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VOLUME 78 | ISSUE 2 | PAGE 61 QED corrections in radiative return method at measurement of the cross-section below 1 GeV M. I. Konchatnij, N. P. Merenkov, O. N. Shekhovtzova National Science Centre Kharkov Institute of Physics and Technology, 61108 Kharkov, Ukraine PACS: 12.20.-m, 13.40.-f, 13.60.-Hb, 13.88.+e Abstract We discuss radiative corrections at the measurement of the cross-section by the radiative return method without photon tagging. The radiative corrections to the initial-state radiation process are computed for DAΦNE conditions, using the quasi-real electron approximation for both, the cross-section and the underlying kinematics. The efficiency of experimental rules for event selection by the restrictions on the lost invariant mass and so-called «track mass" is estimated. Some numerical calculations illustrate our analytical results. Download PS file (GZipped, 115.9K)  |  Download PDF file (224K)