PING Rong-Gang1, JIANG Huan-Qing1,2,3,4, SHEN Peng-Nian1,2,3, ZOU Bing-Song1,2,3,4
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
Abstract： We generalize the quark-pair creation model to a study of the radiative decays J/ψ →γBB by assuming that the u, d, or s quark pairs are created with the same interaction strength. From the calculation of the ratio of the decay widths Γ(J/ψ →γpp)/Γ(J/ψ →γpp), we extract the quark-pair creation strength gI = 15.40 GeV. Based on the SU(6) spin-flavor basis and the “uds”basis, the radiative decay branching ratios containing strange baryons are evaluated. Measurements for these decay widths from the BESII data are suggested.
2002, Vol. 19 
