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The transition form factors for semi-leptonic weak decays of J/ψ in QCD sum rules
Authors:Yu-Ming Wang  Hao Zou  Zheng-Tao Wei  Xue-Qian Li  Cai-Dian Lü
Affiliation:(1) Institute of High Energy Physics, P.O. Box 918(4), Beijing, 100049, P.R. China;(2) Department of Physics, Nankai University, Tianjin, 300071, P.R. China
Abstract:
Within the standard model, we investigate the semi-leptonic weak decays of J/ψ. The various form factors of J/ψ making the transition to a single charmed meson (D(*) (d,s)) are studied in the framework of QCD sum rules. These form factors fully determine the rates of the weak semi-leptonic decays of J/ψ and provide valuable information on non-perturbative QCD effects. Our results indicate that the decay rate of the semi-leptonic weak decay mode J/ψ→D(*)- s+e+e is at the order of 10-10. PACS 13.20.Gd; 13.25.Gv; 11.55.Hx
Keywords:
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