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Search for the Process \({e}^{+}{e}^{-}\to \eta^{\prime}\gamma\) with the SND Detector

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Abstract

The results of searches for the process \(e^{+}e^{-}\to\eta^{\prime}\gamma\) in an experiment with the SND detector at the VEPP-2000 electron–positron collider are presented. The data used in these searches and based on an integrated luminosity of about 87 pb\({}^{-1}\) were accumulated at c.m. energies \(\sqrt{s}\) between 1.15 and 2 GeV. The upper limits of \(\sigma_{\eta^{\prime}\gamma}<28\) pb for \(1.15<\sqrt{s}<1.39\) GeV and \(\sigma_{\eta^{\prime}\gamma}<12\) pb for \(1.39<\sqrt{s}<2.00\) GeV were set at a 90\(\%\) confidence level.

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ACKNOWLEDGMENTS

This work was performed on the basis of the VEPP-4–VEPP-2000 complex of accelerators of Novosibirsk State University.

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Correspondence to A. V. Berdyugin.

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Achasov, M.N., Barnyakov, A.Y., Beloborodov, K.I. et al. Search for the Process \({e}^{+}{e}^{-}\to \eta^{\prime}\gamma\) with the SND Detector. Phys. Atom. Nuclei 83, 714–719 (2020). https://doi.org/10.1134/S106377882005004X

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  • DOI: https://doi.org/10.1134/S106377882005004X

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