Exotic Hadron Spectroscopy

Exotic/charmonium Hadron Spectroscopy at Belle and Babar

A brief review of experimental results on charmonium and charmonium-like hadron spectroscopy at B-factories is presented. A special focus is put on recent results of η c and η c (2S) study, X(3872) radiative decays, ωJ/ψ final state study and search for charmonium production in radiative Υ decays.

Hadron Spectroscopy

Production of exotic hadrons at hadron colliders

The observation of many unexpected states decaying into heavy quarkonia has challenged the usual QQ̄ interpretation. One of the most studied exotic states, the X(3872), happens to be copiously produced in high-energy hadron collisions. We discuss how this large prompt production cross-section disfavors a loosely-bound molecule interpretation for this particle. This is supported by Monte Carlo si...

Evidence for Exotic Hadron Contributions to [ subscript

1 Light Hadron Spectroscopy ∗

Recent developments in calculations of the light hadron spectrum are reviewed. Particular emphasis is placed on discussion of to what extent the quenched spectrum agrees with experiment. Recent progress, both for quenched and full QCD, in reducing scaling violation with the use of improved actions is presented.