Article

# Reanalysis of the $e^+e^-\to\eta\gamma$ reaction cross section

10/2007;
Source: arXiv

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

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21 Mar 2013

### Keywords

analysing ambiguities

approximation

new model parameter assumptions

previous results

reanalysis

SND detector

Vector Dominance Model