Reanalysis of the $e^{+}{e}^{-}\to \hat{I}\cdot {\hat{I}}^3$ reaction cross section

Abstract

In the experiment with the SND detector at the VEPP-2M $e^{+}{e}^{-}$ collider measuring the $e^{+}{e}^{-}\to \hat{I}\cdot {\hat{I}}^3$ 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 $e^{+}{e}^{-}\to \hat{I}\cdot {\hat{I}}^3$ cross section, which were not taken into account in our previous study. We report new results on the approximation of the $e^{+}{e}^{-}\to \hat{I}\cdot {\hat{I}}^3$ cross section based on Vector Dominance Model under new model parameter assumptions.

3 pages, 4 tables