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

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arxiv 0709.1007 v1 pith:UEMT5KWA submitted 2007-09-07 hep-ex

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

classification hep-ex
keywords crossgammasectionapproximationenergymodelpreviousreanalysis
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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