Possible explanation of ϱ0ϱ0 production in J ψ radiative decay

Bing An Li, Keh Fei Liu

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8 Scopus citations


The ρ{variant}0ρ{variant}0 production in the recent Mark II experiment of J/ψ radiative decay is interpreted as due to two isoscalar 2++ four-quark (q2q2) states which together with the isotensor 2++ four-quark state are responsible for the major part of the ρ{variant}0ρ{variant}0 enhancement observed in γγ→ρ{variant}0ρ{variant}0. It is believed to be different from the θ (1640) meson, a glueball candidate, which decays to ηη and kk. In order to distinguish between them, we propose to measure the angular correlation between γ and ρ{variant}0 in e+e-→J/ψ→γρ{variant}0ρ{variant}0 and the branching ratio of the decay mode J/ψ→γωω. The 2++ φφ resonance (at 2.16 GeV) observed in hadronic reactions is predicted to be produced in J/ψ radiative decay also with BR(J/ψ→γφφ)/BR(J/ψ→ γρ{variant}0ρ{variant}0)∼0.18.

Original languageEnglish
Pages (from-to)128-132
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - Jan 5 1984

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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