Chin. Phys. Lett.  2006, Vol. 23 Issue (9): 2376-2378    DOI:
Original Articles |
Radiative Decays of Charmonium into Light Mesons
GAO Ying-Jia;ZHANG Yu-Jie;CHAO Kuang-Ta
Department of Physics, Peking University, Beijing 100871
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GAO Ying-Jia, ZHANG Yu-Jie, CHAO Kuang-Ta 2006 Chin. Phys. Lett. 23 2376-2378
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Abstract We apply perturbative QCD to the radiative decays of charmonia J/ψ and XcJ into light mesons. We perform a complete numerical calculation for the quark--gluon loop diagrams involved in these processes. The calculated J/ψ decay branching ratios into p-wave mesons f2(1270) and f1(1285) fit the data well, while that of f0(980) (if treated as an ss meson) is predicted to be 1.6×10-4, which implies that f0(1710) can not be the ss or (uu+dd)√2 meson. Decays of p-wave charmonia XcJ → ρ (ω,Ф) γ (J=0,1,2) are also studied, and the branching ratio of Xcl → ρ γ is predicted to be 1.4×10-5, which may be tested by CLEO-c ollaboration and BESIII collaboration with future experiments.
Keywords: 12.38.Bx      13.25.Hw      14.40.Gx     
Published: 01 September 2006
PACS:  12.38.Bx (Perturbative calculations)  
  13.25.Hw (Decays of bottom mesons)  
  14.40.Gx  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I9/02376
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CHAO Kuang-Ta
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