; Li, Gang
; Zhao, Qiang] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
; [Zhao, Qiang] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England
; [Zhao, Qiang] CAS, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
We investigate the psi(3770) non-D (D) over bar decays into VP, where V and P denote vector and pseudoscalar mesons, respectively, via Okubo-Zweig-Iizuka-rule-evading intermediate meson rescatterings in an effective Lagrangian theory. By identifying the leading meson loop transitions and constraining the model parameters with the available experimental data for psi(3770)-> J/psi eta, phi eta, and rho pi, we succeed in making a quantitative prediction for all psi(3770)-> VP with BR(VP) from 0.41% to 0.64%. It indicates that the Okubo-Zweig-Iizuka-rule-evading long-range interactions play a role in psi(3770) strong decays, and could be a key towards a full understanding of the mysterious psi(3770) non-D (D) over bar decay mechanism.