Bai, JZ (reprint author), INST HIGH ENERGY PHYS,BEIJING 100039,PEOPLES R CHINA.
The cross section for e(+)e(-) --> rho pi has been measured by the BES detector at BEPC at center-of-mass energies covering a 40 MeV interval spanning the J/psi resonance. The data are used to search for the vector gluonium state hypothesized by Brodsky, Lepage, and Tuan as an explanation of the rho pi puzzle in charmonium physics. The shape of the rho pi cross section is compatible with that of the total hadronic cross section. No distortions indicating the presence of a vector glueball are seen.