In our previous study, we calculated the transition from factors of J/ψ→D(s)(∗) using the QCD sum rules. Based on the factorization approximation, the obtained form factors can be applied to evaluate the weak non-leptonic decay rates of J/ψ→D(s)(∗)+M, where M stands for a light pseudoscalar or vector meson. We predict that the branching ratio for inclusive non-leptonic two-body weak decays of J/ψ which are realized via the spectator mechanism, can be as large as 1.3×10−8, in particular, the branching ratio of J/ψ→Ds∗±+ρ∓ can reach 5.3×10−9. Such values will be marginally accessed by the ability of BESIII which will begin running very soon.
@article{arxiv.0802.2762,
title = {Weak decays of $J/\psi$: the non-leptonic case},
author = {Yu-Ming Wang and Hao Zou and Zheng-Tao Wei and Xue-Qian Li and Cai-Dian Lu},
journal= {arXiv preprint arXiv:0802.2762},
year = {2008}
}