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Decay rate of the process Ψ'→Ψ(1P1)+2γ is calculated with all possible intermediate states included in the context of potential model. Out calculation shows that the branching ratio for this channel is about 10-5.For a total production of 2×10Ψ' particles, it is possible to find out Ψ' (1P1) at BEPC through searching for 3γ signals. 相似文献
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