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A Model Independent Analysis of Hadronic Decays of J/ψJ/\psi and ηc\eta_c (2980)

Jul, 1985
31 pages
Published in:
  • Phys.Rev.D 32 (1985) 2961
DOI:
Report number:
  • SCIPP 85/39
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Abstract: (APS)
Implications of broken flavor-SU(3) symmetry are studied for J/ψ and ηc decays to two- and three-meson final states. Nonet-symmetry breaking and pseudoscalar-meson mixing are discussed using recent measurements of J/ψ→vector+pseudoscalar branching ratios by the Mark III collaboration. Detailed fits are presented to determine phenomenological parameters which describe the various mesonic decays of the J/ψ. We conclude that the η and η’ can be mixed with ι(1440), and predict B(J/ψ→ιω)=(0.75±0.12)×10 -3 and B(J/ψ→ιφ)=(0.09±0.02)×10 -3. In J/ψ →pseudoscalar+pseudoscalar decays, electromagnetic and mass-breaking effects are found to be of similar importance. Different SU(3)-breaking patterns are observed in J/ψ→PV and ηc→VV decays.
  • J/PSI(3100): HADRONIC DECAY
  • HADRONIC DECAY: J/PSI(3100)
  • ETA/C(2980): HADRONIC DECAY
  • HADRONIC DECAY: ETA/C(2980)
  • SYMMETRY BREAKING: SU(3)
  • PSEUDOSCALAR MESON: INTERFERENCE
  • SELECTION RULE: IIZUKA-OKUBO-ZWEIG
  • BRANCHING RATIO
  • NUMERICAL CALCULATIONS: INTERPRETATION OF EXPERIMENTS
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