Measurements of the Branching Ratios for the Decays J/ψ→γπ0,γη, γη'→ 3γ at BES

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BES Collaboration. Measurements of the Branching Ratios for the Decays J/ψ→γπ0,γη, γη'→ 3γ at BES[J]. Chinese Physics C, 1997, 21(5): 385-392.
BES Collaboration. Measurements of the Branching Ratios for the Decays J/ψ→γπ0,γη, γη'→ 3γ at BES[J]. Chinese Physics C, 1997, 21(5): 385-392. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Measurements of the Branching Ratios for the Decays J/ψ→γπ0,γη, γη'→ 3γ at BES

  • Institute of High Energy Physics, The Chinese Academy of Scinces, Beijing 100039

Abstract: Decays of the J/ψ resonance into the final states with three photons are investigated.Branching ratios for the decays of J/ψ→γπ0 and J/ψ→γη'are determined to be Br (J/ψ→γπ0)=(4.6±1.1)×10-5 and. Br(J/ψ→γη')=(4.12±0.82)×10-3. The ratio of the two decay rates,(J/ψ→γη')/(J/ψ→γη),is 4.79±0.85. Within experimental errors, this value agrees well with the predictions of two theoretical models'.

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