e}^{-}$ interactions
• Relativistic Heavy Quarks on the Lattice
• Prediction of hidden charm strange molecular baryon states with heavy quark spin symmetry
• Exotic Meson Production in the $f_1(1285){\pi }^{-}$ System observed in the Reaction ${\pi }^{-}p\to \eta {\pi }^{+}{\pi }^{-}{\pi }^{-}p$ at 18 GeV/c
• Solution of the Odderon Problem
• The mixing of the f0(1370), f0(1500) and f0(1710) and the search for the scalar glueball
• Determination of the pole position of the lightest hybrid meson candidate
• Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules
• Stable multiquark states with heavy quarks in a diquark model
• Spectrum of the strange hidden charm molecular pentaquarks in chiral effective field theory
• $T_{cc}^{+}$ coupled channel analysis and predictions
• Evidence for the existence of $ud\bar{b}\bar{b}$ and the non-existence of $ss\bar{b}\bar{b}$ and $cc\bar{b}\bar{b}$ tetraquarks from lattice QCD
• A $bb\bar{b}\bar{b}$ di-bottomonium at the LHC?
• Towards a theory of hadron resonances
• Heavy tetraquarks in the relativistic quark model
• The Glueball in a Chiral Linear Sigma Model with Vector Mesons
• Charmed-strange mesons revisited: mass spectra and strong decays
• Probing the long-range structure of the $T_{cc}^{+}$ with the strong and electromagnetic decays
• Low-lying charmed and charmed-strange baryon states
• Spectrum of the fully-heavy tetraquark state $QQ{\bar{Q}}^{\prime }{\bar{Q}}^{\prime }$
• Full-heavy tetraquarks in constituent quark models
• $B$ and $B_s$ Meson Spectroscopy
• Compact pentaquark structures
• A Study of Excited Charm-Strange Baryons with Evidence for new Baryons Ξ_c(3055)^+ and Ξ_c(3123)^+
• The Search for Beauty-fully Bound Tetraquarks Using Lattice Non-Relativistic QCD
• Observation of Orbitally Excited B_s Mesons
• Tetraquarks with colour-blind forces in chiral quark models
• First observation of $\eta (1405)$ decays into $f_0(980){\pi }^0$
• Looking for a hidden-charm pentaquark state with strangeness $S=-1$ from ${\Xi }_b^{-}$ decay into $J/\psi K^{-}\Lambda$
• Study of $D_J$ meson decays to $D^{+}{\pi }^{-}$, $D^0{\pi }^{+}$ and $D^{\ast +}{\pi }^{-}$ final states in pp collision
• A New Hadron Spectroscopy
• On the nature of the newly discovered ${\Omega }_c^0$ states
• Observation of Excited ${\Omega }_c$ Charmed Baryons in $e^{+}{e}^{-}$ Collisions
• The Simple Spectrum of $c\bar{c}c\bar{c}$ States in the Dynamical Diquark Model
• $X_0(2866)$ as a $D^{\ast }{\bar{K}}^{\ast }$ molecular state
• Understanding the newly observed ${\Omega }_c$ states through their decays
• Freezing of the QCD coupling constant and solutions of Schwinger-Dyson equations
• Exotic mesons with double charm and bottom flavor
• Doubly-hidden scalar heavy molecules and tetraquarks states from QCD at NLO
• Analysis of the doubly-charmed tetraquark molecular states with the QCD sum rules
• $P_c(4457{)}^{+}$, $P_c(4440{)}^{+}$, and $P_c(4312{)}^{+}$: molecules or compact pentaquarks?
• Doubly-heavy tetraquarks
• Spin-Parity Analysis of ppbar Mass Threshold Structure in J/psi and psi' Radiative Decays
• Beauty-full Tetraquarks
• Does A Narrow Tetraquark $cc\bar{u}\bar{d}$ State Exist?
• Search for structure in the $B_s^0{\pi }^{\pm }$ invariant mass spectrum
• First observation of a narrow charm-strange meson DsJ(2632) -> Ds eta and D0 K+
• Diffusion Monte Carlo calculations of fully-heavy (multiquark) bound states
• QCD sum rule calculation for P-wave bottom baryons
• Observation of overlapping spin-1 and spin-3 ${\bar{D}}^0{K}^{-}$ resonances at mass $2.86\mathrm{GeV}/c^2$
• Excited Charmed Mesons: Observations, Analyses and Puzzles
• Two-pole structures in QCD: Facts, not fantasy!
• Fully-heavy tetraquark spectra and production at hadron colliders
• Coupled-channel interpretation of the LHCb double-$J/\psi$ spectrum and hints of a new state near the $J/\psi J/\psi$ threshold
• Including heavy spin effects in the prediction of a $\bar{b}\bar{b}ud$ tetraquark with lattice QCD potentials
• Scalar Glueball in Radiative $J/\psi$ Decay on Lattice
• A study of $cc\bar{c}\bar{c}$ tetraquark decays in 4 muons and in $D^{(\ast )}{\bar{D}}^{(\ast )}$ at LHC
• X(1835) as the Lowest Mass Pseudoscalar Glueball and Proton Spin Problem
• Revisiting the nature of the $P_c$ pentaquarks
• Towards the understanding of fully-heavy tetraquark states from various models
• Can we understand the decay width of the $T_{cc}^{+}$ state?
• Masses of doubly heavy tetraquarks $T_{Q{Q}^{\prime }}$ in a relativized quark model
• Molecular picture for the $X_0(2866)$ as a $D^{\ast }{\bar{K}}^{\ast }$ $J^P=0^{+}$ state and related $1^{+},2^{+}$ states
• Status of the Proton Spin Problem
• $T_{cc}^{+}$ and its partners
• Systematics of fully heavy tetraquarks
• Glueball Mass Predictions of the Valence Approximation to Lattice QCD
• Comparison of $pp$ and $p\bar{p}$ differential elastic cross sections and observation of the exchange of a colorless $C$-odd gluonic compound
• $T_{cc}^{+}$ decays: Differential spectra and two-body final states
• Strong and radiative decays of the doubly charmed baryons
• Exotic Meson Decay to $\omega {\pi }^0{\pi }^{-}$
• Masses of the $QQ\bar{Q}\bar{Q}$ tetraquarks in the relativistic diquark--antidiquark picture
• Study of psi(2S) Decays to gamma p bar{p}, pi^0 p bar{p} and eta p bar{p} and Search for p bar{p} Threshold Enhancements
• On the nature of near-threshold bound and virtual states
• Hadron Production via e+e- Collisions with Initial State Radiation
• Measurement of the differential cross section dσ/dt in elastic $p\bar{p}$ scattering at sqrt(s)=1.96 TeV
• Towards a new paradigm for heavy-light meson spectroscopy
• Direct instantons, topological charge screening and QCD glueball sum rules
• Interpretation of the newly observed ${\Omega }_c^0$ resonances
• Observation of an isoscalar resonance with exotic $J^{PC}=1^{-+}$ quantum numbers in $J/\psi \to \gamma \eta {\eta }^{\prime }$
• Tetraquark operators in lattice QCD and exotic flavour states in the charm sector
• Strong decays of fully-charm tetraquarks into di-charmonia
• Quantum Numbers of ${\Omega }_c$ States and Other Charmed Baryons
• Interpretation of structure in the di-$J/\psi$ spectrum
• Decay of the pseudoscalar glueball into scalar and pseudoscalar mesons
• Systematics of the heavy flavor hadronic molecules
• Few-body quark dynamics for doubly-heavy baryons and tetraquarks
• Elastic differential cross-section measurement at $\sqrt{s}=13$ TeV by TOTEM
• Decays of an exotic $1^{-+}$ hybrid meson resonance in QCD
• Pseudoscalar glueball mass from $\eta$-${\eta }^{\prime }$-$G$ mixing
• Study of the $D^{0}p$ amplitude in ${\Lambda }_b^0\to D^{0}p{\pi }^{-}$ decays
• Are there compact heavy four-quark bound states?
• A lattice investigation of exotic tetraquark channels
• The $P_{cs}(4459)$ pentaquark from a combined effective field theory and phenomenological perspective
• Issues and Opportunities in Exotic Hadrons
• Light Scalar Tetraquark Mesons in the QCD Sum Rule
• The low lying glueball spectrum
• Did TOTEM experiment discover the Odderon?
• Holographic glueball structure
• $X_0(2900)$ and $X_1(2900)$: hadronic molecules or compact tetraquarks
• Predictions of charged charmonium-like structures with hidden-charm and open-strange channels
• Towards a precise determination of the scattering amplitudes of the charmed and light-flavor pseudoscalar mesons
• Strange molecular partners of the $Z_c(3900)$ and $Z_c(4020)$
• Higher bottom and bottom-strange mesons
• D-wave charmed and bottomed baryons from QCD sum rules
• Stable double-heavy tetraquarks: spectrum and structure
• Deciphering the mechanism of near-threshold $J/\psi$ photoproduction
• Charmed Baryon Weak Decays with SU(3) Flavor Symmetry
• Odd and Even Partial Waves of $\eta {\pi }^{-}$ and ${\eta }^{\prime }{\pi }^{-}$ in ${\pi }^{-}p\to {\eta }^{(\prime )}{\pi }^{-}p$ at $191\text{GeV}/c$
• Study of the Standard Model with weak decays of charmed hadrons at BESIII
• Analysis of the ${\Omega }_c(3000)$, ${\Omega }_c(3050)$, ${\Omega }_c(3066)$, ${\Omega }_c(3090)$ and ${\Omega }_c(3119)$ with QCD sum rules
• Molecular ${\Omega }_c$ states generated from coupled meson-baryon channels
• Higher radial and orbital excitations in the charmed meson family
• Possible strange hidden-charm pentaquarks from ${\Sigma }_c^{(\ast )}{\bar{D}}_s^{\ast }$ and ${\Xi }_c^{{(}^{\prime },\ast )}{\bar{D}}^{\ast }$ interactions
• The Y(2175) State in the QCD Sum Rule
• Observation and properties of the orbitally excited B_{s2}* Meson
• $P_{cs}(4459)$ and other possible molecular states from ${\Xi }_c^{(\ast )}{\bar{D}}^{(\ast )}$ and ${\Xi }_c^{\prime }{\bar{D}}^{(\ast )}$ interactions
• Masses of Doubly Heavy Tetraquarks with Error Bars
• Radiative decays of the doubly charmed baryons in chiral perturbation theory
• Doubly Heavy Tetraquarks in QCD Sum Rules
• Light isovector resonances in ${\pi }^{-}p\to {\pi }^{-}{\pi }^{-}{\pi }^{+}p$ at 190 GeV/$c$
• Observation of two resonances in the ${\Lambda }_b^0{\pi }^{\pm }$ systems and precise measurement of ${\Sigma }_b^{\pm }$ and ${\Sigma }_b^{\ast \pm }$ properties
• Hidden-charm and bottom tetra- and pentaquarks with strangeness in the hadro-quarkonium and compact tetraquark models
• The Status of Exotic-quantum-number Mesons
• Tetraquark bound states in the heavy-light heavy-light system
• Etaprime and Eta Mesons with Connection to Anomalous Glue
• New ${\Omega }_c^0$ baryons discovered by LHCb as the members of $1P$ and $2S$ states
• The ${\Lambda }_b\to J/\psi K^0\Lambda$ reaction and a hidden-charm pentaquark state with strangeness
• Discovery potentials of double-charm tetraquarks
• A New Look at the $Y$ Tetraquarks and ${\Omega }_c$ Baryons in the Diquark Model
• Scalar isoscalar mesons and the scalar glueball from radiative $J/\psi$ decays
• Dynamics of Hadronic Molecule in One-Boson Exchange Approach and Possible Heavy Flavor Molecules
• Open-charm tetraquark $X_c$ and open-bottom tetraquark $X_b$
• Scalar Fully-heavy Tetraquark States $Q{Q}^{\prime }\bar{Q}\overline{Q^{\prime }}$ in QCD Sum Rules
• Interpretation of the new ${\Omega }_c^0$ states via their mass and width
• Heavy quark symmetry in multi-hadron systems
• On the mechanism of $T_{4c}(6900)$ tetraquark production
• Newly observed exotic doubly charmed meson $T_{cc}^{+}$
• Double-heavy tetraquark states with heavy diquark-antiquark symmetry
• $QQ\bar{q}\bar{q}$ in a chiral constituent quark model
• $D{D}^{\ast }$ potentials in chiral perturbation theory and possible molecular states
• Elastic differential cross-section $\mathrm{d}\sigma /\mathrm{d}t$ at $\sqrt{s}=$2.76 TeV and implications on the existence of a colourless 3-gluon bound state
• Non-strange and strange pentaquarks with hidden charm
• Hadronic molecules in B decays
• Novel coupled channel framework connecting quark model and lattice QCD: an investigation on near-threshold $D_s$ states
• $ud\bar{b}\bar{b}$ tetraquark resonances with lattice QCD potentials and the Born-Oppenheimer approximation
• Gluonic Tetracharm Configuration of $X(6900)$
• First observation and amplitude analysis of the $B^{-}\to D^{+}{K}^{-}{\pi }^{-}$ decay
• Partial wave analyses of J/psi to gamma pi^+ pi^- and gamma pi^0 pi^0
• Analysis of the ${\frac{1}{2}}^{\pm }$ pentaquark states in the diquark-diquark-antiquark model with QCD sum rules
• Fully-heavy tetraquarks in strongly interacting medium
• Study of orbitally excited $B$ mesons and evidence for a new $B\pi$ resonance
• Molecular nature of $P_{cs}(4459)$ and its heavy quark spin partners
• Glueballs, closed fluxtubes and eta(1440)
• Observation of new resonances in the ${\Lambda }_b^0{\pi }^{+}{\pi }^{-}$ system
• Lattice calculation of $1^{-+}$ hybrid mesons with improved Kogut-Susskind fermions
• Search for $bb\bar{b}\bar{b}$ tetraquark decays in 4 muons, $B^{+}{B}^{-}$, $B^0{\bar{B}}^0$ and $B_s^0{\bar{B}}_s^0$ channels at LHC
• Observation of new ${\Xi }_c^0$ baryons decaying to ${\Lambda }_c^{+}{K}^{-}$
• $Z_{cs}(3985{)}^{-}$ as the $U$-spin partner of $Z_c(3900{)}^{-}$ and implication of other states in the ${\text{SU(3)}}_F$ symmetry and heavy quark symmetry
• Possibility of the existence of charmed exotica
• A hidden-charm $S=-1$ pentaquark from the decay of ${\Lambda }_b$ into $J/\psi \eta \Lambda$
• Light Hybrid Mesons in QCD
• Analysis of the $X_0(2900)$ as the scalar tetraquark state via the QCD sum rules
• First exotic hadron with open heavy flavor: $cs\bar{u}\bar{d}$ tetraquark
• Effective range expansion for narrow near-threshold resonances
• $D_s{D}^{\ast }$ molecule as an axial meson
• Observation of a new excited beauty strange baryon decaying to ${\Xi }_{\mathrm{b}}^{-}{\pi }^{+}{\pi }^{-}$
• Strong decays of ${\bar{D}}^{\ast }{K}^{\ast }$ molecules and the newly observed $X_{0,1}$ states
• Triangle singularity as the origin of $X_0(2900)$ and $X_1(2900)$ observed in $B^{+}\to D^{+}{D}^{-}{K}^{+}$
• $0^{+}$ fully-charmed tetraquark states
• Strong and radiative decays of the low-lying $D$-wave singly heavy baryons
• Nonrelativistic Treatment of Fully-Heavy Tetraquarks as Diquark-Antidiquark States
• Predicting another doubly charmed molecular resonance $T_{cc}^{\prime +}(3876)$
• QCD sum rule study of hidden-charm pentaquarks
• Evidence for an ${\eta }_c(1S){\pi }^{-}$ resonance in $B^0\to {\eta }_c(1S)K^{+}{\pi }^{-}$ decays
• Can the newly $P_{cs}(4459)$ be a strange hidden-charm ${\Xi }_c{\bar{D}}^{\ast }$ molecular pentaquarks?
• Role of newly discovered ${\Xi }_b(6227{)}^{-}$ for constructing excited bottom baryon family
• Tetraquark state $X(6900)$ and the interaction between diquark and antidiquark
• Can discovery of hidden charm strange pentaquark states help determine the spins of $P_c(4440)$ and $P_c(4457)$?
• Search for beautiful tetraquarks in the ${\rm Y}(1S)\mu \mu$ invariant-mass spectrum
• Monte Carlo study of glueball masses in the Hamiltonian limit of SU(3) lattice gauge theory
• Analysis of the axialvector doubly heavy tetraquark states with QCD sum rules
• About the exotic structure of $Z_{cs}$
• Subleading contributions to the decay width of the $T_{cc}^{+}$ tetraquark
• Measurement of the ${\rm Y}$(1S) pair production cross section and search for resonances decaying to ${\rm Y}$(1S)${\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Strong decays of newly observed $D_{sJ}$ states in a constituent quark model with effective Lagrangians
• Open charm and bottom tetraquarks in an extended relativized quark model
• Analysis of the $P_{cs}(4459)$ as the hidden-charm pentaquark state with QCD sum rules
• Decay chain information on the newly discovered double charm baryon state ${\Xi }_{cc}^{++}$
• Tetraquark candidates in the LHCb's di-$J/\psi$ mass spectrum
• A study of Bbar -> Xi_c Lambda_c^- and Bbar -> Lambda_c^+ Lambda_c^- Kbar decays at BABAR
• Partial wave analysis of $J/\psi \to \gamma \eta \eta$
• A meson-baryon molecular interpretation for some ${\Omega }_c$ excited baryons
• An amplitude analysis of the ${\pi }^0{\pi }^0$ system produced in radiative $J/\psi$ decays
• Hadronic molecule interpretation of $T_{cc}^{+}$ and its beauty-partners
• Hadronic decay properties of newly observed ${\Omega }_c$ baryons
• The scalar and tensor glueballs in the valence approximation
• Searching for possible ${\Omega }_c-$like molecular states from ${\Xi }_c^{\ast }\bar{K}/{\Xi }_c{\bar{K}}^{\ast }/{\Xi }_c^{\prime }{\bar{K}}^{\ast }$ interaction
• Why Hybrid Meson Coupling to Two S-wave Mesons is Suppressed
• Insights into the inner structures of the fully charmed tetraquark state $X(6900)$
• Nonchiral enhancement of scalar glueball decay in the Witten-Sakai-Sugimoto model
• Doubly heavy baryons at LHC
• Pionic transitions from X(3872) to chi_{cJ}
• Exotic Tetraquark ud bar[s] bar[s] of J^P=0^+ in the QCD Sum Rule
• Observation and Properties of L=1 B_1 and B_2* Mesons
• Magnetic dipole moments of the hidden-charm pentaquark states: $P_c(4440)$, $P_c(4457)$ and $P_{cs}(4459)$
• Light-Meson Spectroscopy with COMPASS
• Glueball mass measurements from improved staggered fermion simulations
• Nature of $X(6900)$ and its production mechanism at LHCb
• Search for the X(5568) state decaying into ${\mathrm{B}}_{\mathrm{s}}^0{\pi }^{\pm }$ in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Black disk, maximal Odderon and unitarity
• Interpretation of the newly observed ${\Sigma }_b(6097{)}^{\pm }$ and ${\Xi }_b(6227{)}^{-}$ states as the $P$-wave bottom baryons
• Is the existence of a $J/\psi J/\psi$ bound state plausible?
• QCD sum rule Study of the $d^{\ast }(2380)$
• Molecular states from $D^{(\ast )}{\bar{D}}^{(\ast )}/B^{(\ast )}{\bar{B}}^{(\ast )}$ and $D^{(\ast )}{D}^{(\ast )}/{\bar{B}}^{(\ast )}{\bar{B}}^{(\ast )}$ interactions
• Magnetic dipole moments of the $T_{cc}^{+}$ and $Z_V^{++}$ tetraquark states
• Description of the ${\Xi }_c$ and ${\Xi }_b$ states as molecular states
• A study of the decays of $S-$wave ${\bar{D}}^{\ast }{K}^{\ast }$ hadronic molecules: the scalar $X_0(2900)$ and its spin partners $X_{J(J=1,2)}$
• Magnetic moments and transition magnetic moments of $P_c$ and $P_{cs}$ states
• Evidence of New States Decaying into ${\Xi }_c^{\ast }\pi$
• Study of charmonium-like and fully-charm tetraquark spectroscopy
• Hidden charm tetraquark states in a diquark model
• Observation of an anomalous line shape of the ${\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ mass spectrum near the $p\bar{p}$ mass threshold in $J/\psi \to \gamma {\eta }^{\prime }{\pi }^{+}{\pi }^{-}$
• $1^{-+}$ exotic meson at light quark masses
• The observed ${\Omega }_c^0$ resonances as pentaquark states
• Systematic studies of charmonium-, bottomonium-, and $B_c$-like tetraquark states
• Observation of a ppb mass threshoud enhancement in ψ^\prime\toπ^+π^-J/ψ(J/ψ\toγp\bar{p}) decay
• Charmed baryon spectrum from lattice QCD near the physical point
• The $X_0(2900)$ and its heavy quark spin partners in molecular picture
• Spectrum and rearrangement decays of tetraquark states with four different flavors
• Decays of $J/\psi$ and ${\psi }^{\prime }$ into vector and pseudoscalar meson and the pseudoscalar glueball-$q\bar{q}$ mixing
• Partial Wave Analysis of $J/\psi \to \gamma ({\pi }^{+}{\pi }^{-}{\pi }^{+}{\pi }^{-})$
• $X_{0,1}$(2900) and $(D^{-}{K}^{+})$ invariant mass from QCD Laplace sum rules at NLO
• Doubly heavy tetraquarks in an extended chromomagnetic model
• Elastic and diffractive scattering at the LHC
• QCD Sum Rule Study of the Masses of Light Tetraquark Scalar Mesons
• Possible Molecular States of $D^{(\ast )}{D}^{(\ast )}$ and $B^{(\ast )}{B}^{(\ast )}$ within the Bethe-Salpeter framework
• Analysis of the $Z_{cs}(3985)$ as the axialvector tetraquark state
• Relation between $T_{cc,bb}$ and $X_{c,b}$ from QCD
• Elastic proton-proton scattering at 13 TeV
• Mass spectrum and strong decays of tetraquark $\bar{c}\bar{s}qq$ states
• From the lineshape of the $X(3872)$ to its structure
• Lattice QCD study of doubly-charmed strange baryons
• Strong decays of the newly $P_{cs}(4459)$ as a strange hidden-charm ${\Xi }_c{\bar{D}}^{\ast }$ molecule
• The I^G J^{PC}=1^- 1^{-+} Tetraquark States
• Partial wave analysis of $J/\psi \to \gamma \eta {\eta }^{\prime }$
• A possible 0^{-+} glueball candidate X(1835)
• What can we learn from the electromagnetic properties of hidden-charm molecular pentaquarks with single strangeness?
• Mass spectra of doubly heavy tetraquarks in an improved chromomagnetic interaction model
• Novel approaches in Hadron Spectroscopy
• Oddballs and a Low Odderon Intercept
• 1^{-+} light exotic mesons in QCD
• Exotic resonances of fully-heavy tetraquarks in a lattice-QCD insipired quark model
• The production of doubly charmed exotic hadrons in heavy ion collisions
• Odderon effects in the differential cross-sections at Tevatron and LHC energies
• Glueball scattering cross section in lattice SU(2) Yang-Mills theory
• Observation and Spin-Parity Determination of the $X(1835)$ in $J/\psi \to \gamma K_S^0{K}_S^0\eta$
• Chiral Properties of Baryon Fields with Flavor SU(3) Symmetry
• The Doubly-heavy Tetraquarks ($q{q}^{\prime }\bar{Q}\overline{Q^{\prime }}$) in a Constituent Quark Model with a Complete Set of Harmonic Oscillator Bases
• Estimates of W-exchange contributions to ${\Xi }_{cc}$ decays
• Finding the $0^{--}$ Glueball
• Z_c -like spectra from QCD Laplace sum rules at NLO
• Fixed Point Gauge Actions with Fat Links: Scaling and Glueballs
• Assigning the newly reported ${\Sigma }_b(6097)$ as a $P$-wave excited state and predicting its partners
• Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
• The mass spectrum and strong decays of isoscalar tensor mesons
• Precision measurement of the ${\Xi }_{cc}^{++}$ mass
• $Z_{cs}(3985{)}^{-}$: a strange hidden-charm tetraquark resonance or not?
• Decoding the nature of $Z_{cs}(3985)$ and establishing the spectrum of charged heavy quarkoniumlike states in chiral effective field theory
• Hunting for states in the recent LHCb di-$J/\psi$ invariant mass spectrum
• Observation of a new ${\Xi }_b^0$ state
• Mass spectra and wave functions of $T_{QQ\bar{Q}\bar{Q}}$ tetraquarks
• Heavy-strange meson molecules and possible candidates $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, and $X_0(2900)$
• The Hydrogen Bond of QCD in Doubly Heavy Baryons and Tetraquarks
• Isospin-1/2 $D\pi$ scattering and the lightest $D_0^{\ast }$ resonance from lattice QCD
• Strong decays of exotic and non-exotic heavy baryons in the chiral quark-soliton model
• The strange partner of the $Z_c$ structures in a coupled-channels model
• Evidence for a bottom baryon resonance Lambda_b* in CDF data
• Prediction of new $T_{cc}$ states of $D^{\ast }{D}^{\ast }$ and $D_s^{\ast }{D}^{\ast }$ molecular nature
• New scalar resonance $X_0(2900)$ as a ${\overline{D}}^{\ast }{K}^{\ast }$ molecule: Mass and width
• 0^-+ Trigluon Glueball and its Implication for a Recent BES Observation
• Study of excited ${\Lambda }_{\mathrm{b}}^0$ states decaying to ${\Lambda }_{\mathrm{b}}^0{\pi }^{+}{\pi }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Exotic mesons from quantum chromodynamics with improved gluon and quark actions on the anisotropic lattice
• The possible tetraquark states $cc\bar{c}\bar{c}$ observed by the LHCb experiment
• Amplitude analysis of the $K_S{K}_S$ system produced in radiative $J/\psi$ decays
• An open charm tetraquark candidate: note on $X_0(2900)$
• Producing fully-charm structures in the $J/\psi$-pair invariant mass spectrum
• Doubly heavy tetraquarks in a chiral-diquark picture
• Bottom Baryon Decays to Pseudoscalar Meson and Pentaquark
• Decay behaviors of possible ${\Lambda }_{c\bar{c}}$ states in hadronic molecule pictures
• How to Search for Doubly Charmed Baryons and Tetraquarks
• Observation of a new baryon state in the ${\Lambda }_b^0{\pi }^{+}{\pi }^{-}$ mass spectrum
• Production of $P_{cs}(4459)$ from ${\Xi }_b$ decay
• Hadron Spectroscopy: Theory and Experiment
• Investigating the excited ${\Omega }_c^0$ states through ${\Xi }_{c}K$ and ${\Xi }_c^{{}^{\prime }}K$ decay channels
• Investigation of $P_{cs}(4459{)}^0$ pentaquark via its strong decay to $\Lambda J/\Psi$
• Search for a Structure in the $B_s^0{\pi }^{\pm }$ Invariant Mass Spectrum with the ATLAS Experiment
• A search for the exotic meson $X(5568)$ with the Collider Detector at Fermilab
• The $Z_{cs}(3985)$ as a threshold effect from the ${\bar{D}}_s^{\ast }D+{\bar{D}}_s{D}^{\ast }$ interaction
• Observation of excited ${\Omega }_c^0$ baryons in ${\Omega }_b^{-}\to {\Xi }_c^{+}{K}^{-}{\pi }^{-}$ decays
• Kinematical Cusp and Resonance Interpretations of the $X(2900)$
• Scalar Gluonium and Instantons
• $0^{++}$-Glueball/$q\bar{q}$-State Mixing in the Mass Region near 1500 MeV
• Identifying the ${\Xi }_b(6227)$ and ${\Sigma }_b(6097)$ as $P$-wave bottom baryons of $J^P=3/2^{-}$
• $D$-wave heavy baryons of the $SU(3)$ flavor $6_F$
• Compositeness of S-wave weakly-bound states from next-to-leading order Weinberg's relations
• Deciphering the recently discovered tetraquark candidates around 6.9 GeV
• How to understand the $X(2900)$?
• Molecular picture for $X_0(2900)$ and $X_1(2900)$
• Higher fully-charmed tetraquarks: Radial excitations and P-wave states
• Gluonium nature of the sigma/f_0(600) from its coupling to KK
• Hybrid meson properties in Lattice QCD and Flux Tube Models
• Investigation of hidden-charm pentaquarks with strangeness $S=-1$
• Masses of J^PC =1^-+ exotic quarkonia in a Bethe-Salpeter-equation approach
• Newly observed ${\Lambda }_c(2860{)}^{+}$ at LHCb and its \emph{D}-wave partners ${\Lambda }_c(2880{)}^{+}$, ${\Xi }_c(3055{)}^{+}$ and ${\Xi }_c(3080{)}^{+}$
• Radiative transitions of doubly charmed baryons in lattice QCD
• Single heavy baryons with chiral partner structure in a three-flavor chiral model
• Discriminating among interpretations for the $X(2900)$ states
• Exclusive radiative production of fully-charmed tetraquarks at $B$ Factory
• Some remarks on $X(6900)$
• Observation of ${\Xi }_c(2930{)}^0$ and updated measurement of $B^{-}\to K^{-}{\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ at Belle
• Generalized weak-binding relations of compositeness in effective field theory
• Branching fractions of $B^{-}\to D^{-}{X}_{0,1}(2900)$ and their implications
• Odderon and proton substructure from a model-independent Levy imaging of elastic $pp$ and $p\bar{p}$ collisions
• Evidence of New States Decaying into ${\Xi }_c^{\prime }\pi$
• Predicition for the decay width of a charged state near the $D_s{\bar{D}}^{\ast }/D_s^{\ast }\bar{D}$ threshold
• ${\Xi }_c$ and ${\Xi }_b$ excited states within a ${\mathrm{SU}(6)}_{\mathrm{lsf}}\times$HQSS model
• Toward charged $Z_{cs}(3985)$ structure under a reflection mechanism
• Study of the pseudoscalar glueball in $J/\psi$ radiative decays
• Analysis of the semileptonic and nonleptonic two-body decays of the double heavy charm baryon states ${\Xi }_{cc}^{++},{\Xi }_{cc}^{+}$ and ${\Omega }_{cc}^{+}$
• Glueball spectrum from $N_f=2$ lattice QCD study on anisotropic lattices
• Fully-heavy tetraquark production by $\gamma \gamma$ interactions in hadronic collisions at the LHC
• Strong and radiative decays of DΞmolecular state and newly observed ${\Omega }_c$ states
• Determination of the scalar glueball mass in QCD sum rules
• Improved Determination of the Mass of the $1^{-+}$ Light Hybrid Meson From QCD Sum Rules
• Pseudoscalar production at omega omega threshold in J/psi -> gamma omega omega
• Mass-spectra of singly, doubly, and triply bottom baryons
• Gluons in glueballs: Spin or helicity?
• A possible partner state of the $Y(2175)$
• Building up the spectrum of pentaquark states as hadronic molecules
• Study of the near-threshold $\omega \varphi$ mass enhancement in doubly OZI suppressed $J/\psi \to \gamma \omega \varphi$ decays
• Multiplicity of the doubly charmed state $T_{cc}^{+}$ in heavy-ion collisions
• Exotic ${\bar{D}}_s^{(\ast )}{D}^{(\ast )}$ molecular states and $sc\bar{q}\bar{c}$ tetraquark states with $J^P=0^{+},1^{+},2^{+}$
• Doubly Heavy Tetraquark Resonant States
• Possible structure of the newly found exotic state ${\eta }_1(1855)$
• Towards the establishment of the light $J^{P(C)}=1^{-(+)}$ hybrid nonet
• Four-quark states with charm quarks in a two-body Bethe-Salpeter approach
• Evidence of Odderon-exchange from scaling properties of elastic scattering at TeV energies
• Regge behaviors in orbitally excited spectroscopy of charmed and bottom baryons
• Four-quark states from functional methods
• Hidden charm pentaquark states in a diquark model
• Heavy Hybrids with Constituent Gluons
• The Odderon in High Energy Elastic pp Scattering
• Colour and baryon number fluctuation of preconfinement system in production process and T_cc structure
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Odderon and Pomeron from the Vacuum Correlator Method
• Amplitude analyses of the decays chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-
• Open charm meson spectroscopy: Where to place the latest piece of the puzzle
• Open-flavor charmed/bottom $sq\bar{q}\bar{Q}$ and $qq\bar{q}\bar{Q}$ tetraquark states
• Heavy Baryons and their Exotics from Instantons in Holographic QCD
• J^PC Exotic Mesons from the Bethe-Salpeter Equation
• Two-body weak decays of doubly charmed baryons
• Exploring possible triangle singularities in the ${\Xi }_b^{-}\to K^{-}J/\psi \Lambda$ decay
• Relativistic corrections to decays of heavy baryons in the quark model
• Where is the lightest charmed scalar meson?
• Analysis of hidden-bottom bb\bar{b}\bar{b} states
• Identification of the newly observed ${\Sigma }_b(6097{)}^{\pm }$ baryons from their strong decays
• $P$-wave charmed baryons of the $SU(3)$ flavor $6_F$
• The I^G J^{PC}=0^+ 1^{-+} Tetraquark State
• A combined analysis of the $Z_c(3900)$ and the $Z_{cs}(3985)$ exotic states
• Production of the $T_{cc}^{+}$ state in the $\gamma p\to D^{+}{\bar{T}}_{cc}^{-}{\Lambda }_c^{+}$ reaction
• The $\mathbf{sQ}\bar{\mathbf{q}}\bar{\mathbf{q}}$ $(\mathbf{q}=\mathbf{u},\mathbf{d};\mathbf{Q}=\mathbf{c},\mathbf{b})$ tetraquarks in the chiral quark model
• Axial meson exchange and the $Z_c(3900)$ and $Z_{cs}(3985)$ resonances as heavy hadron molecules
• Charmonium and Charmoniumlike States at the BESIII Experiment
• The phenomenology of the exotic hybrid nonet with ${\pi }_1(1600)$ and ${\eta }_1(1855)$
• The JPC=1-+ hunting season at VES
• Interpretation of the observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ states as 1$D$ bottom baryons
• Higher spin glueballs from functional methods
• Strange hadrocharmonium
• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules
• Anomalous dimensions and scalar glueball spectroscopy in AdS/QCD
• Mass behavior of hidden-charm pentaquarks with open-strange inspired by these established $P_c$ molecular states
• Tetraquarks with open charm favor
• Observation of the doubly charmed baryon decay ${\Xi }_{cc}^{++}\to {\Xi }_c^{{}^{\prime }+}{\pi }^{+}$
• QCD axial anomaly enhances the $\eta {\eta }^{\prime }$ decay of the hybrid candidate ${\eta }_1(1855)$
• Structure of the ${\Xi }_b(6227{)}^{-}$ Resonance
• Mass Spectra of $0^{+-}$, $1^{-+}$, and $2^{+-}$ Exotic Glueballs
• Singlet-octet-glueball mixing of scalar mesons
• Hidden and doubly heavy molecular states from interactions $D_{(s)}^{(\ast )}{\bar{D}}_s^{(\ast )}$/$B_{(s)}^{(\ast )}{\bar{B}}_s^{(\ast )}$ and $D_{(s)}^{(\ast )}{D}_s^{(\ast )}$/$B_{(s)}^{(\ast )}{B}_s^{(\ast )}$
• Strong Decays of observed ${\Lambda }_c$ Baryons in the ${}^3{P}_0$ Model
• A unified description of the hidden-charm tetraquark states $Z_{cs}(3985)$, $Z_c(3900)$ and $X(4020)$
• Interpretation of the newly observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ states in a chiral quark model
• Hidden-charm tetraquarks with strangeness in the chiral quark model
• Discovery potential for the LHCb fully-charm tetraquark $X(6900)$ state via $\bar{p}p$ annihilation reaction
• Pomeron/glueball and odderon/oddball trajectories
• Magnetic dipole moment of the $Z_{cs}(3985)$ state: diquark-antidiquark and molecular pictures
• All-charm tetraquark in front form dynamics
• Triangle Singularity in the Production of $T_{cc}^{+}$(3875) and a Soft Pion
• Holography Inspired Stringy Hadrons
• Study of the $X^{\pm }(5568)$ state with semileptonic decays of the $B_s^0$ meson
• $D\Xi$ and $D^{\ast }\Xi$ Molecular States from One Boson Exchange
• Observation of two new excited ${\Xi }_b^0$ states decaying to ${\Lambda }_b^0{K}^{-}{\pi }^{+}$
• Importance of meson-meson and of diquark-antidiquark creation operators for a $\bar{b}\bar{b}ud$ tetraquark
• Baryon Fields with U_L(3) \times U_R(3) Chiral Symmetry: Axial Currents of Nucleons and Hyperons
• Electromagnetic form factors of spin 1/2 doubly charmed baryons
• Decay properties of $P$-wave heavy baryons accompanied by vector mesons within light-cone sum rules
• ${\Omega }_c$ excited states within a ${\mathrm{SU}(6)}_{\mathrm{lsf}}\times$HQSS model
• Molecular ${\Omega }_b$ states
• Study on ${\Xi }_{cc}\to {\Xi }_c$ and ${\Xi }_{cc}\to {\Xi }_c^{\prime }$ weak decays in the light-front quark model
• Investigating new type of doubly-charmed molecular tetraquarks composed of the charmed meson in $H$-doublet and the charmed meson in $T$-doublet
• Determination of quantum numbers for several excited charmed mesons observed in $B^{-}\to D^{\ast +}{\pi }^{-}{\pi }^{-}$ decays
• Strong decays of the ${\Xi }_b(6227)$ as a ${\Sigma }_b\bar{K}$ molecule
• The lineshape of the compact fully heavy tetraquark
• Observation of a new excited $D_s^{+}$ meson in $B^0\to D^{-}{D}^{+}{K}^{+}{\pi }^{-}$ decays
• Observation of the $X(2370)$ and search for the $X(2120)$ in $J/\psi \to \gamma K\bar{K}{\eta }^{\prime }$
• Two-loop calculations for the propagators of gluonic currents. Erratum
• Strong decays of double-charmed pseudoscalar and scalar $cc\overline{u}\overline{d}$ tetraquarks
• Evidence of a structure in ${\bar{K}}^0{\Lambda }_c^{+}$ consistent with a charged ${\Xi }_c(2930{)}^{+}$, and updated measurement of ${\bar{B}}^0\to {\bar{K}}^0{\Lambda }_c^{+}{\bar{\Lambda }}_c^{-}$ at Belle
• Correlation of the hidden-charm molecular tetraquarks and the charmoniumlike structures existing in the $B\to XYZ+K$
• Universal behavior of mass gaps existing in the single heavy baryon family
• The Strong Decay Patterns of the $1^{-+}$ Exotic Hybrid Mesons
• Mass Spectra and Decay Properties of Singly Heavy Bottom-Strange Baryons
• Precise measurements of the properties of the B_1(5721)^(0,+) and B_2*(5747)^(0,+) states and observation of B^(+,0) pi^(-,+) mass structures
• Towards a Heavy Diquark Effective Theory for Weak Decays of Doubly Heavy Baryons
• Masses and widths of the exotic molecular $B_{(s)}^{(\ast )}{B}_{(s)}^{(\ast )}$ states
• Canonical interpretation of the newly observed ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ via strong decay behaviors
• Heavy flavor molecular states with strangeness
• Spectroscopy of all charm tetraquark states
• Some properties of the newly observed X(1835) state at BES
• The Decay Properties of the 1^{-+} Hybrid State
• Understanding the newly observed ${\Xi }_c^0$ states through their decays
• First Determination of the Spin and Parity of a Charmed-Strange Baryon, ${\Xi }_c(2970{)}^{+}$
• Is $Z_{cs}(3982)$ a molecular partner of $Z_c(3900)$ and $Z_c(4020)$ states?
• Pole analysis on the doubly charmed meson in $D^0{D}^0{\pi }^{+}$ mass spectrum
• Constructing Hybrid Baryons with Flux Tubes
• Observation of a state $X(2600)$ in the ${\pi }^{+}{\pi }^{-}{\eta }^{\prime }$ system in the process $J/\psi \to \gamma {\pi }^{+}{\pi }^{-}{\eta }^{\prime }$
• Investigation of the possible $D{\bar{D}}^{\ast }$/$B{\bar{B}}^{\ast }$ and $D{D}^{\ast }$/$\bar{B}{\bar{B}}^{\ast }$ molecule states
• Strong decays of the newly observed narrow ${\Omega }_b$ structures
• Mass spectra and decays of open-heavy tetraquark states
• The quasi-fission phenomeonon of double charm $T_{cc}^{+}$ induced by nucleon
• Meson and glueball spectroscopy within the graviton soft wall model
• Lattice Study of Radiative $J/\psi$ Decay to a Tensor Glueball
• Hadron Interactions for Arbitrary Energies and Species, with Applications to Cosmic rays
• ${\bar{D}}_s^{(\ast )}{D}^{(\ast )}$ molecular state with $J^P=1^{+}$
• Possible interpretation of the newly observed ${\Omega }_b$ states
• Fragmentation fractions of two-body b-baryon decays
• Doubly charmed tetraquarks in a diquark-antidiquark model
• Photoproduction of strange hidden-charm and hidden-bottom states
• Compact hidden charm pentaquark states and QCD isomers
• The newly observed $Z_{cs}(3985{)}^{-}$ state: in vacuum and a dense medium
• Is $X(7200)$ the heavy anti-quark diquark symmetry partner of $X(3872)$?
• The Possible J^{PC}=0^{--} Exotic State
• Towards establishing an abundant $B$ and $B_s$ spectrum up to the second orbital excitations
• Two-gluon and trigluon glueballs from dynamical holography QCD
• Hunting for tetraquarks in ultra-pheripheral heavy ion collisions
• Glueballs and Mesons: the Ground States
• Exotic fully-heavy $Q\bar{Q}Q\bar{Q}$ tetraquark states in $8_{[Q\bar{Q}]}\otimes 8_{[Q\bar{Q}]}$ color configuration
• What can we learn about light-meson interactions at electron-positron colliders?
• Doubly heavy tetraquark states $cc\bar{u}\bar{d}$ and $bb\bar{u}\bar{d}$
• A novel interpretation of the "${\Theta }^{+}(1540)$ pentaquark" peak
• Exotic glueball $0^{\pm -}$ states in QCD Sum Rules
• Model independent analysis of coupled-channel scattering: a deep learning approach
• New Perspective on Hybrid Mesons
• The Glueball Spectrum from a Potential Model
• The Phillips - Barger model for the elastic cross section and the Odderon
• Configuration mixing in strange tetraquarks $Z_{cs}$
• Hidden-charm pentaquark states through the current algebra: From their productions to decays
• Interactions of the doubly charmed state $T_{cc}^{+}$ with a hadronic medium
• X_1(2900) as a D_1 K molecule
• NLO results with operator mixing for fully heavy tetraquarks in QCD sum rules
• Masses of fully-heavy tetraquark states from a four-quark static potential model
• Virtual states and generalized completeness relation in the Friedrichs Model
• Possible open-charmed pentaquark molecule ${\Omega }_c(3188)$ --- the $D\Xi$ bound state --- in the Bethe-Salpeter formalism
• Fully-heavy structures in the invariant mass spectrum of $J/\psi \psi (3686)$, $J/\psi \psi (3770)$, $\psi (3686)\psi (3686)$, and $J/\psi {\rm Y}(1S)$ at hadron colliders
• Curing the unphysical behaviour of NLO quarkonium production at the LHC and its relevance to constrain the gluon PDF at low scales
• A new group of doubly charmed molecule with $T$-doublet charmed meson pair
• Exotic $J^{PC}=1^{-+}$ mesons in a holographic model of QCD
• QCD sum rule studies on the $ss\bar{s}\bar{s}$ tetraquark states with $J^{PC}=1^{+-}$
• Canonical interpretations of the newly observed ${\Xi }_c(2923{)}^0$, ${\Xi }_c(2939{)}^0$ and ${\Xi }_c(2965{)}^0$ resonances
• Vector resonance $X_1(2900)$ and its structure
• ${\eta }_c$ mixing effects on charmonium and $B$ meson decays
• Strong decays of the low-lying bottom strange baryons
• Toward establishing the low-lying $P$-wave ${\Sigma }_b$ states
• Monte-Carlo Based QCD Sum Rules Analysis of $X_0(2900)$ and $X_1(2900)$
• Elastic proton-proton scattering at LHC energies in holographic QCD
• Semirelativistic potential model for three-gluon glueballs
• X(6200) as a compact tetraquark in the QCD string model
• Strange hidden-charm tetraquarks in constituent quark models
• Decay behaviors of the fully-bottom and fully-charm tetraquark states
• Magnetic dipole moments of the $Z_c(4020{)}^{+}$, $Z_c(4200{)}^{+}$, $Z_{cs}(4000{)}^{+}$ and $Z_{cs}(4220{)}^{+}$ states in light-cone QCD
• The exotic meson ${\pi }_1(1600)$ with $J^{PC}=1^{-+}$ and its decay into $\rho (770)\pi$
• Heavy baryon spectrum with chiral multiplets of scalar and vector diquarks
• The resonances $X(4140)$, $X(4160)$, and $P_{cs}(4459)$ in the decay of ${\Lambda }_b\to J/\psi \Lambda \varphi$
• Constituent gluon interpretation of glueballs and gluelumps
• Dispersive analysis of glueball masses
• Magnetic moments of the doubly charged axial-vector $T_{cc}^{++}$ states
• Roper-like resonances with various flavor contents and their two-pion emission decays
• Exotic Hybrid Quark Potentials
• Toward the existence of odderon as a three-gluon bound state
• Fragmentation-fraction ratio $f_{{\Xi }_b}/f_{{\Lambda }_b}$ in $b$- and $c$-baryon decays
• Baryon Fields with U_L(3) times U_R(3) Chiral Symmetry III: Interactions with Chiral (3,3_bar)+(3_bar,3) Spinless Mesons
• A broad pseudovector glueball from holographic QCD
• A suggested search for doubly charmed baryons of $J^P=3/2^{+}$ via their electromagnetic transitions
• Gluelump Spectrum in the Bag Model
• Flux Tube Zero-Point Motion, Hadronic Charge Radii, and Hybrid Meson Production Cross Sections
• Identifying the ${\Xi }_c^0$ baryons observed by LHCb as $P$-wave ${\Xi }_c^{\prime }$ baryons
• The doubly charmed strange tetraquark
• Observed ${\Omega }_b$ spectrum and meson-baryon molecular states
• Implications of chiral symmetry on $S$-wave pionic resonances and the scalar charmed mesons
• Revisiting the b1 pi and rho pi decay modes of the 1-+ light hybrid state with light-cone QCD sum rules
• The $D_{s0}(2590{)}^{+}$ as the dressed $c\bar{s}(2^1{S}_0)$ meson in a coupled-channels calculation
• $a_1(1420)$ resonance as a tetraquark state and its isospin partner
• Baryons with U_L(3)*U_R(3) Chiral Symmetry IV: Interactions with Chiral (8,1)+(1,8) Vector and Axial-vector Mesons and Anomalous Magnetic Moments
• Decay properties of $P_c$ states through the Fierz rearrangement
• Searching for the Odderon in Ultraperipheral Proton--Ion Collisions at the LHC
• Revisit assignments of the new excited ${\Omega }_c$ states with QCD sum rules
• Glueballs as rotating folded closed strings
• Investigation of the stability for fully-heavy $bc\bar{b}\bar{c}$ tetraquark states
• $b$-hadron spectroscopy study based on the similarity of double bottom baryon and bottom meson
• The new $P_{\mathrm{cs}}(4459)$, $Z_{\mathrm{cs}}(3985)$, $Z_{\mathrm{cs}}(4000)$ and $Z_{\mathrm{cs}}(4220)$ and the possible emergence of flavor pentaquark octets and tetraquark nonets
• Present status on experimental search for pentaquarks
• Interpretation of excited ${\Omega }_b$ signals
• The ${\bar{B}}^0\to D^{\ast +}{\bar{D}}^{\ast 0}{K}^{-}$ reaction to detect the $I=0,J^P=1^{+}$ partner of the $X_0(2866)$
• Excited ${\Omega }_b$ baryons and fine structure of strong interaction
• Threshold effects as the origin of $Z_{cs}(4000)$, $Z_{cs}(4220)$ and $X(4700)$ observed in $B^{+}\to J/\psi \varphi K^{+}$
• $Z_c(4100)$ and $Z_c(4200)$ as hadrocharmonium
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects
• A Study of Excited ${\Omega }_b^{-}$ States in Hypercentral Constituent Quark Model via Artificial Neural Network
• Hybrid States from Constituent Glue Model
• Pair structure of heavy tetraquark systems
• The nature of charged charmonium-like states $Z_c(3900)$ and its strange partner $Z_{cs}(3982)$
• Prediction of possible $D{K}_1$ bound states
• Inclusive production of fully-charmed $1^{+-}$ tetraquark at $\mathbf{B}$ factory
• Mass Predictions of Vector ($1^{--}$) Double-gluon Heavy Quarkonium Hybrids from QCD Sum Rules
• Di-Gluonium Sum Rules, I = 0 Scalar Mesons and Conformal Anomaly
• Light Scalar Meson sigma(600) in QCD Sum Rule with Continuum
• Production of hidden-charm strange pentaquarks $P_{cs}$ from the $K^{-}p\to J/\psi \Lambda$ reaction
• Narrow pentaquarks as diquark-diquark-antiquark systems
• Improved XTZ masses and mass ratios from Laplace Sum Rules at NLO
• Chiral Baryon Fields in the QCD Sum Rule
• ${\Lambda }_b(6146{)}^0$ state newly observed by LHCb
• QCD sum rule studies on the $ss\bar{s}\bar{s}$ tetraquark states of $J^{PC}=0^{-+}$
• The bosonic algebraic approach applied to the $[QQ][\bar{Q}\bar{Q}]$ tetraquarks
• Two- and three-gluon glueballs of $C=+$
• Baryon fields with $U_L(3)\times U_R(3)$ chiral symmetry V: Pion-Nucleon and Kaon-Nucleon $\Sigma$ Terms
• Study on $Z_{cs}$ and excited $B_s^0$ states in the chiral quark model
• Revisiting the pseudoscalar meson and glueball mixing and key issues in the search for pseudscalar glueball state
• Revisiting hidden-charm pentaquarks from QCD sum rules
• The Glueball content of ${\eta }_c$
• Explanation of the newly obseaved $Z_{cs}^{-}(3985)$ as a $D_s^{(\ast )-}{D}^{(\ast )0}$ molecular state
• On Two-Body Decays of A Scalar Glueball
• Triangle relations for XYZ states
• Studying the ${\bar{D}}_{1}K$ molecule in the Bethe-Salpeter equation approach
• Magnetic moment of the $X_1(2900)$ state in the diquark-antidiquark picture
• Excited doubly heavy baryon production via $W^{+}$ boson decays
• Is the exotic $0^{--}$ glueball a pure gluon state ?
• Spin-$\frac{3}{2}$ doubly charmed baryon contribution to the magnetic moments of the spin-$\frac{1}{2}$ doubly charmed baryons
• Observation of new excited $B_s^0$ states
• New hadron configuration: The double-gluon hybrid state
• Things that go bump in the night: From $J/\psi \varphi$ to other mass spectrum
• Hadronic production of the doubly charmed baryon via the proton-nucleus and the nucleus-nucleus collisions at the RHIC and LHC
• A possible interpretation for $X(6900)$ observed in four-muon final state by LHCb -- A light Higgs-like boson?
• Recoupling Mechanism for exotic mesons and baryons
• $D_{s0}(2590)$ as a dominant $c\bar{s}$ state with a small $D^{\ast }K$ component
• Prediction of possible exotic states in the $\eta \bar{K}{K}^{\ast }$ system
• ${\mathbf{\Omega }}_{\mathbf{b}}^{-}\to ({\mathbf{\Xi }}_{\mathbf{c}}^{+}{\mathbf{K}}^{-}){\mathbf{\pi }}^{-}$ and the ${\mathbf{\Omega }}_{\mathbf{c}}$ states
• Weak Decays of Doubly Heavy Baryons: ${\mathcal{B}}_{cc}\to \mathcal{B}{D}^{(\ast )}$
• Decay modes of the excited pseudoscalar glueball
• Comment on "Finding the $0^{--}$ Glueball" [arXiv:1408.3995]
• The electromagnetic multipole moments of the charged open-flavor $Z_{\bar{c}q}$ states
• Mapping a new cluster of charmoniumlike structures at $e^{+}{e}^{-}$ collisions
• The Odderon: Theoretical Status and Experimental Tests
• Semi-inclusive lepto-production of hidden-charm exotic hadrons
• $Z_{cs}$ states from the $D_s^{\ast }{\bar{D}}^{\ast }$ and $J/\psi K^{\ast }$ coupled channels: Signal in $B^{+}\to J/\psi \varphi K^{+}$ decay
• Looking for the exotic $X_0(2866)$ and its $J^P=1^{+}$ partner in the ${\bar{B}}^0\to D^{(\ast )+}{K}^{-}{K}^{(\ast )0}$ reactions
• Production of $Z_{cs}$ in $B$ and $B_s$ decay
• Newly discovered ${\Xi }_c^0$ resonances and their parameters
• $SU(3)$ Flavor Symmetry for Weak Hadronic Decays of ${\mathbf{B}}_{bc}$ Baryons
• The newly observed ${\Lambda }_b(6072{)}^0$ structure and its $\rho -$mode nonstrange partners
• New ${\Lambda }_b(6072{)}^0$ state as a $2S$ bottom baryon
• Description of the newly observed ${\Xi }_c^0$ states as molecular states
• Mass spectra of $N\Omega$ dibaryons in the ${}^3{S}_1$ and ${}^5{S}_2$ channels
• Exotic hadron naming convention
• Determination of the possible quantum numbers for the newly observed ${\Xi }_b(6227{)}^0$ state
• Mass spectra for the $cc\bar{b}\bar{b}$/$bb\bar{c}\bar{c}$ tetraquark states
• Study on the ${\Omega }_c^0$ States Decaying to ${\Xi }_c^{+}{K}^{-}$ in $pp$ collisions at $\sqrt{s}=7$, 13 TeV
• On Exotic Hybrid Pseudo-Potentials and Gauge/String Duality
• Double Exotic States Productions in Pion and Kaon Induced Reactions
• Mass of $1^{-+}$ four-quark--hybrid mixed states
• Hunting for a scalar glueball in exclusive B decays
• New $X_{0,1}(2900)$-like exotic states in $b$-baryon decays
• Decays of Roper-like singly heavy baryons in a chiral model
• Proximity of $f_0(1500)$ and $f_0(1710)$ to the scalar glueball
• Decay properties of the $Z_c(3900)$ through the Fierz rearrangement
• Chiral Structure of Vector and Axial-Vector Tetraquark Currents
• Bi-local baryon interpolating fields with two flavours
• Strange pentaquarks and excited $\Xi$ hyperons in ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ final states
• The "Closed" Chiral Symmetry and Its Application to Tetraquark
• Covalent hadronic molecules induced by shared light quarks
• Highly excited and exotic fully-strange tetraquark states
• Are the new excited ${\Omega }_c$ baryons negative parity states?
• Hybrid exotic meson with J^{PC}=1^{-+} in AdS/QCD
• Observation of $J/\psi$ Electromagnetic Dalitz Decays to $X(1835)$, $X(2120)$ and $X(2370)$
• Study of exotic hadrons with machine learning
• Existence and Non-Existence of Doubly Heavy Tetraquark Bound States
• Substructure of Multiquark Hadrons (Snowmass 2021 White Paper)
• Decay properties of the $X(3872)$ through the Fierz rearrangement
• $X$ structures in $B^{+}\to J/\psi \varphi K^{+}$ as one-loop and double-triangle threshold cusps
• The finite-width Laplace sum rules for $0^{++}$ scalar glueball in instanton liquid model
• Baryon Tri-local Interpolating Fields
• Identifying the ${\Lambda }_b(6146{)}^0$ and ${\Lambda }_b(6152{)}^0$ as $D$-wave bottom baryons
• High-energy elastic diffractive scattering of nucleons in the framework of the two-Reggeon eikonal approximation (from U-70 to LHC)
• Toward establishing the low-lying $P$-wave excited ${\Sigma }_c$ baryon states
• Universal non-resonant explanation to charmoniumlike structures $Z_c(3885)$ and $Z_c(4025)$
• Prediction of five-flavored pentaquarks
• Hybrid Mesons Masses in a Quark-Gluon Constituent Model
• Investigation of ${\Xi }_c^0$ in a chiral quark model
• AdS/QCD oddball masses and Odderon Regge trajectory from a twist-five operator approach
• Determination of the spectroscopic parameters of beauty-partners of $T_{cc}$ from QCD
• Search for the $X(2370)$ and observation of ${\eta }_c\to \eta \eta {\eta }^{\prime }$ in $J/\psi \to \gamma \eta \eta {\eta }^{\prime }$
• Effective-range expansion of the $T_{cc}^{+}$ state at the complex $D^{\ast +}{D}^0$ threshold
• Chiral Structure of Scalar and Pseudoscalar Mesons
• Bi-Local Baryon Interpolating Fields with Three Flavours
• The Possible Heavy Tetraquarks $qQ\bar{q}\bar{Q}$, $qq\bar{Q}\bar{Q}$ and $qQ\bar{Q}\bar{Q}$
• Production of charmed baryon ${\Lambda }_c(2860)$ via low energy antiproton-proton interaction
• Spin and polarization analysis of $Z_{cs}$ state
• Semileptonic Decay of ${\Omega }_c^0\to {\Xi }^{-}{l}^{+}{\nu }_l$ From Light-Cone Sum Rules
• Nonlocal gluon condensates in QCD sum rules
• On the " Froissaron-Maximal Odderon" Model
• Direct-channel option of the forward slope increase
• Is the $X17$ composed of four bare quarks?
• Light tetraquark states with the exotic quantum number $J^{PC}=3^{-+}$
• Reply to "Comment on `Finding the $0^{--}$ Glueball'" [arXiv:1702.06634] and comment on `Is the exotic $0^{--}$ glueball a pure gluon state?' [arXiv:1611.08698]
• Glueball-Meson Mixing In Holographic QCD
• Nature of $X(2370)$
• Scalar and Pseudoscalar Glueball Masses within a Gaussian Wavefunctional Approximation
• Spectrum of Hidden-Charm, Open-Strange Exotics in the Dynamical Diquark Model
• The determination of the spin and parity of a vector-vector system
• Gluelump spectrum from Coulomb gauge QCD
• Landscape of heavy baryons from the perspective of the chiral quark-soliton model