抄録
The resonant cross-section of e+e−→1− topponium→hadrons in the region of about 50 GeV is numerically calculated by taking into account the initial-state radiative corrections to the order α3 and the finite resolution in beam energy. The radiative corrections properly include the hadronic vacuum polarization. The exponentiated correction due to soft photon emission by incident particles is given in a numerical table of the radiatively corrected resolution function. Masses and decay widths of the topponium states are estimated by solving the Schrödinger equation with Coulomb plus linear potential. The result shows that the first two resonances may be detected by the TRISTAN e+e− collider.