Exotic c c-bar Mesons

Abstract

A surprising number of new c c-bar mesons with masses above the D D-bar threshold have been discovered at the B factories. Some of them are ordinary charmonium states, but others are definitely exotic mesons. The current theoretical status of the new c c-bar mesons is summarized.

11 pages, 1 figure, talk presented at Continuous Advances in QCD 2008, Minneapolis, May 2008

References in corpus (38)

• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Higher Charmonia
• Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)
• Observation of a Broad Structure in the ${\pi }^{+}{\pi }^{-}J/\psi$ Mass Spectrum around 4.26 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 of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Observation and Properties of the X(3872) Decaying to J/psi pi+ pi- in p-p(bar) Collisions at sqrt(s) = 1.96 TeV
• Study of the B- --> J/psi K- pi+ pi- Decay and Measurement of the B- --> X(3872) K- Branching Fraction
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Measurement of e^+e^- to pi^+pi^-J/psi Cross Section via Initial State Radiation at Belle
• The Exotic XYZ Charmonium-like Mesons
• Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/$c^2$ in the Reaction $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\psi (2S)$ Measured at BaBar
• Quarkonia and their transitions
• Hadro-Charmonium
• Four Quark Interpretation of Y(4260)
• Analysis of the Quantum Numbers $J^{PC}$ of the X(3872) Particle
• Masses of heavy tetraquarks in the relativistic quark model
• Ab Initio Study of Hybrid b-bar-gb Mesons
• Suppressed decay into open charm for the Y(4260) being an hybrid
• Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
• New states above charm threshold
• Study of Resonances in Exclusive B Decays to Dbar(*)D(*)K
• Line Shapes of the X(3872)
• Are there compact heavy four-quark bound states?
• Indications of a Four-Quark Structure for the X(3872) and X(3876) Particles from Recent Belle and BABAR Data
• QCD sum rules study of the meson Z^+(4430)
• Production of the X(3872) in B Meson Decay by the Coalescence of Charm Mesons
• The Effects of Charged Charm Mesons on the Line Shapes of the X(3872)
• Do $c\bar{c}n\bar{n}$ bound states exist?
• Isospin properties of the X state near the D {\bar D}^{*} threshold
• Do the QCD sum rules support four-quark states?
• Experimental constraints on the possible J^PC quantum numbers of the X(3872)
• Gluonic excitation of non-exotic hybrid charmonium from lattice QCD
• Excited charmonium spectrum from anisotropic lattices
• Four- and Five-Body Scattering Calculations
• Possibility of Narrow High-Mass Exotic States
• Four Quark cn - nbar cbar States in U(12)-Scheme and X(3872)/Y(3940)

Cited by in corpus (3)

• New Charmonium States in QCD Sum Rules: a Concise Review
• Interplay of quark and meson degrees of freedom in a near-threshold resonance
• Exotic open and hidden charm states