Chinese Physics C > 1990, Vol. 14 > Issue(4): 380-384

ON THE ELECTRIC DIPOLE TRANSITIONS OF ψ(3770)

Department of Physics,Peking University2 Department of Physics,Graduate School,Academia Sinica

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Various E1 transition rates for cc states are calculated in a QCD-motivated potential model.Relativistic corrections are found to be substantial.While a good agreement between theory and experiment is achieved for the rates of ψ(2s)→γχ _cJand χ _cJ→γψ(1S)(J=0,1,2),the calculated rates for ψ(3770)→γχ _cJare smaller by a factor of～2 than their experimental values obtained by the MarkⅢ collaboration.The effect of the 2 ³S ₁—1 ³D1mixing is possibly important and needed to be considered.

References

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[2]	M. Ablikim,et al. Measurement of e⁺e^-→DD cross sections at the ψ(3770) resonance. Chinese Physics C, 2018, 42(8): 083001.doi:10.1088/1674-1137/42/8/083001
[3]	HE Kang-Lin,MO Xiao-Hu,WANG Ping,YUAN Chang-Zheng. Experimental Searches for the Non-DD Decays of ψ(3770) in e⁺e^－Collider. Chinese Physics C, 2007, 31(2): 125-137.
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[12]	DI Yao-Min. M1 Transitions in the Vibrational Limit Case of IBM-Ⅱ. Chinese Physics C, 1991, 15(12): 1101-1108.
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[14]	Ding Yibing,Zhou Lei,Zhao Guangda,Qin Danhua. Sum Rules in Quantum Mechanics and the Electric Dipole Transitions of the ψ (3770). Chinese Physics C, 1991, 15(S4): 373-383.
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[17]	XING Zheng,WU Xing-Ju. ROTATIONAL EFFECT ON ELECTROMAGNETIC TRANSITIONS AFTER BAND-CROSSING. Chinese Physics C, 1990, 14(12): 1130-1135.
[18]	Qin Danhua,Ding Yibing,Chao Kuangta. On the Electric Dipole Transition of ψ (3770). Chinese Physics C, 1990, 14(S2): 173-177.
[19]	XING Zheng,CHEN Xing-Qu. ROTATIONAL EFFECT ON ELECTROMAGNETIC TRANSITIONS IN NUCLEI. Chinese Physics C, 1989, 13(6): 569-573.
[20]	LIU Xian-Hui,LI Yang-Guo. QUADRUPOLE TRANSITION WITH π-NUCLEUS DOUBLE CHARGE EXCHANGE. Chinese Physics C, 1983, 7(2): 197-202.

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QIN Dan-Hua, DING Yi-Bing and ZHAO Guang-Da. ON THE ELECTRIC DIPOLE TRANSITIONS OF ψ(3770)[J]. Chinese Physics C, 1990, 14(4): 380-384.

QIN Dan-Hua, DING Yi-Bing and ZHAO Guang-Da. ON THE ELECTRIC DIPOLE TRANSITIONS OF ψ(3770)[J]. Chinese Physics C, 1990, 14(4): 380-384. shu

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

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

ON THE ELECTRIC DIPOLE TRANSITIONS OF ψ(3770)

Corresponding author:QIN Dan-Hua,

Department of Physics,Peking University2 Department of Physics,Graduate School,Academia Sinica

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1990-04-05

Abstract:Various E1 transition rates for cc states are calculated in a QCD-motivated potential model.Relativistic corrections are found to be substantial.While a good agreement between theory and experiment is achieved for the rates of ψ(2s)→γχ_cJand χ_cJ→γψ(1S)(J=0,1,2),the calculated rates for ψ(3770)→γχ_cJare smaller by a factor of～2 than their experimental values obtained by the MarkⅢ collaboration.The effect of the 2³S₁—1³D1mixing is possibly important and needed to be considered.