S-D Mixing and Electric Dipole Transition of ψ(3770)

QIN Dan-Hua; DING Yi-Bing; ZHAO Guang-Da

Chinese Physics C> 1991, Vol. 15> Issue(3) : 284-288

S-D Mixing and Electric Dipole Transition of ψ(3770)

Department of Physics,Peking University 1008712 Theoretical Physics Institute,Academia Sinica,Beijing 1000803 Department of Physics,Graduate School,Academia Sinica,Beijing 1000394 CCAST World Laboratory

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Abstract：
In the framework of the potential model for charmonium,the effects of 2³S₁-1³D₁ mixing between ψ(3770) and ψ(3686) are discussed.It is concluded that the possibility for the mixing angle θ=30° should be ruled out.While the results for both ψ(3770)→γχ₀ and ψ(3686)→γχ₀ are improved with θ=－10°,the contradiction between the theoretical value and the experimental value for ψ(3770)→γχ₁ still remains.

References

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秦旦华,丁亦兵,赵光达,高能物理与核物理,14(1990),380.[2] R. H. Schindler, SLAC-PUB-4694 (1988).[3] G. P. Yost et al., Particle Data Group, Phys, lett., 224B(1988), 1.[4] E. Eichten et al., Phys. Rev., D17(1978), 3090; D21(1980), 203.[5] K. Heikkila et al., Phys. Rev., D29(1984), 110.[6] Y. P. Kuang and T. M. Yan, Phys. Rev., D41(1990), 155.[7] Y. B. Ding, J. He, S. C. Cai, D. H. Qin and K. T. Chao, in Proc. of the lnt. Sym. On Particle and Nuclear Phys.Beijing, Sept 2-7, 1985. (World Scientific, Singapore) P. 88.

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QIN Dan-Hua, DING Yi-Bing and ZHAO Guang-Da. S-D Mixing and Electric Dipole Transition of ψ(3770)[J]. Chinese Physics C, 1991, 15(3): 284-288.

QIN Dan-Hua, DING Yi-Bing and ZHAO Guang-Da. S-D Mixing and Electric Dipole Transition of ψ(3770)[J]. Chinese Physics C, 1991, 15(3): 284-288. shu

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Received: 1900-01-01
Revised: 1900-01-01

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