Heavy Quarkonium

Abstract

I review heavy quarkonium physics in view of recent experimental results. In particular, I discuss new results on spin singlet states, photon and hadronic transitions, D-states and discovery of yet unexplained narrow X(3872) state.

15 pages, 16 figures. 2nd version: minor changes in references and text. Invited talk presented at the 21st International Symposium On Lepton And Photon Interactions At High Energies (LP03) 11-16 August 2003, Batavia, Illinois

References in corpus (6)

• The ${\eta }_c(3654)$ and hyperfine splitting in charmonium
• Measurements of the Mass and Full-Width of the ${\eta }_c$ Meson
• The enhancement of the decay Upsilon(1D) -> eta Upsilon(1S) by the axial anomaly in QCD
• Interference Study of the chi_c0 (1^3P_0) in the Reaction Proton-Antiproton -> pi^0 pi^0
• Remarks on the decays chi_{bJ}^\prime -> omega Upsilon
• Prospects for detection of ${\rm Y}(1D)\to {\rm Y}(1S)\pi \pi$ via ${\rm Y}(3S)\to {\rm Y}(1D)+X$

Cited by in corpus (28)

• Herwig++ Physics and Manual
• Higher Charmonia
• Effective field theories for heavy quarkonium
• Determination of the X(3872) meson quantum numbers
• Spectroscopy of B_c Mesons in the Relativized Quark Model
• Measurement of the Dipion Mass Spectrum in X(3872) -> J/Psi Pi+ Pi- Decays
• Interpretation of the X(3872) as a charmonium state plus an extra component due to the coupling to the meson-meson continuum
• Higher mass bottomonia
• Excited Charmed Mesons: Observations, Analyses and Puzzles
• First Observation of a Upsilon(1D) State
• Observation of the ^1P_1 State of Charmonium
• Search for excited charmonium states in $e^{+}{e}^{-}$ Annihilation at $\sqrt{s}=10.6$ GeV
• Observation of psi(3770) --> gamma chi_c0
• Photon Transitions in ψ(2S) Decays to χ_{cJ}(1P) and η_c(1S)
• Psi'' decays to charmless final states
• Perturbative heavy quarkonium spectrum at next-to-next-to-next-to-leading order
• The Lost Tribes of Charmonium
• An estimate of the flavour singlet contributions to the hyperfine splitting in charmonium
• The X(3872) and the 3941 MeV peak in omega+J/Psi
• Possible large branching fraction of psi(3770) decays to charmless final states
• Quark--antiquark states and their radiative transitions in terms of the spectral integral equation. {\Huge II.} Charmonia
• The static force in background perturbation theory
• Measurement of the branching fraction for $\psi (3770)\to \gamma {\chi }_{c0}$
• Theoretical Overview: The New Mesons
• Model Independent Results for Heavy Quarkonium
• Quarkonium Production and Decay
• Potential models, sum rules, color singlet model versus NREFT in Heavy Quarkonium
• Charmonium Review