Hadron Spectroscopy: Theory and Experiment

Abstract

Many new results on hadron spectra have been appearing in the past few years thanks to improved experimental techniques and searches in new channels. New theoretical techniques including refined methods of lattice QCD have kept pace with these developments. Much has been learned about states made of both light (u, d, and s) and heavy (c, b) quarks. The present review treats light-quark mesons, glueballs, hybrids, particles with a single c or b quark, charmonium, and bottomonium states. Some prospects for further study are noted.

29 pages, 9 figures, to be published in Journal of Physics G. Further updating of references

References in corpus (116)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Instantons in QCD
• Diquarks and Exotic Spectroscopy
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 GeV/$c^2$
• Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2
• Observation of the Narrow State $X(3872)\to J/\psi {\pi }^{+}{\pi }^{-}$ in $\bar{p}p$ Collisions at $\sqrt{s}=1.96 \TeV$
• Observation and Properties of the X(3872) Decaying to J/psi pi+ pi- in p-p(bar) Collisions at sqrt(s) = 1.96 TeV
• Mass and width of the lowest resonance in QCD
• Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 Decaying to D_s^*+ pi^0 and Confirmation of the D_sJ^* (2317) State
• Study of the B- --> J/psi K- pi+ pi- Decay and Measurement of the B- --> X(3872) K- Branching Fraction
• Properties of heavy quarkonia and B_c mesons in the relativistic quark model
• Short Range Structure in the X(3872)
• Chiral Multiplets of Heavy-Light Mesons
• High-Precision Lattice QCD Confronts Experiment
• Observation of a near-threshold omega-J/psi mass enhancement in exclusive B-->K omega J/psi decays
• The D*0 D0bar threshold resonance
• Observed D_s(2317) and tentative D(2100-2300) as the charmed cousins of the light scalar nonet
• Observation of Bs-Bsbar Oscillations
• Experimental evidence for a light and broad scalar resonance in $D^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$ decay
• A low-lying scalar meson nonet in a unitarized meson model
• The inverse amplitude method in Chiral Perturbation Theory
• Charmonium levels near threshold and the narrow state $X(3872) \to π^{+}π^{-}\jpsi$
• Study of B- => D**0 pi-(D**0 => D(*)+ pi-) decays
• Observation of New States Decaying into ${\Lambda }_c^{+}{K}^{-}{\pi }^{+}$ and ${\Lambda }_c^{+}{K}_S^0{\pi }^{-}$
• Charmonium Decays of $Y(4260), psi(4160), and psi(4040)
• Dalitz Plot Analysis of the Decay D^+ --> K^- pi^+ pi^+ and Indication of a Low-Mass Scalar K pi Resonance
• Gluonic charmonium resonances at BaBar and Belle?
• Four Quark Interpretation of Y(4260)
• Spectroscopy of B_c Mesons in the Relativized Quark Model
• Direct Limits on the Bs Oscillation Frequency
• The Possible Interpretations of Y(4260)
• Diagnostic Decays of the X(3872)
• Decay width of light quark hybrid meson from the lattice
• Observation of a Near-threshold $D^0{\bar{D}}^0{\pi }^0$ Enhancement in $B\to D^0{\bar{D}}^0{\pi }^{0}K$ Decay
• The B Meson Decay Constant from Unquenched Lattice QCD
• Suppressed decay into open charm for the Y(4260) being an hybrid
• A global fit of $\pi \pi$ and $\pi K$ elastic scattering in ChPT with dispersion relations
• New states above charm threshold
• Chiral Dynamics and Heavy Quark Symmetry in a Toy Field Theoretic Model
• The K^*_0(800) scalar resonance from Roy-Steiner representations of pi K scattering
• Charmed meson decay constants in three-flavor lattice QCD
• Observation of a New D_s Meson Decaying to D K at a Mass of 2.86 GeV/c^2
• Measurements of the $D_{sJ}$ resonance properties
• Observation of a Charmed Baryon Decaying to D0 p at a Mass Near 2.94 GeV/c2
• Improved Measurement of cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_{D^+}
• Chiral effective action with heavy quark symmetry
• Observation of an Isotriplet of Excited Charmed Baryons Decaying to ${\Lambda }_c^{+}\pi$
• Production of $f_0(1710)$, $f_0(1500)$, and $f_0(1370)$ in $J/\psi$ hadronic decays
• Measurement of Masses and Widths of Excited Charm Mesons $D_2^{\ast }$ and Evidence for Broad States
• Heavy Baryon Masses in the $1/m_Q$ and $1/N_c$ Expansions
• Observation of New States Decaying into ${\Lambda }_c^{+}{\pi }^{-}{\pi }^{+}$
• Observation of an Excited Charm Baryon OmegaC* Decaying to OmegaC0 Gamma
• The nature of $\sigma$, $\kappa$, $a_0(980)$ and $f_0(980)$
• Evidence for kappa Meson Production in J/psi -> bar{K}^*(892)^0K^+pi^- Process
• Observation of h_c(^1P_1) State of Charmonium
• Parity doublets and chiral symmetry restoration in baryon spectrum
• Measurements of the cross sections for $e^{+}{e}^{-}\to \mathrm{hadrons}$ at 3.650, 3.6648, 3.773 GeV and the branching fraction for $\psi (3770)\to \mathrm{non}-D\bar{D}$
• Mass of the B_c Meson in Three-Flavor Lattice QCD
• Measurements of the braching fractions for psi(3770)--> D0D0-bar,D+D-,DD-bar$ and the resonance parameters of psi(3770) and psi(2S)
• Measurement of $b$ hadron masses in exclusive $J/\psi$ decays with the CDF detector
• The $\sigma$ pole in $J/\psi \to \omega {\pi }^{+}{\pi }^{-}$
• Measurement of Absolute Hadronic Branching Fractions of D Mesons and e^+e^- --> D barD Cross Sections at E_cm = 3773 MeV
• Charmonium's K2 peak
• Model Independent Measurement of \swave $K^{-}{\pi }^{+}$ systems using $\Dp\to Kππ$ Decays from Fermilab E791
• Hybrid meson decay from the lattice
• Chiral Suppression of Scalar Glueball Decay
• Measurement of the Cabibbo-Kobayashi-Maskawa angle gamma in B-+ -> D(*)K-+ decays with a Dalitz analysis of D -> K0s pi- pi+
• Final State Interactions in Hadronic D decays
• 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
• Dalitz plot analysis of the decay B+- -> K+-K+-K-+
• Observation of psi(3770)--> pi pi J/psi and Measurement of Gamma_{ee}[psi(2S)]
• Production of singlet P-wave $c\bar{c}$ and $b\bar{b}$ states
• Re-examination of orbital ordering in LaMnO${}_3$: Electron-electron and electron-lattice interactions
• Evidence of psi(3770) non-DD-bar Decay to J/psi pi+pi-
• Observation of the ^1P_1 State of Charmonium
• Does one observe chiral symmetry restoration in baryon spectrum?
• Decay of the psi(3770) to Light Hadrons
• Measurement of sigma(e^+e^- --> psi(3770) --> hadrons) at E_{cm}=3773 MeV
• Predicting the Masses of Heavy Hadrons without an Explicit Hamiltonian
• Photon transitions in Upsilon(2S) and Upsilon(3S)
• $1^{-+}$ exotic meson at light quark masses
• Observation of psi(3770) --> gamma chi_c0
• Parity Doubling Among the Baryons
• The kappa in E791 data for D->K-pi-pi
• Continuum bound states K-long, D_{1}(2420), D_{s1}(2536) and their partners K-short, D_{1}(2400), D*_{sJ}(2463)
• Psi'' decays to charmless final states
• Observation of ${\rm Y}(4S)decaysto$π^+pi^-Υ(1S)$and$π^+pi^-Υ(2S)
• Production of the ${\eta }_b(nS)$ states
• A search for J^{PC}=1^{-+} exotic mesons in the pi- pi- pi+ and pi- pi0 pi0 systems
• A partial wave analysis of the ${\pi }^{-}{\pi }^{-}{\pi }^{+}$ and ${\pi }^{-}{\pi }^0{\pi }^0$ systems and the search for a $J^{PC}=1^{-+}$ meson
• Charmed Baryons with $J=3/2$
• First Observation of psi(3770) --> gamma chi_{c1} --> gamma gamma J/psi
• Parity Doubling and SU(2)_L x SU(2)_R Restoration in the Hadron Spectrum
• Hybrid meson properties in Lattice QCD and Flux Tube Models
• Sea Quark Effects on Quarkonia
• Study of B --> D^(*)D_s(J)^(*) Decays and Measurement of D_s^- and D_sJ(2 460)^- Branching Fractions
• Measurement of the Direct Photon Momentum Spectrum in Upsilon(1S), Upsilon(2S), and Upsilon(3S) Decays
• Measurement of Interfering K^*+K^- and K^*-K^+ Amplitudes in the Decay D^0 --> K^+K^-pi^0
• Diquarks as Inspiration and as Objects
• Masses of light mesons in the relativistic quark model
• Mass splittings in ${\Sigma }_b$ and ${\Sigma }_b^{\ast }$
• Angular distributions in $J/\psi (\rho ,\omega )$ states near threshold
• Chiral and U(1)_A restorations high in the hadron spectrum, semiclassical approximation and large N_c
• Diquarks and antiquarks in exotics: a menage a trois and a menage a quatre
• Observation of the Hadronic Transitions Chi_{b 1,2}(2P) -> omega Upsilon(1S)
• Measurement of the Muonic Branching Fractions of the Narrow Upsilon Resonances
• Hadron Spectroscopy (theory): Diquarks, Tetraquarks, Pentaquarks and no quarks
• Study of nucleon resonances with electromagnetic interactions
• On Goldstone bosons decoupling from high-lying hadrons
• Experimental Study of chi_b(2P) --> pi pi chi_b(1P)
• A possible gateway to eta_b: chi_{b0}(2P) -> eta eta_b

Cited by in corpus (30)

• An updated review of the new hadron states
• The Physics of the B Factories
• A review of the open charm and open bottom systems
• Baryon spectroscopy
• The quark-gluon vertex in Landau gauge QCD: Its role in dynamical chiral symmetry breaking and quark confinement
• Charmed baryon strong decays in a chiral quark model
• Dalitz plot analysis of $B_s^0\to {\bar{D}}^0{K}^{-}{\pi }^{+}$ decays
• Strong decays of heavy-light mesons in a chiral quark model
• A Study of Excited Charm-Strange Baryons with Evidence for new Baryons Ξ_c(3055)^+ and Ξ_c(3123)^+
• Analysis of the $1/2^{-}$ and $3/2^{-}$ heavy and doubly heavy baryon states with QCD sum rules
• Observation of overlapping spin-1 and spin-3 ${\bar{D}}^0{K}^{-}$ resonances at mass $2.86\mathrm{GeV}/c^2$
• Raditive decay of single charmed baryons
• Heavy hadron spectroscopy and the bag model
• Heavy-strange meson molecules and possible candidates $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, and $X_0(2900)$
• Charmed-strange Meson Spectrum: Old and New Problems
• Measurement of the masses and widths of the bottom baryons Sigma_b+- and Sigma_b*+-
• Single Heavy Flavour Baryons using Coulomb plus Power law interquark Potential
• A cornucopia of antineutrons and hyperons from super J/psi factory for next-generation nuclear and particle physics high-precision experiments
• Analysis of the ${\Lambda }_Q$ baryons in the nuclear matter with the QCD sum rules
• The mass spectrum and strong decay properties of the charmed-strange mesons within Godfrey-Isgur model considering the coupled-channel effects
• Implications to $c\bar{s}$ assignments of $D_{s1}(2700{)}^{\pm }$ and $D_{sJ}(2860)$
• The Decays of $B^{+}\to {\bar{D}}^0+D_{sJ}^{+}(2S)$ and $B^{+}\to {\bar{D}}^0+D_{sJ}^{+}(1D)$
• Analysis of the strong coupling form factors of ${\Sigma }_{b}NB$ and ${\Sigma }_{c}ND$ in QCD sum rules
• Comparative study of the scalar- and tensor-meson production in the reaction $\gamma {\gamma }^{\ast }(Q^2)\to \eta {\pi }^0$
• The MC-QTAIM: A framework for extending the atoms in molecules analysis beyond purely electronic systems
• Analysis of the vertexes ${\Omega }_Q^{\ast }{\Omega }_Q^{\ast }\varphi$, ${\Omega }_Q^{\ast }{\Xi }_Q^{\ast }{K}^{\ast }$, ${\Xi }_Q^{\ast }{\Sigma }_Q^{\ast }{K}^{\ast }$ and ${\Sigma }_Q^{\ast }{\Sigma }_Q^{\ast }\rho$ with the light-cone QCD sum rules
• Dynamical mixing between $2^3{S}_1$ and $1^3{D}_1$ charmed mesons
• Analysis of the strong vertexes of ${\Sigma }_c^{\ast }ND$ and ${\Sigma }_b^{\ast }NB$ in QCD sum rules
• A Primary Study of Heavy Baryons Lambda_Q, Xi_Q, Sigma_Q and Omega_Q
• The lightest flavor--singlet qqq baryons as witnesses to color