Implications of a J^PC exotic

Abstract

Recent experimental data from BNL on the isovector J^PC =1^-+ exotic at 1.6 GeV in ρπindicate the existence of a non-quarkonium state consistent with lattice gauge theory predictions. We discuss how further experiments can strengthen this conclusion. We show that the ρπ, η'πand ηπcouplings of this state qualitatively support the hypothesis that it is a hybrid meson, although other interpretations cannot be eliminated.

10 pages, LaTeX, minor numerical corrections

References in corpus (2)

• Evidence for Exotic Meson Production in the Reaction ${\pi }^{-}p\to \eta {\pi }^{-}p$ at 18 GeV/c
• Exotic mesons in quenched lattice QCD

Cited by in corpus (12)

• Light Meson Spectroscopy
• Exotic meson spectroscopy from the clover action at beta = 5.85 and 6.15
• Hunting the Vector Hybrid
• Interpretation of Experimental J^PC Exotic Signals
• Photo-- and Electroproduction of $J^{PC}=1^{-+}$ exotics
• The Glueball Spectrum from a Potential Model
• Hybrid meson production by electromagnetic and weak interactions in a flux-tube simulation of lattice QCD
• Molecular States and 1^-+ Exotic Mesons
• The "forbidden" decays of hybrid mesons to $\pi \rho$ can be large
• Effective Lagrangian induced by the anomalous Wess-Zumino action and the exotic resonance state with $I^G(J^{PC})=1^{-}(1^{-+})$ in the $\rho \pi$, $\eta \pi$, ${\eta }^{\prime }\pi$, and $K^{\ast }\bar{K}+{\bar{K}}^{\ast }K$ channels
• Exotic ${\rho }^{\pm }{\rho }^0$ state photoproduction
• Gluonic Excitations' Millennial Finale