On the Electric Dipole Transition of ψ (3770)

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Qin Danhua, Ding Yibing and Chao Kuangta. On the Electric Dipole Transition of ψ (3770)[J]. Chinese Physics C, 1990, 14(S2): 173-177.
Qin Danhua, Ding Yibing and Chao Kuangta. On the Electric Dipole Transition of ψ (3770)[J]. Chinese Physics C, 1990, 14(S2): 173-177. shu
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Received: 1989-11-23
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    Supported in part by the National Natural Science Foundation of China.

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On the Electric Dipole Transition of ψ (3770)

  • Physics Department, Beijing University, Department of Physics, Graduate School, Chinese Academy of Sciences, Center of Theoretical Physics, CCA ST(World Laboratory) and Physics Department, Beijing University
Fund Project:  Supported in part by the National Natural Science Foundation of China.

Abstract: Various E1 transition rates for cc states are calculated in a QCD-motivated potential model. Relativistic corrections are found to be substantial. A good agreement between theory and experiment is achieved for the rates of ψ(2S)→YXeJ and XeJ→γψ(1S) (J=0,1,2), but the calculated rates for ψ(3770)→YXeJ are smaller by a factor of 2 than their experimental values obtained by the Mark III Collaboration. The effect of the 23Sl-13D1 mixing may be important and needs to be considered.

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