Reanalysis of the $e^+e^-\toηγ$ reaction cross section

Abstract

In the experiment with the SND detector at the VEPP-2M $e^+e^-$ collider measuring the $e^+e^-\to ηγ$ cross section in the energy range $0.6<\sqrt{s}<1.38 \mathrm{GeV}$ the reanalysis of data is performed. The goal is to improve the accuracy of the previous results by analysing ambiguities in the approximation of energy dependence of the $e^+e^-\to ηγ$ cross section, which were not taken into account in our previous study. We report new results on the approximation of the $e^+e^-\to ηγ$ cross section based on Vector Dominance Model under new model parameter assumptions.

3 pages, 4 tables