Hadronic Cross Sections in Electron-Positron Annihilation with Tagged Photon

Abstract

Events with tagged photons in the process of electron-positron annihilation into hadrons are considered. The initial state radiation is suggested to scan the hadronic cross section with the energy. QED radiative corrections are taken into account. The results for the total and exclusive cross sections are given in an analytic form. Some numerical estimates are presented.Comment: 12 pages, 2PS figures, the final journal versio