Pseudoscalar production at omega omega threshold in J/psi -> gamma omega omega

Abstract

The decay channel J/ψ->gamma omega omega, omega -> pi+ pi- pi0 is analyzed using a sample of 5.8x10^7 J/psi events collected with the BESII detector. The omega omega invariant mass distribution peaks at 1.76 GeV/c^2, just above the omega omega threshold. Analysis of angular correlations indicate that the omega omega system below 2 GeV/c^2 is predominantly pseudoscalar. A partial wave analysis confirms the predominant pseudoscalar structure, together with small 0^{++} and 2^{++} contributions, and yields a pseudoscalar mass M = 1744 \pm 10 (stat) \pm 15 (syst) MeV/c^2, a width Gamma = 244^{+24}_{-21} (stat) \pm 25 (syst) MeV/c^2, and a product branching fraction Br(J/psi-> gamma eta(1760)) \cdot Br(η(1760)->omega omega) = (1.98 \pm 0.08 (stat) \pm 0.32 (syst)) x 10^{-3}.

18 pages, 5 figures, submit to PRD

References in corpus (13)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The glueball spectrum from an anisotropic lattice study
• Resonances in $J/\psi \to \varphi {\pi }^{+}{\pi }^{-}$ and $\varphi K^{+}{K}^{-}$
• Determining the Gluonic Content of Isoscalar Mesons
• The $\sigma$ pole in $J/\psi \to \omega {\pi }^{+}{\pi }^{-}$
• Observation of a near-threshold enhancement in the ωϕmass spectrum from the doubly OZI suppressed decay J/ψ\to γωϕ
• BESII Detector Simulation
• Partial Wave Analysis of ${\chi }_{c0}\to {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$
• Radiative Decay of Vector Quarkonium: Constraints on Glueballs and Light Gluinos
• A Study of J/psi-->gamma gamma V(rho,phi) Decays with the BESII Detector
• New Members in the $0^{+}$ ($0^{++})$ Family
• Gluonic Mesons in J/Psi Radiative Decay
• New meson mass relation and lowest pseudoscalar glueball mass

Cited by in corpus (25)

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• Revisiting Scalar Glueballs
• $X(1835)$ and $\eta (1760)$ observed by the BES Collaboration
• $X(1835)$ and the New Resonances $X(2120)$ and $X(2370)$ Observed by the BES Collaboration
• The $\eta (2225)$ observed by the BES Collaboration
• Towards the assignment for the $4^1{S}_0$ meson nonet
• Dispersive analysis of glueball masses
• Hadronic and radiative three-body decays of J/psi involving the scalars f0(1370), f0(1500) and f0(1710)
• Strong decays of the $X(2500)$ newly observed by the BESIII Collaboration
• First study of η_c, η(1760) and X(1835) production via η'π^+π^- final states in two-photon collisions
• Experimental Review of Structures in the $J/\psi \varphi$ Mass Spectrum
• Partial wave analysis of J/ψ\to γϕϕ
• Search for the tensor glueball
• A possible mechanism for producing the threshold enhancement in $J/\psi \to \gamma p\bar{p}$
• Dispersive analysis of excited glueball states
• Study of two-photon decays of pseudoscalar mesons via $J/\psi$ radiative decays
• Search for the decays $J/\psi \to \gamma \rho \varphi$ and $J/\psi \to \gamma \rho \omega$
• Cross sections of e+e- --> gamma VV and e+e- --> gamma gamma V
• Study of X(1812) as a $(K^{\ast }{\bar{K}}^{\ast })$ Molecular State
• An alternative interpretation of Belle data on γ-γ-> η'-π^+-π^-
• Study of light-meson resonances decaying to $K_{\mathrm{S}}^{0}K\pi$ in the $B\to (K_{\mathrm{S}}^{0}K\pi )K$ channels